summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2025-05-01arm64: errata: Add missing sentinels to Spectre-BHB MIDR arraysWill Deacon
Commit a5951389e58d ("arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists") added some additional CPUs to the Spectre-BHB workaround, including some new arrays for designs that require new 'k' values for the workaround to be effective. Unfortunately, the new arrays omitted the sentinel entry and so is_midr_in_range_list() will walk off the end when it doesn't find a match. With UBSAN enabled, this leads to a crash during boot when is_midr_in_range_list() is inlined (which was more common prior to c8c2647e69be ("arm64: Make  _midr_in_range_list() an exported function")): | Internal error: aarch64 BRK: 00000000f2000001 [#1] PREEMPT SMP | pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : spectre_bhb_loop_affected+0x28/0x30 | lr : is_spectre_bhb_affected+0x170/0x190 | [...] | Call trace: | spectre_bhb_loop_affected+0x28/0x30 | update_cpu_capabilities+0xc0/0x184 | init_cpu_features+0x188/0x1a4 | cpuinfo_store_boot_cpu+0x4c/0x60 | smp_prepare_boot_cpu+0x38/0x54 | start_kernel+0x8c/0x478 | __primary_switched+0xc8/0xd4 | Code: 6b09011f 54000061 52801080 d65f03c0 (d4200020) | ---[ end trace 0000000000000000 ]--- | Kernel panic - not syncing: aarch64 BRK: Fatal exception Add the missing sentinel entries. Cc: Lee Jones <lee@kernel.org> Cc: James Morse <james.morse@arm.com> Cc: Doug Anderson <dianders@chromium.org> Cc: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Cc: <stable@vger.kernel.org> Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Fixes: a5951389e58d ("arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists") Signed-off-by: Will Deacon <will@kernel.org> Reviewed-by: Lee Jones <lee@kernel.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250501104747.28431-1-will@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2025-05-01drm/xe/eustall: Do not support EU stall on SRIOV VFHarish Chegondi
EU stall sampling is not supported on SRIOV VF. Do not initialize or open EU stall stream on SRIOV VF. Fixes: 9a0b11d4cf3b ("drm/xe/eustall: Add support to init, enable and disable EU stall sampling") Signed-off-by: Harish Chegondi <harish.chegondi@intel.com> Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Link: https://lore.kernel.org/r/10db5d1c7e17aadca7078ff74575b7ffc0d5d6b8.1745215022.git.harish.chegondi@intel.com (cherry picked from commit 6ed20625a4b8189a1bd6598aa58e03147ce378ee) Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2025-05-01drm/xe/eustall: Resolve a possible circular locking dependencyHarish Chegondi
Use a separate lock in the polling function eu_stall_data_buf_poll() instead of eu_stall->stream_lock. This would prevent a possible circular locking dependency leading to a deadlock as described below. This would also require additional locking with the new lock in the read function. <4> [787.192986] ====================================================== <4> [787.192988] WARNING: possible circular locking dependency detected <4> [787.192991] 6.14.0-rc7-xe+ #1 Tainted: G U <4> [787.192993] ------------------------------------------------------ <4> [787.192994] xe_eu_stall/20093 is trying to acquire lock: <4> [787.192996] ffff88819847e2c0 ((work_completion) (&(&stream->buf_poll_work)->work)), at: __flush_work+0x1f8/0x5e0 <4> [787.193005] but task is already holding lock: <4> [787.193007] ffff88814ce83ba8 (&gt->eu_stall->stream_lock){3:3}, at: xe_eu_stall_stream_ioctl+0x41/0x6a0 [xe] <4> [787.193090] which lock already depends on the new lock. <4> [787.193093] the existing dependency chain (in reverse order) is: <4> [787.193095] -> #1 (&gt->eu_stall->stream_lock){+.+.}-{3:3}: <4> [787.193099] __mutex_lock+0xb4/0xe40 <4> [787.193104] mutex_lock_nested+0x1b/0x30 <4> [787.193106] eu_stall_data_buf_poll_work_fn+0x44/0x1d0 [xe] <4> [787.193155] process_one_work+0x21c/0x740 <4> [787.193159] worker_thread+0x1db/0x3c0 <4> [787.193161] kthread+0x10d/0x270 <4> [787.193164] ret_from_fork+0x44/0x70 <4> [787.193168] ret_from_fork_asm+0x1a/0x30 <4> [787.193172] -> #0 ((work_completion)(&(&stream->buf_poll_work)->work)){+.+.}-{0:0}: <4> [787.193176] __lock_acquire+0x1637/0x2810 <4> [787.193180] lock_acquire+0xc9/0x300 <4> [787.193183] __flush_work+0x219/0x5e0 <4> [787.193186] cancel_delayed_work_sync+0x87/0x90 <4> [787.193189] xe_eu_stall_disable_locked+0x9a/0x260 [xe] <4> [787.193237] xe_eu_stall_stream_ioctl+0x5b/0x6a0 [xe] <4> [787.193285] __x64_sys_ioctl+0xa4/0xe0 <4> [787.193289] x64_sys_call+0x131e/0x2650 <4> [787.193292] do_syscall_64+0x91/0x180 <4> [787.193295] entry_SYSCALL_64_after_hwframe+0x76/0x7e <4> [787.193299] other info that might help us debug this: <4> [787.193302] Possible unsafe locking scenario: <4> [787.193304] CPU0 CPU1 <4> [787.193305] ---- ---- <4> [787.193306] lock(&gt->eu_stall->stream_lock); <4> [787.193308] lock((work_completion) (&(&stream->buf_poll_work)->work)); <4> [787.193311] lock(&gt->eu_stall->stream_lock); <4> [787.193313] lock((work_completion) (&(&stream->buf_poll_work)->work)); <4> [787.193315] *** DEADLOCK *** Fixes: 760edec939685 ("drm/xe/eustall: Add support to read() and poll() EU stall data") Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/4598 Signed-off-by: Harish Chegondi <harish.chegondi@intel.com> Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Link: https://lore.kernel.org/r/c896932fca84f79db2df5942911997ed77b2b9b6.1744934656.git.harish.chegondi@intel.com (cherry picked from commit c2b1f1b8641372bb2e563c49eb25632623a860fc) Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2025-05-01bcachefs: Fix __bch2_dev_group_set()Kent Overstreet
