watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.2.3:5942] Modules linked in: irq event stamp: 14722069 hardirqs last enabled at (14722068): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (14722069): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (14284076): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (14284076): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (14284076): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (14284079): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (14284079): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (14284079): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 5942 Comm: syz.2.3 Not tainted 6.15.0-syzkaller-g90b83efa6701 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__phys_addr+0x48/0x180 arch/x86/mm/physaddr.c:25 Code: ff ff 7f ff ff ff ff 48 89 de e8 73 f8 4b 00 49 89 de 49 81 ee 00 00 00 80 0f 83 a4 00 00 00 48 c7 c0 28 94 b8 8d 48 c1 e8 03 <42> 80 3c 38 00 74 0c 48 c7 c7 28 94 b8 8d e8 05 11 af 00 48 2b 1d RSP: 0018:ffffc90000a086b8 EFLAGS: 00000a02 RAX: 1ffffffff1b71285 RBX: ffff88802f1e9a00 RCX: ffff8880277fbc00 RDX: 0000000000000100 RSI: ffff88802f1e9a00 RDI: ffffffff7fffffff RBP: 0000000000212110 R08: ffffffff8fa0b1b7 R09: 1ffffffff1f41636 R10: dffffc0000000000 R11: fffffbfff1f41637 R12: ffffea0000000000 R13: 0000000000000000 R14: ffff8880af1e9a00 R15: dffffc0000000000 FS: 00007f24fda016c0(0000) GS:ffff888125d66000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f24fda00f98 CR3: 000000007f7f6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: virt_to_folio include/linux/mm.h:1402 [inline] virt_to_slab mm/slab.h:211 [inline] check_slab_allocation+0x1f/0x130 mm/kasan/common.c:219 kasan_slab_pre_free include/linux/kasan.h:198 [inline] slab_free_hook mm/slub.c:2325 [inline] slab_free mm/slub.c:4642 [inline] kmem_cache_free+0x140/0x400 mm/slub.c:4744 skb_release_data+0x62d/0x7c0 net/core/skbuff.c:1087 skb_release_all net/core/skbuff.c:1152 [inline] __kfree_skb net/core/skbuff.c:1166 [inline] sk_skb_reason_drop+0x127/0x170 net/core/skbuff.c:1204 kfree_skb_reason include/linux/skbuff.h:1275 [inline] kfree_skb include/linux/skbuff.h:1284 [inline] ip6_mc_input+0x9c3/0xbe0 net/ipv6/ip6_input.c:591 NF_HOOK+0x309/0x3a0 include/linux/netfilter.h:317 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0xd3/0x380 net/core/dev.c:6090 process_backlog+0x60e/0x14f0 net/core/dev.c:6442 __napi_poll+0xc7/0x480 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x707/0xe30 net/core/dev.c:7605 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194 Code: 74 05 e8 2b 61 61 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 03 77 2a f6 65 8b 05 0c 86 35 07 85 c0 74 40 48 c7 04 24 0e 36 RSP: 0018:ffffc90004a8fc60 EFLAGS: 00000206 RAX: a74f6d0b0f9c5000 RBX: 0000000000000a06 RCX: a74f6d0b0f9c5000 RDX: 0000000000000006 RSI: ffffffff8d96be0f RDI: 0000000000000001 RBP: ffffc90004a8fcf0 R08: ffffffff8fa0b1b7 R09: 1ffffffff1f41636 R10: dffffc0000000000 R11: fffffbfff1f41637 R12: dffffc0000000000 R13: ffff88807f5cb840 R14: ffff88805b98bc00 R15: 1ffff92000951f8c __do_sys_perf_event_open kernel/events/core.c:13660 [inline] __se_sys_perf_event_open+0x1942/0x1d70 kernel/events/core.c:13301 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f24fcb8e969 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:00007f24fda01038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f24fcdb6080 RCX: 00007f24fcb8e969 RDX: affffff7ffffffff RSI: 0000000000000000 RDI: 0000200000000180 RBP: 00007f24fcc10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f24fcdb6080 R15: 00007ffd91924c38 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 5937 Comm: syz.0.8 Not tainted 6.15.0-syzkaller-g90b83efa6701 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216 Code: 8b 3d 44 29 f9 0b 48 89 de 5b e9 73 66 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 08 a0 9b 92 65 8b 15 28 a5 db 10 81 e2 00 01 ff 00 RSP: 0018:ffffc90000006ea8 EFLAGS: 00000046 RAX: ffffffff81efd932 RBX: 0000000000000001 RCX: 0000000000000100 RDX: ffff88802552da00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff8fa0b1b7 R09: 1ffffffff1f41636 R10: dffffc0000000000 R11: fffffbfff1f41637 R12: 1ffff11004aa5dc5 R13: dffffc0000000000 R14: ffff88802552ee2d R15: dffffc0000000000 FS: 00007fcc3bd136c0(0000) GS:ffff888125c66000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe7711c620 CR3: 000000007bc22000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: get_recursion_context kernel/events/internal.h:220 [inline] perf_swevent_get_recursion_context+0xb2/0x100 kernel/events/core.c:10552 