[syzbot] [bluetooth?] WARNING in l2cap_do_send (2)
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syzbot
Dec 26, 2023, 5:54:29 PM12/26/23
to johan....@gmail.com, linux-b...@vger.kernel.org, linux-...@vger.kernel.org, luiz....@gmail.com, mar...@holtmann.org, syzkall...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: fbafc3e621c3 Merge tag 'for_linus' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15557616e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=e1e118a9228c45d7
dashboard link: https://syzkaller.appspot.com/bug?extid=d6cd076b385aefcb6b16
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14125c81e80000
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-fbafc3e6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d7e8a358761e/vmlinux-fbafc3e6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/dd1f54334d87/bzImage-fbafc3e6.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d6cd07...@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 2 PID: 6232 at kernel/workqueue.c:1722 __queue_work+0xdc6/0x11d0 kernel/workqueue.c:1721
Modules linked in:
CPU: 2 PID: 6232 Comm: syz-executor.2 Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__queue_work+0xdc6/0x11d0 kernel/workqueue.c:1721
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 a3 92 87 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 e4 a6 31 00 85 db 75 56 e8 6b ab 31 00 90 <0f> 0b 90 e9 ac f8 ff ff e8 5d ab 31 00 90 0f 0b 90 e9 5b f8 ff ff
RSP: 0018:ffffc90003bf7748 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8154b90c
RDX: ffff88801bf21280 RSI: ffffffff8154b915 RDI: 0000000000000005
RBP: 0000000000000200 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803fe4cdf0
R13: 0000000000000000 R14: ffff8880374f3000 R15: ffff8880374f3000
FS: 000055555556e480(0000) GS:ffff88806b800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000400 CR3: 000000001d1ad000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
queue_work_on+0xed/0x110 kernel/workqueue.c:1831
l2cap_do_send+0x318/0x470 net/bluetooth/l2cap_core.c:1015
l2cap_chan_send+0xb7d/0x2ae0 net/bluetooth/l2cap_core.c:2726
l2cap_sock_sendmsg+0x218/0x2e0 net/bluetooth/l2cap_sock.c:1154
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
____sys_sendmsg+0x2ac/0x940 net/socket.c:2584
___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
__sys_sendmmsg+0x1a1/0x450 net/socket.c:2724
__do_sys_sendmmsg net/socket.c:2753 [inline]
__se_sys_sendmmsg net/socket.c:2750 [inline]
__x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2750
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fa77e47cce9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc101fb238 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fa77e59bf80 RCX: 00007fa77e47cce9
RDX: 0000000000000735 RSI: 0000000020000b80 RDI: 0000000000000004
RBP: 00007fa77e4c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024044840 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000bf7 R14: 00007fa77e59bf80 R15: 00007fa77e59bf80
</TASK>
---
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 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
syzbot found the following issue on:
HEAD commit: fbafc3e621c3 Merge tag 'for_linus' of git://git.kernel.org..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15557616e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=e1e118a9228c45d7
dashboard link: https://syzkaller.appspot.com/bug?extid=d6cd076b385aefcb6b16
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14125c81e80000
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-fbafc3e6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d7e8a358761e/vmlinux-fbafc3e6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/dd1f54334d87/bzImage-fbafc3e6.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d6cd07...@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 2 PID: 6232 at kernel/workqueue.c:1722 __queue_work+0xdc6/0x11d0 kernel/workqueue.c:1721
Modules linked in:
CPU: 2 PID: 6232 Comm: syz-executor.2 Not tainted 6.7.0-rc7-syzkaller-00003-gfbafc3e621c3 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__queue_work+0xdc6/0x11d0 kernel/workqueue.c:1721
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 a3 92 87 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 e4 a6 31 00 85 db 75 56 e8 6b ab 31 00 90 <0f> 0b 90 e9 ac f8 ff ff e8 5d ab 31 00 90 0f 0b 90 e9 5b f8 ff ff
RSP: 0018:ffffc90003bf7748 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8154b90c
RDX: ffff88801bf21280 RSI: ffffffff8154b915 RDI: 0000000000000005