bch2_sb_disk_groups_to_cpu() goes off of the superblock member info, so we need to set that first. Reported-by: Stijn Tintel <stijn@linux-ipv6.be> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2025-05-01drm/amdgpu: Add DPG pause for VCN v5.0.1Sonny Jiang
For vcn5.0.1 only, enable DPG PAUSE to avoid DPG resets. Signed-off-by: Sonny Jiang <sonny.jiang@amd.com> Reviewed-by: Leo Liu <leo.liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 3e5f86c14c3440171f2a3e7a68ceb739297726e9)
2025-05-01drm/amdgpu: Fix offset for HDP remap in nbio v7.11Lijo Lazar
APUs in passthrough mode use HDP flush. 0x7F000 offset used for remapping HDP flush is mapped to VPE space which could get power gated. Use another unused offset in BIF space. Signed-off-by: Lijo Lazar <lijo.lazar@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit d8116a32cdbe456c7f511183eb9ab187e3d590fb) Cc: stable@vger.kernel.org
2025-05-01drm/amdgpu: Fail DMABUF map of XGMI-accessible memoryFelix Kuehling
If peer memory is XGMI-accessible, we should never access it through PCIe P2P DMA mappings. PCIe P2P is slower, has different coherence behaviour, limited or no support for atomics, or may not work at all. Fail with a warning if DMABUF mappings of such memory are attempted. Signed-off-by: Felix Kuehling <felix.kuehling@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit dbe4c63689bc6b5fd3ab72650ea4b6a667e96a68)
2025-05-01drm/amd/display: Fix slab-use-after-free in hdcpChris Bainbridge
The HDCP code in amdgpu_dm_hdcp.c copies pointers to amdgpu_dm_connector objects without incrementing the kref reference counts. When using a USB-C dock, and the dock is unplugged, the corresponding amdgpu_dm_connector objects are freed, creating dangling pointers in the HDCP code. When the dock is plugged back, the dangling pointers are dereferenced, resulting in a slab-use-after-free: [ 66.775837] BUG: KASAN: slab-use-after-free in event_property_validate+0x42f/0x6c0 [amdgpu] [ 66.776171] Read of size 4 at addr ffff888127804120 by task kworker/0:1/10 [ 66.776179] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.14.0-rc7-00180-g54505f727a38-dirty #233 [ 66.776183] Hardware name: HP HP Pavilion Aero Laptop 13-be0xxx/8916, BIOS F.17 12/18/2024 [ 66.776186] Workqueue: events event_property_validate [amdgpu] [ 66.776494] Call Trace: [ 66.776496] <TASK> [ 66.776497] dump_stack_lvl+0x70/0xa0 [ 66.776504] print_report+0x175/0x555 [ 66.776507] ? __virt_addr_valid+0x243/0x450 [ 66.776510] ? kasan_complete_mode_report_info+0x66/0x1c0 [ 66.776515] kasan_report+0xeb/0x1c0 [ 66.776518] ? event_property_validate+0x42f/0x6c0 [amdgpu] [ 66.776819] ? event_property_validate+0x42f/0x6c0 [amdgpu] [ 66.777121] __asan_report_load4_noabort+0x14/0x20 [ 66.777124] event_property_validate+0x42f/0x6c0 [amdgpu] [ 66.777342] ? __lock_acquire+0x6b40/0x6b40 [ 66.777347] ? enable_assr+0x250/0x250 [amdgpu] [ 66.777571] process_one_work+0x86b/0x1510 [ 66.777575] ? pwq_dec_nr_in_flight+0xcf0/0xcf0 [ 66.777578] ? assign_work+0x16b/0x280 [ 66.777580] ? lock_is_held_type+0xa3/0x130 [ 66.777583] worker_thread+0x5c0/0xfa0 [ 66.777587] ? process_one_work+0x1510/0x1510 [ 66.777588] kthread+0x3a2/0x840 [ 66.777591] ? kthread_is_per_cpu+0xd0/0xd0 [ 66.777594] ? trace_hardirqs_on+0x4f/0x60 [ 66.777597] ? _raw_spin_unlock_irq+0x27/0x60 [ 66.777599] ? calculate_sigpending+0x77/0xa0 [ 66.777602] ? kthread_is_per_cpu+0xd0/0xd0 [ 66.777605] ret_from_fork+0x40/0x90 [ 66.777607] ? kthread_is_per_cpu+0xd0/0xd0 [ 66.777609] ret_from_fork_asm+0x11/0x20 [ 66.777614] </TASK> [ 66.777643] Allocated by task 10: [ 66.777646] kasan_save_stack+0x39/0x60 [ 66.777649] kasan_save_track+0x14/0x40 [ 66.777652] kasan_save_alloc_info+0x37/0x50 [ 66.777655] __kasan_kmalloc+0xbb/0xc0 [ 66.777658] __kmalloc_cache_noprof+0x1c8/0x4b0 [ 66.777661] dm_dp_add_mst_connector+0xdd/0x5c0 [amdgpu] [ 66.777880] drm_dp_mst_port_add_connector+0x47e/0x770 [drm_display_helper] [ 66.777892] drm_dp_send_link_address+0x1554/0x2bf0 [drm_display_helper] [ 66.777901] drm_dp_check_and_send_link_address+0x187/0x1f0 [drm_display_helper] [ 66.777909] drm_dp_mst_link_probe_work+0x2b8/0x410 [drm_display_helper] [ 66.777917] process_one_work+0x86b/0x1510 [ 66.777919] worker_thread+0x5c0/0xfa0 [ 66.777922] kthread+0x3a2/0x840 [ 66.777925] ret_from_fork+0x40/0x90 [ 66.777927] ret_from_fork_asm+0x11/0x20 [ 66.777932] Freed by task 1713: [ 66.777935] kasan_save_stack+0x39/0x60 [ 66.777938] kasan_save_track+0x14/0x40 [ 66.777940] kasan_save_free_info+0x3b/0x60 [ 66.777944] __kasan_slab_free+0x52/0x70 [ 66.777946] kfree+0x13f/0x4b0 [ 66.777949] dm_dp_mst_connector_destroy+0xfa/0x150 [amdgpu] [ 66.778179] drm_connector_free+0x7d/0xb0 [ 66.778184] drm_mode_object_put.part.0+0xee/0x160 [ 66.778188] drm_mode_object_put+0x37/0x50 [ 66.778191] drm_atomic_state_default_clear+0x220/0xd60 [ 66.778194] __drm_atomic_state_free+0x16e/0x2a0 [ 66.778197] drm_mode_atomic_ioctl+0x15ed/0x2ba0 [ 66.778200] drm_ioctl_kernel+0x17a/0x310 [ 66.778203] drm_ioctl+0x584/0xd10 [ 66.778206] amdgpu_drm_ioctl+0xd2/0x1c0 [amdgpu] [ 