- Mar 17, 2023
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Dmitry Baryshkov authored
[ Upstream commit 141f66eb ] A530 has highest bank bit equal to 15 (like A540). Fix values written to REG_A5XX_RB_MODE_CNTL and REG_A5XX_TPL1_MODE_CNTL registers. Fixes: 1d832ab3 ("drm/msm/a5xx: Add support for Adreno 508, 509, 512 GPUs") Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/522639/ Link: https://lore.kernel.org/r/20230214020956.164473-3-dmitry.baryshkov@linaro.org Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Dmitry Baryshkov authored
[ Upstream commit a7a4c19c ] Rather than writing CP_PREEMPT_ENABLE_GLOBAL twice, follow the vendor kernel and set CP_PREEMPT_ENABLE_LOCAL register instead. a5xx_submit() will override it during submission, but let's get the sequence correct. Fixes: b1fc2839 ("drm/msm: Implement preemption for A5XX targets") Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/522638/ Link: https://lore.kernel.org/r/20230214020956.164473-2-dmitry.baryshkov@linaro.org Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Rob Clark authored
[ Upstream commit 8a86f213 ] The error path cleanup expects that chain and syncobj are either NULL or valid pointers. But post_deps was not allocated with __GFP_ZERO. Fixes: ab723b7a ("drm/msm: Add syncobj support.") Signed-off-by: Rob Clark <robdclark@chromium.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Patchwork: https://patchwork.freedesktop.org/patch/523051/ Link: https://lore.kernel.org/r/20230215235048.1166484-1-robdclark@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>
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Jiri Slaby (SUSE) authored
[ Upstream commit 3638a820 ] gcc-13 warns about mismatching types for enums. That revealed switched arguments of nv50_wndw_new_(): drivers/gpu/drm/nouveau/dispnv50/wndw.c:696:1: error: conflicting types for 'nv50_wndw_new_' due to enum/integer mismatch; have 'int(const struct nv50_wndw_func *, struct drm_device *, enum drm_plane_type, const char *, int, const u32 *, u32, enum nv50_disp_interlock_type, u32, struct nv50_wndw **)' drivers/gpu/drm/nouveau/dispnv50/wndw.h:36:5: note: previous declaration of 'nv50_wndw_new_' with type 'int(const struct nv50_wndw_func *, struct drm_device *, enum drm_plane_type, const char *, int, const u32 *, enum nv50_disp_interlock_type, u32, u32, struct nv50_wndw **)' It can be barely visible, but the declaration says about the parameters in the middle: enum nv50_disp_interlock_type, u32 interlock_data, u32 heads, While the definition states differently: u32 heads, enum nv50_disp_interlock_type interlock_type, u32 interlock_data, Unify/fix the declaration to match the definition. Fixes: 53e0a3e7 ("drm/nouveau/kms/nv50-: simplify tracking of channel interlocks") Cc: Martin Liska <mliska@suse.cz> Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Karol Herbst <kherbst@redhat.com> Cc: Lyude Paul <lyude@redhat.com> Cc: David Airlie <airlied@gmail.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: dri-devel@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Signed-off-by: Karol Herbst <kherbst@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221031114229.10289-1-jirislaby@kernel.org Signed-off-by: Sasha Levin <sashal@kernel.org>
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Paulo Alcantara authored
[ Upstream commit b9ee2e30 ] Do not map STATUS_OBJECT_NAME_INVALID to -EREMOTE under non-DFS shares, or 'nodfs' mounts or CONFIG_CIFS_DFS_UPCALL=n builds. Otherwise, in the slow path, get a referral to figure out whether it is an actual DFS link. This could be simply reproduced under a non-DFS share by running the following $ mount.cifs //srv/share /mnt -o ... $ cat /mnt/$(printf '\U110000') cat: '/mnt/'$'\364\220\200\200': Object is remote Fixes: c877ce47 ("cifs: reduce roundtrips on create/qinfo requests") CC: stable@vger.kernel.org # 6.2 Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Jan Kara authored
[ Upstream commit 0813299c ] When we are renaming a directory to a different directory, we need to update '..' entry in the moved directory. However nothing prevents moved directory from being modified and even converted from the inline format to the normal format. When such race happens the rename code gets confused and we crash. Fix the problem by locking the moved directory. CC: stable@vger.kernel.org Fixes: 32f7f22c ("ext4: let ext4_rename handle inline dir") Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230126112221.11866-1-jack@suse.cz Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Bart Van Assche authored