perf_trace_buf_alloc+0x59/0x2a0 kernel/trace/trace_event_perf.c:410 do_perf_trace_preemptirq_template include/trace/events/preemptirq.h:14 [inline] perf_trace_preemptirq_template+0x149/0x340 include/trace/events/preemptirq.h:14 __do_trace_irq_enable include/trace/events/preemptirq.h:40 [inline] trace_irq_enable+0xee/0x110 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:73 irqentry_exit+0x74/0x90 kernel/entry/common.c:310 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210 Code: 89 fb e8 23 00 00 00 48 8b 3d 44 29 f9 0b 48 89 de 5b e9 73 66 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 a0 9b 92 65 8b 15 28 a5 RSP: 0018:ffffc900000070e8 EFLAGS: 00000202 RAX: ffffffff8a1b6fe6 RBX: ffff8880569c0000 RCX: 0000000000000100 RDX: ffff88802552da00 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 1ffff110061cc619 R08: ffffc90000007400 R09: ffffc90000007410 R10: ffffc90000007260 R11: fffff52000000e4e R12: 0000000000000001 R13: 0000000000000003 R14: 1ffff110061cc61b R15: ffff888030e630df lockdep_rtnl_is_held+0xa/0x40 net/core/rtnetlink.c:181 __in6_dev_get include/net/addrconf.h:347 [inline] ip6_ignore_linkdown include/net/addrconf.h:443 [inline] find_match+0xd0/0xc90 net/ipv6/route.c:781 __find_rr_leaf+0x23a/0x6d0 net/ipv6/route.c:869 find_rr_leaf net/ipv6/route.c:890 [inline] rt6_select net/ipv6/route.c:934 [inline] fib6_table_lookup+0x39f/0xa80 net/ipv6/route.c:2232 ip6_pol_route+0x222/0x1180 net/ipv6/route.c:2268 pol_lookup_func include/net/ip6_fib.h:617 [inline] fib6_rule_lookup+0x52f/0x6f0 net/ipv6/fib6_rules.c:120 ip6_route_input_lookup net/ipv6/route.c:2337 [inline] ip6_route_input+0x6ce/0xa50 net/ipv6/route.c:2640 ip6_rcv_finish+0x141/0x2d0 net/ipv6/ip6_input.c:77 NF_HOOK+0x309/0x3a0 include/linux/netfilter.h:317 __netif_receive_skb_one_core net/core/dev.c:5977 [inline] __netif_receive_skb+0xd3/0x380 net/core/dev.c:6090 process_backlog+0x60e/0x14f0 net/core/dev.c:6442 __napi_poll+0xc7/0x480 net/core/dev.c:7414 napi_poll net/core/dev.c:7478 [inline] net_rx_action+0x707/0xe30 net/core/dev.c:7605 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:schedule_debug kernel/sched/core.c:5958 [inline] RIP: 0010:__schedule+0x1a0/0x4d00 kernel/sched/core.c:6678 Code: e8 03 42 80 3c 28 00 74 08 48 89 df e8 e9 b3 be f6 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 d0 b3 be f6 <48> 81 3b 9d 6e ac 57 0f 85 26 18 00 00 83 7c 24 70 00 7f 42 49 8d RSP: 0018:ffffc90004a5f640 EFLAGS: 00010246 RAX: 1ffff9200094b000 RBX: ffffc90004a58000 RCX: 2a0c60bd5df5ba00 RDX: 0000000000000000 RSI: ffffffff8be263a0 RDI: ffffffff8be26360 RBP: ffffc90004a5f850 R08: ffffffff8fa0b1b7 R09: 1ffffffff1f41636 R10: dffffc0000000000 R11: fffffbfff1f41637 R12: ffff8880b863c4c8 R13: dffffc0000000000 R14: ffff88802552da00 R15: ffff888125c66000 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7104 irqentry_exit+0x6f/0x90 kernel/entry/common.c:307 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:its_return_thunk+0x0/0x10 arch/x86/lib/retpoline.S:412 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 4b c7 cc f5 cc RSP: 0018:ffffc90004a5f9c0 EFLAGS: 00000293 RAX: ffffffff8174074b RBX: ffff88805f692800 RCX: ffff88802552da00 RDX: 0000000000000000 RSI: ffffffff8d96be0f RDI: ffff88805f692800 RBP: ffff88805f692800 R08: ffffffff8fa0b1b7 R09: 1ffffffff1f41636 R10: dffffc0000000000 R11: fffffbfff1f41637 R12: ffffea0000000000 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 __phys_addr+0x1b/0x180 arch/x86/mm/physaddr.c:16 virt_to_folio include/linux/mm.h:1402 [inline] virt_to_slab mm/slab.h:211 [inline] qlink_to_cache mm/kasan/quarantine.c:131 [inline] qlist_free_all+0x39/0x140 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4147 [inline] slab_alloc_node mm/slub.c:4196 [inline] kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4203 taskstats_tgid_alloc kernel/taskstats.c:576 [inline] taskstats_exit+0x14a/0xa30 kernel/taskstats.c:615 do_exit+0x854/0x2550 kernel/exit.c:944 do_group_exit+0x21c/0x2d0 kernel/exit.c:1108 get_signal+0x1286/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] irqentry_exit_to_user_mode+0x81/0x120 kernel/entry/common.c:184 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0033:0x7fcc3af8e969 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:00007fcc3bd130e8 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 00007fcc3b1b5fa8 RCX: 00007fcc3af8e969 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fcc3b1b5fac RBP: 00007fcc3b1b5fa0 R08: 7fffffffffffffff R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 00007fcc3b1b5fac R13: 0000000000000000 R14: 00007ffd74d5d6e0 R15: 00007ffd74d5d7c8