[moderation] [fs?] kernel BUG in evict
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syzbot
Aug 12, 2023, 3:17:01 PM8/12/23
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 02aee814d37c Merge tag 'gfs2-v6.4-fixes' of git://git.kern..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=167ecfb3a80000
kernel config: https://syzkaller.appspot.com/x/.config?x=3e670757e16affb
dashboard link: https://syzkaller.appspot.com/bug?extid=d046c45a08eb35df6964
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: i386
CC: [bra...@kernel.org linux-...@vger.kernel.org linux-...@vger.kernel.org vi...@zeniv.linux.org.uk]
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-02aee814.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/677c84945e4e/vmlinux-02aee814.xz
kernel image: https://storage.googleapis.com/syzbot-assets/52f8a29e9fe7/bzImage-02aee814.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d046c4...@syzkaller.appspotmail.com
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
page has been migrated, last migrate reason: compaction
------------[ cut here ]------------
kernel BUG at mm/truncate.c:423!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 2 PID: 5181 Comm: syz-executor.3 Not tainted 6.5.0-rc5-syzkaller-00050-g02aee814d37c #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:truncate_inode_pages_range+0xd9d/0xfb0 mm/truncate.c:423
Code: 4c 89 f7 e8 25 30 ce ff 4c 39 f3 0f 82 37 f8 ff ff e9 9f f8 ff ff e8 02 35 ce ff 48 c7 c6 c0 39 77 8a 4c 89 e7 e8 73 da 0a 00 <0f> 0b e8 ec 34 ce ff 48 c7 c6 60 3a 77 8a 48 89 ef e8 5d da 0a 00
RSP: 0018:ffffc90003f079f0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801f200000 RSI: ffffffff81b7d3ad RDI: ffffffff8ac81120
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1d57382
R10: ffffffff8eab9c17 R11: 0000000000000000 R12: ffffea0000a76000
R13: ffffc90003f07b28 R14: ffffc90003f07b30 R15: 0000000000000694
FS: 0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:000000005842e400
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000c001cca200 CR3: 0000000074639000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
evict+0x533/0x6b0 fs/inode.c:667
dispose_list+0x117/0x1e0 fs/inode.c:698
evict_inodes+0x34f/0x450 fs/inode.c:748
generic_shutdown_super+0xaf/0x480 fs/super.c:478
kill_block_super+0x64/0xb0 fs/super.c:1417
deactivate_locked_super+0x9a/0x170 fs/super.c:330
deactivate_super+0xde/0x100 fs/super.c:361
cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254
task_work_run+0x14d/0x240 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
__do_fast_syscall_32+0x6d/0xe0 arch/x86/entry/common.c:181
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f81579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000fff34108 EFLAGS: 00000292 ORIG_RAX: 0000000000000034
RAX: 0000000000000000 RBX: 00000000fff341b0 RCX: 000000000000000a
RDX: 00000000f7353ff4 RSI: 00000000f72a53bd RDI: 00000000fff35254
RBP: 00000000fff341b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:truncate_inode_pages_range+0xd9d/0xfb0 mm/truncate.c:423
Code: 4c 89 f7 e8 25 30 ce ff 4c 39 f3 0f 82 37 f8 ff ff e9 9f f8 ff ff e8 02 35 ce ff 48 c7 c6 c0 39 77 8a 4c 89 e7 e8 73 da 0a 00 <0f> 0b e8 ec 34 ce ff 48 c7 c6 60 3a 77 8a 48 89 ef e8 5d da 0a 00
RSP: 0018:ffffc90003f079f0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801f200000 RSI: ffffffff81b7d3ad RDI: ffffffff8ac81120
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1d57382
R10: ffffffff8eab9c17 R11: 0000000000000000 R12: ffffea0000a76000
R13: ffffc90003f07b28 R14: ffffc90003f07b30 R15: 0000000000000694
FS: 0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:000000005842e400
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000c001cca200 CR3: 0000000074639000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 10 06 adc %al,(%rsi)
2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi
6: 10 07 adc %al,(%rdi)
8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi
c: 10 08 adc %cl,(%rax)
e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi
1e: 00 51 52 add %dl,0x52(%rcx)
21: 55 push %rbp
22: 89 e5 mov %esp,%ebp
24: 0f 34 sysenter
26: cd 80 int $0x80
* 28: 5d pop %rbp <-- trapping instruction
29: 5a pop %rdx
2a: 59 pop %rcx
2b: c3 ret
2c: 90 nop
2d: 90 nop
2e: 90 nop
2f: 90 nop
