syzbot


WARNING in l2cap_chan_send

Status: upstream: reported on 2024/04/14 00:26
Subsystems: bluetooth
[Documentation on labels]
Reported-by: syzbot+b6919040d9958e2fc1ae@syzkaller.appspotmail.com
First crash: 48d, last: 8d10h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bluetooth?] WARNING in l2cap_chan_send 0 (1) 2024/04/14 00:26

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9561 at kernel/workqueue.c:2335 __queue_work+0xc6c/0xef0 kernel/workqueue.c:2334
Modules linked in:
CPU: 0 PID: 9561 Comm: syz-executor.0 Not tainted 6.9.0-rc7-syzkaller-00188-gba16c1cf11c9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__queue_work+0xc6c/0xef0 kernel/workqueue.c:2334
Code: ff e8 a8 38 36 00 90 0f 0b 90 e9 20 fd ff ff e8 9a 38 36 00 eb 13 e8 93 38 36 00 eb 0c e8 8c 38 36 00 eb 05 e8 85 38 36 00 90 <0f> 0b 90 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
RSP: 0018:ffffc9000f0df4c0 EFLAGS: 00010087
RAX: ffffffff815fcefd RBX: ffff88802969da00 RCX: 0000000000040000
RDX: ffffc9000a621000 RSI: 00000000000286b3 RDI: 00000000000286b4
RBP: 0000000000000000 R08: ffffffff815fc3c3 R09: 1ffff1100fb251be
R10: dffffc0000000000 R11: ffffed100fb251bf R12: ffff888062d111c0
R13: dffffc0000000000 R14: ffff888062d11000 R15: 0000000000000008
FS:  00007fe54bea96c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200013c0 CR3: 0000000067cc4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queue_work_on+0x14f/0x250 kernel/workqueue.c:2448
 l2cap_chan_send+0x3d6/0x2680
 l2cap_sock_sendmsg+0x1b4/0x2c0 net/bluetooth/l2cap_sock.c:1128
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmmsg+0x3b2/0x740 net/socket.c:2724
 __do_sys_sendmmsg net/socket.c:2753 [inline]
 __se_sys_sendmmsg net/socket.c:2750 [inline]
 __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2750
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe54b07dd69
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:00007fe54bea90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fe54b1abf80 RCX: 00007fe54b07dd69
RDX: 00000000ffffff80 RSI: 0000000020004100 RDI: 0000000000000004
RBP: 00007fe54b0ca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010040 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fe54b1abf80 R15: 00007fff96ff2c88
 </TASK>

Crashes (8):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/13 07:29 upstream ba16c1cf11c9 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in l2cap_chan_send
2024/05/15 01:59 net aea27a92a41d fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in l2cap_chan_send
2024/05/09 05:57 net 02754103e1f7 20bf80e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in l2cap_chan_send
2024/04/10 00:20 net f99c5f563c17 56086b24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in l2cap_chan_send
2024/05/19 22:15 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in l2cap_chan_send
2024/05/19 16:02 net-next 4b377b4868ef c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in l2cap_chan_send
2024/05/15 02:50 net-next 654de42f3fc6 fdb4c10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in l2cap_chan_send
2024/05/06 07:19 net-next cdc74c9d06e7 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in l2cap_chan_send
* Struck through repros no longer work on HEAD.