66.778375] __x64_sys_ioctl+0x139/0x1a0 [ 66.778378] x64_sys_call+0xee7/0xfb0 [ 66.778381] do_syscall_64+0x87/0x140 [ 66.778385] entry_SYSCALL_64_after_hwframe+0x4b/0x53 Fix this by properly incrementing and decrementing the reference counts when making and deleting copies of the amdgpu_dm_connector pointers. (Mario: rebase on current code and update fixes tag) Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4006 Signed-off-by: Chris Bainbridge <chris.bainbridge@gmail.com> Fixes: da3fd7ac0bcf3 ("drm/amd/display: Update CP property based on HW query") Reviewed-by: Alex Hung <alex.hung@amd.com> Link: https://lore.kernel.org/r/20250417215005.37964-1-mario.limonciello@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit d4673f3c3b3dcb74e36e53cdfc880baa7a87b330) Cc: stable@vger.kernel.org
2025-05-01Merge branch 'net-vertexcom-mse102x-fix-rx-handling'Jakub Kicinski
Stefan Wahren says: ==================== net: vertexcom: mse102x: Fix RX handling This series is the first part of two series for the Vertexcom driver. It contains substantial fixes for the RX handling of the Vertexcom MSE102x. ==================== Link: https://patch.msgid.link/20250430133043.7722-1-wahrenst@gmx.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: vertexcom: mse102x: Fix RX error handlingStefan Wahren
In case the CMD_RTS got corrupted by interferences, the MSE102x doesn't allow a retransmission of the command. Instead the Ethernet frame must be shifted out of the SPI FIFO. Since the actual length is unknown, assume the maximum possible value. Fixes: 2f207cbf0dd4 ("net: vertexcom: Add MSE102x SPI support") Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20250430133043.7722-5-wahrenst@gmx.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: vertexcom: mse102x: Add range check for CMD_RTSStefan Wahren
Since there is no protection in the SPI protocol against electrical interferences, the driver shouldn't blindly trust the length payload of CMD_RTS. So introduce a bounds check for incoming frames. Fixes: 2f207cbf0dd4 ("net: vertexcom: Add MSE102x SPI support") Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20250430133043.7722-4-wahrenst@gmx.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: vertexcom: mse102x: Fix LEN_MASKStefan Wahren
The LEN_MASK for CMD_RTS doesn't cover the whole parameter mask. The Bit 11 is reserved, so adjust LEN_MASK accordingly. Fixes: 2f207cbf0dd4 ("net: vertexcom: Add MSE102x SPI support") Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20250430133043.7722-3-wahrenst@gmx.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: vertexcom: mse102x: Fix possible stuck of SPI interruptStefan Wahren
The MSE102x doesn't provide any SPI commands for interrupt handling. So in case the interrupt fired before the driver requests the IRQ, the interrupt will never fire again. In order to fix this always poll for pending packets after opening the interface. Fixes: 2f207cbf0dd4 ("net: vertexcom: Add MSE102x SPI support") Signed-off-by: Stefan Wahren <wahrenst@gmx.net> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20250430133043.7722-2-wahrenst@gmx.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01Merge branch 'there-are-some-bugfix-for-the-hns3-ethernet-driver'Jakub Kicinski
Jijie Shao says: ==================== There are some bugfix for the HNS3 ethernet driver ==================== Link: https://patch.msgid.link/20250430093052.2400464-1-shaojijie@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: hns3: defer calling ptp_clock_register()Jian Shen
Currently the ptp_clock_register() is called before relative ptp resource ready. It may cause unexpected result when upper layer called the ptp API during the timewindow. Fix it by moving the ptp_clock_register() to the function end. Fixes: 0bf5eb788512 ("net: hns3: add support for PTP") Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Jijie Shao <shaojijie@huawei.com> Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev> Link: https://patch.msgid.link/20250430093052.2400464-5-shaojijie@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: hns3: fixed debugfs tm_qset sizeHao Lan
The size of the tm_qset file of debugfs is limited to 64 KB, which is too small in the scenario with 1280 qsets. The size needs to be expanded to 1 MB. Fixes: 5e69ea7ee2a6 ("net: hns3: refactor the debugfs process") Signed-off-by: Hao Lan <lanhao@huawei.com> Signed-off-by: Peiyang Wang <wangpeiyang1@huawei.com> Signed-off-by: Jijie Shao <shaojijie@huawei.com> Link: https://patch.msgid.link/20250430093052.2400464-4-shaojijie@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: hns3: fix an interrupt residual problemYonglong Liu
When a VF is passthrough to a VM, and the VM is killed, the reported interrupt may not been handled, it will remain, and won't be clear by the nic engine even with a flr or tqp reset. When the VM restart, the interrupt of the first vector may be dropped by the second enable_irq in vfio, see the issue below: https://gitlab.com/qemu-project/qemu/-/issues/2884#note_2423361621 We notice that the vfio has always behaved this way, and the interrupt is a residue of the nic engine, so we fix the problem by moving the vector enable process out of the enable_irq loop. Fixes: 08a100689d4b ("net: hns3: re-organize vector handle") Signed-off-by: Yonglong Liu <liuyonglong@huawei.com> Signed-off-by: Jijie Shao <shaojijie@huawei.com> Link: https://patch.msgid.link/20250430093052.2400464-3-shaojijie@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: hns3: store rx VLAN tag offload state for VFJian Shen
