[syzbot] [ocfs2?] kernel BUG in ocfs2_page_mkwrite (2)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: ab75170520d4 Merge tag 'linux-watchdog-6.13-rc6' of git://..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=147756f8580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1c541fa8af5c9cc7
dashboard link: https://syzkaller.appspot.com/bug?extid=ecfa701c0b41415f36d4
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-ab751705.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/81d0d11be3bd/vmlinux-ab751705.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1f076be686f8/bzImage-ab751705.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ecfa70...@syzkaller.appspotmail.com

loop0: detected capacity change from 0 to 32768
=======================================================
WARNING: The mand mount option has been deprecated and
and is ignored by this kernel. Remove the mand
option from the mount to silence this warning.
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
Aborting journal on device loop0-75.
syz.0.0: attempt to access beyond end of device
loop0: rw=169985, sector=640, nr_sectors = 1 limit=0
Buffer I/O error on dev loop0, logical block 640, lost sync page write
JBD2: I/O error when updating journal superblock for loop0-75.
(syz.0.0,5316,0):__ocfs2_journal_access:705 ERROR: Error -5 getting 1 access to buffer!
(syz.0.0,5316,0):ocfs2_rotate_rightmost_leaf_left:2893 ERROR: status = -5
(syz.0.0,5316,0):ocfs2_rotate_tree_left:3172 ERROR: status = -5
(syz.0.0,5316,0):ocfs2_try_to_merge_extent:3821 ERROR: status = -5
(syz.0.0,5316,0):__ocfs2_journal_access:705 ERROR: Error -30 getting 1 access to buffer!
(syz.0.0,5316,0):ocfs2_write_end_nolock:1966 ERROR: status = -30
(syz.0.0,5316,0):ocfs2_commit_trans:382 ERROR: status = -5
------------[ cut here ]------------
kernel BUG at fs/ocfs2/mmap.c:107!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5316 Comm: syz.0.0 Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__ocfs2_page_mkwrite fs/ocfs2/mmap.c:107 [inline]
RIP: 0010:ocfs2_page_mkwrite+0xd79/0xd80 fs/ocfs2/mmap.c:144
Code: 6d 68 0a fe 4c 89 e8 48 83 e0 01 75 0a e8 7f 63 0a fe e9 28 f8 ff ff 49 ff cd e8 72 63 0a fe e9 20 f8 ff ff e8 68 63 0a fe 90 <0f> 0b 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d23e2a0 EFLAGS: 00010283
RAX: ffffffff839520b8 RBX: 00000000ffffffe2 RCX: 0000000000100000
RDX: ffffc9000e76a000 RSI: 000000000008ba1e RDI: 000000000008ba1f
RBP: ffffc9000d23e460 R08: ffffffff83951ec7 R09: 1ffffffff2854931
R10: dffffc0000000000 R11: fffffbfff2854932 R12: dffffc0000000000
R13: 0000000000100000 R14: 00000000000000f4 R15: 0000000000000000
FS: 00007f94021ad6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcae4e6348 CR3: 0000000043c9c000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
do_page_mkwrite+0x15c/0x350 mm/memory.c:3176
do_shared_fault mm/memory.c:5398 [inline]
do_fault mm/memory.c:5460 [inline]
do_pte_missing mm/memory.c:3979 [inline]
handle_pte_fault+0x10c6/0x5ed0 mm/memory.c:5801
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6112
faultin_page mm/gup.c:1196 [inline]
__get_user_pages+0x1c82/0x49e0 mm/gup.c:1494
__get_user_pages_locked mm/gup.c:1760 [inline]
__gup_longterm_locked+0xe64/0x17f0 mm/gup.c:2532
gup_fast_fallback+0x2266/0x29c0 mm/gup.c:3434
pin_user_pages_fast+0xcc/0x160 mm/gup.c:3540
iov_iter_extract_user_pages lib/iov_iter.c:1844 [inline]
iov_iter_extract_pages+0x3bb/0x5c0 lib/iov_iter.c:1907
dio_refill_pages fs/direct-io.c:172 [inline]
dio_get_page fs/direct-io.c:213 [inline]
do_direct_IO fs/direct-io.c:915 [inline]
__blockdev_direct_IO+0x1443/0x4890 fs/direct-io.c:1243
ocfs2_direct_IO+0x255/0x2c0 fs/ocfs2/aops.c:2464
generic_file_read_iter+0x341/0x550 mm/filemap.c:2811
ocfs2_file_read_iter+0x42b/0xb80 fs/ocfs2/file.c:2589
aio_read+0x363/0x500 fs/aio.c:1602
io_submit_one+0x884/0x18a0 fs/aio.c:2052
__do_sys_io_submit fs/aio.c:2111 [inline]
__se_sys_io_submit+0x171/0x2e0 fs/aio.c:2081
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9401385d29
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f94021ad038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f9401575fa0 RCX: 00007f9401385d29
RDX: 0000000020001d00 RSI: 000000001ffffff0 RDI: 00007f9402153000
RBP: 00007f9401401b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9401575fa0 R15: 00007ffe0ce4f5d8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ocfs2_page_mkwrite fs/ocfs2/mmap.c:107 [inline]
RIP: 0010:ocfs2_page_mkwrite+0xd79/0xd80 fs/ocfs2/mmap.c:144
Code: 6d 68 0a fe 4c 89 e8 48 83 e0 01 75 0a e8 7f 63 0a fe e9 28 f8 ff ff 49 ff cd e8 72 63 0a fe e9 20 f8 ff ff e8 68 63 0a fe 90 <0f> 0b 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d23e2a0 EFLAGS: 00010283
RAX: ffffffff839520b8 RBX: 00000000ffffffe2 RCX: 0000000000100000
RDX: ffffc9000e76a000 RSI: 000000000008ba1e RDI: 000000000008ba1f
RBP: ffffc9000d23e460 R08: ffffffff83951ec7 R09: 1ffffffff2854931
R10: dffffc0000000000 R11: fffffbfff2854932 R12: dffffc0000000000
R13: 0000000000100000 R14: 00000000000000f4 R15: 0000000000000000
FS: 00007f94021ad6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcae4e6348 CR3: 0000000043c9c000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 119009db2674 Merge tag 'vfs-6.15-rc3.fixes.2' of git://git..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15eb7bac580000
kernel config: https://syzkaller.appspot.com/x/.config?x=68d9f79fc685cd4
dashboard link: https://syzkaller.appspot.com/bug?extid=ecfa701c0b41415f36d4
compiler: Debian clang version 15.0.6, Debian LLD 15.0.6
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13bd463f980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=136374cc580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-119009db.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1ab6d3b3b5de/vmlinux-119009db.xz
kernel image: https://storage.googleapis.com/syzbot-assets/648d06f0fb1a/bzImage-119009db.xz
mounted in repro #1: https://storage.googleapis.com/syzbot-assets/c4ac14e1235a/mount_0.gz
fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=115f6ccc580000)
mounted in repro #2: https://storage.googleapis.com/syzbot-assets/2b07efcbe0ca/mount_4.gz
fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=13523fe4580000)

