------------[ cut here ]------------ WARNING: CPU: 1 PID: 7498 at fs/read_write.c:432 __kernel_read+0x81e/0x9a0 fs/read_write.c:432 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7498 Comm: kworker/1:3 Not tainted 5.8.0-rc4-next-20200710-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events p9_read_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x45 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x13/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:542 RIP: 0010:__kernel_read+0x81e/0x9a0 fs/read_write.c:432 Code: 01 00 00 8b 42 0c 31 ff 83 e0 01 89 c6 89 04 24 e8 77 b3 b5 ff 8b 04 24 85 c0 0f 84 ca fa ff ff e9 bc fa ff ff e8 e2 b6 b5 ff <0f> 0b 49 c7 c5 ea ff ff ff e9 18 ff ff ff 4c 89 f7 e8 ac 52 f5 ff RSP: 0018:ffffc900088cfab8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 1ffff92001119f5b RCX: ffffffff81be3201 RDX: ffff888054b94040 RSI: ffffffff81be394e RDI: 0000000000000005 RBP: ffffc900088cfc98 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a8e0e580 R13: 0000000000000001 R14: ffff8880a8e0e604 R15: 00000000081d801e kernel_read+0x52/0x70 fs/read_write.c:469 p9_fd_read net/9p/trans_fd.c:263 [inline] p9_read_work+0x2ac/0xff0 net/9p/trans_fd.c:298 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Kernel Offset: disabled Rebooting in 86400 seconds..