[syzbot] [f2fs?] kernel BUG in f2fs_do_truncate_blocks (2)
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2:27 PM (9 hours ago) 2:27 PM
to ch...@kernel.org, jae...@kernel.org, linux-f2...@lists.sourceforge.net, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 26fd6bff2c05 Merge tag 'mtd/fixes-for-7.1-rc2' of git://gi..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1604bb48580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7f195f6be48c12ec
dashboard link: https://syzkaller.appspot.com/bug?extid=2488d8d751b27f7ce268
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-26fd6bff.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c6a6df2148f4/vmlinux-26fd6bff.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9b86e0551588/bzImage-26fd6bff.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2488d8...@syzkaller.appspotmail.com
loop0: detected capacity change from 0 to 131072
F2FS-fs (loop0): QUOTA feature is enabled, so ignore qf_name
F2FS-fs (loop0): build fault injection rate: 7
F2FS-fs (loop0): build fault injection type: 0x40004
F2FS-fs (loop0): invalid crc value
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of read_compacted_summaries fs/f2fs/segment.c:4301 [inline]
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of restore_curseg_summaries fs/f2fs/segment.c:4445 [inline]
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of build_curseg+0x105c/0x30c0 fs/f2fs/segment.c:4983
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of restore_curseg_summaries fs/f2fs/segment.c:4452 [inline]
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of build_curseg+0x18ea/0x30c0 fs/f2fs/segment.c:4983
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of build_sit_entries+0x26c/0x1f10 fs/f2fs/segment.c:5000
F2FS-fs (loop0): inject invalid blkaddr in f2fs_is_valid_blkaddr of f2fs_ra_meta_pages+0x21c/0xd60 fs/f2fs/checkpoint.c:472
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of f2fs_get_meta_folio_retry+0x27/0x80 fs/f2fs/checkpoint.c:318
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of f2fs_get_meta_folio_retry+0x27/0x80 fs/f2fs/checkpoint.c:318
------------[ cut here ]------------
kernel BUG at fs/f2fs/file.c:845!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:f2fs_do_truncate_blocks+0x1115/0x1140 fs/f2fs/file.c:845
Code: fc fc 90 0f 0b e8 8b 9d 9a fd 90 0f 0b e8 83 9d 9a fd 48 89 df 48 c7 c6 60 d1 1a 8c e8 54 f1 fc fc 90 0f 0b e8 6c 9d 9a fd 90 <0f> 0b e8 64 9d 9a fd 90 0f 0b 90 e9 93 fd ff ff e8 56 9d 9a fd 90
RSP: 0018:ffffc9000e4474c0 EFLAGS: 00010283
RAX: ffffffff842b1d34 RBX: 0000000000000003 RCX: 0000000000100000
RDX: ffffc9000f03a000 RSI: 0000000000035503 RDI: 0000000000035504
RBP: ffffc9000e447608 R08: ffff8880123b0000 R09: 0000000000000002
R10: 00000000fffffffe R11: 0000000000000002 R12: 0000000000000001
R13: 0000000000000000 R14: 1ffff92001c88ea0 R15: 00000000ffff039c
FS: 00007f7e02ee36c0(0000) GS:ffff88808c887000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff0305c4000 CR3: 0000000012d4c000 CR4: 0000000000352ef0
Call Trace:
<TASK>
f2fs_truncate_blocks+0x10a/0x300 fs/f2fs/file.c:882
f2fs_truncate+0x471/0x7c0 fs/f2fs/file.c:940
f2fs_evict_inode+0xa3f/0x1ac0 fs/f2fs/inode.c:907
evict+0x61e/0xb10 fs/inode.c:841
f2fs_fill_super+0x5f43/0x78f0 fs/f2fs/super.c:5224
get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3758 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3834
do_mount fs/namespace.c:4167 [inline]
__do_sys_mount fs/namespace.c:4383 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4360
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e01f9e04a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7e02ee2e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7e02ee2ea0 RCX: 00007f7e01f9e04a
RDX: 0000200000000080 RSI: 00002000000105c0 RDI: 00007f7e02ee2e60
RBP: 0000200000000080 R08: 00007f7e02ee2ea0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000105c0
R13: 00007f7e02ee2e60 R14: 0000000000010589 R15: 0000200000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:f2fs_do_truncate_blocks+0x1115/0x1140 fs/f2fs/file.c:845
Code: fc fc 90 0f 0b e8 8b 9d 9a fd 90 0f 0b e8 83 9d 9a fd 48 89 df 48 c7 c6 60 d1 1a 8c e8 54 f1 fc fc 90 0f 0b e8 6c 9d 9a fd 90 <0f> 0b e8 64 9d 9a fd 90 0f 0b 90 e9 93 fd ff ff e8 56 9d 9a fd 90
RSP: 0018:ffffc9000e4474c0 EFLAGS: 00010283
RAX: ffffffff842b1d34 RBX: 0000000000000003 RCX: 0000000000100000
RDX: ffffc9000f03a000 RSI: 0000000000035503 RDI: 0000000000035504
RBP: ffffc9000e447608 R08: ffff8880123b0000 R09: 0000000000000002
R10: 00000000fffffffe R11: 0000000000000002 R12: 0000000000000001
R13: 0000000000000000 R14: 1ffff92001c88ea0 R15: 00000000ffff039c
FS: 00007f7e02ee36c0(0000) GS:ffff88808c887000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e028509c38 CR3: 0000000012d4c000 CR4: 0000000000352ef0
---