The VF driver missed to store the rx VLAN tag strip state when user change the rx VLAN tag offload state. And it will default to enable the rx vlan tag strip when re-init VF device after reset. So if user disable rx VLAN tag offload, and trig reset, then the HW will still strip the VLAN tag from packet nad fill into RX BD, but the VF driver will ignore it for rx VLAN tag offload disabled. It may cause the rx VLAN tag dropped. Fixes: b2641e2ad456 ("net: hns3: Add support of hardware rx-vlan-offload to HNS3 VF driver") Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Jijie Shao <shaojijie@huawei.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250430093052.2400464-2-shaojijie@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01Merge branch '200GbE' of ↵Jakub Kicinski
git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue Tony Nguyen says: ==================== Intel Wired LAN Driver Updates 2025-04-29 (idpf, igc) For idpf: Michal fixes error path handling to remove memory leak. Larysa prevents reset from being called during shutdown. For igc: Jake adjusts locking order to resolve sleeping in atomic context. * '200GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue: igc: fix lock order in igc_ptp_reset idpf: protect shutdown from reset idpf: fix potential memory leak on kcalloc() failure ==================== Link: https://patch.msgid.link/20250429221034.3909139-1-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01octeon_ep: Fix host hang issue during device rebootSathesh B Edara
When the host loses heartbeat messages from the device, the driver calls the device-specific ndo_stop function, which frees the resources. If the driver is unloaded in this scenario, it calls ndo_stop again, attempting to free resources that have already been freed, leading to a host hang issue. To resolve this, dev_close should be called instead of the device-specific stop function.dev_close internally calls ndo_stop to stop the network interface and performs additional cleanup tasks. During the driver unload process, if the device is already down, ndo_stop is not called. Fixes: 5cb96c29aa0e ("octeon_ep: add heartbeat monitor") Signed-off-by: Sathesh B Edara <sedara@marvell.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250429114624.19104-1-sedara@marvell.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: fec: ERR007885 Workaround for conventional TXMattias Barthel
Activate TX hang workaround also in fec_enet_txq_submit_skb() when TSO is not enabled. Errata: ERR007885 Symptoms: NETDEV WATCHDOG: eth0 (fec): transmit queue 0 timed out commit 37d6017b84f7 ("net: fec: Workaround for imx6sx enet tx hang when enable three queues") There is a TDAR race condition for mutliQ when the software sets TDAR and the UDMA clears TDAR simultaneously or in a small window (2-4 cycles). This will cause the udma_tx and udma_tx_arbiter state machines to hang. So, the Workaround is checking TDAR status four time, if TDAR cleared by hardware and then write TDAR, otherwise don't set TDAR. Fixes: 53bb20d1faba ("net: fec: add variable reg_desc_active to speed things up") Signed-off-by: Mattias Barthel <mattias.barthel@atlascopco.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20250429090826.3101258-1-mattiasbarthel@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: lan743x: Fix memleak issue when GSO enabledThangaraj Samynathan
Always map the `skb` to the LS descriptor. Previously skb was mapped to EXT descriptor when the number of fragments is zero with GSO enabled. Mapping the skb to EXT descriptor prevents it from being freed, leading to a memory leak Fixes: 23f0703c125b ("lan743x: Add main source files for new lan743x driver") Signed-off-by: Thangaraj Samynathan <thangaraj.s@microchip.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/20250429052527.10031-1-thangaraj.s@microchip.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01ptp: ocp: Fix NULL dereference in Adva board SMA sysfs operationsSagi Maimon
On Adva boards, SMA sysfs store/get operations can call __handle_signal_outputs() or __handle_signal_inputs() while the `irig` and `dcf` pointers are uninitialized, leading to a NULL pointer dereference in __handle_signal() and causing a kernel crash. Adva boards don't use `irig` or `dcf` functionality, so add Adva-specific callbacks `ptp_ocp_sma_adva_set_outputs()` and `ptp_ocp_sma_adva_set_inputs()` that avoid invoking `irig` or `dcf` input/output routines. Fixes: ef61f5528fca ("ptp: ocp: add Adva timecard support") Signed-off-by: Sagi Maimon <maimon.sagi@gmail.com> Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev> Link: https://patch.msgid.link/20250429073320.33277-1-maimon.sagi@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01net: use sock_gen_put() when sk_state is TCP_TIME_WAITJibin Zhang
