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WARNING: CPU: 0 PID: 8394 at fs/read_write.c:509 fsnotify_file include/linux/fsnotify.h:78 [inline]
WARNING: CPU: 0 PID: 8394 at fs/read_write.c:509 fsnotify_modify include/linux/fsnotify.h:257 [inline]
WARNING: CPU: 0 PID: 8394 at fs/read_write.c:509 __kernel_write+0xfd/0x120 fs/read_write.c:522
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8394 Comm: kworker/0:4 Not tainted 5.8.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events p9_write_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xb3/0xec lib/dump_stack.c:118
 panic+0x115/0x2fa kernel/panic.c:231
 __warn.cold.13+0x20/0x25 kernel/panic.c:600
 report_bug+0xc0/0xf0 lib/bug.c:198
 handle_bug+0x35/0x90 arch/x86/kernel/traps.c:235
 exc_invalid_op+0x13/0x60 arch/x86/kernel/traps.c:255
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:542
RIP: 0010:__kernel_write+0xfd/0x120 fs/read_write.c:509
Code: 8b 04 25 00 7f 01 00 48 01 a8 a0 10 00 00 eb 8a 45 31 c9 45 31 c0 b9 01 00 00 00 4c 89 f2 89 de 4c 89 ef e8 a5 95 05 00 eb d4 <0f> 0b 48 c7 c5 f7 ff ff ff e9 73 ff ff ff 48 c7 c5 ea ff ff ff e9
RSP: 0018:ffffc90002b8fdc0 EFLAGS: 00010246
RAX: 00000000040a0001 RBX: ffff88812a4e9a00 RCX: ffff88812a4e9b18
RDX: 0000000000000015 RSI: ffff88811116a000 RDI: ffff88812a4e9a00
RBP: 0000000000000015 R08: 0000000000000000 R09: 0000000000000000
R10: ffff88810f40ebd0 R11: 18a3fb7e5efbefec R12: ffff88812a4e9b18
R13: ffff88811116a000 R14: ffff88812a69ecc0 R15: ffff888118e2fe30
 kernel_write+0x5d/0xb0 fs/read_write.c:539
 p9_fd_write net/9p/trans_fd.c:424 [inline]
 p9_write_work+0x88/0x2f0 net/9p/trans_fd.c:475
 process_one_work+0x26a/0x5f0 kernel/workqueue.c:2269
 worker_thread+0x38/0x380 kernel/workqueue.c:2415
 kthread+0x148/0x170 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Kernel Offset: disabled
Rebooting in 86400 seconds..