watchdog: BUG: soft lockup - CPU#0 stuck for 122s! [syz.8.500:7802] Modules linked in: irq event stamp: 13275753 hardirqs last enabled at (13275752): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (13275753): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (501274): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (501274): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (501274): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 softirqs last disabled at (501277): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (501277): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (501277): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 7802 Comm: syz.8.500 Not tainted 6.14.0-syzkaller-ga27a97f71394 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:dst_init+0x0/0x490 net/core/dst.c:50 Code: 00 e8 84 b7 f3 ff 31 c0 5b c3 cc cc cc cc 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 18 45 89 c6 41 RSP: 0018:ffffc90000007820 EFLAGS: 00000246 RAX: ffffffff89efdcc8 RBX: ffff88805ea92000 RCX: 00000000ffffffff RDX: ffff88805d50c000 RSI: ffff888033e98ac0 RDI: ffff88805ea92000 RBP: 0000000000000400 R08: 0000000000000000 R09: 0000000000000000 R10: ffff88805ea92000 R11: 0000000000000000 R12: ffff88805d50c000 R13: ffffffff8aca0c70 R14: 00000000ffffffff R15: ffff888033e98ac0 FS: 0000000000000000(0000) GS:ffff888124f97000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000017c0 CR3: 0000000079bf6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: dst_alloc+0x14f/0x190 net/core/dst.c:93 ip6_dst_alloc net/ipv6/route.c:342 [inline] icmp6_dst_alloc+0x77/0x420 net/ipv6/route.c:3280 ndisc_send_skb+0x3fd/0x1560 net/ipv6/ndisc.c:493 addrconf_rs_timer+0x380/0x680 net/ipv6/addrconf.c:4033 call_timer_fn+0x189/0x650 kernel/time/timer.c:1789 expire_timers kernel/time/timer.c:1840 [inline] __run_timers kernel/time/timer.c:2414 [inline] __run_timer_base+0x66e/0x8e0 kernel/time/timer.c:2426 run_timer_base kernel/time/timer.c:2435 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2445 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xf9/0x1c0 kernel/sched/core.c:7090 Code: 89 fe 49 c1 ee 03 eb 0d 48 f7 03 08 00 00 00 0f 84 89 00 00 00 bf 01 00 00 00 e8 a2 35 5f f5 e8 ad f5 99 f5 fb bf 01 00 00 00 32 a5 ff ff 43 80 3c 26 00 74 08 4c 89 ff e8 13 2c fc f5 48 c7 RSP: 0018:ffffc90004446fa0 EFLAGS: 00000282 RAX: f22603f6cd6ff200 RBX: 1ffff92000888dfc RCX: 0000000000000007 RDX: 0000000000000007 RSI: ffffffff8e69b349 RDI: 0000000000000001 RBP: ffffc90004447060 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: dffffc0000000000 R13: 1ffff92000888df4 R14: 1ffff92000888df8 R15: ffffc90004446fc0 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:pmd_pfn arch/x86/include/asm/pgtable.h:274 [inline] RIP: 0010:pte_lockptr include/linux/mm.h:3037 [inline] RIP: 0010:__pte_offset_map_lock+0x17e/0x310 mm/pgtable-generic.c:401 Code: 0f b6 eb 49 f7 dd 4d 31 f5 49 81 e6 80 00 00 00 48 bb 00 00 e0 ff ff ff 0f 00 48 0f 44 5c 24 30 31 ff 4c 89 f6 e8 02 39 aa ff <4c> 21 eb 48 c1 eb 06 48 b8 28 00 00 00 00 ea ff ff 48 01 c3 48 89 RSP: 0018:ffffc90004447120 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 000ffffffffff000 RCX: ffff888031923c00 RDX: 1ffff92000888e10 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004447210 R08: ffffffff8219235e R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff92000888e2c R13: 000000004a37f067 R14: 0000000000000000 R15: 1ffff92000888e34 pte_offset_map_lock include/linux/mm.h:3132 [inline] zap_pte_range mm/memory.c:1717 [inline] zap_pmd_range mm/memory.c:1823 [inline] zap_pud_range mm/memory.c:1852 [inline] zap_p4d_range mm/memory.c:1873 [inline] unmap_page_range+0x3aec/0x44d0 mm/memory.c:1894 unmap_vmas+0x3ce/0x5f0 mm/memory.c:1984 exit_mmap+0x2bc/0xde0 mm/mmap.c:1284 __mmput+0x115/0x420 kernel/fork.c:1379 exit_mm+0x221/0x310 kernel/exit.c:589 do_exit+0x994/0x27f0 kernel/exit.c:940 do_group_exit+0x207/0x2c0 kernel/exit.c:1102 get_signal+0x1696/0x1730 kernel/signal.c:3034 arch_do_signal_or_restart+0x98/0x840 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:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f156e58e169 Code: Unable to access opcode bytes at 0x7f156e58e13f. RSP: 002b:00007f156f490038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: 0000000000000000 RBX: 00007f156e7b5fa0 RCX: 00007f156e58e169 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 