syzbot


BUG: unable to handle kernel paging request in free_block (5)

Status: auto-obsoleted due to no activity on 2022/09/07 17:26
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+438a5abd4f53adb1c073@syzkaller.appspotmail.com
First crash: 2050d, last: 1608d
Cause bisection: introduced by (bisect log) :
commit 52dfae5c85a4c1078e9f1d5e8947d4a25f73dd81
Author: Jon Maloy <jon.maloy@ericsson.com>
Date: Thu Mar 22 19:42:52 2018 +0000

  tipc: obtain node identity from interface by default

Crash: inconsistent lock state in rhashtable_walk_enter (log)
Repro: syz .config
  
Fix bisection: fixed by (bisect log) :
commit 1378817486d6860f6a927f573491afe65287abf1
Author: Eric Dumazet <edumazet@google.com>
Date: Thu May 21 18:29:58 2020 +0000

  tipc: block BH before using dst_cache

  
Discussions (2)
Title Replies (including bot) Last reply
BUG: unable to handle kernel paging request in free_block (5) 0 (3) 2020/08/14 22:59
Reminder: 14 open syzbot bugs in "net/tipc" subsystem 1 (1) 2019/07/24 01:46
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 BUG: unable to handle kernel paging request in free_block 1 1548d 1548d 0/1 auto-closed as invalid on 2020/11/18 03:09
upstream BUG: unable to handle kernel paging request in free_block (4) kernel 2 2071d 2101d 0/28 closed as dup on 2019/01/14 17:27
upstream BUG: unable to handle kernel paging request in free_block (3) fs 11 2363d 2392d 0/28 closed as invalid on 2018/09/05 11:23
upstream BUG: unable to handle kernel paging request in free_block (2) mm 1 2400d 2400d 0/28 closed as invalid on 2018/03/21 12:59
Last patch testing requests (1)
Created Duration User Patch Repo Result
2022/09/07 14:27 15m retest repro net-old OK log
Fix bisection attempts (8)
Created Duration User Patch Repo Result
2020/08/14 18:49 4h08m bisect fix net-old OK (1) job log
2020/05/21 07:55 25m bisect fix net-old OK (0) job log log
2020/04/21 07:23 24m bisect fix net-old OK (0) job log log
2020/03/22 06:36 25m bisect fix net-old OK (0) job log log
2020/01/27 23:32 22m bisect fix net-old OK (0) job log log
2019/12/18 18:43 22m bisect fix net-old OK (0) job log log
2019/11/09 16:20 26m bisect fix net-old OK (0) job log log
2019/08/19 08:04 25m bisect fix net-old OK (0) job log log

Sample crash report:
BUG: unable to handle kernel paging request at 0000000100000000
#PF error: [WRITE]
PGD 94a7e067 P4D 94a7e067 PUD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7806 Comm: kworker/1:3 Not tainted 5.1.0-rc4+ #171
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events cache_reap
RIP: 0010:slab_put_obj mm/slab.c:2622 [inline]
RIP: 0010:free_block+0x149/0x250 mm/slab.c:3420
Code: b6 4c 24 1c 48 c1 ee 20 29 f0 d3 e8 41 0f b6 4c 24 1d 01 f0 49 8b 75 20 d3 e8 8d 4f ff 48 85 f6 41 89 4d 30 0f 84 f0 00 00 00 <88> 04 0e 41 8b 45 30 85 c0 0f 84 fa fe ff ff 49 8b 76 40 4c 89 ff
RSP: 0018:ffff888098c17c00 EFLAGS: 00010002
RAX: 0000000000000004 RBX: ffffe8ffffd62810 RCX: 00000000fffffffe
RDX: ffff8880a0d4d4e0 RSI: 0000000000000002 RDI: 00000000ffffffff
RBP: ffff888098c17c50 R08: ffff8880a830e300 R09: ffffed1013182f80
R10: ffffed1013182f7f R11: 0000000000000003 R12: ffff88821670d680
R13: ffffea0002835340 R14: ffff88809af7b000 R15: ffffea0002835348
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000094a56000 CR4: 00000000001406e0
Call Trace:
 drain_array_locked+0x36/0x90 mm/slab.c:2203
 drain_array+0x8c/0xb0 mm/slab.c:4028
 cache_reap+0xf4/0x280 mm/slab.c:4069
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x357/0x430 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: 0000000100000000
---[ end trace b44d468fe865ba2d ]---
RIP: 0010:slab_put_obj mm/slab.c:2622 [inline]
RIP: 0010:free_block+0x149/0x250 mm/slab.c:3420
Code: b6 4c 24 1c 48 c1 ee 20 29 f0 d3 e8 41 0f b6 4c 24 1d 01 f0 49 8b 75 20 d3 e8 8d 4f ff 48 85 f6 41 89 4d 30 0f 84 f0 00 00 00 <88> 04 0e 41 8b 45 30 85 c0 0f 84 fa fe ff ff 49 8b 76 40 4c 89 ff
RSP: 0018:ffff888098c17c00 EFLAGS: 00010002
RAX: 0000000000000004 RBX: ffffe8ffffd62810 RCX: 00000000fffffffe
RDX: ffff8880a0d4d4e0 RSI: 0000000000000002 RDI: 00000000ffffffff
RBP: ffff888098c17c50 R08: ffff8880a830e300 R09: ffffed1013182f80
R10: ffffed1013182f7f R11: 0000000000000003 R12: ffff88821670d680
R13: ffffea0002835340 R14: ffff88809af7b000 R15: ffffea0002835348
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000094a56000 CR4: 00000000001406e0

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/04/18 05:07 net-old e6986423d283 b0e8efcb .config console log report syz ci-upstream-net-this-kasan-gce
2019/03/06 22:48 upstream afe6fe7036c6 18215b8d .config console log report ci-upstream-kasan-gce
2019/04/11 17:22 net-old 988dc4a9a3b6 13030ef8 .config console log report ci-upstream-net-this-kasan-gce
* Struck through repros no longer work on HEAD.