[syzbot] general protection fault in jfs_flush_journal
From: syzbot
Date: Sun Oct 02 2022 - 14:56:58 EST
Hello,
syzbot found the following issue on:
HEAD commit: b357fd1c2afc Merge tag 'usb-6.0-final' of git://git.kernel..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=12bffb70880000
kernel config: https://syzkaller.appspot.com/x/.config?x=ba0d23aa7e1ffaf5
dashboard link: https://syzkaller.appspot.com/bug?extid=194bfe3476f96782c0b6
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1047ec68880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10409722880000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c3f38889d41b/disk-b357fd1c.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8b4dacf1eadb/vmlinux-b357fd1c.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+194bfe3476f96782c0b6@xxxxxxxxxxxxxxxxxxxxxxxxx
ERROR: (device loop4): diRead: i_ino != di_number
general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 PID: 3626 Comm: syz-executor291 Not tainted 6.0.0-rc7-syzkaller-00239-gb357fd1c2afc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x7e7/0xec0 fs/jfs/jfs_logmgr.c:1573
Code: b1 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 17 d5 d9 fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 fa d4 d9 fe 48 8b 3b e8 f2 f3 b1
RSP: 0018:ffffc900039af9e0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 29e26a118b04f100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900039afb10 R08: ffffffff81b29a43 R09: ffffc900039af930
R10: fffff52000735f29 R11: 1ffff92000735f26 R12: 1ffff92000735f48
R13: dffffc0000000000 R14: ffff8880246d3800 R15: ffff88801e196038
FS: 0000555557105300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd2b406000 CR3: 0000000073f69000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
jfs_umount+0xf3/0x370 fs/jfs/jfs_umount.c:58
jfs_fill_super+0x911/0xc50 fs/jfs/super.c:600
mount_bdev+0x26c/0x3a0 fs/super.c:1400
legacy_get_tree+0xea/0x180 fs/fs_context.c:610
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x289/0xad0 fs/namespace.c:3040
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8daf79e56a
Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007ffd2b4051a8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8daf79e56a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffd2b4051c0
RBP: 00007ffd2b4051c0 R08: 00007ffd2b405200 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000004
R13: 00007ffd2b405200 R14: 0000000000000357 R15: 0000000020005228
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:jfs_flush_journal+0x7e7/0xec0 fs/jfs/jfs_logmgr.c:1573
Code: b1 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 17 d5 d9 fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 fa d4 d9 fe 48 8b 3b e8 f2 f3 b1
RSP: 0018:ffffc900039af9e0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 29e26a118b04f100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900039afb10 R08: ffffffff81b29a43 R09: ffffc900039af930
R10: fffff52000735f29 R11: 1ffff92000735f26 R12: 1ffff92000735f48
R13: dffffc0000000000 R14: ffff8880246d3800 R15: ffff88801e196038
FS: 0000555557105300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8daf7afa10 CR3: 0000000073f69000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: b1 fe mov $0xfe,%cl
2: 49 8d 5f f0 lea -0x10(%r15),%rbx
6: 48 89 d8 mov %rbx,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
12: 74 08 je 0x1c
14: 48 89 df mov %rbx,%rdi
17: e8 17 d5 d9 fe callq 0xfed9d533
1c: 48 8b 1b mov (%rbx),%rbx
1f: 48 83 c3 30 add $0x30,%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 fa d4 d9 fe callq 0xfed9d533
39: 48 8b 3b mov (%rbx),%rdi
3c: e8 .byte 0xe8
3d: f2 repnz
3e: f3 repz
3f: b1 .byte 0xb1
---
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