syzbot


kernel BUG in assoc_array_insert
Status: auto-closed as invalid on 2021/05/06 05:49
Reported-by: syzbot+ca3a281e39f37e81c409@syzkaller.appspotmail.com
First crash: 476d, last: 476d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in assoc_array_insert (2) 2 303d 302d 0/22 auto-closed as invalid on 2021/11/25 12:38
upstream kernel BUG at lib/assoc_array.c:LINE! 1 844d 843d 0/22 auto-closed as invalid on 2020/06/02 12:38
upstream kernel BUG at lib/assoc_array.c:LINE! (2) 2 612d 620d 0/22 auto-closed as invalid on 2021/01/20 08:28

Sample crash report:
------------[ cut here ]------------
kernel BUG at lib/assoc_array.c:652!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 2993 Comm: kworker/0:2 Not tainted 5.11.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: afs afs_manage_cell_work
RIP: 0010:assoc_array_insert_into_terminal_node lib/assoc_array.c:652 [inline]
RIP: 0010:assoc_array_insert+0x1e53/0x2e70 lib/assoc_array.c:1001
Code: 0f 84 c4 fe ff ff e8 1c d5 f1 fd e9 ba fe ff ff e8 02 3b af fd 0f 0b e8 fb 3a af fd 0f 0b e8 f4 3a af fd 0f 0b e8 ed 3a af fd <0f> 0b 48 8b 04 24 4c 89 7c 24 50 48 b9 00 00 00 00 00 fc ff df 41
RSP: 0018:ffffc900017077a8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000000
RDX: ffff88801b528040 RSI: ffffffff83c398a3 RDI: ffff88801ae4c250
RBP: ffff88801e9de690 R08: 0000000000000010 R09: 0000000000000000
R10: ffffffff83c39135 R11: 0000000000000000 R12: ffff88801ae4c290
R13: 000000000000000f R14: ffff888023d3a700 R15: ffff88801f7ee000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f54c3fb7000 CR3: 000000006811c000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __key_link_begin+0xec/0x250 security/keys/keyring.c:1314
 construct_alloc_key security/keys/request_key.c:404 [inline]
 construct_key_and_link security/keys/request_key.c:499 [inline]
 request_key_and_link+0x7ac/0x1270 security/keys/request_key.c:637
 request_key_tag+0x4e/0xb0 security/keys/request_key.c:701
 dns_query+0x257/0x6d0 net/dns_resolver/dns_query.c:128
 afs_dns_query+0x122/0x390 fs/afs/addr_list.c:249
 afs_update_cell fs/afs/cell.c:402 [inline]
 afs_manage_cell fs/afs/cell.c:784 [inline]
 afs_manage_cell_work+0xa05/0x11f0 fs/afs/cell.c:840
 process_one_work+0x98d/0x15f0 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
---[ end trace 00cff402f5b0a0cc ]---
RIP: 0010:assoc_array_insert_into_terminal_node lib/assoc_array.c:652 [inline]
RIP: 0010:assoc_array_insert+0x1e53/0x2e70 lib/assoc_array.c:1001
Code: 0f 84 c4 fe ff ff e8 1c d5 f1 fd e9 ba fe ff ff e8 02 3b af fd 0f 0b e8 fb 3a af fd 0f 0b e8 f4 3a af fd 0f 0b e8 ed 3a af fd <0f> 0b 48 8b 04 24 4c 89 7c 24 50 48 b9 00 00 00 00 00 fc ff df 41
RSP: 0018:ffffc900017077a8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000000000
RDX: ffff88801b528040 RSI: ffffffff83c398a3 RDI: ffff88801ae4c250
RBP: ffff88801e9de690 R08: 0000000000000010 R09: 0000000000000000
R10: ffffffff83c39135 R11: 0000000000000000 R12: ffff88801ae4c290
R13: 000000000000000f R14: ffff888023d3a700 R15: ffff88801f7ee000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f986500ff20 CR3: 0000000036126000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/02/05 05:48 upstream 5c279c4cf206 23a562df .config log report info kernel BUG in assoc_array_insert