[ Upstream commit fc663711 ] Remove the /proc/scsi/${proc_name} directory earlier to fix a race condition between unloading and reloading kernel modules. This fixes a bug introduced in 2009 by commit 77c01976 ("[SCSI] fix /proc memory leak in the SCSI core"). Fix the following kernel warning: proc_dir_entry 'scsi/scsi_debug' already registered WARNING: CPU: 19 PID: 27986 at fs/proc/generic.c:376 proc_register+0x27d/0x2e0 Call Trace: proc_mkdir+0xb5/0xe0 scsi_proc_hostdir_add+0xb5/0x170 scsi_host_alloc+0x683/0x6c0 sdebug_driver_probe+0x6b/0x2d0 [scsi_debug] really_probe+0x159/0x540 __driver_probe_device+0xdc/0x230 driver_probe_device+0x4f/0x120 __device_attach_driver+0xef/0x180 bus_for_each_drv+0xe5/0x130 __device_attach+0x127/0x290 device_initial_probe+0x17/0x20 bus_probe_device+0x110/0x130 device_add+0x673/0xc80 device_register+0x1e/0x30 sdebug_add_host_helper+0x1a7/0x3b0 [scsi_debug] scsi_debug_init+0x64f/0x1000 [scsi_debug] do_one_initcall+0xd7/0x470 do_init_module+0xe7/0x330 load_module+0x122a/0x12c0 __do_sys_finit_module+0x124/0x1a0 __x64_sys_finit_module+0x46/0x50 do_syscall_64+0x38/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Link: https://lore.kernel.org/r/20230210205200.36973-3-bvanassche@acm.org Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Yi Zhang <yi.zhang@redhat.com> Cc: stable@vger.kernel.org Fixes: 77c01976 ("[SCSI] fix /proc memory leak in the SCSI core") Reported-by: Yi Zhang <yi.zhang@redhat.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Liao Chang authored
[ Upstream commit 8ac6e619 ] Add header include guards to insn.h to prevent repeating declaration of any identifiers in insn.h. Fixes: edde5584 ("riscv: Add SW single-step support for KDB") Signed-off-by: Liao Chang <liaochang1@huawei.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Fixes: c9c1af3f ("RISC-V: rename parse_asm.h to insn.h") Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20230129094242.282620-1-liaochang1@huawei.com Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Yu Kuai authored
[ Upstream commit e5cfefa9 ] As explained in commit 36369f46 ("block: Do not reread partition table on exclusively open device"), reread partition on the device that is exclusively opened by someone else is problematic. This patch will make sure partition scan will only be proceed if current thread open the device exclusively, or the device is not opened exclusively, and in the later case, other scanners and exclusive openers will be blocked temporarily until partition scan is done. Fixes: 10c70d95 ("block: remove the bd_openers checks in blk_drop_partitions") Cc: <stable@vger.kernel.org> Suggested-by: Jan Kara <jack@suse.cz> Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20230217022200.3092987-3-yukuai1@huaweicloud.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Yu Kuai authored
[ Upstream commit 0f77b29a ] This reverts commit 36369f46. This patch can't fix the problem in a corner case that device can be opened exclusively after the checking and before blkdev_get_by_dev(). We'll use a new solution to fix the problem in the next patch, and the new solution doesn't need to change apis. Signed-off-by: Yu Kuai <yukuai3@huawei.com> Acked-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230217022200.3092987-2-yukuai1@huaweicloud.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Stable-dep-of: e5cfefa9 ("block: fix scan partition for exclusively open device again") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Ville Syrjälä authored
[ Upstream commit 14e591a1 ] We now have some eDP+DSI dual panel systems floating around where the DSI panel is the secondary LFP and thus needs to consult "panel type 2" in VBT in order to locate all the other panel type dependant stuff correctly. To that end we need to pass in the devdata to intel_bios_init_panel_late(), otherwise it'll just assume we want the primary panel type. So let's try to just populate the vbt.ports[] stuff and encoder->devdata for icl+ DSI panels as well. We can't do this on older platforms as there we risk a DSI port aliasing with a HDMI/DP port, which is a totally legal thing as the DSI ports live in their own little parallel universe. Cc: stable@vger.kernel.org Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8016 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230207064337.18697-3-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com> (cherry picked from commit ba00eb6a) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Ville Syrjälä authored
