syzbot


BUG: unable to handle kernel paging request in dquot_add_inodes

Status: upstream: reported C repro on 2020/12/20 10:33
Reported-by: syzbot+ff00c36846bd9999df0b@syzkaller.appspotmail.com
First crash: 773d, last: 29d

Fix bisection: fixed by (bisect log) [no-op commit]:
commit e92c43000273edd7bb49e66712d557f6dd5cba2a
Author: Yu Kuai <yukuai3@huawei.com>
Date: Fri Oct 9 12:38:02 2020 +0000

  media: mtk-vcodec: add missing put_device() call in mtk_vcodec_release_dec_pm()

similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in dquot_add_inodes 1 103d 103d 0/24 upstream: reported on 2022/10/21 12:21
linux-4.14 BUG: unable to handle kernel paging request in dquot_add_inodes C done 2 769d 791d 1/1 fixed on 2021/01/23 16:49
android-54 BUG: unable to handle kernel paging request in dquot_add_inodes C 3 443d 783d 0/2 upstream: reported C repro on 2020/12/10 01:44

Sample crash report:
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
Quota error (device loop0): free_dqentry: Quota structure has offset to other block (0) than it should (5)
Quota error (device loop0): qtree_write_dquot: Error -641722073 occurred while creating quota
BUG: unable to handle kernel paging request at fffffbfffb38033f
PGD 23fff1067 P4D 23fff1067 PUD 23fff0067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8116 Comm: syz-executor395 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__lock_acquire+0x1eb/0x3ff0 kernel/locking/lockdep.c:3295
Code: 2b 29 00 00 48 81 c4 98 01 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 b3 2a 00 00 49 81 3e 20 f2 66 8c 0f 84 65 ff ff
RSP: 0018:ffff8880a333f5a0 EFLAGS: 00010807
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 1ffffffffb38033f RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b14aa540 R14: ffffffffd9c019ff R15: 0000000000000001
FS:  0000555557527300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfffb38033f CR3: 00000000a5b9c000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 dquot_add_inodes+0x34/0x9a0 fs/quota/dquot.c:1263
 __dquot_transfer+0xf3a/0x18a0 fs/quota/dquot.c:1994
 dquot_transfer+0x2ee/0x4c0 fs/quota/dquot.c:2100
 ext4_setattr+0x58a/0x2560 fs/ext4/inode.c:5604
 notify_change+0x70b/0xfc0 fs/attr.c:334
 chown_common+0x4a9/0x550 fs/open.c:651
 do_fchownat+0x126/0x1e0 fs/open.c:681
 __do_sys_chown fs/open.c:701 [inline]
 __se_sys_chown fs/open.c:699 [inline]
 __x64_sys_chown+0x77/0xb0 fs/open.c:699
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f47a18a47c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffa82f9288 EFLAGS: 00000246 ORIG_RAX: 000000000000005c
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f47a18a47c9
RDX: 000000000000ee00 RSI: 000000000000ee01 RDI: 0000000020000080
RBP: 00007f47a1864060 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f47a18640f0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: fffffbfffb38033f
---[ end trace 32398071608caecd ]---
RIP: 0010:__lock_acquire+0x1eb/0x3ff0 kernel/locking/lockdep.c:3295
Code: 2b 29 00 00 48 81 c4 98 01 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 b3 2a 00 00 49 81 3e 20 f2 66 8c 0f 84 65 ff ff
RSP: 0018:ffff8880a333f5a0 EFLAGS: 00010807
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 1ffffffffb38033f RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b14aa540 R14: ffffffffd9c019ff R15: 0000000000000001
FS:  0000555557527300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfffb38033f CR3: 00000000a5b9c000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	2b 29                	sub    (%rcx),%ebp
   2:	00 00                	add    %al,(%rax)
   4:	48 81 c4 98 01 00 00 	add    $0x198,%rsp
   b:	44 89 f8             	mov    %r15d,%eax
   e:	5b                   	pop    %rbx
   f:	5d                   	pop    %rbp
  10:	41 5c                	pop    %r12
  12:	41 5d                	pop    %r13
  14:	41 5e                	pop    %r14
  16:	41 5f                	pop    %r15
  18:	c3                   	retq
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	4c 89 f2             	mov    %r14,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 b3 2a 00 00    	jne    0x2ae7
  34:	49 81 3e 20 f2 66 8c 	cmpq   $0xffffffff8c66f220,(%r14)
  3b:	0f                   	.byte 0xf
  3c:	84 65 ff             	test   %ah,-0x1(%rbp)
  3f:	ff                   	.byte 0xff

Crashes (9):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci2-linux-4-19 2022/12/14 00:58 linux-4.19.y 3f8a27f9e27b f6511626 .config console log report syz C [disk image] [vmlinux] [mounted in repro] BUG: unable to handle kernel paging request in dquot_add_inodes
ci2-linux-4-19 2022/12/10 14:16 linux-4.19.y 3f8a27f9e27b 67be1ae7 .config console log report syz C [disk image] [vmlinux] [mounted in repro] BUG: unable to handle kernel paging request in dquot_add_inodes
ci2-linux-4-19 2022/08/10 16:01 linux-4.19.y 3f8a27f9e27b aaa9eaa0 .config console log report syz C BUG: unable to handle kernel paging request in dquot_add_inodes
ci2-linux-4-19 2020/12/22 07:02 linux-4.19.y 13d2ce42de8c 04201c06 .config console log report syz C
ci2-linux-4-19 2020/12/20 10:57 linux-4.19.y 13d2ce42de8c 04201c06 .config console log report syz C
ci2-linux-4-19 2023/01/03 01:39 linux-4.19.y 3f8a27f9e27b ab32d508 .config console log report info [disk image] [vmlinux] BUG: unable to handle kernel paging request in dquot_add_inodes
ci2-linux-4-19 2022/12/10 14:06 linux-4.19.y 3f8a27f9e27b 67be1ae7 .config console log report info [disk image] [vmlinux] BUG: unable to handle kernel paging request in dquot_add_inodes
ci2-linux-4-19 2022/08/10 15:14 linux-4.19.y 3f8a27f9e27b aaa9eaa0 .config console log report info BUG: unable to handle kernel paging request in dquot_add_inodes
ci2-linux-4-19 2020/12/20 10:32 linux-4.19.y 13d2ce42de8c 04201c06 .config console log report info
* Struck through repros no longer work on HEAD.