* [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2)
@ 2024-10-25 6:49 syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2024-10-25 6:49 UTC (permalink / raw)
To: jfs-discussion, linux-kernel, shaggy, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: c2ee9f594da8 KVM: selftests: Fix build on on non-x86 archi..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=134fc640580000
kernel config: https://syzkaller.appspot.com/x/.config?x=fc6f8ce8c5369043
dashboard link: https://syzkaller.appspot.com/bug?extid=9e90a1c5eedb9dc4c6cc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=118f0287980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=128f8a5f980000
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-c2ee9f59.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8a3541902b13/vmlinux-c2ee9f59.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a00efacc2604/bzImage-c2ee9f59.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/0a96c5cc2569/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9e90a1c5eedb9dc4c6cc@syzkaller.appspotmail.com
ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): dbDiscardAG: -EIO
ERROR: (device loop0): dbAllocBits: leaf page corrupt
------------[ cut here ]------------
UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:3028:55
shift exponent 32 is too large for 32-bit type 'u32' (aka 'unsigned int')
CPU: 0 UID: 0 PID: 5092 Comm: syz-executor128 Not tainted 6.12.0-rc4-syzkaller-00047-gc2ee9f594da8 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
ubsan_epilogue lib/ubsan.c:231 [inline]
__ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468
dbFindBits+0x11a/0x1d0 fs/jfs/jfs_dmap.c:3028
dbAllocDmapLev+0x1e9/0x4a0 fs/jfs/jfs_dmap.c:1985
dbAllocCtl+0x113/0x920 fs/jfs/jfs_dmap.c:1825
dbAllocAG+0x28f/0x10b0 fs/jfs/jfs_dmap.c:1364
dbDiscardAG+0x352/0xa20 fs/jfs/jfs_dmap.c:1613
jfs_ioc_trim+0x45a/0x6b0 fs/jfs/jfs_discard.c:105
jfs_ioctl+0x2cd/0x3e0 fs/jfs/ioctl.c:131
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
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: 0033:0x7f54e7034c99
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007ffd37b5c358 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f54e7034c99
RDX: 00000000200000c0 RSI: 00000000c0185879 RDI: 0000000000000004
RBP: 00007f54e70ad5f0 R08: 000055557b4874c0 R09: 000055557b4874c0
R10: 000055557b4874c0 R11: 0000000000000246 R12: 00007ffd37b5c380
R13: 00007ffd37b5c5a8 R14: 431bde82d7b634db R15: 00007f54e707d03b
</TASK>
---[ end trace ]---
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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If the report is already addressed, let syzbot know by replying with:
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2)
2024-10-25 15:24 [PATCH v2] jfs: UBSAN: shift-out-of-bounds in dbFindBits Matt Jan
@ 2024-10-25 15:39 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2024-10-25 15:39 UTC (permalink / raw)
To: jfs-discussion, linux-kernel, shaggy, skhan, syzkaller-bugs,
zoo868e
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
kernel BUG in dbFindBits
ERROR: (device loop0): dbAllocBits: leaf page corrupt
BUG at fs/jfs/jfs_dmap.c:3018 assert(nb < DBWORD || (nb == DBWORD && !word))
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:3018!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5606 Comm: syz.0.15 Not tainted 6.12.0-rc4-syzkaller-00161-gae90f6a6170d-dirty #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:dbFindBits+0x1dc/0x210 fs/jfs/jfs_dmap.c:3018
Code: e9 fa fe ff ff e8 74 40 68 fe 48 c7 c7 00 33 43 8c 48 c7 c6 40 30 43 8c ba ca 0b 00 00 48 c7 c1 c0 3a 43 8c e8 65 30 97 08 90 <0f> 0b e8 4d 40 68 fe 48 c7 c7 00 33 43 8c 48 c7 c6 40 30 43 8c ba
RSP: 0018:ffffc9000b107940 EFLAGS: 00010246
RAX: 000000000000004c RBX: ffff88801f140800 RCX: 37b0eb8928fc2800
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000020 R08: ffffffff81749f8c R09: 1ffff92001620ec4
