watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.4.2624:9668] Modules linked in: CPU: 1 PID: 9668 Comm: syz.4.2624 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:in_irqentry_text kernel/stacktrace.c:384 [inline] RIP: 0010:filter_irq_stacks+0x6d/0xa0 kernel/stacktrace.c:400 Code: 80 3c 08 00 74 08 48 89 df e8 2f 0e 53 00 4b 8b 04 fe 48 c7 c1 90 01 e0 84 48 39 c8 72 0c 48 c7 c1 10 0e e0 84 48 39 c8 72 11 <4c> 39 e8 72 b4 48 c7 c1 bf 05 00 85 48 39 c8 73 a8 41 ff c7 eb 08 RSP: 0018:ffffc900001cff20 EFLAGS: 00000287 RAX: ffffffff81b21add RBX: ffffc900001cffe0 RCX: ffffffff84e00190 RDX: 0000000000000800 RSI: 000000000000002f RDI: ffffc900001cffc0 RBP: ffffc900001cff48 R08: ffffffff817e5d78 R09: 000000000000002e R10: ffffc900001cff30 R11: dffffc0000000001 R12: 000000000000002f R13: ffffffff85000000 R14: ffffc900001cffc0 R15: 0000000000000004 FS: 00007f73d837d6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32b1fffc CR3: 0000000144aa4000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __stack_depot_save+0x34/0x470 lib/stackdepot.c:291 kasan_save_stack mm/kasan/common.c:39 [inline] kasan_set_track+0x5d/0x70 mm/kasan/common.c:45 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749 slab_free mm/slub.c:3519 [inline] kmem_cache_free+0x116/0x2e0 mm/slub.c:3535 kfree_skbmem+0x104/0x170 __kfree_skb net/core/skbuff.c:758 [inline] consume_skb+0xb4/0x250 net/core/skbuff.c:930 netlink_broadcast_filtered+0x10f4/0x1220 net/netlink/af_netlink.c:1540 netlink_broadcast net/netlink/af_netlink.c:1562 [inline] nlmsg_multicast include/net/netlink.h:1033 [inline] nlmsg_notify+0x101/0x1c0 net/netlink/af_netlink.c:2548 rtnl_notify+0x9c/0xd0 net/core/rtnetlink.c:730 __neigh_notify+0xcc/0x120 net/core/neighbour.c:3386 neigh_cleanup_and_release+0x2c/0x1b0 net/core/neighbour.c:101 neigh_del net/core/neighbour.c:197 [inline] neigh_remove_one+0x3a6/0x430 net/core/neighbour.c:218 neigh_forced_gc net/core/neighbour.c:251 [inline] neigh_alloc net/core/neighbour.c:429 [inline] ___neigh_create+0x474/0x1bd0 net/core/neighbour.c:591 __neigh_create+0x32/0x40 net/core/neighbour.c:679 ip6_finish_output2+0x9ee/0x16e0 net/ipv6/ip6_output.c:123 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:197 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:207 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:230 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ndisc_send_skb+0x73e/0xc90 net/ipv6/ndisc.c:509 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3977 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1427 expire_timers kernel/time/timer.c:1472 [inline] __run_timers+0x72a/0xa10 kernel/time/timer.c:1743 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1756 __do_softirq+0x26d/0x5bf kernel/softirq.c:565 invoke_softirq kernel/softirq.c:425 [inline] __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:finish_task_switch+0x185/0x7b0 kernel/sched/core.c:5024 Code: ce 00 00 00 4c 89 e7 e8 b9 84 7c 03 fb 49 8d 9d 38 0b 00 00 48 89 d8 48 c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 0f b6 04 30 <84> c0 0f 85 7e 02 00 00 80 63 03 bf 4c 8b 7d d0 48 8b 5d c8 0f 1f RSP: 0018:ffffc90000cbf280 EFLAGS: 00000a02 RAX: 0000000000000000 RBX: ffff88811153edf8 RCX: 0000000000000002 RDX: 0000000040000002 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc90000cbf2d0 R08: ffffffff8191d4d9 R09: fffffbfff0e0cc23 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f71378c0 R13: ffff88811153e2c0 R14: dffffc0000000000 R15: ffff8881f7138408 context_switch kernel/sched/core.c:5155 [inline] __schedule+0xcd4/0x1590 kernel/sched/core.c:6512 preempt_schedule_irq+0xc7/0x140 kernel/sched/core.c:6916 irqentry_exit_cond_resched+0x2a/0x30 kernel/entry/common.c:392 irqentry_exit+0x30/0x40 kernel/entry/common.c:426 sysvec_apic_timer_interrupt+0x55/0xc0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x2a0 mm/kasan/generic.c:189 Code: 00 00 00 00 fc ff df 4f 8d 34 1a 4d 89 f5 4d 29 cd 49 83 fd 10 7f 26 4d 85 ed 0f 84 44 01 00 00 49 f7 d2 4d 01 e2 41 80 39 00 <0f> 85 d2 01 00 00 49 ff c1 49 ff c2 75 ee e9 27 01 00 00 45 89 cf RSP: 0018:ffffc90000cbf578 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 000000000001ffff RCX: ffffffff8165411b RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff872bea20 RBP: ffffc90000cbf5a0 R08: dffffc0000000000 R09: fffffbfff0e57d44 R10: ffffffffffffffff R11: dffffc0000000001 R12: 1ffffffff0e57d44 R13: 0000000000000001 R14: fffffbfff0e57d45 R15: dffffc0000000000 __kasan_check_read+0x11/0x20 mm/kasan/shadow.c:31 instrument_atomic_read include/linux/instrumented.h:71 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] freezing include/linux/freezer.h:45 [inline] try_to_freeze_unsafe include/linux/freezer.h:66 [inline] try_to_freeze include/linux/freezer.h:75 [inline] freezer_count include/linux/freezer.h:141 [inline] freezable_schedule include/linux/freezer.h:198 [inline] futex_wait_queue_me+0x33b/0x760 