WARNING: CPU: 0 PID: 3312 at fs/buffer.c:1144 __brelse fs/buffer.c:1144 [inline] WARNING: CPU: 0 PID: 3312 at fs/buffer.c:1144 __brelse+0x67/0xa0 fs/buffer.c:1138 Kernel panic - not syncing: panic_on_warn set ... XFS (loop1): Ending clean mount CPU: 0 PID: 3312 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:__brelse fs/buffer.c:1144 [inline] RIP: 0010:__brelse+0x67/0xa0 fs/buffer.c:1138 Code: 7c 04 84 d2 75 4e 44 8b 63 60 31 ff 44 89 e6 e8 bf 16 b2 ff 45 85 e4 75 1c e8 45 15 b2 ff 48 c7 c7 e0 1c 75 88 e8 1e 4d 42 06 <0f> 0b 5b 5d 41 5c e9 2e 15 b2 ff e8 29 15 b2 ff be 04 00 00 00 48 RSP: 0018:ffff8880493d7c00 EFLAGS: 00010082 RAX: 0000000000000000 RBX: ffff88808cdb99d8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed100927af72 RBP: ffff88808cdb9a38 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c66501b R12: 0000000000000000 R13: dffffc0000000000 R14: ffff8880ba0287e0 R15: ffffffff81b08270 brelse include/linux/buffer_head.h:297 [inline] invalidate_bh_lru+0x90/0x140 fs/buffer.c:1385 on_each_cpu_mask+0xf7/0x240 kernel/smp.c:636 on_each_cpu_cond+0x12d/0x1c0 kernel/smp.c:684 kill_bdev fs/block_dev.c:85 [inline] __blkdev_put+0x29e/0x870 fs/block_dev.c:1813 blkdev_close+0x86/0xb0 fs/block_dev.c:1888 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f493a5bff7b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007ffe7a5aef70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f493a5bff7b RDX: ffffffffffffffb8 RSI: 0000001b2e4255a4 RDI: 0000000000000005 RBP: 00007f493a72f980 R08: 0000000000000000 R09: 000000003253460c R10: 00078c37bc6bd892 R11: 0000000000000293 R12: 00000000000b5f21 R13: 00007ffe7a5af070 R14: 00007f493a72e050 R15: 0000000000000032 Kernel Offset: disabled Rebooting in 86400 seconds..