It is possible for a pointer of type struct inet_timewait_sock to be returned from the functions __inet_lookup_established() and __inet6_lookup_established(). This can cause a crash when the returned pointer is of type struct inet_timewait_sock and sock_put() is called on it. The following is a crash call stack that shows sk->sk_wmem_alloc being accessed in sk_free() during the call to sock_put() on a struct inet_timewait_sock pointer. To avoid this issue, use sock_gen_put() instead of sock_put() when sk->sk_state is TCP_TIME_WAIT. mrdump.ko ipanic() + 120 vmlinux notifier_call_chain(nr_to_call=-1, nr_calls=0) + 132 vmlinux atomic_notifier_call_chain(val=0) + 56 vmlinux panic() + 344 vmlinux add_taint() + 164 vmlinux end_report() + 136 vmlinux kasan_report(size=0) + 236 vmlinux report_tag_fault() + 16 vmlinux do_tag_recovery() + 16 vmlinux __do_kernel_fault() + 88 vmlinux do_bad_area() + 28 vmlinux do_tag_check_fault() + 60 vmlinux do_mem_abort() + 80 vmlinux el1_abort() + 56 vmlinux el1h_64_sync_handler() + 124 vmlinux > 0xFFFFFFC080011294() vmlinux __lse_atomic_fetch_add_release(v=0xF2FFFF82A896087C) vmlinux __lse_atomic_fetch_sub_release(v=0xF2FFFF82A896087C) vmlinux arch_atomic_fetch_sub_release(i=1, v=0xF2FFFF82A896087C) + 8 vmlinux raw_atomic_fetch_sub_release(i=1, v=0xF2FFFF82A896087C) + 8 vmlinux atomic_fetch_sub_release(i=1, v=0xF2FFFF82A896087C) + 8 vmlinux __refcount_sub_and_test(i=1, r=0xF2FFFF82A896087C, oldp=0) + 8 vmlinux __refcount_dec_and_test(r=0xF2FFFF82A896087C, oldp=0) + 8 vmlinux refcount_dec_and_test(r=0xF2FFFF82A896087C) + 8 vmlinux sk_free(sk=0xF2FFFF82A8960700) + 28 vmlinux sock_put() + 48 vmlinux tcp6_check_fraglist_gro() + 236 vmlinux tcp6_gro_receive() + 624 vmlinux ipv6_gro_receive() + 912 vmlinux dev_gro_receive() + 1116 vmlinux napi_gro_receive() + 196 ccmni.ko ccmni_rx_callback() + 208 ccmni.ko ccmni_queue_recv_skb() + 388 ccci_dpmaif.ko dpmaif_rxq_push_thread() + 1088 vmlinux kthread() + 268 vmlinux 0xFFFFFFC08001F30C() Fixes: c9d1d23e5239 ("net: add heuristic for enabling TCP fraglist GRO") Signed-off-by: Jibin Zhang <jibin.zhang@mediatek.com> Signed-off-by: Shiming Cheng <shiming.cheng@mediatek.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/20250429020412.14163-1-shiming.cheng@mediatek.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01bnxt_en: fix module unload sequenceVadim Fedorenko
Recent updates to the PTP part of bnxt changed the way PTP FIFO is cleared, skbs waiting for TX timestamps are now cleared during ndo_close() call. To do clearing procedure, the ptp structure must exist and point to a valid address. Module destroy sequence had ptp clear code running before netdev close causing invalid memory access and kernel crash. Change the sequence to destroy ptp structure after device close. Fixes: 8f7ae5a85137 ("bnxt_en: improve TX timestamping FIFO configuration") Reported-by: Taehee Yoo <ap420073@gmail.com> Closes: https://lore.kernel.org/netdev/CAMArcTWDe2cd41=ub=zzvYifaYcYv-N-csxfqxUvejy_L0D6UQ@mail.gmail.com/ Signed-off-by: Vadim Fedorenko <vadfed@meta.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Michael Chan <michael.chan@broadcom.com> Tested-by: Taehee Yoo <ap420073@gmail.com> Link: https://patch.msgid.link/20250430170343.759126-1-vadfed@meta.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-05-01Merge tag 'nvme-6.15-2025-05-01' of git://git.infradead.org/nvme into block-6.15Jens Axboe
Pull NVMe fixes from Christoph: "nvme fixes for Linux 6.15 - fix queue unquiesce check on PCI slot_reset (Keith Busch) - fix premature queue removal and I/O failover in nvme-tcp (Michael Liang) - don't restore null sk_state_change (Alistair Francis) - select CONFIG_TLS where needed (Alistair Francis) - always free derived key data (Hannes Reinecke) - more quirks (Wentao Guan)" * tag 'nvme-6.15-2025-05-01' of git://git.infradead.org/nvme: nvmet-auth: always free derived key data nvmet-tcp: don't restore null sk_state_change nvmet-tcp: select CONFIG_TLS from CONFIG_NVME_TARGET_TCP_TLS nvme-tcp: select CONFIG_TLS from CONFIG_NVME_TCP_TLS nvme-tcp: fix premature queue removal and I/O failover nvme-pci: add quirks for WDC Blue SN550 15b7:5009 nvme-pci: add quirks for device 126f:1001 nvme-pci: fix queue unquiesce check on slot_reset
2025-05-01smb: client: ensure aligned IO sizesPaulo Alcantara
Make all IO sizes multiple of PAGE_SIZE, either negotiated by the server or passed through rsize, wsize and bsize mount options, to prevent from breaking DIO reads and writes against servers that enforce alignment as specified in MS-FSA 2.1.5.3 and 2.1.5.4. Cc: linux-cifs@vger.kernel.org Reviewed-by: David Howells <dhowells@redhat.com> Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2025-05-01bcachefs: Kill ERO for i_blocks check in truncateKent Overstreet
Replace with logging the error in the superblock. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2025-05-01bcachefs: check for inode.bi_sectors underflowKent Overstreet
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2025-05-01bcachefs: Kill ERO in __bch2_i_sectors_acct()Kent Overstreet
We won't be root causing this in the immediate future, and it's fairly innocuous - so just log it in the superblock. https://github.com/koverstreet/bcachefs/issues/869 Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2025-05-01Merge tag 'asoc-fix-v6.15-rc4' of ↵Takashi Iwai
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Fixes for v6.15 A moderately large batch of fixes for v6.15, many driver specific including cleanups for the enabling of the Cirrus KUnit tests and a fix for a nasty crash on resume on AMD systems. We also have one core fix, for an ordering issue between DAPM and DPCM which could leave things incorrectly unpowered.
