BUG: soft lockup in br_forward_delay_timer

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
android-5-15	BUG: soft lockup in br_forward_delay_timer_expired	1	1	309d	309d	0/2	auto-obsoleted due to no activity on 2025/03/26 03:08
linux-4.14	BUG: soft lockup in br_forward_delay_timer_expired	1	1	1356d	1356d	0/1	auto-closed as invalid on 2022/06/13 01:08
android-54	BUG: soft lockup in br_forward_delay_timer_expired	1	1	274d	274d	0/2	auto-obsoleted due to no activity on 2025/04/30 09:57

watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.0:8016] Modules linked in: irq event stamp: 5217563 hardirqs last enabled at (5217562): [<ffffffff81006743>] trace_hardirqs_on_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:41 hardirqs last disabled at (5217563): [<ffffffff8100675f>] trace_hardirqs_off_thunk+0x1a/0x1c arch/x86/entry/thunk_64.S:42 softirqs last enabled at (0): [<ffffffff814503b2>] copy_process+0x1822/0x69e0 kernel/fork.c:2015 softirqs last disabled at (379): [<ffffffff81474a2b>] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (379): [<ffffffff81474a2b>] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 CPU: 0 PID: 8016 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:stack_depot_save+0x0/0x450 lib/stackdepot.c:222 Code: 07 00 00 00 00 c3 48 89 0c d5 e0 69 ca 8b b8 01 00 00 00 48 c7 07 00 00 00 00 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 20 65 48 8b 04 25 RSP: 0018:ffff88802d2098f8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000009 RBX: ffff88802904cae0 RCX: ffffffff87e00262 RDX: 0000000000000a20 RSI: 000000000000000a RDI: ffff88802d209900 RBP: ffff88802d209b08 R08: 0000000000000006 R09: ffff8880725b8910 R10: fffffbfff146dba0 R11: ffffffff8a36dd07 R12: 0000000000000a20 R13: ffff88802904ca00 R14: 0000000000000000 R15: ffff88807ab28000 FS: 00007fa5c6d92700(0000) GS:ffff88802d200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000232fca0 CR3: 000000006c65f000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc mm/kasan/common.c:510 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:483 kasan_slab_alloc+0xf/0x20 mm/kasan/common.c:518 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slab.c:3262 [inline] kmem_cache_alloc_node+0x138/0x740 mm/slab.c:3574 __alloc_skb+0xd5/0x5e0 net/core/skbuff.c:197 alloc_skb include/linux/skbuff.h:1049 [inline] nlmsg_new include/net/netlink.h:888 [inline] br_ifinfo_notify+0xa6/0x1d0 net/bridge/br_netlink.c:490 br_forward_delay_timer_expired+0x11e/0x410 net/bridge/br_stp_timer.c:98 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 </IRQ> RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline] RIP: 0010:generic_exec_single+0x33a/0x4c0 kernel/smp.c:155 Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 68 01 00 00 48 83 3d 2e 81 e9 07 00 0f 84 e0 00 00 00 e8 eb 2a 0b 00 48 89 df 57 9d <0f> 1f 44 00 00 45 31 ed e9 39 fe ff ff e8 d4 2a 0b 00 0f 0b e9 23 RSP: 0018:ffff8880725c7a80 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: 0000000000000216 RCX: ffffc9000409c000 RDX: 000000000000131a RSI: ffffffff8169b335 RDI: 0000000000000216 RBP: ffff8880725c7ab0 R08: 1ffffffff15d29b8 R09: fffffbfff15d29b9 R10: fffffbfff15d29b8 R11: ffffffff8ae94dc7 R12: 0000000000000200 R13: ffff8880725c7b00 R14: ffff8880725c7bd0 R15: ffffffff818bd170 smp_call_function_single+0x17c/0x480 kernel/smp.c:308 task_function_call+0xe9/0x180 kernel/events/core.c:114 perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746 __do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543 __se_sys_perf_event_open kernel/events/core.c:11151 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a759 Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa5c6d91c88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000071bf00 RCX: 000000000045a759 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000002001d000 