syzbot


BUG: corrupted list in evict

Status: auto-closed as invalid on 2020/12/24 11:20
Reported-by: syzbot+13703db96cbf19bb034f@syzkaller.appspotmail.com
First crash: 672d, last: 672d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: corrupted list in evict 1 718d 713d 0/22 auto-closed as invalid on 2020/09/09 12:35
linux-4.19 BUG: corrupted list in evict 1 770d 770d 0/1 auto-closed as invalid on 2020/09/17 09:05

Sample crash report:
list_del corruption. prev->next should be ffff88805de2ba20, but was           (null)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:51!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 6347 Comm: syz-executor.0 Not tainted 4.14.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888094a8e140 task.stack: ffff888084570000
RIP: 0010:__list_del_entry_valid.cold+0xf/0x55 lib/list_debug.c:51
RSP: 0018:ffff888084577d50 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffff88805de2ba20 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff888094a8e9f0 RDI: ffffed10108aefa0
RBP: ffff88805de2ba20 R08: 0000000000000054 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88800041a7e0
R13: ffff8880440b66a0 R14: ffffffff86b94760 R15: ffff88805de2ba28
FS:  0000000002b8d940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00bcff000 CR3: 00000000933dc000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del_init include/linux/list.h:159 [inline]
 inode_sb_list_del fs/inode.c:449 [inline]
 evict+0x178/0x700 fs/inode.c:544
 iput_final fs/inode.c:1524 [inline]
 iput+0x458/0x7e0 fs/inode.c:1551
 do_unlinkat+0x35b/0x5c0 fs/namei.c:4098
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45d307
RSP: 002b:00007ffdff9935c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045d307
RDX: 00007ffdff9935e0 RSI: 00007ffdff9935e0 RDI: 00007ffdff993670
RBP: 00000000000013c0 R08: 0000000000000000 R09: 0000000000000011
R10: 000000000000000a R11: 0000000000000246 R12: 00007ffdff994700
R13: 0000000002b8ea60 R14: 0000000000000000 R15: 00007ffdff994700
Code: 86 e8 dc 9d 44 fe 0f 0b 48 89 f1 48 c7 c7 c0 62 e4 86 4c 89 e6 e8 c8 9d 44 fe 0f 0b 48 89 ee 48 c7 c7 60 64 e4 86 e8 b7 9d 44 fe <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 a0 63 e4 86 e8 a3 9d 44 fe 0f 
RIP: __list_del_entry_valid.cold+0xf/0x55 lib/list_debug.c:51 RSP: ffff888084577d50
---[ end trace a7626d85e745f309 ]---

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-linux-4-14 2020/08/26 11:19 linux-4.14.y d7e78d08fa77 318430cb .config log report