kernel/futex/core.c:2872 futex_wait+0x2e6/0x9a0 kernel/futex/core.c:2975 do_futex+0x1367/0x37f0 kernel/futex/core.c:3995 __do_sys_futex kernel/futex/core.c:4072 [inline] __se_sys_futex+0x37b/0x3e0 kernel/futex/core.c:4053 __x64_sys_futex+0xe5/0x100 kernel/futex/core.c:4053 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: 0033:0x7f73d90fbe99 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:00007f73d837d0f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f73d928bf68 RCX: 00007f73d90fbe99 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f73d928bf68 RBP: 00007f73d928bf60 R08: 00007f73d837d6c0 R09: 00007f73d837d6c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f73d928bf6c R13: 000000000000000b R14: 00007ffe2fe05aa0 R15: 00007ffe2fe05b88 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9655 Comm: syz.3.2613 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:check_preemption_disabled+0x6/0x110 lib/smp_processor_id.c:13 Code: c3 cc cc cc 55 48 89 e5 48 c7 c7 80 12 83 85 48 c7 c6 c0 12 83 85 e8 09 00 00 00 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 <41> 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 45 d8 RSP: 0018:ffffc90000007328 EFLAGS: 00000046 RAX: ffffffff817e1c5e RBX: ffffffff8602f9b8 RCX: ffff888113760000 RDX: 0000000000010501 RSI: ffffffff858312c0 RDI: ffffffff85831280 RBP: ffffc90000007330 R08: ffffffff87292000 R09: ffffffff87292008 R10: ffffffff87292018 R11: ffffffff87292010 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f93785c46c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32e1bff8 CR3: 000000011a6f1000 CR4: 00000000003506b0 DR0: 0000000020000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: debug_smp_processor_id+0x17/0x20 lib/smp_processor_id.c:60 irq_work_run+0x13/0xf0 kernel/irq_work.c:186 __sysvec_irq_work+0x63/0x1b0 arch/x86/kernel/irq_work.c:22 sysvec_irq_work+0x41/0xb0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1b/0x20 arch/x86/include/asm/idtentry.h:664 RIP: 0010:queued_write_lock_slowpath+0x14b/0x440 kernel/locking/qrwlock.c:78 Code: 4c 89 ff be 04 00 00 00 e8 12 6c 5d 00 f0 41 81 0f 00 01 00 00 48 8b 5c 24 08 43 0f b6 04 2e 84 c0 0f 85 94 00 00 00 41 8b 07 <3d> 00 01 00 00 74 27 f3 90 43 0f b6 04 2e 84 c0 74 eb 44 89 f9 80 RSP: 0018:ffffc90000007460 EFLAGS: 00000246 RAX: 00000000000001ff RBX: 1ffff92000000e96 RCX: ffffffff815510ee RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff86f92788 RBP: ffffc90000007510 R08: dffffc0000000000 R09: fffffbfff0df24f2 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900000074b0 R13: dffffc0000000000 R14: 1ffffffff0df24f1 R15: ffffffff86f92788 queued_write_lock include/asm-generic/qrwlock.h:97 [inline] __raw_write_lock_bh include/linux/rwlock_api_smp.h:204 [inline] _raw_write_lock_bh+0x10a/0x170 kernel/locking/spinlock.c:324 neigh_forced_gc net/core/neighbour.c:236 [inline] neigh_alloc net/core/neighbour.c:429 [inline] ___neigh_create+0x1f3/0x1bd0 net/core/neighbour.c:591 __neigh_create+0x32/0x40 net/core/neighbour.c:679 ip6_finish_output2+0x9ee/0x16e0 net/ipv6/ip6_output.c:123 __ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:197 ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:207 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:230 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ndisc_send_skb+0x73e/0xc90 net/ipv6/ndisc.c:509 ndisc_send_rs+0x532/0x6a0 net/ipv6/ndisc.c:703 addrconf_rs_timer+0x2d1/0x600 net/ipv6/addrconf.c:3977 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1427 expire_timers kernel/time/timer.c:1472 [inline] __run_timers+0x72a/0xa10 kernel/time/timer.c:1743 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1756 __do_softirq+0x26d/0x5bf kernel/softirq.c:565 invoke_softirq kernel/softirq.c:425 [inline] __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__do_sys_ioctl fs/ioctl.c:873 [inline] RIP: 0010:__se_sys_ioctl+0x9b/0x190 fs/ioctl.c:860 Code: 0b ac b0 ff 48 c7 c0 f7 ff ff ff e9 f9 00 00 00 4c 89 ef 44 89 fe 4d 89 f7 44 89 f2 4c 89 65 c8 4c 89 e1 e8 97 0f 00 00 89 c3 fd fd ff ff 89 c6 e8 89 af b0 ff 81 fb fd fd ff ff 0f 85 88 00 RSP: 0018:ffffc9000101feb8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc90006f04000 RSI: 000000000000001f RDI: 0000000000000020 RBP: ffffc9000101fef0 R08: ffffffff81bfb700 R09: ffffed1021227083 R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000200006c0 R13: ffff88811f35fb00 R14: 0000000000005452 R15: 0000000000005452 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860 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: 0033:0x7f9379342e99 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:00007f93785c4048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f93794d2f60 RCX: 00007f9379342e99 RDX: 00000000200006c0 RSI: 0000000000005452 RDI: 0000000000000006 RBP: 00007f93793b1e5d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f93794d2f60 R15: 00007fff86393798