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fa5c6d926d4 R13: 00000000004aec2b R14: 00000000006f1ca8 R15: 00000000ffffffff Sending NMI from CPU 0 to CPUs 1-3: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 NMI backtrace for cpu 3 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60 NMI backtrace for cpu 2 CPU: 2 PID: 8013 Comm: syz-executor.1 Not tainted 5.4.0-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:ipip_tunnel_xmit+0x0/0x500 net/ipv4/ipip.c:273 Code: bc f2 ff ff ff e9 b6 fe ff ff 48 8b 7c 24 10 e8 b6 c0 1c fb e9 1a fe ff ff e8 6c 42 b0 fa 48 8b 7c 24 10 e8 a2 c0 1c fb eb ae <55> 48 89 e5 41 57 41 56 41 55 49 89 f5 41 54 49 89 fc 53 48 83 ec RSP: 0018:ffff88802d409550 EFLAGS: 00010246 RAX: 1ffffffff117aac4 RBX: dffffc0000000000 RCX: ffffffff8390583c RDX: 0000000000000100 RSI: ffff88801d0b4000 RDI: ffff888014d34dc0 RBP: ffff88802d4095c0 R08: ffff888072444040 R09: ffffed1005a87045 R10: ffffed1005a87044 R11: ffff88802d438223 R12: ffff888014d34dc0 R13: ffffffff88bd5600 R14: ffff88801d0b4000 R15: ffff88801d0b4000 FS: 00007fa252f8b700(0000) GS:ffff88802d400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000191fd0 CR3: 0000000071dd6000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> __dev_queue_xmit+0x2b05/0x35c0 net/core/dev.c:4013 dev_queue_xmit+0x18/0x20 net/core/dev.c:4046 neigh_direct_output+0x16/0x20 net/core/neighbour.c:1530 neigh_output include/net/neighbour.h:511 [inline] ip6_finish_output2+0x109a/0x25c0 net/ipv6/ip6_output.c:116 __ip6_finish_output+0x444/0xaa0 net/ipv6/ip6_output.c:142 ip6_finish_output+0x38/0x1f0 net/ipv6/ip6_output.c:152 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip6_output+0x25e/0x880 net/ipv6/ip6_output.c:175 dst_output include/net/dst.h:436 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ndisc_send_skb+0xf1f/0x1490 net/ipv6/ndisc.c:505 ndisc_send_rs+0x134/0x720 net/ipv6/ndisc.c:699 addrconf_rs_timer+0x30f/0x6e0 net/ipv6/addrconf.c:3879 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 </IRQ> RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x4f/0x80 kernel/locking/spinlock.c:199 Code: c0 68 34 53 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d 12 2a 99 01 00 74 20 fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 e7 6b 96 f9 65 8b 05 18 14 48 78 85 c0 74 06 41 RSP: 0018:ffff88807244f8d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff12a668d RBX: ffff888072444040 RCX: 0000000000000006 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff8880724448d4 RBP: ffff88807244f8e0 R08: 1ffffffff15d29b8 R09: fffffbfff15d29b9 R10: fffffbfff15d29b8 R11: ffffffff8ae94dc7 R12: ffff88802d437380 R13: ffff88802c4bc3c0 R14: ffff888026762240 R15: 0000000000000000 finish_lock_switch kernel/sched/core.c:3124 [inline] finish_task_switch+0x147/0x750 kernel/sched/core.c:3224 context_switch kernel/sched/core.c:3388 [inline] __schedule+0x8e9/0x1f30 kernel/sched/core.c:4081 preempt_schedule_common+0x4f/0xe0 kernel/sched/core.c:4236 preempt_schedule+0x4b/0x60 kernel/sched/core.c:4261 ___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50 smp_call_function_single+0x410/0x480 kernel/smp.c:313 task_function_call+0xe9/0x180 kernel/events/core.c:114 perf_install_in_context+0x308/0x5a0 kernel/events/core.c:2746 __do_sys_perf_event_open+0x1cbc/0x2c70 kernel/events/core.c:11543 __se_sys_perf_event_open kernel/events/core.c:11151 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:11151 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a759 Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa252f8ac88 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000071bf00 RCX: 000000000045a759 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000880 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fa252f8b6d4 R13: 00000000004aec2b R14: 00000000006f1ca8 R15: 00000000ffffffff