RBP: 0000000000000200 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803fe4cdf0
R13: 0000000000000000 R14: ffff8880374f3000 R15: ffff8880374f3000
FS: 000055555556e480(0000) GS:ffff88806b800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000400 CR3: 000000001d1ad000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
queue_work_on+0xed/0x110 kernel/workqueue.c:1831
l2cap_do_send+0x318/0x470 net/bluetooth/l2cap_core.c:1015
l2cap_chan_send+0xb7d/0x2ae0 net/bluetooth/l2cap_core.c:2726
l2cap_sock_sendmsg+0x218/0x2e0 net/bluetooth/l2cap_sock.c:1154
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
____sys_sendmsg+0x2ac/0x940 net/socket.c:2584
___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
__sys_sendmmsg+0x1a1/0x450 net/socket.c:2724
__do_sys_sendmmsg net/socket.c:2753 [inline]
__se_sys_sendmmsg net/socket.c:2750 [inline]
__x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2750
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fa77e47cce9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc101fb238 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fa77e59bf80 RCX: 00007fa77e47cce9
RDX: 0000000000000735 RSI: 0000000020000b80 RDI: 0000000000000004
RBP: 00007fa77e4c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024044840 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000bf7 R14: 00007fa77e59bf80 R15: 00007fa77e59bf80
</TASK>
---
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 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
Hillf Danton
Dec 27, 2023, 6:50:31 AM12/27/23
to syzbot, linux-...@vger.kernel.org, syzkall...@googlegroups.com
On Tue, 26 Dec 2023 14:54:27 -0800
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14125c81e80000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
--- x/net/bluetooth/hci_core.c
+++ y/net/bluetooth/hci_core.c
@@ -3237,7 +3237,13 @@ void hci_send_acl(struct hci_chan *chan,
hci_queue_acl(chan, &chan->data_q, skb, flags);
- queue_work(hdev->workqueue, &hdev->tx_work);
+ rcu_read_lock();
+ if (test_bit(HCI_RESET, &hdev->flags) ||
+ hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
+ ;
+ else
+ queue_work(hdev->workqueue, &hdev->tx_work);
+ rcu_read_unlock();
}
/* Send SCO data */
--
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14125c81e80000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
--- x/net/bluetooth/hci_core.c
+++ y/net/bluetooth/hci_core.c
@@ -3237,7 +3237,13 @@ void hci_send_acl(struct hci_chan *chan,
hci_queue_acl(chan, &chan->data_q, skb, flags);
- queue_work(hdev->workqueue, &hdev->tx_work);
+ rcu_read_lock();
+ if (test_bit(HCI_RESET, &hdev->flags) ||
+ hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE))
+ ;
+ else
+ queue_work(hdev->workqueue, &hdev->tx_work);
+ rcu_read_unlock();
}
/* Send SCO data */
--
syzbot
Dec 27, 2023, 7:07:07 AM12/27/23
to hda...@sina.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
WARNING in hci_send_acl
------------[ cut here ]------------
WARNING: CPU: 3 PID: 7942 at kernel/workqueue.c:1722 __queue_work+0xdc6/0x11d0 kernel/workqueue.c:1721
Modules linked in:
CPU: 3 PID: 7942 Comm: syz-executor.2 Not tainted 6.7.0-rc7-syzkaller-gfbafc3e621c3-dirty #0
R13: 0000000000000000 R14: ffff88802e93c000 R15: ffff88802e93c000
FS: 00007f0253c846c0(0000) GS:ffff88806b900000(0000) knlGS:0000000000000000
hci_send_acl+0xa0a/0xd10 net/bluetooth/hci_core.c:3245
RAX: ffffffffffffffda RBX: 00007f0252f9bf80 RCX: 00007f0252e7cce9
</TASK>
Tested on:
commit: fbafc3e6 Merge tag 'for_linus' of git://git.kernel.org..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=14c1f31ae80000
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
WARNING in hci_send_acl
------------[ cut here ]------------
WARNING: CPU: 3 PID: 7942 at kernel/workqueue.c:1722 __queue_work+0xdc6/0x11d0 kernel/workqueue.c:1721
Modules linked in:
CPU: 3 PID: 7942 Comm: syz-executor.2 Not tainted 6.7.0-rc7-syzkaller-gfbafc3e621c3-dirty #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__queue_work+0xdc6/0x11d0 kernel/workqueue.c:1721
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 a3 92 87 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 e4 a6 31 00 85 db 75 56 e8 6b ab 31 00 90 <0f> 0b 90 e9 ac f8 ff ff e8 5d ab 31 00 90 0f 0b 90 e9 5b f8 ff ff
RSP: 0018:ffffc900035c76b8 EFLAGS: 00010093
RIP: 0010:__queue_work+0xdc6/0x11d0 kernel/workqueue.c:1721
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 a3 92 87 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 e4 a6 31 00 85 db 75 56 e8 6b ab 31 00 90 <0f> 0b 90 e9 ac f8 ff ff e8 5d ab 31 00 90 0f 0b 90 e9 5b f8 ff ff
