------------[ cut here ]------------ WARNING: CPU: 0 PID: 8140 at kernel/trace/ring_buffer.c:3526 check_buffer+0x88a/0x930 kernel/trace/ring_buffer.c:3526 Modules linked in: CPU: 0 PID: 8140 Comm: udevd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:check_buffer+0x88a/0x930 kernel/trace/ring_buffer.c:3526 Code: 4c 89 ee e8 88 26 a2 08 48 c7 c7 20 04 c6 96 be 04 00 00 00 e8 67 31 4e 00 f0 ff 0d 40 bc 40 15 e9 91 fe ff ff e8 f6 ea fc ff <0f> 0b e9 e2 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 20 f8 ff RSP: 0018:ffffc900035571c0 EFLAGS: 00010093 RAX: ffffffff818547ea RBX: 0000000000000003 RCX: ffff88802a060000 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 RBP: ffffc90003557378 R08: ffff888017478807 R09: 1ffff11002e8f100 R10: dffffc0000000000 R11: ffffed1002e8f101 R12: 0000000004ccb519 R13: 0000000000000034 R14: ffff888017478800 R15: dffffc0000000000 FS: 00007fa59eb4b880(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa59eb3f000 CR3: 0000000077e1d000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __rb_reserve_next+0x4d9/0xd00 kernel/trace/ring_buffer.c:3622 rb_reserve_next_event kernel/trace/ring_buffer.c:3757 [inline] ring_buffer_lock_reserve+0xafa/0xf10 kernel/trace/ring_buffer.c:3816 __trace_buffer_lock_reserve kernel/trace/trace.c:956 [inline] trace_event_buffer_lock_reserve+0x1ce/0x6f0 kernel/trace/trace.c:2843 trace_event_buffer_reserve+0x2a8/0x3d0 kernel/trace/trace_events.c:647 do_trace_event_raw_event_lock_acquire include/trace/events/lock.h:24 [inline] trace_event_raw_event_lock_acquire+0x124/0x290 include/trace/events/lock.h:24 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x452/0x4a0 kernel/locking/lockdep.c:5649 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0xab/0xf0 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] filemap_remove_folio+0xe3/0x2c0 mm/filemap.c:254 truncate_inode_folio+0x59/0x70 mm/truncate.c:195 shmem_undo_range+0x554/0x21d0 mm/shmem.c:942 shmem_truncate_range mm/shmem.c:1062 [inline] shmem_evict_inode+0x225/0x9f0 mm/shmem.c:1171 evict+0x4b6/0x8b0 fs/inode.c:705 __dentry_kill+0x412/0x630 fs/dcache.c:611 dentry_kill+0xb8/0x290 fs/dcache.c:-1 dput+0xfa/0x1d0 fs/dcache.c:918 __fput+0x597/0x8b0 fs/file_table.c:328 task_work_run+0x1d0/0x260 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:180 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213 __syscall_exit_to_user_mode_work kernel/entry/common.c:295 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:306 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa59e4a7407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007fff27666b60 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007fa59eb4b880 RCX: 00007fa59e4a7407 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008 RBP: 00007fa59eb4b6e8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 R13: 000055ee87c21410 R14: 0000000000000008 R15: 000055ee87c23320 </TASK>