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ecfa70...@syzkaller.appspotmail.com

(syz-executor297,5383,0):ocfs2_write_end_nolock:1942 ERROR: status = -30
(syz-executor297,5383,0):ocfs2_commit_trans:382 ERROR: status = -5

------------[ cut here ]------------
kernel BUG at fs/ocfs2/mmap.c:107!

Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5383 Comm: syz-executor297 Not tainted 6.15.0-rc2-syzkaller-00471-g119009db2674 #0 PREEMPT(full)

Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__ocfs2_page_mkwrite fs/ocfs2/mmap.c:107 [inline]

RIP: 0010:ocfs2_page_mkwrite+0xda1/0xdb0 fs/ocfs2/mmap.c:144
Code: ff df 4d 89 fc e9 85 f3 ff ff 48 ff cb e8 c7 2e f9 fd 49 89 dc 49 be 00 00 00 00 00 fc ff df e9 6b f3 ff ff e8 b0 2e f9 fd 90 <0f> 0b cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d3b6e00 EFLAGS: 00010293
RAX: ffffffff83c98e70 RBX: 00000000ffffffe2 RCX: ffff8880006c4880
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 00000000ffffffe2
RBP: ffffc9000d3b6fc0 R08: ffffffff83c98c62 R09: 1ffffffff20bfc8e
R10: dffffc0000000000 R11: fffffbfff20bfc8f R12: 0000000000001000
R13: 0000000000008000 R14: ffffea000125c000 R15: 0000000000000000
FS: 0000555580515380(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000200000008000 CR3: 000000004417a000 CR4: 0000000000352ef0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>

