watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.2.41:5488] Modules linked in: irq event stamp: 11017213 hardirqs last enabled at (11017212): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11017213): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1037 softirqs last enabled at (2150): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (2150): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (2150): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (2191): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (2191): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (2191): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 5488 Comm: syz.2.41 Not tainted 6.12.0-rc1-syzkaller-00163-g4073213488be #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5829 Code: 2b 00 74 08 4c 89 f7 e8 fa 46 8e 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc900000075e0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92000000ec8 RCX: 6b0b74e89f413700 RDX: dffffc0000000000 RSI: ffffffff8c0adc40 RDI: ffffffff8c60fbe0 RBP: ffffc90000007728 R08: ffffffff942c5807 R09: 1ffffffff2858b00 R10: dffffc0000000000 R11: fffffbfff2858b01 R12: 1ffff92000000ec4 R13: dffffc0000000000 R14: ffffc90000007640 R15: 0000000000000246 FS: 00007fbd2dee06c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32919ff8 CR3: 000000002ff48000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] ip6_finish_output2+0x77d/0x1730 net/ipv6/ip6_output.c:126 ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:226 NF_HOOK include/linux/netfilter.h:314 [inline] ndisc_send_skb+0xab2/0x1380 net/ipv6/ndisc.c:511 addrconf_rs_timer+0x371/0x670 net/ipv6/addrconf.c:4042 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1794 expire_timers kernel/time/timer.c:1845 [inline] __run_timers kernel/time/timer.c:2419 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 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+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 5e 81 2f f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 13 20 94 f5 65 8b 05 04 c4 34 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc900092472a0 EFLAGS: 00000206 RAX: 6b0b74e89f413700 RBX: 1ffff92001248e58 RCX: ffffffff8170c42a RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001 RBP: ffffc90009247338 R08: ffffffff942c5807 R09: 1ffffffff2858b00 R10: dffffc0000000000 R11: fffffbfff2858b01 R12: dffffc0000000000 R13: 1ffff92001248e54 R14: ffffc900092472c0 R15: 0000000000000246 rcu_report_qs_rsp+0xad/0x1b0 kernel/rcu/tree.c:2271 rcu_report_unblock_qs_rnp kernel/rcu/tree.c:2376 [inline] rcu_preempt_deferred_qs_irqrestore+0x9f8/0xc70 kernel/rcu/tree_plugin.h:568 rcu_read_unlock_special+0x497/0x570 kernel/rcu/tree_plugin.h:692 __rcu_read_unlock+0xa1/0x110 kernel/rcu/tree_plugin.h:437 rcu_read_unlock include/linux/rcupdate.h:882 [inline] pte_unmap include/linux/pgtable.h:115 [inline] __text_poke+0xafd/0xd30 arch/x86/kernel/alternative.c:1960 text_poke arch/x86/kernel/alternative.c:1984 [inline] text_poke_bp_batch+0x59c/0xb30 arch/x86/kernel/alternative.c:2317 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 tracepoint_add_func+0x953/0x9e0 kernel/tracepoint.c:361 tracepoint_probe_register_prio kernel/tracepoint.c:511 [inline] tracepoint_probe_register+0x105/0x160 kernel/tracepoint.c:531 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x478/0x930 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x243/0x2e0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10357 perf_try_init_event+0x146/0x810 kernel/events/core.c:11891 perf_init_event kernel/events/core.c:11977 [inline] perf_event_alloc+0x135f/0x2310 kernel/events/core.c:12259 __do_sys_perf_event_open kernel/events/core.c:12766 [inline] __se_sys_perf_event_open+0xb1f/0x3870 kernel/events/core.c:12657 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbd2d17dff9 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:00007fbd2dee0038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fbd2d335f80 RCX: 00007fbd2d17dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240 