kernel BUG in reiserfs_in_journal

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syzbot

unread,
Oct 16, 2022, 3:52:43 AM10/16/22
to syzkaller...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=10ffb8c2880000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=5c22f792f3f1c70805bb
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11e72d34880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=101bb31a880000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/98c0bdb4abb3/disk-3f8a27f9.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ea228ff02669/vmlinux-3f8a27f9.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/a197f573dfda/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+5c22f7...@syzkaller.appspotmail.com

REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using rupasov hash to sort names
REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
------------[ cut here ]------------
kernel BUG at fs/reiserfs/journal.c:509!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8119 Comm: syz-executor164 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:reiserfs_in_journal+0x49c/0x6f0 fs/reiserfs/journal.c:509
Code: 39 ec 75 a7 e8 95 9d 8c ff 48 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 30 00 0f 85 79 01 00 00 48 3b 5d 08 75 86 e8 74 9d 8c ff <0f> 0b e8 6d 9d 8c ff 48 8b 9b 80 06 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffff888095137340 EFLAGS: 00010293
RAX: ffff8880b53a6080 RBX: ffff8880b131a500 RCX: ffffffff81d5e7d1
RDX: 0000000000000000 RSI: ffffffff81d5e7fc RDI: ffffc90001b46050
RBP: ffffc90001b46048 R08: ffff888095137430 R09: 0000000000000213
R10: 0000000000000006 R11: 0000000000000000 R12: 0000000000000213
R13: 0000000000000213 R14: dffffc0000000000 R15: 0000000000000b32
FS: 0000555555f9e300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555f50998438 CR3: 00000000aa2e6000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
is_block_in_journal fs/reiserfs/bitmap.c:125 [inline]
scan_bitmap_block.constprop.0+0x486/0xf60 fs/reiserfs/bitmap.c:203
scan_bitmap fs/reiserfs/bitmap.c:408 [inline]
allocate_without_wrapping_disk fs/reiserfs/bitmap.c:1161 [inline]
blocknrs_and_prealloc_arrays_from_search_start fs/reiserfs/bitmap.c:1274 [inline]
reiserfs_allocate_blocknrs+0x1f8f/0x4cd0 fs/reiserfs/bitmap.c:1375
reiserfs_new_unf_blocknrs fs/reiserfs/reiserfs.h:3360 [inline]
_allocate_block fs/reiserfs/inode.c:653 [inline]
reiserfs_get_block+0x948/0x3e40 fs/reiserfs/inode.c:764
__block_write_begin_int+0x46c/0x17b0 fs/buffer.c:1978
reiserfs_write_begin+0x39f/0xa10 fs/reiserfs/inode.c:2794
generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170
__generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295
generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323
call_write_iter include/linux/fs.h:1821 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x51b/0x770 fs/read_write.c:487
vfs_write+0x1f3/0x540 fs/read_write.c:549
ksys_write+0x12b/0x2a0 fs/read_write.c:599
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fa9e36678d9
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:00007ffdc5507848 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa9e36678d9
RDX: 000000006db6e559 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fa9e36d5ec0 R09: 00007fa9e36d5ec0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdc5507870
R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000
Modules linked in:
---[ end trace 4257f72bbb175b1f ]---
RIP: 0010:reiserfs_in_journal+0x49c/0x6f0 fs/reiserfs/journal.c:509
Code: 39 ec 75 a7 e8 95 9d 8c ff 48 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 30 00 0f 85 79 01 00 00 48 3b 5d 08 75 86 e8 74 9d 8c ff <0f> 0b e8 6d 9d 8c ff 48 8b 9b 80 06 00 00 48 b8 00 00 00 00 00 fc
RSP: 0018:ffff888095137340 EFLAGS: 00010293
RAX: ffff8880b53a6080 RBX: ffff8880b131a500 RCX: ffffffff81d5e7d1
RDX: 0000000000000000 RSI: ffffffff81d5e7fc RDI: ffffc90001b46050
RBP: ffffc90001b46048 R08: ffff888095137430 R09: 0000000000000213
R10: 0000000000000006 R11: 0000000000000000 R12: 0000000000000213
R13: 0000000000000213 R14: dffffc0000000000 R15: 0000000000000b32
FS: 0000555555f9e300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555f509820d0 CR3: 00000000aa2e6000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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syzbot

