watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:32669] Modules linked in: irq event stamp: 2103235 hardirqs last enabled at (2103234): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (2103234): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:184 hardirqs last disabled at (2103235): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2928): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (2928): [] rxrpc_connect_call+0x1cd4/0x46a0 net/rxrpc/conn_client.c:719 softirqs last disabled at (3031): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (3031): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 32669 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:184 Code: 48 c7 c0 88 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 2f 48 83 3d 7c 31 d8 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb b2 e8 fb eb e6 f8 eb c0 0f 0b 0f 0b 48 c7 c7 88 RSP: 0018:ffff8880ba007cb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3051 RBX: 0000000000000286 RCX: 1ffff1100a51995a RDX: dffffc0000000000 RSI: ffff8880528ccab0 RDI: 0000000000000286 RBP: ffff8880a8e3c728 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880a8e3c728 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fd85024d700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa6c4176d04 CR3: 000000003b493000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:384 [inline] skb_dequeue+0x125/0x180 net/core/skbuff.c:2839 garp_queue_xmit net/802/garp.c:274 [inline] garp_join_timer+0xc3/0xf0 net/802/garp.c:426 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:26 [inline] RIP: 0010:__orc_find+0x6f/0xf0 arch/x86/kernel/unwind_orc.c:48 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 RSP: 0018:ffff888054506fa0 EFLAGS: 00000a03 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff16ebf58 RBX: ffffffff8b75fac4 RCX: ffffffff866e9010 RDX: 0000000000000000 RSI: ffffffff8bf55498 RDI: ffffffff8b75fac4 RBP: ffffffff8b75fac4 R08: 0000000000000000 R09: ffffffff8bf55498 R10: ffff888054507177 R11: 0000000000074071 R12: ffffffff8b75fac4 R13: ffffffff8b75fac4 R14: ffffffff8b75fac4 R15: dffffc0000000000 orc_find arch/x86/kernel/unwind_orc.c:159 [inline] unwind_next_frame+0x339/0x1400 arch/x86/kernel/unwind_orc.c:422 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 kmem_cache_alloc_node_trace+0x151/0x3b0 mm/slab.c:3668 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] alloc_skb_with_frags+0x92/0x570 net/core/skbuff.c:5333 sock_alloc_send_pskb+0x6e1/0x830 net/core/sock.c:2108 rxrpc_send_data+0x1927/0x3c60 net/rxrpc/sendmsg.c:337 rxrpc_do_sendmsg+0xc7c/0x1d50 net/rxrpc/sendmsg.c:739 rxrpc_sendmsg+0x416/0x600 net/rxrpc/af_rxrpc.c:593 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x3b3/0x8e0 net/socket.c:2227 __sys_sendmmsg+0x195/0x470 net/socket.c:2322 __do_sys_sendmmsg net/socket.c:2351 [inline] __se_sys_sendmmsg net/socket.c:2348 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2348 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd8518d8109 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd85024d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007fd8519eaf60 RCX: 00007fd8518d8109 RDX: 0000000000000001 RSI: 0000000020001900 RDI: 0000000000000008 RBP: 00007fd8519320ed R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc3205279f R14: 00007fd85024d300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8154 Comm: kworker/u4:9 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet RIP: 0010:perf_trace_lock+0x329/0x4b0 include/trace/events/lock.h:39 Code: 00 41 b8 01 00 00 00 4c 89 d7 53 e8 81 14 2d 00 58 5a 48 b8 00 00 00 00 00 fc ff df 48 03 85 48 ff ff ff 48 c7 00 00 00 00 00 40 08 00 00 00 00 48 8b 45 d0 65 48 2b 04 25 28 00 00 00 75 70 RSP: 0018:ffff888052b2fa28 EFLAGS: 00000086 RAX: ffffed100a565f4b RBX: ffffe8ffffd91908 RCX: 1ffffffff139f5e1 RDX: 1ffffd1ffffb2321 RSI: ffffffff83771e31 RDI: ffffffff89f6d3e0 RBP: ffff888052b2fb00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffffffff89f6d360 R13: ffffffff89f85fa0 R14: ffffffff814a7850 R15: ffff888052b2fad8 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c011a07468 CR3: 00000000a5216000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x4e8/0x8b0 kernel/locking/lockdep.c:3926 rcu_lock_release include/linux/rcupdate.h:247 [inline] rcu_read_unlock include/linux/rcupdate.h:681 [inline] batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:954 [inline] batadv_iv_ogm_schedule_buff+0x7ae/0x1340 net/batman-adv/bat_iv_ogm.c:1008 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1052 [inline] batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1045 [inline] batadv_iv_send_outstanding_bat_ogm_packet+0x68c/0x7a0 net/batman-adv/bat_iv_ogm.c:1871 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415