syzbot


BUG: unable to handle kernel paging request in dquot_add_space (2)

Status: upstream: reported C repro on 2022/08/07 13:53
Reported-by: syzbot+0d3866fe3a3c815a1398@syzkaller.appspotmail.com
First crash: 656d, last: 620d
Fix bisection: failed (error log, bisect log)
  
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in dquot_add_space fs 1 583d 582d 0/26 auto-obsoleted due to no activity on 2023/02/16 21:02
linux-4.14 BUG: unable to handle kernel paging request in dquot_add_space C done 1 1272d 1332d 1/1 fixed on 2020/12/30 01:29
android-54 BUG: unable to handle kernel paging request in dquot_add_space C 1 1339d 1339d 0/2 auto-obsoleted due to no activity on 2023/04/16 14:55
linux-4.19 BUG: unable to handle kernel paging request in dquot_add_space C done 1 1259d 1319d 1/1 fixed on 2021/01/12 18:45

Sample crash report:
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
Quota error (device loop0): qtree_write_dquot: Error -1079867134 occurred while creating quota
BUG: unable to handle kernel paging request at fffffbfff7f45140
PGD 23fff1067 P4D 23fff1067 PUD 23fff0067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8076 Comm: syz-executor123 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:dquot_add_space+0x45/0x10e0 fs/quota/dquot.c:1307
Code: 4c 24 3c 4c 89 44 24 28 e8 f8 a8 a3 ff 48 8d 83 00 01 00 00 48 89 c2 48 89 44 24 30 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 43 0d 00 00 4c 8d b3 c0 00 00 00 4c 8b ab 00 01
RSP: 0018:ffff8880957870b0 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffffffffbfa28902 RCX: 0000000000000001
RDX: 1ffffffff7f45140 RSI: ffffffff81bedc78 RDI: ffffffffbfa28902
RBP: ffff8880957871d8 R08: ffff8880957871d8 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888095821d18 R14: 0000000000000000 R15: ffffffffbfa28902
FS:  0000555555beb300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff7f45140 CR3: 00000000a8d6b000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __dquot_alloc_space+0x4f5/0x860 fs/quota/dquot.c:1672
 dquot_alloc_space_nodirty include/linux/quotaops.h:298 [inline]
 dquot_alloc_space include/linux/quotaops.h:311 [inline]
 dquot_alloc_block include/linux/quotaops.h:335 [inline]
 ext4_mb_new_blocks+0x58c/0x4370 fs/ext4/mballoc.c:4534
 ext4_new_meta_blocks+0x1d9/0x320 fs/ext4/balloc.c:665
 ext4_xattr_block_set+0x12a2/0x2eb0 fs/ext4/xattr.c:2078
 ext4_xattr_set_handle+0xa1f/0x1030 fs/ext4/xattr.c:2415
 __ext4_set_acl+0x338/0x570 fs/ext4/acl.c:214
 ext4_set_acl+0x27d/0x4a0 fs/ext4/acl.c:254
 set_posix_acl+0x220/0x2d0 fs/posix_acl.c:874
 posix_acl_xattr_set+0x90/0x140 fs/posix_acl.c:892
 __vfs_setxattr+0x10e/0x170 fs/xattr.c:149
 __vfs_setxattr_noperm+0x11a/0x420 fs/xattr.c:180
 __vfs_setxattr_locked+0x176/0x250 fs/xattr.c:238
 vfs_setxattr+0xe5/0x270 fs/xattr.c:255
 setxattr+0x23d/0x330 fs/xattr.c:520
 path_setxattr+0x170/0x190 fs/xattr.c:539
 __do_sys_setxattr fs/xattr.c:554 [inline]
 __se_sys_setxattr fs/xattr.c:550 [inline]
 __x64_sys_setxattr+0xc0/0x160 fs/xattr.c:550
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fd1d1027559
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007fff24701508 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fd1d1027559
RDX: 0000000020000300 RSI: 0000000020000140 RDI: 0000000020000100
RBP: 00007fd1d0fe6df0 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000074 R11: 0000000000000246 R12: 00007fd1d0fe6e80
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: fffffbfff7f45140
---[ end trace 47ea04417080c53f ]---
RIP: 0010:dquot_add_space+0x45/0x10e0 fs/quota/dquot.c:1307
Code: 4c 24 3c 4c 89 44 24 28 e8 f8 a8 a3 ff 48 8d 83 00 01 00 00 48 89 c2 48 89 44 24 30 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 43 0d 00 00 4c 8d b3 c0 00 00 00 4c 8b ab 00 01
RSP: 0018:ffff8880957870b0 EFLAGS: 00010a02
RAX: dffffc0000000000 RBX: ffffffffbfa28902 RCX: 0000000000000001
RDX: 1ffffffff7f45140 RSI: ffffffff81bedc78 RDI: ffffffffbfa28902
RBP: ffff8880957871d8 R08: ffff8880957871d8 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001
R13: ffff888095821d18 R14: 0000000000000000 R15: ffffffffbfa28902
FS:  0000555555beb300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff7f45140 CR3: 00000000a8d6b000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4c 24 3c             	rex.WR and $0x3c,%al
   3:	4c 89 44 24 28       	mov    %r8,0x28(%rsp)
   8:	e8 f8 a8 a3 ff       	callq  0xffa3a905
   d:	48 8d 83 00 01 00 00 	lea    0x100(%rbx),%rax
  14:	48 89 c2             	mov    %rax,%rdx
  17:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 43 0d 00 00    	jne    0xd77
  34:	4c 8d b3 c0 00 00 00 	lea    0xc0(%rbx),%r14
  3b:	4c                   	rex.WR
  3c:	8b                   	.byte 0x8b
  3d:	ab                   	stos   %eax,%es:(%rdi)
  3e:	00 01                	add    %al,(%rcx)

Crashes (11):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/08/07 14:29 linux-4.19.y 3f8a27f9e27b 88e3a122 .config console log report syz C ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/09/12 08:53 linux-4.19.y 3f8a27f9e27b 356d8217 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/09/11 02:28 linux-4.19.y 3f8a27f9e27b 356d8217 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/08/22 18:13 linux-4.19.y 3f8a27f9e27b 26a13b38 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/08/21 03:00 linux-4.19.y 3f8a27f9e27b 26a13b38 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/08/20 15:29 linux-4.19.y 3f8a27f9e27b 26a13b38 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/08/19 09:50 linux-4.19.y 3f8a27f9e27b 26a13b38 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/08/19 01:54 linux-4.19.y 3f8a27f9e27b 26a13b38 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/08/17 00:48 linux-4.19.y 3f8a27f9e27b 9e4b39c2 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/08/07 20:33 linux-4.19.y 3f8a27f9e27b 88e3a122 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
2022/08/07 13:52 linux-4.19.y 3f8a27f9e27b 88e3a122 .config console log report info ci2-linux-4-19 BUG: unable to handle kernel paging request in dquot_add_space
* Struck through repros no longer work on HEAD.