syzbot


general protection fault in jfs_error

Status: moderation: reported on 2024/05/10 09:30
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+d8f3a37a0d1065a1dce7@syzkaller.appspotmail.com
First crash: 43d, last: 33d

Sample crash report:
general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057]
CPU: 1 PID: 17026 Comm: syz-executor.1 Not tainted 6.9.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:sb_rdonly include/linux/fs.h:2234 [inline]
RIP: 0010:jfs_handle_error fs/jfs/super.c:66 [inline]
RIP: 0010:jfs_error+0x159/0x2e0 fs/jfs/super.c:98
Code: 08 48 c7 c7 00 e5 01 8c 48 89 74 24 08 4c 89 f9 e8 6c 6c 56 08 4d 8d 65 50 4d 89 e7 49 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 07 00 74 08 4c 89 e7 e8 78 56 d9 fe 49 8b 1c 24 48 89 de
RSP: 0018:ffffc9000d0676c0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 90587d9c49768c00
RDX: ffffc9000bbe5000 RSI: 000000000003d922 RDI: 000000000003d923
RBP: ffffc9000d0677d0 R08: ffffffff8176adac R09: 1ffff110172a519a
R10: dffffc0000000000 R11: ffffed10172a519b R12: 0000000000000050
R13: 0000000000000000 R14: 1ffff92001a0cee0 R15: 000000000000000a
FS:  00007fbed41776c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4d3780a000 CR3: 0000000025590000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_rename+0xfee/0x1bb0 fs/jfs/namei.c:1243
 vfs_rename+0xbdb/0xf00 fs/namei.c:4880
 do_renameat2+0xd94/0x13f0 fs/namei.c:5037
 __do_sys_renameat2 fs/namei.c:5071 [inline]
 __se_sys_renameat2 fs/namei.c:5068 [inline]
 __x64_sys_renameat2+0xd2/0xf0 fs/namei.c:5068
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbed347dca9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbed41770c8 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007fbed35abf80 RCX: 00007fbed347dca9
RDX: ffffffffffffff9c RSI: 0000000020000780 RDI: ffffffffffffff9c
RBP: 00007fbed34c947e R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200007c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fbed35abf80 R15: 00007fff391ce8e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:sb_rdonly include/linux/fs.h:2234 [inline]
RIP: 0010:jfs_handle_error fs/jfs/super.c:66 [inline]
RIP: 0010:jfs_error+0x159/0x2e0 fs/jfs/super.c:98
Code: 08 48 c7 c7 00 e5 01 8c 48 89 74 24 08 4c 89 f9 e8 6c 6c 56 08 4d 8d 65 50 4d 89 e7 49 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 07 00 74 08 4c 89 e7 e8 78 56 d9 fe 49 8b 1c 24 48 89 de
RSP: 0018:ffffc9000d0676c0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 90587d9c49768c00
RDX: ffffc9000bbe5000 RSI: 000000000003d922 RDI: 000000000003d923
RBP: ffffc9000d0677d0 R08: ffffffff8176adac R09: 1ffff110172a519a
R10: dffffc0000000000 R11: ffffed10172a519b R12: 0000000000000050
R13: 0000000000000000 R14: 1ffff92001a0cee0 R15: 000000000000000a
FS:  00007fbed41776c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec5475268 CR3: 0000000025590000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	08 48 c7             	or     %cl,-0x39(%rax)
   3:	c7 00 e5 01 8c 48    	movl   $0x488c01e5,(%rax)
   9:	89 74 24 08          	mov    %esi,0x8(%rsp)
   d:	4c 89 f9             	mov    %r15,%rcx
  10:	e8 6c 6c 56 08       	call   0x8566c81
  15:	4d 8d 65 50          	lea    0x50(%r13),%r12
  19:	4d 89 e7             	mov    %r12,%r15
  1c:	49 c1 ef 03          	shr    $0x3,%r15
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	41 80 3c 07 00       	cmpb   $0x0,(%r15,%rax,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 e7             	mov    %r12,%rdi
  34:	e8 78 56 d9 fe       	call   0xfed956b1
  39:	49 8b 1c 24          	mov    (%r12),%rbx
  3d:	48 89 de             	mov    %rbx,%rsi

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/06 09:28 upstream dd5a440a31fa 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in jfs_error
2024/05/15 15:21 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fda5695d692c fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: unable to handle kernel paging request in jfs_error
* Struck through repros no longer work on HEAD.