30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to change bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 02aee814d37c Merge tag 'gfs2-v6.4-fixes' of git://git.kern..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=167ecfb3a80000
kernel config: https://syzkaller.appspot.com/x/.config?x=3e670757e16affb
dashboard link: https://syzkaller.appspot.com/bug?extid=d046c45a08eb35df6964
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: i386
CC: [bra...@kernel.org linux-...@vger.kernel.org linux-...@vger.kernel.org vi...@zeniv.linux.org.uk]
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-02aee814.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/677c84945e4e/vmlinux-02aee814.xz
kernel image: https://storage.googleapis.com/syzbot-assets/52f8a29e9fe7/bzImage-02aee814.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d046c4...@syzkaller.appspotmail.com
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
page has been migrated, last migrate reason: compaction
------------[ cut here ]------------
kernel BUG at mm/truncate.c:423!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 2 PID: 5181 Comm: syz-executor.3 Not tainted 6.5.0-rc5-syzkaller-00050-g02aee814d37c #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:truncate_inode_pages_range+0xd9d/0xfb0 mm/truncate.c:423
Code: 4c 89 f7 e8 25 30 ce ff 4c 39 f3 0f 82 37 f8 ff ff e9 9f f8 ff ff e8 02 35 ce ff 48 c7 c6 c0 39 77 8a 4c 89 e7 e8 73 da 0a 00 <0f> 0b e8 ec 34 ce ff 48 c7 c6 60 3a 77 8a 48 89 ef e8 5d da 0a 00
RSP: 0018:ffffc90003f079f0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801f200000 RSI: ffffffff81b7d3ad RDI: ffffffff8ac81120
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1d57382
R10: ffffffff8eab9c17 R11: 0000000000000000 R12: ffffea0000a76000
R13: ffffc90003f07b28 R14: ffffc90003f07b30 R15: 0000000000000694
FS: 0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:000000005842e400
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000c001cca200 CR3: 0000000074639000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
evict+0x533/0x6b0 fs/inode.c:667
dispose_list+0x117/0x1e0 fs/inode.c:698
evict_inodes+0x34f/0x450 fs/inode.c:748
generic_shutdown_super+0xaf/0x480 fs/super.c:478
kill_block_super+0x64/0xb0 fs/super.c:1417
deactivate_locked_super+0x9a/0x170 fs/super.c:330
deactivate_super+0xde/0x100 fs/super.c:361
cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254
task_work_run+0x14d/0x240 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
__do_fast_syscall_32+0x6d/0xe0 arch/x86/entry/common.c:181
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f81579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000fff34108 EFLAGS: 00000292 ORIG_RAX: 0000000000000034
RAX: 0000000000000000 RBX: 00000000fff341b0 RCX: 000000000000000a
RDX: 00000000f7353ff4 RSI: 00000000f72a53bd RDI: 00000000fff35254
RBP: 00000000fff341b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:truncate_inode_pages_range+0xd9d/0xfb0 mm/truncate.c:423
Code: 4c 89 f7 e8 25 30 ce ff 4c 39 f3 0f 82 37 f8 ff ff e9 9f f8 ff ff e8 02 35 ce ff 48 c7 c6 c0 39 77 8a 4c 89 e7 e8 73 da 0a 00 <0f> 0b e8 ec 34 ce ff 48 c7 c6 60 3a 77 8a 48 89 ef e8 5d da 0a 00
RSP: 0018:ffffc90003f079f0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801f200000 RSI: ffffffff81b7d3ad RDI: ffffffff8ac81120
RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1d57382
R10: ffffffff8eab9c17 R11: 0000000000000000 R12: ffffea0000a76000
R13: ffffc90003f07b28 R14: ffffc90003f07b30 R15: 0000000000000694
FS: 0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:000000005842e400
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000c001cca200 CR3: 0000000074639000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 10 06 adc %al,(%rsi)
2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi
6: 10 07 adc %al,(%rdi)
8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi
c: 10 08 adc %cl,(%rax)
e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi
1e: 00 51 52 add %dl,0x52(%rcx)
21: 55 push %rbp
22: 89 e5 mov %esp,%ebp
24: 0f 34 sysenter
26: cd 80 int $0x80
* 28: 5d pop %rbp <-- trapping instruction
29: 5a pop %rdx
2a: 59 pop %rcx
2b: c3 ret
2c: 90 nop
2d: 90 nop
2e: 90 nop
2f: 90 nop
30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to change bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot
Nov 6, 2023, 2:12:24 PM11/6/23
to syzkaller-upst...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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