[ Upstream commit 3f9ffce5 ] Lots of ADL machines out there with bogus VBTs that declare two eDP child devices. In order for those to work we need to figure out which power sequencer to use before we try the EDID read. So let's do the panel VBT init early if we can, falling back to the post-EDID init otherwise. The post-EDID init panel_type=0xff approach of assuming the power sequencer should already be enabled doesn't really work with multiple eDP panels, and currently we just end up using the same power sequencer for both eDP ports, which at least confuses the wakeref tracking, and potentially also causes us to toggle the VDD for the panel when we should not. Cc: Animesh Manna <animesh.manna@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221125173156.31689-3-ville.syrjala@linux.intel.com Stable-dep-of: 14e591a1 ("drm/i915: Populate encoder->devdata for DSI on icl+") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Ville Syrjälä authored
[ Upstream commit f70f8153 ] Introduce a place where we can initialize connector->panel after it's been allocated. We already have a intel_panel_init() so had to get creative with the name and came up with intel_panel_init_alloc(). Cc: Animesh Manna <animesh.manna@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221125173156.31689-2-ville.syrjala@linux.intel.com Stable-dep-of: 14e591a1 ("drm/i915: Populate encoder->devdata for DSI on icl+") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Mika Westerberg authored
[ Upstream commit 574fbb95 ] The flash decriptor contains the number of flash components that we use to figure out how many flash chips there are connected. Therefore we need to read it first before deciding how many chip selects the controller has. Reported-by: Marcin Witkowski <marcin.witkowski@intel.com> Fixes: 3f03c618 ("spi: intel: Add support for second flash chip") Cc: stable@vger.kernel.org Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Link: https://lore.kernel.org/r/20230215110040.42186-1-mika.westerberg@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Corey Minyard authored
[ Upstream commit 00bb7e76 ] The IPMI spec has a time (T6) specified between request retries. Add the handling for that. Reported by: Tony Camuso <tcamuso@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Corey Minyard authored
[ Upstream commit 39721d62 ] The spec states that the minimum message retry time is 60ms, but it was set to 20ms. Correct it. Reported by: Tony Camuso <tcamuso@redhat.com> Signed-off-by: Corey Minyard <cminyard@mvista.com> Stable-dep-of: 00bb7e76 ("ipmi:ssif: Add a timer between request retries") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Corey Minyard authored
[ Upstream commit 9e8b8992 ] It was cruft left over from older handling of run to completion. Cc: stable@vger.kernel.org Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Dmitry Torokhov authored
[ Upstream commit 79c81d13 ] We need to stop the timer on driver unbind or probe failures, otherwise we get UAF/Oops. Fixes: 7e577a17 ("Input: add I2C attached EETI EXC3000 multi touch driver") Reported-by: "Stahl, Michael" <mstahl@moba.de> Link: https://lore.kernel.org/r/Y9dK57BFqtlf8NmN@google.com Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Manivannan Sadhasivam authored
[ Upstream commit 1ddc7618 ] state_lock, the spinlock type is meant to protect race against concurrent MHI state transitions. In mhi_ep_set_m0_state(), while the state_lock is being held, the channels are resumed in mhi_ep_resume_channels() if the previous state was M3. This causes sleeping in atomic bug, since mhi_ep_resume_channels() use mutex internally. Since the state_lock is supposed to be held throughout the state change, it is not ideal to drop the lock before calling mhi_ep_resume_channels(). So to fix this issue, let's change the type of state_lock to mutex. This would also allow holding the lock throughout all state transitions thereby avoiding any potential race. Cc: <stable@vger.kernel.org> # 5.19 Fixes: e4b7b5f0 ("bus: mhi: ep: Add support for suspending and resuming channels") Reported-by: Dan Carpenter <error27@gmail.com> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Manivannan Sadhasivam authored
[ Upstream commit 47a1dcae ] During graceful shutdown scenario, host will issue MHI RESET to the endpoint device before initiating shutdown. In that case, it makes sense to completely power down the MHI stack as sooner or later the access to MMIO registers will be prohibited. Also, the stack needs to be powered up in the case of SYS_ERR to recover the device. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Link: https://lore.kernel.org/r/20221228161704.255268-2-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Stable-dep-of: 1ddc7618 ("bus: mhi: ep: Change state_lock to mutex") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Jan Kara authored