2025-05-01ASoC: intel/sdw_utils: Add volume limits to CS35L56Mark Brown
Merge series from Stefan Binding <sbinding@opensource.cirrus.com>: Both CS35L56 and CS42L43 have maximum volumes above 0dB. However, for many use cases, this can cause distorted audio, depending various factors, such as other signal-processing elements in the chain, for example if the audio passes through a gain control before reaching the amp or the signal path has been tuned for a particular maximum gain in the amp. In the cases where systems use the soc_sdw_* drivers, audio above the 0dB volume will likely always be distorted, therefore apply a 0dB limit to those devices. Stefan Binding (2): ASoC: intel/sdw_utils: Add volume limit to cs42l43 speakers ASoC: intel/sdw_utils: Add volume limit to cs35l56 speakers include/sound/soc_sdw_utils.h | 1 + sound/soc/sdw_utils/soc_sdw_bridge_cs35l56.c | 4 ++++ sound/soc/sdw_utils/soc_sdw_cs42l43.c | 10 ++++++++ sound/soc/sdw_utils/soc_sdw_cs_amp.c | 24 ++++++++++++++++++++ 4 files changed, 39 insertions(+) -- 2.43.0
2025-05-01ASoC: stm32: sai: fix kernel rate configurationMark Brown
Merge series from Olivier Moysan <olivier.moysan@foss.st.com>: This patchset adds some checks on kernel minimum rate requirements. This avoids potential clock rate misconfiguration, when setting the kernel frequency on STM32MP2 SoCs.
2025-05-01Merge tag 'drm-misc-fixes-2025-04-30' of ↵Dave Airlie
https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes A spurious WARN fix for nouveau, an init and interrupt handling fixes for ivpu, a warning fix for ttm, a hotplug fix for fdinfo, vblank fixes for adp, a memory leak fix for the shmem kunit tests, and a timing fix for mipi-dbi. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <mripard@redhat.com> Link: https://lore.kernel.org/r/20250430-dark-eggplant-trout-c4ea6c@houat
2025-04-30kbuild: Properly disable -Wunterminated-string-initialization for clangNathan Chancellor
Clang and GCC have different behaviors around disabling warnings included in -Wall and -Wextra and the order in which flags are specified, which is exposed by clang's new support for -Wunterminated-string-initialization. $ cat test.c const char foo[3] = "FOO"; const char bar[3] __attribute__((__nonstring__)) = "BAR"; $ clang -fsyntax-only -Wextra test.c test.c:1:21: warning: initializer-string for character array is too long, array size is 3 but initializer has size 4 (including the null terminating character); did you mean to use the 'nonstring' attribute? [-Wunterminated-string-initialization] 1 | const char foo[3] = "FOO"; | ^~~~~ $ clang -fsyntax-only -Wextra -Wno-unterminated-string-initialization test.c $ clang -fsyntax-only -Wno-unterminated-string-initialization -Wextra test.c test.c:1:21: warning: initializer-string for character array is too long, array size is 3 but initializer has size 4 (including the null terminating character); did you mean to use the 'nonstring' attribute? [-Wunterminated-string-initialization] 1 | const char foo[3] = "FOO"; | ^~~~~ $ gcc -fsyntax-only -Wextra test.c test.c:1:21: warning: initializer-string for array of ‘char’ truncates NUL terminator but destination lacks ‘nonstring’ attribute (4 chars into 3 available) [-Wunterminated-string-initialization] 1 | const char foo[3] = "FOO"; | ^~~~~ $ gcc -fsyntax-only -Wextra -Wno-unterminated-string-initialization test.c $ gcc -fsyntax-only -Wno-unterminated-string-initialization -Wextra test.c Move -Wextra up right below -Wall in Makefile.extrawarn to ensure these flags are at the beginning of the warning options list. Move the couple of warning options that have been added to the main Makefile since commit e88ca24319e4 ("kbuild: consolidate warning flags in scripts/Makefile.extrawarn") to scripts/Makefile.extrawarn after -Wall / -Wextra to ensure they get properly disabled for all compilers. Fixes: 9d7a0577c9db ("gcc-15: disable '-Wunterminated-string-initialization' entirely for now") Link: https://github.com/llvm/llvm-project/issues/10359 Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-05-01ASoC: amd: ps: fix for irq handler return statusVijendar Mukunda
If any Soundwire manager interrupt is reported, and wake interrupt is not reported, in this scenario irq_flag will be set to zero, which results in interrupt handler return status as IRQ_NONE. Add new irq flag 'wake_irq_flag' check for SoundWire wake interrupt handling to fix incorrect irq handling return status. Fixes: 3898b189079c8 ("ASoC: amd: ps: add soundwire wake interrupt handling") Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Link: https://patch.msgid.link/20250430195517.3065308-1-Vijendar.Mukunda@amd.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-05-01ASoC: simple-card-utils: Fix pointer check in graph_util_parse_link_directionAlexander Stein
Actually check if the passed pointers are valid, before writing to them. This also fixes a USBAN warning: UBSAN: invalid-load in ../sound/soc/fsl/imx-card.c:687:25 load of value 255 is not a valid value for type '_Bool' This is because playback_only is uninitialized and is not written to, as the playback-only property is absent. Fixes: 844de7eebe97 ("ASoC: audio-graph-card2: expand dai_link property part") Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> Link: https://patch.msgid.link/20250429094910.1150970-1-alexander.stein@ew.tq-group.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-05-01ASoC: intel/sdw_utils: Add volume limit to cs35l56 speakersStefan Binding