R10: dffffc0000000000 R11: fffff52001620ec5 R12: 0000000000000020
R13: 1ffff92001620f38 R14: 00000000ffffffff R15: 0000000000000005
FS: 00007fd1f83196c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ea5ffff CR3: 00000000415e4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
dbAllocDmapLev+0x1e9/0x4a0 fs/jfs/jfs_dmap.c:1985
dbAllocCtl+0x113/0x920 fs/jfs/jfs_dmap.c:1825
dbAllocAG+0x28f/0x10b0 fs/jfs/jfs_dmap.c:1364
dbDiscardAG+0x352/0xa20 fs/jfs/jfs_dmap.c:1613
jfs_ioc_trim+0x45a/0x6b0 fs/jfs/jfs_discard.c:105
jfs_ioctl+0x2cd/0x3e0 fs/jfs/ioctl.c:131
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
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: 0033:0x7fd1f757dff9
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:00007fd1f8319038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd1f7735f80 RCX: 00007fd1f757dff9
RDX: 00000000200000c0 RSI: 00000000c0185879 RDI: 0000000000000004
RBP: 00007fd1f75f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd1f7735f80 R15: 00007ffdd2e520e8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindBits+0x1dc/0x210 fs/jfs/jfs_dmap.c:3018
Code: e9 fa fe ff ff e8 74 40 68 fe 48 c7 c7 00 33 43 8c 48 c7 c6 40 30 43 8c ba ca 0b 00 00 48 c7 c1 c0 3a 43 8c e8 65 30 97 08 90 <0f> 0b e8 4d 40 68 fe 48 c7 c7 00 33 43 8c 48 c7 c6 40 30 43 8c ba
RSP: 0018:ffffc9000b107940 EFLAGS: 00010246
RAX: 000000000000004c RBX: ffff88801f140800 RCX: 37b0eb8928fc2800
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000020 R08: ffffffff81749f8c R09: 1ffff92001620ec4
R10: dffffc0000000000 R11: fffff52001620ec5 R12: 0000000000000020
R13: 1ffff92001620f38 R14: 00000000ffffffff R15: 0000000000000005
FS: 00007fd1f83196c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ea5ffff CR3: 00000000415e4000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Tested on:
commit: ae90f6a6 Merge tag 'bpf-fixes' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=166868a7980000
kernel config: https://syzkaller.appspot.com/x/.config?x=fc6f8ce8c5369043
dashboard link: https://syzkaller.appspot.com/bug?extid=9e90a1c5eedb9dc4c6cc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=10a7de40580000
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2)
[not found] <20241025163019.14018-1-zoo868e@gmail.com>
@ 2024-10-25 16:50 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2024-10-25 16:50 UTC (permalink / raw)
To: linux-kernel, syzkaller-bugs, zoo868e
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+9e90a1c5eedb9dc4c6cc@syzkaller.appspotmail.com
Tested-by: syzbot+9e90a1c5eedb9dc4c6cc@syzkaller.appspotmail.com
Tested on:
commit: ae90f6a6 Merge tag 'bpf-fixes' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=17968230580000
kernel config: https://syzkaller.appspot.com/x/.config?x=fc6f8ce8c5369043
dashboard link: https://syzkaller.appspot.com/bug?extid=9e90a1c5eedb9dc4c6cc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=1231b287980000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2)
2024-10-25 17:00 [PATCH v3] jfs: UBSAN: shift-out-of-bounds in dbFindBits Matt Jan
@ 2024-10-25 17:20 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2024-10-25 17:20 UTC (permalink / raw)
To: jfs-discussion, linux-kernel, shaggy, skhan, syzkaller-bugs,
zoo868e
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+9e90a1c5eedb9dc4c6cc@syzkaller.appspotmail.com
Tested-by: syzbot+9e90a1c5eedb9dc4c6cc@syzkaller.appspotmail.com
Tested on:
commit: ae90f6a6 Merge tag 'bpf-fixes' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1274aebb980000
kernel config: https://syzkaller.appspot.com/x/.config?x=fc6f8ce8c5369043
dashboard link: https://syzkaller.appspot.com/bug?extid=9e90a1c5eedb9dc4c6cc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=1254aebb980000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2)