[ Upstream commit f54aa97f ] The condition determining whether the preallocation can be used had an off-by-one error so we didn't discard preallocation when new allocation was just following it. This can then confuse code in inode_getblk(). CC: stable@vger.kernel.org Fixes: 16d05565 ("udf: Discard preallocation before extending file with a hole") Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit 16427211 ] This patch sets the stop tx flag before we commit the dlm message. This flag will report about unexpected transmissions after we send the DLM_FIN message out, which should be the last message sent. When we commit the dlm fin message, it could be that we already got an ack back and the CLOSED state change already happened. We should not set this flag when we are in CLOSED state. To avoid this race we simply set the tx flag before the state change can be in progress by moving it before dlm_midcomms_commit_mhandle(). Cc: stable@vger.kernel.org Fixes: 489d8e55 ("fs: dlm: add reliable connection if reconnect") Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit 7354fa4e ] If we release a midcomms node structure, there should be nothing left inside the dlm midcomms send queue. However, sometimes this is not true because I believe some DLM_FIN message was not acked... if we run into a shutdown timeout, then we should be sure there is no pending send dlm message inside this queue when releasing midcomms node structure. Cc: stable@vger.kernel.org Fixes: 489d8e55 ("fs: dlm: add reliable connection if reconnect") Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit 775af207 ] To not get the console spammed about WARN_ON() of invalid states in the dlm midcomms hot path handling we switch to WARN_ON_ONCE() to get it only once that there might be an issue with the midcomms state handling. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Stable-dep-of: 7354fa4e ("fs: dlm: be sure to call dlm_send_queue_flush()") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit 724b6bab ] While working on processing dlm message in softirq context I experienced the following KASAN use-after-free warning: [ 151.760477] ================================================================== [ 151.761803] BUG: KASAN: use-after-free in dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.763414] Read of size 4 at addr ffff88811a980c60 by task lock_torture/1347 [ 151.765284] CPU: 7 PID: 1347 Comm: lock_torture Not tainted 6.1.0-rc4+ #2828 [ 151.766778] Hardware name: Red Hat KVM/RHEL-AV, BIOS 1.16.0-3.module+el8.7.0+16134+e5908aa2 04/01/2014 [ 151.768726] Call Trace: [ 151.769277] <TASK> [ 151.769748] dump_stack_lvl+0x5b/0x86 [ 151.770556] print_report+0x180/0x4c8 [ 151.771378] ? kasan_complete_mode_report_info+0x7c/0x1e0 [ 151.772241] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.773069] kasan_report+0x93/0x1a0 [ 151.773668] ? dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.774514] __asan_load4+0x7e/0xa0 [ 151.775089] dlm_midcomms_commit_mhandle+0x19d/0x4b0 [ 151.775890] ? create_message.isra.29.constprop.64+0x57/0xc0 [ 151.776770] send_common+0x19f/0x1b0 [ 151.777342] ? remove_from_waiters+0x60/0x60 [ 151.778017] ? lock_downgrade+0x410/0x410 [ 151.778648] ? __this_cpu_preempt_check+0x13/0x20 [ 151.779421] ? rcu_lockdep_current_cpu_online+0x88/0xc0 [ 151.780292] _convert_lock+0x46/0x150 [ 151.780893] convert_lock+0x7b/0xc0 [ 151.781459] dlm_lock+0x3ac/0x580 [ 151.781993] ? 0xffffffffc0540000 [ 151.782522] ? torture_stop+0x120/0x120 [dlm_locktorture] [ 151.783379] ? dlm_scan_rsbs+0xa70/0xa70 [ 151.784003] ? preempt_count_sub+0xd6/0x130 [ 151.784661] ? is_module_address+0x47/0x70 [ 151.785309] ? torture_stop+0x120/0x120 [dlm_locktorture] [ 151.786166] ? 0xffffffffc0540000 [ 151.786693] ? lockdep_init_map_type+0xc3/0x360 [ 151.787414] ? 0xffffffffc0540000 [ 151.787947] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture] [ 151.789004] ? torture_stop+0x120/0x120 [dlm_locktorture] [ 151.789858] ? 