The volume control for cs35l56 speakers has a maximum gain of +12 dB. However, for many use cases, this can cause distorted audio, depending various factors, such as other signal-processing elements in the chain, for example if the audio passes through a gain control before reaching the amp or the signal path has been tuned for a particular maximum gain in the amp. In the case of systems which use the soc_sdw_* driver, audio will likely be distorted in all cases above 0 dB, therefore add a volume limit of 400, which is 0 dB maximum volume inside this driver. The volume limit should be applied to both soundwire and soundwire bridge configurations. Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> Link: https://patch.msgid.link/20250430103134.24579-3-sbinding@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-05-01ASoC: intel/sdw_utils: Add volume limit to cs42l43 speakersStefan Binding
The volume control for cs42l43 speakers has a maximum gain of +31.5 dB. However, for many use cases, this can cause distorted audio, depending various factors, such as other signal-processing elements in the chain, for example if the audio passes through a gain control before reaching the codec or the signal path has been tuned for a particular maximum gain in the codec. In the case of systems which use the soc_sdw_cs42l43 driver, audio will likely be distorted in all cases above 0 dB, therefore add a volume limit of 128, which is 0 dB maximum volume inside this driver. Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://patch.msgid.link/20250430103134.24579-2-sbinding@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-05-01ASoC: stm32: sai: add a check on minimal kernel frequencyOlivier Moysan
On MP2 SoCs SAI kernel clock rate is managed through stm32_sai_set_parent_rate() function. If the kernel clock rate was set previously to a low frequency, this frequency may be too low to support the newly requested audio stream rate. However the stm32_sai_rate_accurate() will only check accuracy against the maximum kernel clock rate. The function will return leaving the kernel clock rate unchanged. Add a check on minimal frequency requirement, to avoid this. Fixes: 2cfe1ff22555 ("ASoC: stm32: sai: add stm32mp25 support") Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Link: https://patch.msgid.link/20250430165210.321273-3-olivier.moysan@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-05-01ASoC: stm32: sai: skip useless iterations on kernel rate loopOlivier Moysan
the frequency of the kernel clock must be greater than or equal to the bitclock rate. When searching for a convenient kernel clock rate in stm32_sai_set_parent_rate() function, it is useless to continue the loop below bitclock rate, as it will result in a invalid kernel clock rate. Change the loop output condition. Fixes: 2cfe1ff22555 ("ASoC: stm32: sai: add stm32mp25 support") Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> Link: https://patch.msgid.link/20250430165210.321273-2-olivier.moysan@foss.st.com Signed-off-by: Mark Brown <broonie@kernel.org>
2025-04-30genirq/msi: Prevent NULL pointer dereference in msi_domain_debug_show()Andrew Jones
irq_domain_debug_show_one() calls msi_domain_debug_show() with a non-NULL domain pointer and a NULL irq_data pointer. irq_debug_show_data() calls it with a NULL domain pointer. The domain pointer is not used, but the irq_data pointer is required to be non-NULL and lacks a NULL pointer check. Add the missing NULL pointer check to ensure there is a non-NULL irq_data pointer in msi_domain_debug_show() before dereferencing it. [ tglx: Massaged change log ] Fixes: 01499ae673dc ("genirq/msi: Expose MSI message data in debugfs") Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250430124836.49964-2-ajones@ventanamicro.com
2025-04-30dm: add missing unlock on in dm_keyslot_evict()Dan Carpenter
We need to call dm_put_live_table() even if dm_get_live_table() returns NULL. Fixes: 9355a9eb21a5 ("dm: support key eviction from keyslot managers of underlying devices") Cc: stable@vger.kernel.org # v5.12+ Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
2025-04-30ALSA: hda/realtek - Add more HP laptops which need mute led fixupChris Chiu
More HP EliteBook with Realtek HDA codec ALC3247 and combined CS35L56 Amplifiers need quirk ALC236_FIXUP_HP_GPIO_LED to fix the micmute LED. Signed-off-by: Chris Chiu <chris.chiu@canonical.com> Cc: <stable@vger.kernel.org> Link: https://patch.msgid.link/20250430101843.150833-1-chris.chiu@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2025-04-30Merge tag 'for-6.15-rc4-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fixes from David Sterba: - fix potential inode leak in iget() after memory allocation failure - in subpage mode, fix extent buffer bitmap iteration when writing out dirty sectors - fix range calculation when falling back to COW for a NOCOW file * tag 'for-6.15-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: adjust subpage bit start based on sectorsize btrfs: fix the inode leak in btrfs_iget() btrfs: fix COW handling in run_delalloc_nocow()
2025-04-30bcachefs: readdir fixesKent Overstreet
