------------[ cut here ]------------ WARNING: CPU: 1 PID: 23 at fs/read_write.c:517 __kernel_write+0x8e5/0xa60 fs/read_write.c:517 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 5.8.0-rc6-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+0x1f0/0x31e lib/dump_stack.c:118 panic+0x264/0x7a0 kernel/panic.c:231 __warn+0x227/0x250 kernel/panic.c:600 report_bug+0x1b1/0x2e0 lib/bug.c:198 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:235 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:540 RIP: 0010:__kernel_write+0x8e5/0xa60 fs/read_write.c:517 Code: c1 e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 f3 da f6 ff 49 89 1c 24 e9 f8 f8 ff ff e8 f5 cb b7 ff e9 ee f8 ff ff e8 eb cb b7 ff <0f> 0b 49 c7 c6 f7 ff ff ff e9 81 fc ff ff 44 89 f9 80 e1 07 80 c1 RSP: 0018:ffffc90000df7b20 EFLAGS: 00010293 RAX: ffffffff81bcc615 RBX: 00000000000a001d RCX: ffff8880a9bfe000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 1ffff1101296fa28 R08: ffffffff81bcbd97 R09: ffffed1012a3b8b9 R10: ffffed1012a3b8b9 R11: 0000000000000000 R12: 0000000000000015 R13: ffff888094b7d1d8 R14: ffff888094b7d0c0 R15: ffff888094b7d144 kernel_write+0x114/0x1e0 fs/read_write.c:552 p9_fd_write net/9p/trans_fd.c:424 [inline] p9_write_work+0x588/0xcc0 net/9p/trans_fd.c:475 process_one_work+0x789/0xfc0 kernel/workqueue.c:2269 worker_thread+0xaa4/0x1460 kernel/workqueue.c:2415 kthread+0x37e/0x3a0 drivers/block/aoe/aoecmd.c:1234 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 Kernel Offset: disabled Rebooting in 86400 seconds..