unread,
Oct 16, 2022, 4:57:37 AM10/16/22
to syzkaller...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: 9d5c0b3a8e1a Linux 4.14.295
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11f2104a880000
kernel config: https://syzkaller.appspot.com/x/.config?x=746c079015a92425
dashboard link: https://syzkaller.appspot.com/bug?extid=cbbb86a8f71dd37b8e7c
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14fee362880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10518272880000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/ed6fcf5895a2/disk-9d5c0b3a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/341aa3534116/vmlinux-9d5c0b3a.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/5d7ad248a3fc/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+cbbb86...@syzkaller.appspotmail.com

REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using rupasov hash to sort names
REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
------------[ cut here ]------------
kernel BUG at fs/reiserfs/journal.c:508!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 7951 Comm: syz-executor426 Not tainted 4.14.295-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
task: ffff888097930440 task.stack: ffff888099600000
RIP: 0010:reiserfs_in_journal+0x420/0x600 fs/reiserfs/journal.c:508
RSP: 0018:ffff888099607428 EFLAGS: 00010297
RAX: ffff888097930440 RBX: ffff8880b33eee80 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000008000 RDI: ffffc90001af8050
RBP: ffffc90001af8048 R08: ffff888099607508 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000213 R14: 000000000000b0e0 R15: ffffc90001ad6000
FS: 0000555555fba300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe839d83010 CR3: 00000000af35f000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
is_block_in_journal fs/reiserfs/bitmap.c:125 [inline]
scan_bitmap_block.constprop.0+0x3db/0xd20 fs/reiserfs/bitmap.c:203
scan_bitmap fs/reiserfs/bitmap.c:408 [inline]
allocate_without_wrapping_disk fs/reiserfs/bitmap.c:1161 [inline]
blocknrs_and_prealloc_arrays_from_search_start fs/reiserfs/bitmap.c:1274 [inline]
reiserfs_allocate_blocknrs+0x1a63/0x4640 fs/reiserfs/bitmap.c:1375
reiserfs_new_unf_blocknrs fs/reiserfs/reiserfs.h:3360 [inline]
_allocate_block fs/reiserfs/inode.c:653 [inline]
reiserfs_get_block+0x865/0x36b0 fs/reiserfs/inode.c:764
__block_write_begin_int+0x35c/0x11d0 fs/buffer.c:2038
reiserfs_write_begin+0x2e3/0x8a0 fs/reiserfs/inode.c:2793
generic_perform_write+0x1c9/0x420 mm/filemap.c:3055
__generic_file_write_iter+0x227/0x590 mm/filemap.c:3180
generic_file_write_iter+0x36f/0x650 mm/filemap.c:3208
call_write_iter include/linux/fs.h:1780 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x44c/0x630 fs/read_write.c:482
vfs_write+0x17f/0x4d0 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xf2/0x210 fs/read_write.c:582
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fcd117358d9
RSP: 002b:00007ffc8a81e408 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcd117358d9
RDX: 000000006db6e559 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fcd117a3ec0 R09: 00007fcd117a3ec0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc8a81e430
R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000
Code: 49 39 c5 75 b3 e8 41 3f a3 ff 48 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 17 01 00 00 48 3b 5d 08 75 92 e8 20 3f a3 ff <0f> 0b e8 19 3f a3 ff 48 8b 9b 80 06 00 00 48 b8 00 00 00 00 00
RIP: reiserfs_in_journal+0x420/0x600 fs/reiserfs/journal.c:508 RSP: ffff888099607428
---[ end trace e540e298c4bdca88 ]---
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