00007f156e610a68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000080 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f156e7b5fa0 R15: 00007ffcd842da08 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 7816 Comm: syz.6.504 Not tainted 6.14.0-syzkaller-ga27a97f71394 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:do_perf_trace_lock include/trace/events/lock.h:50 [inline] RIP: 0010:perf_trace_lock+0xb3/0x4a0 include/trace/events/lock.h:50 Code: 21 08 04 f3 f3 f3 48 89 f8 48 c1 e8 03 48 89 44 24 28 42 80 3c 20 00 74 05 e8 19 62 8f 00 48 c7 84 24 80 00 00 00 00 00 00 00 <48> 89 d8 48 c1 e8 03 48 89 44 24 40 42 0f b6 04 20 84 c0 0f 85 18 RSP: 0018:ffffc90000a084a0 EFLAGS: 00000046 RAX: 1ffff920001410a4 RBX: ffffc90000a08540 RCX: 1ffff920001410a0 RDX: ffffffff81b0ec4e RSI: ffffffff9a77f6c8 RDI: ffffc90000a08520 RBP: ffffc90000a085a8 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffffff8ec0d280 R14: ffffffff9a77f6c8 R15: ffffffff93689020 FS: 00007f325e69b6c0(0000) GS:ffff888125097000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc950ecf4c CR3: 000000004b342000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x3b4/0x3e0 kernel/locking/lockdep.c:5877 seqcount_lockdep_reader_access+0x111/0x230 include/linux/seqlock.h:71 ktime_get+0x3e/0x200 kernel/time/timekeeping.c:764 clockevents_program_event+0xe6/0x350 kernel/time/clockevents.c:326 hrtimer_interrupt+0x5b7/0xa40 kernel/time/hrtimer.c:1930 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x70 kernel/kcov.c:213 Code: 00 00 00 48 8b 3d d4 1c b6 0c 48 89 de 5b e9 63 b4 5e 00 0f 1f 00 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 90 68 93 65 8b 15 98 38 a5 11 81 e2 RSP: 0018:ffffc90000a08978 EFLAGS: 00000a02 RAX: f3f3f3f3f3f3f3f3 RBX: ffffc90000a089e0 RCX: ffffffff81cb48ac RDX: 0000000000000000 RSI: ffff888065f6a9d0 RDI: ffff88807eb50e40 RBP: ffffc90000a08b10 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: ffff888065f6a9d0 R13: 1ffff92000141138 R14: dffffc0000000000 R15: ffffffff93689020 ieee80211_get_buffered_bc+0x95/0x900 net/mac80211/tx.c:5892 mac80211_hwsim_beacon_tx+0x448/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2320 __iterate_interfaces+0x297/0x570 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:797 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2347 __run_hrtimer kernel/time/hrtimer.c:1791 [inline] __hrtimer_run_queues+0x5a6/0xd40 kernel/time/hrtimer.c:1855 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1872 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xf9/0x1c0 kernel/sched/core.c:7090 Code: 89 fe 49 c1 ee 03 eb 0d 48 f7 03 08 00 00 00 0f 84 89 00 00 00 bf 01 00 00 00 e8 a2 35 5f f5 e8 ad f5 99 f5 fb bf 01 00 00 00 32 a5 ff ff 43 80 3c 26 00 74 08 4c 89 ff e8 13 2c fc f5 48 c7 RSP: 0018:ffffc900044e7ae0 EFLAGS: 00000286 RAX: 9cdb0b53608c7700 RBX: 1ffff9200089cf64 RCX: ffffffff81cb48ac RDX: 0000000000000000 RSI: ffffffff8e69b349 RDI: 0000000000000001 RBP: ffffc900044e7ba0 R08: ffffffff905fcf77 R09: 1ffffffff20bf9ee R10: dffffc0000000000 R11: fffffbfff20bf9ef R12: dffffc0000000000 R13: 1ffff9200089cf5c R14: 1ffff9200089cf60 R15: ffffc900044e7b00 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_release+0x244/0x3e0 arch/x86/include/asm/irqflags.h:-1 Code: 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 0f 85 c3 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 65 48 8b 03 <48> 3b 44 24 28 0f 85 82 01 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e RSP: 0018:ffffc900044e7c68 EFLAGS: 00000206 RAX: 9cdb0b53608c7700 RBX: ffffffff93689020 RCX: 0000000000000000 RDX: ffffffff81f6775e RSI: ffffffff8e4fc3ef RDI: ffffffff8ca1b0e0 RBP: ffff88801cbda8f0 R08: ffffc900044e7c67 R09: 1ffff9200089cf8c R10: dffffc0000000000 R11: fffff5200089cf8d R12: 0000000000000000 R13: ffff88801cbd9e00 R14: 0000000000000283 R15: ffff888027f22e60 up_read+0x16/0x20 kernel/locking/rwsem.c:1619 __do_sys_perf_event_open kernel/events/core.c:13436 [inline] __se_sys_perf_event_open+0x2e9e/0x34b0 kernel/events/core.c:13081 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f325d78e169 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:00007f325e69b038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f325d9b6080 RCX: 00007f325d78e169 RDX: affffff7ffffffff RSI: 0000000000000000 RDI: 0000200000000180 RBP: 00007f325d810a68 R08: 0000000000000003 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f325d9b6080 R15: 00007ffd7ef2df78