2024-11-01 9:59 [PATCH v4] jfs: UBSAN: shift-out-of-bounds in dbFindBits Matt Jan
@ 2024-11-01 10:20 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2024-11-01 10:20 UTC (permalink / raw)
To: jfs-discussion, linux-kernel, shaggy, skhan, syzkaller-bugs,
zoo868e
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-by: syzbot+9e90a1c5eedb9dc4c6cc@syzkaller.appspotmail.com
Tested-by: syzbot+9e90a1c5eedb9dc4c6cc@syzkaller.appspotmail.com
Tested on:
commit: 6c52d4da Merge tag 'for-linus' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=116eb2a7980000
kernel config: https://syzkaller.appspot.com/x/.config?x=35698c25466f388c
dashboard link: https://syzkaller.appspot.com/bug?extid=9e90a1c5eedb9dc4c6cc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=1293e6f7980000
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2)
[not found] <87ecrr75n6.fsf@gmail.com>
@ 2025-09-28 1:16 ` syzbot
0 siblings, 0 replies; 6+ messages in thread
From: syzbot @ 2025-09-28 1:16 UTC (permalink / raw)
To: linux-kernel, syzkaller-bugs, xandfury
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
UBSAN: shift-out-of-bounds in dbFindBits
ERROR: (device loop0): dbAllocBits: leaf page corrupt
------------[ cut here ]------------
UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:3031:55
shift exponent 32 is too large for 32-bit type 'u32' (aka 'unsigned int')
CPU: 0 UID: 0 PID: 5831 Comm: syz.0.16 Not tainted syzkaller #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
Call Trace:
<TASK>
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
ubsan_epilogue+0xa/0x40 lib/ubsan.c:233
__ubsan_handle_shift_out_of_bounds+0x386/0x410 lib/ubsan.c:494
dbFindBits+0xdf/0x1a0 fs/jfs/jfs_dmap.c:3031
dbAllocDmapLev+0x16b/0x3c0 fs/jfs/jfs_dmap.c:1985
dbAllocCtl+0x14a/0x9c0 fs/jfs/jfs_dmap.c:1825
dbAllocAG+0x1e6/0xff0 fs/jfs/jfs_dmap.c:1353
dbDiscardAG+0x2df/0x900 fs/jfs/jfs_dmap.c:1608
jfs_ioc_trim+0x429/0x690 fs/jfs/jfs_discard.c:106
jfs_ioctl+0x2b5/0x3d0 fs/jfs/ioctl.c:131
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:598 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:584
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f894198cda9
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:00007f894286c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8941ba5fa0 RCX: 00007f894198cda9
RDX: 00000000200000c0 RSI: 00000000c0185879 RDI: 0000000000000004
RBP: 00007f8941a0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8941ba5fa0 R15: 00007ffd6f2d8608
</TASK>
---[ end trace ]---
Tested on:
commit: 51a24b7d Merge tag 'trace-tools-v6.17-rc5' of git://gi..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=103472e2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=231ef872e038778b
dashboard link: https://syzkaller.appspot.com/bug?extid=9e90a1c5eedb9dc4c6cc
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
Note: no patches were applied.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2025-09-28 1:16 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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[not found] <87ecrr75n6.fsf@gmail.com>
2025-09-28 1:16 ` [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2) syzbot
2024-11-01 9:59 [PATCH v4] jfs: UBSAN: shift-out-of-bounds in dbFindBits Matt Jan
2024-11-01 10:20 ` [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2) syzbot
-- strict thread matches above, loose matches on Subject: below --
2024-10-25 17:00 [PATCH v3] jfs: UBSAN: shift-out-of-bounds in dbFindBits Matt Jan
2024-10-25 17:20 ` [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2) syzbot
[not found] <20241025163019.14018-1-zoo868e@gmail.com>
2024-10-25 16:50 ` syzbot
2024-10-25 15:24 [PATCH v2] jfs: UBSAN: shift-out-of-bounds in dbFindBits Matt Jan
2024-10-25 15:39 ` [syzbot] [jfs?] UBSAN: shift-out-of-bounds in dbFindBits (2) syzbot
2024-10-25 6:49 syzbot
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