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 report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, 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: 26fd6bff2c05 Merge tag 'mtd/fixes-for-7.1-rc2' of git://gi..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1604bb48580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7f195f6be48c12ec
dashboard link: https://syzkaller.appspot.com/bug?extid=2488d8d751b27f7ce268
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-26fd6bff.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c6a6df2148f4/vmlinux-26fd6bff.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9b86e0551588/bzImage-26fd6bff.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2488d8...@syzkaller.appspotmail.com
loop0: detected capacity change from 0 to 131072
F2FS-fs (loop0): QUOTA feature is enabled, so ignore qf_name
F2FS-fs (loop0): build fault injection rate: 7
F2FS-fs (loop0): build fault injection type: 0x40004
F2FS-fs (loop0): invalid crc value
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of read_compacted_summaries fs/f2fs/segment.c:4301 [inline]
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of restore_curseg_summaries fs/f2fs/segment.c:4445 [inline]
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of build_curseg+0x105c/0x30c0 fs/f2fs/segment.c:4983
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of restore_curseg_summaries fs/f2fs/segment.c:4452 [inline]
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of build_curseg+0x18ea/0x30c0 fs/f2fs/segment.c:4983
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of build_sit_entries+0x26c/0x1f10 fs/f2fs/segment.c:5000
F2FS-fs (loop0): inject invalid blkaddr in f2fs_is_valid_blkaddr of f2fs_ra_meta_pages+0x21c/0xd60 fs/f2fs/checkpoint.c:472
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of f2fs_get_meta_folio_retry+0x27/0x80 fs/f2fs/checkpoint.c:318
F2FS-fs (loop0): inject page alloc in f2fs_grab_cache_folio of f2fs_get_meta_folio_retry+0x27/0x80 fs/f2fs/checkpoint.c:318
------------[ cut here ]------------
kernel BUG at fs/f2fs/file.c:845!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:f2fs_do_truncate_blocks+0x1115/0x1140 fs/f2fs/file.c:845
Code: fc fc 90 0f 0b e8 8b 9d 9a fd 90 0f 0b e8 83 9d 9a fd 48 89 df 48 c7 c6 60 d1 1a 8c e8 54 f1 fc fc 90 0f 0b e8 6c 9d 9a fd 90 <0f> 0b e8 64 9d 9a fd 90 0f 0b 90 e9 93 fd ff ff e8 56 9d 9a fd 90
RSP: 0018:ffffc9000e4474c0 EFLAGS: 00010283
RAX: ffffffff842b1d34 RBX: 0000000000000003 RCX: 0000000000100000
RDX: ffffc9000f03a000 RSI: 0000000000035503 RDI: 0000000000035504
RBP: ffffc9000e447608 R08: ffff8880123b0000 R09: 0000000000000002
R10: 00000000fffffffe R11: 0000000000000002 R12: 0000000000000001
R13: 0000000000000000 R14: 1ffff92001c88ea0 R15: 00000000ffff039c
FS: 00007f7e02ee36c0(0000) GS:ffff88808c887000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff0305c4000 CR3: 0000000012d4c000 CR4: 0000000000352ef0
Call Trace:
<TASK>
f2fs_truncate_blocks+0x10a/0x300 fs/f2fs/file.c:882
f2fs_truncate+0x471/0x7c0 fs/f2fs/file.c:940
f2fs_evict_inode+0xa3f/0x1ac0 fs/f2fs/inode.c:907
evict+0x61e/0xb10 fs/inode.c:841
f2fs_fill_super+0x5f43/0x78f0 fs/f2fs/super.c:5224
get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
vfs_get_tree+0x92/0x2a0 fs/super.c:1754
fc_mount fs/namespace.c:1193 [inline]
do_new_mount_fc fs/namespace.c:3758 [inline]
do_new_mount+0x341/0xd30 fs/namespace.c:3834
do_mount fs/namespace.c:4167 [inline]
__do_sys_mount fs/namespace.c:4383 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4360
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7e01f9e04a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7e02ee2e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7e02ee2ea0 RCX: 00007f7e01f9e04a
RDX: 0000200000000080 RSI: 00002000000105c0 RDI: 00007f7e02ee2e60
RBP: 0000200000000080 R08: 00007f7e02ee2ea0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000105c0
R13: 00007f7e02ee2e60 R14: 0000000000010589 R15: 0000200000000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:f2fs_do_truncate_blocks+0x1115/0x1140 fs/f2fs/file.c:845
Code: fc fc 90 0f 0b e8 8b 9d 9a fd 90 0f 0b e8 83 9d 9a fd 48 89 df 48 c7 c6 60 d1 1a 8c e8 54 f1 fc fc 90 0f 0b e8 6c 9d 9a fd 90 <0f> 0b e8 64 9d 9a fd 90 0f 0b 90 e9 93 fd ff ff e8 56 9d 9a fd 90
RSP: 0018:ffffc9000e4474c0 EFLAGS: 00010283
RAX: ffffffff842b1d34 RBX: 0000000000000003 RCX: 0000000000100000
RDX: ffffc9000f03a000 RSI: 0000000000035503 RDI: 0000000000035504
RBP: ffffc9000e447608 R08: ffff8880123b0000 R09: 0000000000000002
R10: 00000000fffffffe R11: 0000000000000002 R12: 0000000000000001
R13: 0000000000000000 R14: 1ffff92001c88ea0 R15: 00000000ffff039c
FS: 00007f7e02ee36c0(0000) GS:ffff88808c887000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e028509c38 CR3: 0000000012d4c000 CR4: 0000000000352ef0
---
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 report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
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