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BUG: unable to handle kernel paging request in list_lru_add

Status: fixed on 2024/08/28 10:02
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+2403e3909382fbdeaf6c@syzkaller.appspotmail.com
Fix commit: aacd897d4d75 Revert "bcachefs: Mark bch_inode_info as SLAB_ACCOUNT"
First crash: 474d, last: 151d
Cause bisection: introduced by (bisect log) :
commit 86d81ec5f5f05846c7c6e48ffb964b24cba2e669
Author: Youling Tang <tangyouling@kylinos.cn>
Date: Wed Jul 3 07:09:55 2024 +0000

  bcachefs: Mark bch_inode_info as SLAB_ACCOUNT

Crash: BUG: unable to handle kernel NULL pointer dereference in list_lru_add (log)
Repro: C syz .config
  
Fix bisection: fixed by (bisect log) :
commit aacd897d4d75adaae3becc2b00d8cdc9a56928d1
Author: Kent Overstreet <kent.overstreet@linux.dev>
Date: Fri Jul 12 00:01:31 2024 +0000

  Revert "bcachefs: Mark bch_inode_info as SLAB_ACCOUNT"

  
▶ ▼ Discussions (6)
Title Replies (including bot) Last reply
[syzbot] [mm?] BUG: unable to handle kernel paging request in list_lru_add 3 (10) 2024/08/22 01:54
[syzbot] Monthly mm report (May 2024) 0 (1) 2024/05/31 06:48
[syzbot] Monthly mm report (Mar 2024) 0 (1) 2024/03/19 21:40
[syzbot] Monthly mm report (Feb 2024) 0 (1) 2024/02/17 20:23
[syzbot] Monthly mm report (Jan 2024) 0 (1) 2024/01/17 09:21
[syzbot] Monthly mm report (Sep 2023) 0 (1) 2023/09/11 10:07
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in list_lru_add mm C done 1125 705d 993d 22/28 fixed on 2023/02/24 13:51
upstream BUG: corrupted list in list_lru_add bcachefs mm syz 1 22d 18d 0/28 upstream: reported syz repro on 2024/11/22 12:30
android-5-10 BUG: Dentry still in use in unmount C done 1184 1021d 1034d 2/2 fixed on 2022/02/25 03:20
▶ ▼ Last patch testing requests (9)
Created Duration User Patch Repo Result
2024/07/27 04:07 23m retest repro upstream OK log
2024/07/27 04:07 20m retest repro upstream OK log
2024/07/13 09:05 20m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 43db1e03c086 OK log
2024/07/13 01:49 25m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 43db1e03c086 report log
2024/04/05 11:14 26m retest repro upstream OK log
2024/04/05 09:41 22m retest repro upstream OK log
2024/04/05 09:41 23m retest repro upstream OK log
2024/04/05 09:41 23m retest repro upstream OK log
2024/04/05 09:41 23m retest repro upstream OK log

Sample crash report:
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 5082 Comm: syz-executor346 Not tainted 6.10.0-rc7-syzkaller-00141-g43db1e03c086 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:list_add_tail include/linux/list.h:183 [inline]
RIP: 0010:list_lru_add+0x1b1/0x390 mm/list_lru.c:97
Code: 89 ef e8 e2 06 1c 00 48 8b 45 00 48 8b 4c 24 30 48 8d 6c 08 40 4c 8d 6d 08 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ef e8 b0 06 1c 00 4c 8b 7d 08 4c 89 f7
RSP: 0018:ffffc9000346fa78 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 1ffff1100f661037 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff8bcaccc0 RDI: ffffffff8c1f54c0
RBP: 0000000000000000 R08: ffffffff8fac686f R09: 1ffffffff1f58d0d
R10: dffffc0000000000 R11: fffffbfff1f58d0e R12: 0000000000000001
R13: 0000000000000008 R14: ffff88807b3081b8 R15: 0000000000000000
FS:  000055556b19b380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556b1a46f8 CR3: 000000007911c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __inode_add_lru fs/inode.c:467 [inline]
 iput_final fs/inode.c:1718 [inline]
 iput+0x87a/0x930 fs/inode.c:1767
 __dentry_kill+0x20d/0x630 fs/dcache.c:607
 dput+0x19f/0x2b0 fs/dcache.c:849
 shrink_dcache_for_umount+0x7d/0x130 fs/dcache.c:1559
 generic_shutdown_super+0x6a/0x2d0 fs/super.c:620
 bch2_kill_sb+0x41/0x50 fs/bcachefs/fs.c:2052
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1267
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 ptrace_notify+0x2d2/0x380 kernel/signal.c:2402
 ptrace_report_syscall include/linux/ptrace.h:415 [inline]
 ptrace_report_syscall_exit include/linux/ptrace.h:477 [inline]
 syscall_exit_work+0xc6/0x190 kernel/entry/common.c:173
 syscall_exit_to_user_mode_prepare kernel/entry/common.c:200 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline]
 syscall_exit_to_user_mode+0x273/0x360 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3c1c83ce77
Code: 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffd0d57ec8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3c1c83ce77
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffd0d57f80
RBP: 00007fffd0d57f80 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fffd0d58ff0
R13: 000055556b19c6c0 R14: 00007fffd0d58fec R15: 431bde82d7b634db
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:list_add_tail include/linux/list.h:183 [inline]
RIP: 0010:list_lru_add+0x1b1/0x390 mm/list_lru.c:97
Code: 89 ef e8 e2 06 1c 00 48 8b 45 00 48 8b 4c 24 30 48 8d 6c 08 40 4c 8d 6d 08 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ef e8 b0 06 1c 00 4c 8b 7d 08 4c 89 f7
RSP: 0018:ffffc9000346fa78 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 1ffff1100f661037 RCX: 0000000000000000
RDX: 0000000000000003 RSI: ffffffff8bcaccc0 RDI: ffffffff8c1f54c0
RBP: 0000000000000000 R08: ffffffff8fac686f R09: 1ffffffff1f58d0d
R10: dffffc0000000000 R11: fffffbfff1f58d0e R12: 0000000000000001
R13: 0000000000000008 R14: ffff88807b3081b8 R15: 0000000000000000
FS:  000055556b19b380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556b1a46f8 CR3: 000000007911c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 ef                	mov    %ebp,%edi
   2:	e8 e2 06 1c 00       	call   0x1c06e9
   7:	48 8b 45 00          	mov    0x0(%rbp),%rax
   b:	48 8b 4c 24 30       	mov    0x30(%rsp),%rcx
  10:	48 8d 6c 08 40       	lea    0x40(%rax,%rcx,1),%rbp
  15:	4c 8d 6d 08          	lea    0x8(%rbp),%r13
  19:	4d 89 ec             	mov    %r13,%r12
  1c:	49 c1 ec 03          	shr    $0x3,%r12
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	41 80 3c 04 00       	cmpb   $0x0,(%r12,%rax,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ef             	mov    %r13,%rdi
  34:	e8 b0 06 1c 00       	call   0x1c06e9
  39:	4c 8b 7d 08          	mov    0x8(%rbp),%r15
  3d:	4c 89 f7             	mov    %r14,%rdi

