linux-kernel - [syzbot] [ocfs2?] WARNING in poll_select

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Message-ID: <674832cb.050a0220.253251.007a.GAE@google.com>
Date: Thu, 28 Nov 2024 01:07:23 -0800
From: syzbot <syzbot+15f68436afaf0cc3af11@...kaller.appspotmail.com>
To: brauner@...nel.org, jack@...e.cz, jlbec@...lplan.org, 
	joseph.qi@...ux.alibaba.com, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, mark@...heh.com, ocfs2-devel@...ts.linux.dev, 
	syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: [syzbot] [ocfs2?] WARNING in poll_select_finish

Hello,

syzbot found the following issue on:

HEAD commit:    7b1d1d4cfac0 Merge remote-tracking branch 'iommu/arm/smmu'..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=127619c0580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=dfe1e340fbee3d16
dashboard link: https://syzkaller.appspot.com/bug?extid=15f68436afaf0cc3af11
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12368530580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/354fe38e2935/disk-7b1d1d4c.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f12e0b1ef3fd/vmlinux-7b1d1d4c.xz
kernel image: https://storage.googleapis.com/syzbot-assets/291dbc519bb3/Image-7b1d1d4c.gz.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/c8d5f19b6cc3/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+15f68436afaf0cc3af11@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 6595 at include/linux/sched/signal.h:548 restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline]
WARNING: CPU: 0 PID: 6595 at include/linux/sched/signal.h:548 poll_select_finish+0x71c/0x7e0 fs/select.c:301
Modules linked in:
CPU: 0 UID: 0 PID: 6595 Comm: syz.0.15 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline]
pc : poll_select_finish+0x71c/0x7e0 fs/select.c:301
lr : restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline]
lr : poll_select_finish+0x71c/0x7e0 fs/select.c:301
sp : ffff8000a02e7b20
x29: ffff8000a02e7c20 x28: dfff800000000000 x27: 0000000000000000
x26: ffff70001405cf6c x25: 0000000000000002 x24: ffff8000a02e7ce0
x23: 0000000000000008 x22: ffff8000a02e7ba0 x21: ffff0000d55cbc80
x20: 0000000000000008 x19: 00000000fffffdfe x18: 1fffe000366c6876
x17: ffff80008f81d000 x16: ffff80008b3edfc8 x15: 0000000000000002
x14: 1ffff0001405cf74 x13: 0000000000000000 x12: 0000000000000000
x11: ffff70001405cf76 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000d55cbc80 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline] (P)
 poll_select_finish+0x71c/0x7e0 fs/select.c:301 (P)
 restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline] (L)
 poll_select_finish+0x71c/0x7e0 fs/select.c:301 (L)
 __do_sys_ppoll fs/select.c:1122 [inline]
 __se_sys_ppoll fs/select.c:1101 [inline]
 __arm64_sys_ppoll+0x2d8/0x358 fs/select.c:1101
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
irq event stamp: 796
hardirqs last  enabled at (795): [<ffff80008b4b56a4>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline]
hardirqs last  enabled at (795): [<ffff80008b4b56a4>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95
hardirqs last disabled at (796): [<ffff80008b4b302c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (752): [<ffff80008002f3d8>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (750): [<ffff80008002f3a4>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---


---
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 syzkaller@...glegroups.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 syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

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