BUG: soft lockup in sys

Kernel	Title	Repro	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in sys_sendto (6) net		1	162d	162d	0/26	closed as invalid on 2024/02/01 10:31
linux-6.1	INFO: rcu detected stall in sys_sendto origin:upstream	C	1	26d	98d	0/3	upstream: reported C repro on 2024/01/26 15:19
upstream	INFO: rcu detected stall in sys_sendto (5) perf		7	824d	945d	0/26	closed as invalid on 2022/02/08 10:00

watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.5:18415] Modules linked in: CPU: 0 PID: 18415 Comm: syz-executor.5 Tainted: G W 5.10.187-syzkaller-00057-g8a427269c016 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline] RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] RIP: 0010:kvm_wait+0xfc/0x150 arch/x86/kernel/kvm.c:926 Code: 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d e5 46 d5 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d d6 46 d5 03 fb f4 <4c> 89 7c 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 49 c7 04 RSP: 0018:ffffc90005816fc0 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff92000b02dfc RCX: 1ffffffff0cd8ddf RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffc90005817000 RBP: ffffc90005817070 R08: dffffc0000000000 R09: ffffed103ee0ae4b R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8881f7057254 R14: 0000000000000001 R15: 0000000000000246 FS: 00007fb3181136c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001a40 CR3: 0000000112b1c000 CR4: 00000000003526b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> </IRQ> pv_wait arch/x86/include/asm/paravirt.h:564 [inline] pv_wait_node kernel/locking/qspinlock_paravirt.h:325 [inline] __pv_queued_spin_lock_slowpath+0x407/0xc70 kernel/locking/qspinlock.c:473 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [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:183 [inline] __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_lock+0x139/0x1b0 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] __dev_xmit_skb net/core/dev.c:3808 [inline] __dev_queue_xmit+0xbc0/0x28e0 net/core/dev.c:4147 dev_queue_xmit+0x17/0x20 net/core/dev.c:4215 neigh_resolve_output+0x6b8/0x760 net/core/neighbour.c:1498 neigh_output include/net/neighbour.h:517 [inline] ip_finish_output2+0xb7a/0xfc0 net/ipv4/ip_output.c:237 __ip_finish_output+0x409/0x740 ip_finish_output+0x34/0x1e0 net/ipv4/ip_output.c:325 NF_HOOK_COND include/linux/netfilter.h:288 [inline] ip_mc_output+0x3d3/0xa30 net/ipv4/ip_output.c:424 dst_output include/net/dst.h:437 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb+0xb0/0x140 net/ipv4/ip_output.c:1590 udp_send_skb+0x9ae/0x12e0 net/ipv4/udp.c:955 udp_sendmsg+0x1ce6/0x2a80 net/ipv4/udp.c:1242 inet_sendmsg+0xa1/0xc0 net/ipv4/af_inet.c:821 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] __sys_sendto+0x545/0x700 net/socket.c:1987 __do_sys_sendto net/socket.c:1999 [inline] __se_sys_sendto net/socket.c:1995 [inline] __x64_sys_sendto+0xe5/0x100 net/socket.c:1995 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7fb319390ae9 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:00007fb3181130c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fb3194aff80 RCX: 00007fb319390ae9 RDX: 0000000000000000 RSI: 0000000020001940 RDI: 0000000000000003 RBP: 00007fb3193dc47a R08: 0000000020001a40 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb3194aff80 R15: 00007fffb3dde4e8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 18403 Comm: syz-executor.0 Tainted: G W 5.10.187-syzkaller-00057-g8a427269c016 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:434 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x5a1/0xc70 kernel/locking/qspinlock.c:508 Code: 85 ba 01 00 00 c6 03 00 48 8b 44 24 28 42 0f b6 04 30 84 c0 0f 85 bf 01 00 00 48 8b 04 24 c6 00 01 bb 00 80 ff ff eb 06 f3 90 <ff> c3 74 50 43 0f b6 44 35 00 84 c0 75 32 41 80 3c 24 00 75 e9 4c RSP: 0018:ffffc9000591ebc0 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 00000000ffffe868 RCX: ffffffff8150a984 RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc9000591eb40 RBP: ffffc9000591ecb0 R08: dffffc0000000000 R09: fffffbfff0d9e02e R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff86cf016c R13: 1ffffffff0d9e02d R14: dffffc0000000000 R15: ffff88823ff52180 FS: 00007fc488c386c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f48d52d8ff8 CR3: 000000011424d000 CR4: 00000000003526a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [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:183 [inline] __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:359 [inline] get_dist_table+0x207/0x2e0 net/sched/sch_netem.c:798 netem_change+0x9d7/0x1fb0 net/sched/sch_netem.c:995 netem_init+0x5b/0xb0 net/sched/sch_netem.c:1075 qdisc_create+0x879/0x12d0 net/sched/sch_api.c:1264 tc_modify_qdisc+0x8a4/0x13f0 rtnetlink_rcv_msg+0x955/0xc50 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2496 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5589 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] netlink_unicast+0x8df/0xac0 net/netlink/af_netlink.c:1348 netlink_sendmsg+0xa46/0xd00 net/netlink/af_netlink.c:1915 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2357 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2411 __sys_sendmsg net/socket.c:2440 [inline] __do_sys_sendmsg net/socket.c:2449 [inline] __se_sys_sendmsg+0x1b1/0x280 net/socket.c:2447 __x64_sys_sendmsg+0x7b/0x90 net/socket.c:2447 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7fc489ed6ae9 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:00007fc488c380c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc489ff6050 RCX: 00007fc489ed6ae9 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000003 RBP: 00007fc489f2247a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fc489ff6050 R15: 00007ffd9ecd20c8

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/08/16 13:10	android13-5.10-lts	8a427269c016	39990d51	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-android-5-10	BUG: soft lockup in sys_sendto
2023/07/10 17:08	android13-5.10-lts	59b65efafe20	d47e94ee	.config	console log	report			info		ci2-android-5-10	BUG: soft lockup in sys_sendto

Crashes (2):

Assets (help?)