BUG: soft lockup in sys_recvmmsg

Status: auto-obsoleted due to no activity on 2024/10/23 09:30
Reported-by: syzbot+fb9bd648865106ac5555@syzkaller.appspotmail.com
First crash: 828d, last: 735d
▶ ▼ Similar bugs (11)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sys_recvmmsg (3) prio:low net 1 283 2h47m 954d 0/29 upstream: reported on 2023/12/19 09:31
upstream INFO: rcu detected stall in sys_recvmmsg mptcp 1 syz, C done 52 1641d 1773d 20/29 fixed on 2022/03/08 16:11
linux-6.1 INFO: rcu detected stall in sys_recvmmsg (3) 1 16 216d 611d 0/3 auto-obsoleted due to no activity on 2026/04/05 10:37
linux-4.19 INFO: rcu detected stall in sys_recvmmsg 1 syz, C error 1 1315d 1315d 0/1 upstream: reported C repro on 2022/12/23 04:58
linux-5.15 INFO: rcu detected stall in sys_recvmmsg missing-backport origin:upstream 1 syz, C done 82 1d22h 1212d 0/3 upstream: reported C repro on 2023/04/06 01:32
linux-6.1 INFO: rcu detected stall in sys_recvmmsg (4) 1 3 5d16h 99d 0/3 upstream: reported on 2026/04/22 14:30
linux-6.6 INFO: rcu detected stall in sys_recvmmsg 1 8 149d 377d 0/2 auto-obsoleted due to no activity on 2026/06/11 04:39
linux-6.1 INFO: rcu detected stall in sys_recvmmsg (2) 1 5 715d 847d 0/3 auto-obsoleted due to no activity on 2024/11/22 11:58
linux-6.6 INFO: rcu detected stall in sys_recvmmsg (2) 1 3 1d06h 26d 0/2 upstream: reported on 2026/07/04 16:20
linux-6.1 INFO: rcu detected stall in sys_recvmmsg 1 5 1092d 1224d 0/3 auto-obsoleted due to no activity on 2023/11/11 06:06
upstream INFO: rcu detected stall in sys_recvmmsg (2) net 1 4 1402d 1432d 0/29 auto-obsoleted due to no activity on 2023/01/03 09:53

Sample crash report:
RBP: 00007f42360f7e68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f4236219038 R15: 00007ffe81a594a8
 </TASK>
watchdog: BUG: soft lockup - CPU#1 stuck for 226s! [syz.0.1310:5417]
Modules linked in:
CPU: 1 PID: 5417 Comm: syz.0.1310 Not tainted 5.15.151-syzkaller-00059-g5356d2f17edf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:kvm_wait+0x147/0x180 arch/x86/kernel/kvm.c:918
Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d 2b 02 f3 03 fb f4 <e9> 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c
RSP: 0018:ffffc90000c27420 EFLAGS: 00000246
RAX: 0000000000000003 RBX: 1ffff92000184e88 RCX: ffffffff815504ef
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff88810e226d28
RBP: ffffc90000c274d0 R08: dffffc0000000000 R09: ffffed1021c44da6
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88810e226d28 R14: 0000000000000003 R15: 1ffff92000184e8c
FS:  00007f4234ce96c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4234ce8fa8 CR3: 000000011907a000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x6bc/0xc40 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178
 __sock_map_delete net/core/sock_map.c:416 [inline]
 sock_map_delete_elem+0x99/0x130 net/core/sock_map.c:448
 bpf_prog_2c29ac5cdc6b1842+0x3a/0x26c
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1917
 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x1f3/0x220 mm/slub.c:4569
 sk_psock_free_link include/linux/skmsg.h:420 [inline]
 sock_map_del_link net/core/sock_map.c:160 [inline]
 sock_map_unref+0x352/0x4d0 net/core/sock_map.c:182
 __sock_map_delete net/core/sock_map.c:422 [inline]
 sock_map_delete_elem+0xc1/0x130 net/core/sock_map.c:448
 bpf_prog_2c29ac5cdc6b1842+0x3a/0x26c
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1917
 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x1f3/0x220 mm/slub.c:4569
 ___sys_recvmsg+0x210/0x690 net/socket.c:2693
 do_recvmmsg+0x36b/0x8b0 net/socket.c:2786
 __sys_recvmmsg net/socket.c:2865 [inline]
 __do_sys_recvmmsg net/socket.c:2888 [inline]
 __se_sys_recvmmsg net/socket.c:2881 [inline]
 __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2881
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f4236088f19
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:00007f4234ce9048 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f4236219038 RCX: 00007f4236088f19
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f42360f7e68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f4236219038 R15: 00007ffe81a594a8
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.15.151-syzkaller-00059-g5356d2f17edf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:kvm_wait+0x147/0x180 arch/x86/kernel/kvm.c:918
Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d 2b 02 f3 03 fb f4 <e9> 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c
RSP: 0018:ffffc90000147240 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff92000028e4c RCX: 1ffffffff0d1aa9c
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff8881f7038ad4
RBP: ffffc900001472f0 R08: dffffc0000000000 R09: ffffed103ee0715b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7038ad4 R14: 0000000000000001 R15: 1ffff92000028e50
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020002000 CR3: 000000012f8fe000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_node kernel/locking/qspinlock_paravirt.h:325 [inline]
 __pv_queued_spin_lock_slowpath+0x41b/0xc40 kernel/locking/qspinlock.c:473
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178
 __sock_map_delete net/core/sock_map.c:416 [inline]
 sock_map_delete_elem+0x99/0x130 net/core/sock_map.c:448
 bpf_prog_2c29ac5cdc6b1842+0x3a/0x26c
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1917
 __bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x1f3/0x220 mm/slub.c:4569
 kfree_const+0x39/0x40 mm/util.c:44
 kernfs_put+0x1f6/0x520 fs/kernfs/dir.c:538
 sysfs_put include/linux/sysfs.h:641 [inline]
 __kobject_del+0x10f/0x300 lib/kobject.c:629
 kobject_del+0x45/0x60 lib/kobject.c:651
 device_del+0xcec/0xe90 drivers/base/core.c:3604
 device_unregister+0x15/0x40 drivers/base/core.c:3625
 usb_remove_ep_devs+0x50/0x80 drivers/usb/core/endpoint.c:188
 remove_intf_ep_devs drivers/usb/core/message.c:1262 [inline]
 usb_disable_device+0x30c/0x720 drivers/usb/core/message.c:1413
 usb_disconnect+0x32a/0x890 drivers/usb/core/hub.c:2240
 hub_port_connect drivers/usb/core/hub.c:5342 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5643 [inline]
 port_event drivers/usb/core/hub.c:5793 [inline]
 hub_event+0x1d42/0x4770 drivers/usb/core/hub.c:5875
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/07/25 09:25 android13-5.15-lts 5356d2f17edf d1a1b0ca .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_recvmmsg
2024/05/30 02:49 android13-5.15-lts 424f92bcbe8f 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_recvmmsg
2024/05/21 14:54 android13-5.15-lts 5d96939590c0 4c0d3ee3 .config console log report info ci2-android-5-15 BUG: soft lockup in sys_recvmmsg
2024/05/19 08:08 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_recvmmsg
2024/04/23 17:25 android13-5.15-lts ad06eaf051cd 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in sys_recvmmsg
* Struck through repros no longer work on HEAD.