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8154b90c
RDX: ffff88803b7dce40 RSI: ffffffff8154b915 RDI: 0000000000000005
RBP: 0000000000000200 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888041fc4df0
R13: 0000000000000000 R14: ffff88802e93c000 R15: ffff88802e93c000
FS: 00007f0253c846c0(0000) GS:ffff88806b900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001038 CR3: 000000002a347000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
queue_work_on+0xed/0x110 kernel/workqueue.c:1831
queue_work include/linux/workqueue.h:562 [inline]
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
queue_work_on+0xed/0x110 kernel/workqueue.c:1831
hci_send_acl+0xa0a/0xd10 net/bluetooth/hci_core.c:3245
l2cap_do_send+0x318/0x470 net/bluetooth/l2cap_core.c:1015
l2cap_chan_send+0xb7d/0x2ae0 net/bluetooth/l2cap_core.c:2726
l2cap_sock_sendmsg+0x218/0x2e0 net/bluetooth/l2cap_sock.c:1154
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
____sys_sendmsg+0x2ac/0x940 net/socket.c:2584
___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
__sys_sendmmsg+0x1a1/0x450 net/socket.c:2724
__do_sys_sendmmsg net/socket.c:2753 [inline]
__se_sys_sendmmsg net/socket.c:2750 [inline]
__x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2750
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f0252e7cce9
l2cap_chan_send+0xb7d/0x2ae0 net/bluetooth/l2cap_core.c:2726
l2cap_sock_sendmsg+0x218/0x2e0 net/bluetooth/l2cap_sock.c:1154
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0xd5/0x180 net/socket.c:745
____sys_sendmsg+0x2ac/0x940 net/socket.c:2584
___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
__sys_sendmmsg+0x1a1/0x450 net/socket.c:2724
__do_sys_sendmmsg net/socket.c:2753 [inline]
__se_sys_sendmmsg net/socket.c:2750 [inline]
__x64_sys_sendmmsg+0x9c/0x100 net/socket.c:2750
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0253c840c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f0252f9bf80 RCX: 00007f0252e7cce9
RDX: 0000000000000735 RSI: 0000000020000b80 RDI: 0000000000000004
RBP: 00007f0252ec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024044840 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f0252f9bf80 R15: 00007ffdfd80dbc8
</TASK>
Tested on:
commit: fbafc3e6 Merge tag 'for_linus' of git://git.kernel.org..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=14c1f31ae80000
kernel config: https://syzkaller.appspot.com/x/.config?x=e1e118a9228c45d7
dashboard link: https://syzkaller.appspot.com/bug?extid=d6cd076b385aefcb6b16
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=17377bbee80000
dashboard link: https://syzkaller.appspot.com/bug?extid=d6cd076b385aefcb6b16
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
Hillf Danton
Dec 28, 2023, 6:37:15 AM12/28/23
to syzbot, linux-...@vger.kernel.org, syzkall...@googlegroups.com
On Tue, 26 Dec 2023 14:54:27 -0800
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14125c81e80000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
--- x/net/bluetooth/hci_core.c
+++ y/net/bluetooth/hci_core.c
@@ -3235,9 +3235,12 @@ void hci_send_acl(struct hci_chan *chan,
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
--- x/net/bluetooth/hci_core.c
+++ y/net/bluetooth/hci_core.c
BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags);
+ if (!mutex_trylock(&hdev->req_lock))
+ return;
hci_queue_acl(chan, &chan->data_q, skb, flags);
queue_work(hdev->workqueue, &hdev->tx_work);
+ mutex_unlock(&hdev->req_lock);
syzbot
Dec 28, 2023, 6:58:05 AM12/28/23
to hda...@sina.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-and-tested-by: syzbot+d6cd07...@syzkaller.appspotmail.com
Tested on:
commit: f5837722 Merge tag 'mm-hotfixes-stable-2023-12-27-15-0..
kernel config: https://syzkaller.appspot.com/x/.config?x=da1c95d4e55dda83
Note: testing is done by a robot and is best-effort only.
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-and-tested-by: syzbot+d6cd07...@syzkaller.appspotmail.com
Tested on:
commit: f5837722 Merge tag 'mm-hotfixes-stable-2023-12-27-15-0..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=12fc9ba5e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=da1c95d4e55dda83
dashboard link: https://syzkaller.appspot.com/bug?extid=d6cd076b385aefcb6b16
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=15177855e80000
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
Note: testing is done by a robot and is best-effort only.
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