do_page_mkwrite+0x159/0x340 mm/memory.c:3287
do_shared_fault mm/memory.c:5594 [inline]
do_fault mm/memory.c:5656 [inline]
do_pte_missing mm/memory.c:4160 [inline]
handle_pte_fault+0x10c6/0x61c0 mm/memory.c:5997
__handle_mm_fault mm/memory.c:6140 [inline]
handle_mm_fault+0x1129/0x1bf0 mm/memory.c:6309
do_user_addr_fault arch/x86/mm/fault.c:1388 [inline]
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x2bb/0x920 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_movs_alternative+0x4a/0x90 arch/x86/lib/copy_user_64.S:74
Code: cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 <f3> a4 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48
RSP: 0018:ffffc9000d3b76d8 EFLAGS: 00050206
RAX: ffffffff85018101 RBX: 0000200000007400 RCX: 0000000000000400
RDX: 0000000000000000 RSI: ffff888048e7fc00 RDI: 0000200000008000
RBP: ffffc9000d3b7858 R08: ffff888048e7ffff R09: 1ffff110091cffff
R10: dffffc0000000000 R11: ffffed10091d0000 R12: 1ffff92001a76fb3
R13: ffffc9000d3b7d98 R14: 0000000000001000 R15: ffff888048e7f000
copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline]
copy_to_user_iter lib/iov_iter.c:25 [inline]
iterate_ubuf include/linux/iov_iter.h:30 [inline]
iterate_and_advance2 include/linux/iov_iter.h:300 [inline]
iterate_and_advance include/linux/iov_iter.h:328 [inline]
_copy_to_iter+0x268/0x1c90 lib/iov_iter.c:185
copy_page_to_iter+0xb1/0x160 lib/iov_iter.c:362
copy_folio_to_iter include/linux/uio.h:198 [inline]
filemap_read+0x88f/0x1260 mm/filemap.c:2753
ocfs2_file_read_iter+0x42d/0xb80 fs/ocfs2/file.c:2589
new_sync_read fs/read_write.c:489 [inline]
vfs_read+0x9a0/0xb90 fs/read_write.c:570
ksys_read+0x19d/0x2d0 fs/read_write.c:713
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f554499e529
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff47d84cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000200000000300 RCX: 00007f554499e529
RDX: 000000000000fdef RSI: 0000200000000400 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00007fff47d84d30 R09: 00007fff47d84d30
R10: 0023706f6f6c2f76 R11: 0000000000000246 R12: 00007fff47d84d1c
R13: 0000000000000018 R14: 431bde82d7b634db R15: 00007fff47d84d50

</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ocfs2_page_mkwrite fs/ocfs2/mmap.c:107 [inline]

RIP: 0010:ocfs2_page_mkwrite+0xda1/0xdb0 fs/ocfs2/mmap.c:144
Code: ff df 4d 89 fc e9 85 f3 ff ff 48 ff cb e8 c7 2e f9 fd 49 89 dc 49 be 00 00 00 00 00 fc ff df e9 6b f3 ff ff e8 b0 2e f9 fd 90 <0f> 0b cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d3b6e00 EFLAGS: 00010293
RAX: ffffffff83c98e70 RBX: 00000000ffffffe2 RCX: ffff8880006c4880
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 00000000ffffffe2
RBP: ffffc9000d3b6fc0 R08: ffffffff83c98c62 R09: 1ffffffff20bfc8e
R10: dffffc0000000000 R11: fffffbfff20bfc8f R12: 0000000000001000
R13: 0000000000008000 R14: ffffea000125c000 R15: 0000000000000000
FS: 0000555580515380(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 0000200000008000 CR3: 000000004417a000 CR4: 0000000000352ef0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

----------------
Code disassembly (best guess):
0: cc int3
1: cc int3
2: cc int3
3: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
a: 00 00 00
d: 0f 1f 00 nopl (%rax)
10: 48 8b 06 mov (%rsi),%rax
13: 48 89 07 mov %rax,(%rdi)
16: 48 83 c6 08 add $0x8,%rsi
1a: 48 83 c7 08 add $0x8,%rdi
1e: 83 e9 08 sub $0x8,%ecx
21: 74 db je 0xfffffffe
23: 83 f9 08 cmp $0x8,%ecx
26: 73 e8 jae 0x10
28: eb c5 jmp 0xffffffef
* 2a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction
2c: c3 ret
2d: cc int3
2e: cc int3
2f: cc int3
30: cc int3
31: 48 8b 06 mov (%rsi),%rax
34: 48 89 07 mov %rax,(%rdi)
37: 48 8d 47 08 lea 0x8(%rdi),%rax
3b: 48 83 e0 f8 and $0xfffffffffffffff8,%rax
3f: 48 rex.W


---
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[syzbot]

Auto-closing this bug as obsolete.
No recent activity, existing reproducers are no longer triggering the issue.