| TITLE: WARNING: locking bug in corrupted |
| CORRUPTED: Y |
| |
| [ 336.564505] FAULT_INJECTION: forcing a failure. |
| [ 336.564505] name failslab, interval 1, probability 0, space 0, times 0 |
| [ 336.578590] CPU: 0 PID: 13847 Comm: syz-executor3 Not tainted 4.20.0+ #1 |
| [ 336.580236] ------------[ cut here ]------------ |
| [ 336.585429] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 336.590173] downgrading a read lock |
| [ 336.590271] WARNING: CPU: 1 PID: 13845 at kernel/locking/lockdep.c:3553 lock_downgrade+0x4d2/0x910 |
| [ 336.599526] Call Trace: |
| [ 336.603137] Kernel panic - not syncing: panic_on_warn set ... |
| [ 336.612244] dump_stack+0x1db/0x2d0 |
| [ 336.633577] should_fail.cold+0xa/0x15 |
| [ 336.659923] __should_failslab+0x121/0x190 |
| [ 336.664157] should_failslab+0x9/0x14 |
| [ 336.667956] __kmalloc+0x71/0x740 |
| [ 336.676549] __tty_buffer_request_room+0x2bf/0x7e0 |
| [ 336.698234] tty_insert_flip_string_fixed_flag+0x93/0x1f0 |
| [ 336.703770] pty_write+0x133/0x200 |
| [ 336.707319] tty_send_xchar+0x28c/0x390 |
| [ 336.730525] n_tty_ioctl_helper+0x192/0x3b0 |
| [ 336.734851] n_tty_ioctl+0x59/0x360 |
| [ 336.742550] tty_ioctl+0xb53/0x16c0 |
| [ 336.791102] do_vfs_ioctl+0x107b/0x17d0 |
| [ 336.840461] ksys_ioctl+0xab/0xd0 |
| [ 336.866478] entry_SYSCALL_64_after_hwframe+0x49/0xbe |
| [ 336.843912] __x64_sys_ioctl+0x73/0xb0 |
| [ 336.847797] do_syscall_64+0x1a3/0x800 |
| [ 336.871662] RIP: 0033:0x457ec9 |
| [ 336.874858] Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 |
| [ 336.893753] RSP: 002b:00007f75b4313c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 |
| [ 336.901468] RAX: ffffffffffffffda RBX: 00007f75b4313c90 RCX: 0000000000457ec9 |
| [ 336.908733] RDX: 0000000000000003 RSI: 000000000000540a RDI: 0000000000000003 |
| [ 336.915998] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 |
| [ 336.923260] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f75b43146d4 |
| [ 336.930521] R13: 00000000004c1eb5 R14: 00000000004d4168 R15: 0000000000000004 |
| [ 336.937822] CPU: 1 PID: 13845 Comm: blkid Not tainted 4.20.0+ #1 |