Crashes (11367):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/07/12 19:49 upstream 43db1e03c086 eaeb5c15 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs general protection fault in list_lru_add
2024/07/12 17:10 upstream 43db1e03c086 eaeb5c15 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs general protection fault in list_lru_add
2024/01/14 22:34 upstream 052d534373b7 551587c1 .config console log report syz [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64 BUG: unable to handle kernel paging request in list_lru_add
2024/02/24 04:47 upstream b6d69282db55 8d446f15 .config console log report syz [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-mte BUG: unable to handle kernel NULL pointer dereference in list_lru_add
2024/01/20 13:59 upstream 9d64bf433c53 9bd8dcda .config console log report syz [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-mte BUG: unable to handle kernel NULL pointer dereference in list_lru_add
2023/12/30 12:12 upstream f016f7547aee fb427a07 .config console log report syz [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-mte BUG: unable to handle kernel NULL pointer dereference in list_lru_add
2023/12/27 15:49 upstream fbafc3e621c3 fb427a07 .config console log report syz [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-mte BUG: unable to handle kernel NULL pointer dereference in list_lru_add
2024/03/22 09:40 upstream 8e938e398669 7a239ce7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-compat BUG: unable to handle kernel paging request in list_lru_add
2024/03/14 01:41 upstream e5e038b7ae9d f919f202 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64 BUG: unable to handle kernel paging request in list_lru_add
2024/03/13 03:36 upstream 1f440397665f db5b7ff0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64 BUG: unable to handle kernel paging request in list_lru_add
2023/09/04 15:59 upstream 708283abf896 db3306a6 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64 BUG: unable to handle kernel paging request in list_lru_add
2023/08/25 06:41 upstream f8d6ff449094 49be837e .config console log report info ci-qemu2-arm64-compat BUG: unable to handle kernel paging request in list_lru_add
2024/07/13 03:32 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 03:23 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 03:14 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 03:06 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 03:00 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 02:53 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 02:47 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 02:41 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 02:32 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 02:25 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 02:18 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 02:11 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 02:04 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 01:59 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 01:53 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 01:47 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 01:40 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 01:34 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 01:27 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 01:21 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 01:13 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 01:06 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 00:59 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 00:52 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 00:44 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 00:37 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 00:30 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 00:24 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 00:17 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 00:11 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/13 00:04 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/12 23:54 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/12 23:46 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/12 23:37 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/12 23:23 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/12 23:11 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/12 22:51 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/12 22:45 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in list_lru_add
2024/07/12 22:41 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/12 22:36 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in list_lru_add
2024/07/12 22:30 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in list_lru_add
2024/07/12 22:25 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in list_lru_add
2024/07/12 22:20 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in list_lru_add
2024/07/12 17:30 upstream 43db1e03c086 eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in list_lru_add
2024/05/29 19:10 upstream 4a4be1ad3a6e c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 general protection fault in list_lru_add
2024/03/18 17:25 upstream f6cef5f8c37f baa80228 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-mte BUG: unable to handle kernel NULL pointer dereference in list_lru_add
2024/03/09 23:05 upstream 09e5c48fea17 6ee49f2e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-mte BUG: unable to handle kernel NULL pointer dereference in list_lru_add
* Struck through repros no longer work on HEAD.