0xffffffffc0540000 [ 151.790392] ? lock_torture_cleanup+0x20/0x20 [dlm_locktorture] [ 151.791347] ? delay_tsc+0x94/0xc0 [ 151.791898] torture_ex_iter+0xc3/0xea [dlm_locktorture] [ 151.792735] ? torture_start+0x30/0x30 [dlm_locktorture] [ 151.793606] lock_torture+0x177/0x270 [dlm_locktorture] [ 151.794448] ? torture_dlm_lock_sync.isra.3+0x150/0x150 [dlm_locktorture] [ 151.795539] ? lock_torture_stats+0x80/0x80 [dlm_locktorture] [ 151.796476] ? do_raw_spin_lock+0x11e/0x1e0 [ 151.797152] ? mark_held_locks+0x34/0xb0 [ 151.797784] ? _raw_spin_unlock_irqrestore+0x30/0x70 [ 151.798581] ? __kthread_parkme+0x79/0x110 [ 151.799246] ? trace_preempt_on+0x2a/0xf0 [ 151.799902] ? __kthread_parkme+0x79/0x110 [ 151.800579] ? preempt_count_sub+0xd6/0x130 [ 151.801271] ? __kasan_check_read+0x11/0x20 [ 151.801963] ? __kthread_parkme+0xec/0x110 [ 151.802630] ? lock_torture_stats+0x80/0x80 [dlm_locktorture] [ 151.803569] kthread+0x192/0x1d0 [ 151.804104] ? kthread_complete_and_exit+0x30/0x30 [ 151.804881] ret_from_fork+0x1f/0x30 [ 151.805480] </TASK> [ 151.806111] Allocated by task 1347: [ 151.806681] kasan_save_stack+0x26/0x50 [ 151.807308] kasan_set_track+0x25/0x30 [ 151.807920] kasan_save_alloc_info+0x1e/0x30 [ 151.808609] __kasan_slab_alloc+0x63/0x80 [ 151.809263] kmem_cache_alloc+0x1ad/0x830 [ 151.809916] dlm_allocate_mhandle+0x17/0x20 [ 151.810590] dlm_midcomms_get_mhandle+0x96/0x260 [ 151.811344] _create_message+0x95/0x180 [ 151.811994] create_message.isra.29.constprop.64+0x57/0xc0 [ 151.812880] send_common+0x129/0x1b0 [ 151.813467] _convert_lock+0x46/0x150 [ 151.814074] convert_lock+0x7b/0xc0 [ 151.814648] dlm_lock+0x3ac/0x580 [ 151.815199] torture_dlm_lock_sync.isra.3+0xe9/0x150 [dlm_locktorture] [ 151.816258] torture_ex_iter+0xc3/0xea [dlm_locktorture] [ 151.817129] lock_torture+0x177/0x270 [dlm_locktorture] [ 151.817986] kthread+0x192/0x1d0 [ 151.818518] ret_from_fork+0x1f/0x30 [ 151.819369] Freed by task 1336: [ 151.819890] kasan_save_stack+0x26/0x50 [ 151.820514] kasan_set_track+0x25/0x30 [ 151.821128] kasan_save_free_info+0x2e/0x50 [ 151.821812] __kasan_slab_free+0x107/0x1a0 [ 151.822483] kmem_cache_free+0x204/0x5e0 [ 151.823152] dlm_free_mhandle+0x18/0x20 [ 151.823781] dlm_mhandle_release+0x2e/0x40 [ 151.824454] rcu_core+0x583/0x1330 [ 151.825047] rcu_core_si+0xe/0x20 [ 151.825594] __do_softirq+0xf4/0x5c2 [ 151.826450] Last potentially related work creation: [ 151.827238] kasan_save_stack+0x26/0x50 [ 151.827870] __kasan_record_aux_stack+0xa2/0xc0 [ 151.828609] kasan_record_aux_stack_noalloc+0xb/0x20 [ 151.829415] call_rcu+0x4c/0x760 [ 151.829954] dlm_mhandle_delete+0x97/0xb0 [ 151.830718] dlm_process_incoming_buffer+0x2fc/0xb30 [ 151.831524] process_dlm_messages+0x16e/0x470 [ 151.832245] process_one_work+0x505/0xa10 [ 151.832905] worker_thread+0x67/0x650 [ 151.833507] kthread+0x192/0x1d0 [ 151.834046] ret_from_fork+0x1f/0x30 [ 151.834900] The buggy address belongs to the object at ffff88811a980c30 which belongs to the cache dlm_mhandle of size 88 [ 151.836894] The buggy address is located 48 bytes inside of 88-byte region [ffff88811a980c30, ffff88811a980c88) [ 151.839007] The buggy address belongs to the physical page: [ 151.839904] page:0000000076cf5d62 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11a980 [ 151.841378] flags: 0x8000000000000200(slab|zone=2) [ 151.842141] raw: 8000000000000200 0000000000000000 dead000000000122 ffff8881089b43c0 [ 151.843401] raw: 0000000000000000 0000000000220022 00000001ffffffff 0000000000000000 [ 151.844640] page dumped because: kasan: bad access detected [ 151.845822] Memory state around the buggy address: [ 151.846602] ffff88811a980b00: fb fb fb fb fc fc fc fc fa fb fb fb fb fb fb fb [ 151.847761] ffff88811a980b80: fb fb fb fc fc fc fc fa fb fb fb fb fb fb fb fb [ 151.848921] >ffff88811a980c00: fb fb fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 151.850076] ^ [ 151.851085] ffff88811a980c80: fb fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 151.852269] ffff88811a980d00: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fc [ 151.853428] ================================================================== [ 151.855618] Disabling lock debugging due to kernel taint It is accessing a mhandle in dlm_midcomms_commit_mhandle() and the mhandle was freed by a call_rcu() call in dlm_process_incoming_buffer(), dlm_mhandle_delete(). It looks like it was freed because an ack of this message was received. There is a short race between committing the dlm message to be transmitted and getting an ack back. If the ack is faster than returning from dlm_midcomms_commit_msg_3_2(), then we run into a use-after free because we still need to reference the mhandle when calling srcu_read_unlock(). To avoid that, we don't allow that mhandle to be freed between dlm_midcomms_commit_msg_3_2() and srcu_read_unlock() by using rcu read lock. We can do that because mhandle is protected by rcu handling. Cc: stable@vger.kernel.org Fixes: 489d8e55 ("fs: dlm: add reliable connection if reconnect") Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit e01c4b7b ] This patch adds tracepoints for send and recv cases of dlm messages and dlm rcom messages. In case of send and dlm message we add the dlm rsb resource name this dlm messages belongs to. This has the advantage to follow dlm messages on a per lock basis. In case of recv message the resource name can be extracted by follow the send message sequence number. The dlm message DLM_MSG_PURGE doesn't belong to a lock request and will not set the resource name in a dlm_message trace. The same for all rcom messages. There is additional handling required for this debugging functionality which is tried to be small as possible. Also the midcomms layer gets aware of lock resource names, for now this is required to make a connection between sequence number and lock resource names. It is for debugging purpose only. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Stable-dep-of: 724b6bab ("fs: dlm: fix use after free in midcomms commit") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit 5b787667 ] To allow more than just dereferencing the inner header we directly point to the inner dlm packet which allows us to dereference the header, rcom or message structure. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Stable-dep-of: 724b6bab ("fs: dlm: fix use after free in midcomms commit") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit 57a5724e ] This patch removes the send repeat remove handling. This handling is there to repeatingly DLM_MSG_REMOVE messages in cases the dlm stack thinks it was not received at the first time. In cases of message drops this functionality is necessary, but since the DLM midcomms layer guarantees there are no messages drops between cluster nodes this feature became not strict necessary anymore. Due message delays/processing it could be that two send_repeat_remove() are sent out while the other should be still on it's way. We remove the repeat remove handling because we are sure that the message cannot be dropped due communication errors. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Stable-dep-of: 724b6bab ("fs: dlm: fix use after free in midcomms commit") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit aad633dc ] The scand kthread can send dlm messages out, especially dlm remove messages to free memory for unused rsb on other nodes. To send out dlm messages, midcomms must be initialized. This patch moves the midcomms start before scand is started. Cc: stable@vger.kernel.org Fixes: e7fd4179 ("[DLM] The core of the DLM for GFS2/CLVM") Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit 8b0188b0 ] This patch introduces leftovers of init, start, stop and exit functionality. The dlm application layer should always call the midcomms layer which getting aware of such event and redirect it to the lowcomms layer. Some functionality which is currently handled inside the start functionality of midcomms and lowcomms should be handled in the init functionality as it only need to be initialized once when dlm is loaded. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Stable-dep-of: aad633dc ("fs: dlm: start midcomms before scand") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Alexander Aring authored
[ Upstream commit 3e54c9e8 ] This patch will fix a small issue when printing out that dlm_midcomms_start() failed to start and it was printing out that the dlm subcomponent lowcomms was failed but lowcomms is behind the midcomms layer. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com> Stable-dep-of: aad633dc ("fs: dlm: start midcomms before scand") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Sean Christopherson authored
[ Upstream commit e32b1200 ] Call kvm_init() only after _all_ setup is complete, as kvm_init() exposes /dev/kvm to userspace and thus allows userspace to create VMs (and call other ioctls). E.g. KVM will encounter a NULL pointer when attempting to add a vCPU to the per-CPU loaded_vmcss_on_cpu list if userspace is able to create a VM before vmx_init() configures said list. BUG: kernel NULL pointer dereference, address: 0000000000000008 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 0 P4D 0 Oops: 0002 [#1] SMP CPU: 6 PID: 1143 Comm: stable Not tainted 6.0.0-rc7+ #988 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 RIP: 0010:vmx_vcpu_load_vmcs+0x68/0x230 [kvm_intel] <TASK> vmx_vcpu_load+0x16/0x60 [kvm_intel] kvm_arch_vcpu_load+0x32/0x1f0 [kvm] vcpu_load+0x2f/0x40 [kvm] kvm_arch_vcpu_create+0x231/0x310 [kvm] kvm_vm_ioctl+0x79f/0xe10 [kvm] ? handle_mm_fault+0xb1/0x220 __x64_sys_ioctl+0x80/0xb0 do_syscall_64+0x2b/0x50 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f5a6b05743b </TASK> Modules linked in: vhost_net vhost vhost_iotlb tap kvm_intel(+) kvm irqbypass Cc: stable@vger.kernel.org Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20221130230934.1014142-15-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Sean Christopherson authored