- Don't call bch2_trans_relock() after dir_emit(); taking a transaction restart here will cause us to emit the same dirent to userspace twice - Fix incorrect checking of the return value on dir_emit(): "true" means success, keep going, but bch2_dir_emit() needs to return true when we're finished iterating. https://github.com/koverstreet/bcachefs/issues/867 Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2025-04-30bcachefs: improve missing journal write device error messageKent Overstreet
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2025-04-30Merge tag 'modules-6.15-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux Pull modules fixes from Petr Pavlu: "A single series to properly handle the module_kobject creation. This fixes a problem with missing /sys/module/<module>/drivers for built-in modules" * tag 'modules-6.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux: drivers: base: handle module_kobject creation kernel: globalize lookup_or_create_module_kobject() kernel: refactor lookup_or_create_module_kobject() kernel: param: rename locate_module_kobject
2025-04-30cifs: Fix changing times and read-only attr over SMB1 smb_set_file_info() ↵Pali Rohár
function Function CIFSSMBSetPathInfo() is not supported by non-NT servers and returns error. Fallback code via open filehandle and CIFSSMBSetFileInfo() does not work neither because CIFS_open() works also only on NT server. Therefore currently the whole smb_set_file_info() function as a SMB1 callback for the ->set_file_info() does not work with older non-NT SMB servers, like Win9x and others. This change implements fallback code in smb_set_file_info() which will works with any server and allows to change time values and also to set or clear read-only attributes. To make existing fallback code via CIFSSMBSetFileInfo() working with also non-NT servers, it is needed to change open function from CIFS_open() (which is NT specific) to cifs_open_file() which works with any server (this is just a open wrapper function which choose the correct open function supported by the server). CIFSSMBSetFileInfo() is working also on non-NT servers, but zero time values are not treated specially. So first it is needed to fill all time values if some of them are missing, via cifs_query_path_info() call. There is another issue, opening file in write-mode (needed for changing attributes) is not possible when the file has read-only attribute set. The only option how to clear read-only attribute is via SMB_COM_SETATTR command. And opening directory is not possible neither and here the SMB_COM_SETATTR command is the only option how to change attributes. And CIFSSMBSetFileInfo() does not honor setting read-only attribute, so for setting is also needed to use SMB_COM_SETATTR command. Existing code in cifs_query_path_info() is already using SMB_COM_GETATTR as a fallback code path (function SMBQueryInformation()), so introduce a new function SMBSetInformation which will implement SMB_COM_SETATTR command. My testing showed that Windows XP SMB1 client is also using SMB_COM_SETATTR command for setting or clearing read-only attribute against non-NT server. So this can prove that this is the correct way how to do it. With this change it is possible set all 4 time values and all attributes, including clearing and setting read-only bit on non-NT SMB servers. Tested against Win98 SMB1 server. This change fixes "touch" command which was failing when called on existing file. And fixes also "chmod +w" and "chmod -w" commands which were also failing (as they are changing read-only attribute). Note that this change depends on following change "cifs: Improve cifs_query_path_info() and cifs_query_file_info()" as it require to query all 4 time attribute values. Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
2025-04-30cifs: Fix and improve cifs_query_path_info() and cifs_query_file_info()Pali Rohár
When CAP_NT_SMBS was not negotiated then do not issue CIFSSMBQPathInfo() and CIFSSMBQFileInfo() commands. CIFSSMBQPathInfo() is not supported by non-NT Win9x SMB server and CIFSSMBQFileInfo() returns from Win9x SMB server bogus data in Attributes field (for example lot of files are marked as reparse points, even Win9x does not support them and read-only bit is not marked for read-only files). Correct information is returned by CIFSFindFirst() or SMBQueryInformation() command. So as a fallback in cifs_query_path_info() function use CIFSFindFirst() with SMB_FIND_FILE_FULL_DIRECTORY_INFO level which is supported by both NT and non-NT servers and as a last option use SMBQueryInformation() as it was before. And in function cifs_query_file_info() immediately returns -EOPNOTSUPP when not communicating with NT server. Client then revalidate inode entry by the cifs_query_path_info() call, which is working fine. So fstat() syscall on already opened file will receive correct information. Note that both fallback functions in non-UNICODE mode expands wildcards. Therefore those fallback functions cannot be used on paths which contain SMB wildcard characters (* ? " > <). CIFSFindFirst() returns all 4 time attributes as opposite of SMBQueryInformation() which returns only one. With this change it is possible to query all 4 times attributes from Win9x server and at the same time, client minimize sending of unsupported commands to server. Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>