RBP: 00007fbd2d1f0296 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fbd2d335f80 R15: 00007ffdd7d1fcb8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5486 Comm: syz.4.40 Not tainted 6.12.0-rc1-syzkaller-00163-g4073213488be #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:timekeeping_debug_get_ns kernel/time/timekeeping.c:277 [inline] RIP: 0010:timekeeping_get_ns+0x2c0/0x420 kernel/time/timekeeping.c:401 Code: 42 0f b6 04 30 84 c0 0f 85 0e 01 00 00 8b 1b bf 40 00 00 00 89 de e8 cf 5f 12 00 48 83 fb 3f 0f 87 13 01 00 00 e8 80 5b 12 00 <89> d9 49 d3 ef 4c 89 f8 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d RSP: 0018:ffffc90000a186b0 EFLAGS: 00000006 RAX: ffffffff818287f0 RBX: 0000000000000018 RCX: ffff888026a6bc00 RDX: 0000000000010100 RSI: 0000000000000018 RDI: 0000000000000040 RBP: ffffffffffffffff R08: ffffffff818287e1 R09: 1ffffffff2039c8d R10: dffffc0000000000 R11: ffffffff8135ce40 R12: fffffffffe6dd9a9 R13: 0000000001922656 R14: dffffc0000000000 R15: 00314f27467a176e FS: 00007ff94b7ac6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555a17d5c8 CR3: 000000006681a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ktime_get+0x89/0xb0 kernel/time/timekeeping.c:850 clockevents_program_event+0xe6/0x350 kernel/time/clockevents.c:326 hrtimer_interrupt+0x54a/0x990 kernel/time/hrtimer.c:1830 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:get_random_u32+0x725/0xab0 drivers/char/random.c:553 Code: 40 d5 6f 8c 48 c7 c6 60 d6 6f 8c e8 c5 3c 09 fc 90 0f 0b 90 90 49 bd 00 00 00 00 00 fc ff df 48 8b 5c 24 10 90 e9 af fd ff ff <48> 8d 8c 24 60 01 00 00 80 e1 07 80 c1 03 38 c1 0f 8c 7f f9 ff ff RSP: 0018:ffffc90000a18980 EFLAGS: 00000202 RAX: 0000000000000004 RBX: 1ffff9200014315c RCX: ffff888026a6bc00 RDX: 0000000000000100 RSI: 00000000000000c8 RDI: 0000000000000014 RBP: ffffc90000a18b60 R08: ffffffff8180f2e5 R09: 1ffffffff2858b1c R10: dffffc0000000000 R11: fffffbfff2858b1d R12: ffff888065355400 R13: ffff888065355410 R14: ffff888065355410 R15: dffffc0000000000 __get_random_u32_below+0x14/0x90 drivers/char/random.c:567 get_random_u32_below include/linux/random.h:63 [inline] garp_join_timer_arm net/802/garp.c:411 [inline] garp_join_timer+0xd5/0x120 net/802/garp.c:425 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1794 expire_timers kernel/time/timer.c:1845 [inline] __run_timers kernel/time/timer.c:2419 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2042 [inline] RIP: 0010:vprintk_emit+0x700/0xa10 kernel/printk/printk.c:2406 Code: 00 e8 e4 c7 20 00 4c 8d bc 24 a0 00 00 00 4d 85 e4 75 07 e8 d2 c7 20 00 eb 06 e8 cb c7 20 00 fb 49 bc 00 00 00 00 00 fc ff df <48> c7 c7 c0 33 81 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 RSP: 0018:ffffc90009126f80 EFLAGS: 00000246 RAX: ffffffff81741ba5 RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc900096eb000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90009127090 R08: ffffffff81741b7e R09: 1ffffffff2858b04 R10: dffffc0000000000 R11: fffffbfff2858b05 R12: dffffc0000000000 R13: 1ffff92001224df4 R14: ffffffff817419e0 R15: ffffc90009127020 _printk+0xd5/0x120 kernel/printk/printk.c:2432 validate_nla lib/nlattr.c:414 [inline] __nla_validate_parse+0x1af9/0x3090 lib/nlattr.c:635 __nla_parse+0x40/0x60 lib/nlattr.c:732 __nlmsg_parse include/net/netlink.h:761 [inline] genl_family_rcv_msg_attrs_parse+0x1d1/0x290 net/netlink/genetlink.c:945 genl_family_rcv_msg_doit net/netlink/genetlink.c:1093 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x802/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2602 ___sys_sendmsg net/socket.c:2656 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2685 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff94a97dff9 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:00007ff94b7ac038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ff94ab35f80 RCX: 00007ff94a97dff9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 000000000000000e RBP: 00007ff94a9f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff94ab35f80 R15: 00007ffccee9ecb8