[ Upstream commit 4f8396b9 ] Move the guts of kvm_arch_init() to a new helper, kvm_x86_vendor_init(), so that VMX can do _all_ arch and vendor initialization before calling kvm_init(). Calling kvm_init() must be the _very_ last step during init, as kvm_init() exposes /dev/kvm to userspace, i.e. allows creating VMs. No functional change intended. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20221130230934.1014142-14-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Stable-dep-of: e32b1200 ("KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Sean Christopherson authored
[ Upstream commit da66de44 ] Don't disable the eVMCS static key on module exit, kvm_intel.ko owns the key so there can't possibly be users after the kvm_intel.ko is unloaded, at least not without much bigger issues. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20221130230934.1014142-12-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Stable-dep-of: e32b1200 ("KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Sean Christopherson authored
[ Upstream commit 2916b70f ] Reset the eVMCS controls in the per-CPU VP assist page during hardware disabling instead of waiting until kvm-intel's module exit. The controls are activated if and only if KVM creates a VM, i.e. don't need to be reset if hardware is never enabled. Doing the reset during hardware disabling will naturally fix a potential NULL pointer deref bug once KVM disables CPU hotplug while enabling and disabling hardware (which is necessary to fix a variety of bugs). If the kernel is running as the root partition, the VP assist page is unmapped during CPU hot unplug, and so KVM's clearing of the eVMCS controls needs to occur with CPU hot(un)plug disabled, otherwise KVM could attempt to write to a CPU's VP assist page after it's unmapped. Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20221130230934.1014142-11-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Stable-dep-of: e32b1200 ("KVM: VMX: Do _all_ initialization before exposing /dev/kvm to userspace") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Fedor Pchelkin authored
commit 7d834b4d upstream. cb_context should be freed on the error path in nfc_se_io as stated by commit 25ff6f8a ("nfc: fix memory leak of se_io context in nfc_genl_se_io"). Make the error path in nfc_se_io unwind everything in reverse order, i.e. free the cb_context after unlocking the device. Suggested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20230306212650.230322-1-pchelkin@ispras.ru Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Lee Jones authored
commit 1c5d4221 upstream. The default maximum data buffer size for this interface is UHID_DATA_MAX (4k). When data buffers are being processed, ensure this value is used when ensuring the sanity, rather than a value between the user provided value and HID_MAX_BUFFER_SIZE (16k). Signed-off-by: Lee Jones <lee@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Lee Jones authored
commit b1a37ed0 upstream. Presently, when a report is processed, its proposed size, provided by the user of the API (as Report Size * Report Count) is compared against the subsystem default HID_MAX_BUFFER_SIZE (16k). However, some low-level HID drivers allocate a reduced amount of memory to their buffers (e.g. UHID only allocates UHID_DATA_MAX (4k) buffers), rending this check inadequate in some cases. In these circumstances, if the received report ends up being smaller than the proposed report size, the remainder of the buffer is zeroed. That is, the space between sizeof(csize) (size of the current report) and the rsize (size proposed i.e. Report Size * Report Count), which can be handled up to HID_MAX_BUFFER_SIZE (16k). Meaning that memset() shoots straight past the end of the buffer boundary and starts zeroing out in-use values, often resulting in calamity. This patch introduces a new variable into 'struct hid_ll_driver' where individual low-level drivers can over-ride the default maximum value of HID_MAX_BUFFER_SIZE (16k) with something more sympathetic to the interface. Signed-off-by: Lee Jones <lee@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Zhihao Cheng authored
commit f5361da1 upstream. If the boot loader inode has never been used before, the EXT4_IOC_SWAP_BOOT inode will initialize it, including setting the i_size to 0. However, if the "never before used" boot loader has a non-zero i_size, then i_disksize will be non-zero, and the inconsistency between i_size and i_disksize can trigger a kernel warning: WARNING: CPU: 0 PID: 2580 at fs/ext4/file.c:319 CPU: 0 PID: 2580 Comm: bb Not tainted 6.3.0-rc1-00004-g703695902cfa RIP: 0010:ext4_file_write_iter+0xbc7/0xd10 Call Trace: vfs_write+0x3b1/0x5c0 ksys_write+0x77/0x160 __x64_sys_write+0x22/0x30 do_syscall_64+0x39/0x80 Reproducer: 1. create corrupted image and mount it: mke2fs -t ext4 /tmp/foo.img 200 debugfs -wR "sif <5> size 25700" /tmp/foo.img mount -t ext4 /tmp/foo.img /mnt cd /mnt echo 123 > file 2. Run the reproducer program: posix_memalign(&buf, 1024, 1024) fd = open("file", O_RDWR | O_DIRECT); ioctl(fd, EXT4_IOC_SWAP_BOOT); write(fd, buf, 1024); Fix this by setting i_disksize as well as i_size to zero when initiaizing the boot loader inode. Link: https://bugzilla.kernel.org/show_bug.cgi?id=217159 Cc: stable@kernel.org Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Link: https://lore.kernel.org/r/20230308032643.641113-1-chengzhihao1@huawei.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ye Bin authored
commit 2b96b4a5 upstream. Syzbot found the following issue: EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none. fscrypt: AES-256-CTS-CBC using implementation "cts-cbc-aes-aesni" fscrypt: AES-256-XTS using implementation "xts-aes-aesni" ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5071 at mm/page_alloc.c:5525 __alloc_pages+0x30a/0x560 mm/page_alloc.c:5525 Modules linked in: CPU: 1 PID: 5071 Comm: syz-executor263 Not tainted 6.2.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:__alloc_pages+0x30a/0x560 mm/page_alloc.c:5525 RSP: 0018:ffffc90003c2f1c0 EFLAGS: 00010246 RAX: ffffc90003c2f220 RBX: 0000000000000014 RCX: 0000000000000000 RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc90003c2f248 RBP: ffffc90003c2f2d8 R08: dffffc0000000000 R09: ffffc90003c2f220 R10: fffff52000785e49 R11: 1ffff92000785e44 R12: 0000000000040d40 R13: 1ffff92000785e40 R14: dffffc0000000000 R15: 1ffff92000785e3c FS: 0000555556c0d300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f95d5e04138 CR3: 00000000793aa000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __alloc_pages_node include/linux/gfp.h:237 [inline] alloc_pages_node include/linux/gfp.h:260 [inline] __kmalloc_large_node+0x95/0x1e0 mm/slab_common.c:1113 __do_kmalloc_node mm/slab_common.c:956 [inline] __kmalloc+0xfe/0x190 mm/slab_common.c:981 kmalloc include/linux/slab.h:584 [inline] kzalloc include/linux/slab.h:720 [inline] ext4_update_inline_data+0x236/0x6b0 fs/ext4/inline.c:346 ext4_update_inline_dir fs/ext4/inline.c:1115 [inline] ext4_try_add_inline_entry+0x328/0x990 fs/ext4/inline.c:1307 ext4_add_entry+0x5a4/0xeb0 fs/ext4/namei.c:2385 ext4_add_nondir+0x96/0x260 fs/ext4/namei.c:2772 ext4_create+0x36c/0x560 fs/ext4/namei.c:2817 lookup_open fs/namei.c:3413 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x12ac/0x2dd0 fs/namei.c:3711 do_filp_open+0x264/0x4f0 fs/namei.c:3741 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Above issue happens as follows: ext4_iget ext4_find_inline_data_nolock ->i_inline_off=164 i_inline_size=60 ext4_try_add_inline_entry __ext4_mark_inode_dirty ext4_expand_extra_isize_ea ->i_extra_isize=32 s_want_extra_isize=44 ext4_xattr_shift_entries ->after shift i_inline_off is incorrect, actually is change to 176 ext4_try_add_inline_entry ext4_update_inline_dir get_max_inline_xattr_value_size if (EXT4_I(inode)->i_inline_off) entry = (struct ext4_xattr_entry *)((void *)raw_inode + EXT4_I(inode)->i_inline_off); free += EXT4_XATTR_SIZE(le32_to_cpu(entry->e_value_size)); ->As entry is incorrect, then 'free' may be negative ext4_update_inline_data value = kzalloc(len, GFP_NOFS); -> len is unsigned int, maybe very large, then trigger warning when 'kzalloc()' To resolve the above issue we need to update 'i_inline_off' after 'ext4_xattr_shift_entries()'. We do not need to set EXT4_STATE_MAY_INLINE_DATA flag here, since ext4_mark_inode_dirty() already sets this flag if needed. Setting EXT4_STATE_MAY_INLINE_DATA when it is needed may trigger a BUG_ON in ext4_writepages(). Reported-by: <syzbot+d30838395804afc2fa6f@syzkaller.appspotmail.com> Cc: stable@kernel.org Signed-off-by: Ye Bin <yebin10@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230307015253.2232062-3-yebin@huaweicloud.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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