watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.1.38:6094] Modules linked in: irq event stamp: 10587531 hardirqs last enabled at (10587530): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (10587531): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (10235892): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (10235892): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (10235892): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (10235895): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (10235895): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (10235895): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6094 Comm: syz.1.38 Not tainted 6.15.0-syzkaller-ga298bbab903e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:unwind_next_frame+0x7be/0x2390 arch/x86/kernel/unwind_orc.c:521 Code: 08 48 89 df e8 b3 28 b1 00 48 8b 3b 48 85 ff 0f 84 d3 0d 00 00 48 83 c7 38 e8 0e 28 00 00 49 89 c4 48 8b 34 24 e9 a9 02 00 00 <49> 8d 5e 40 48 89 d8 48 c1 e8 03 80 3c 28 00 74 11 48 89 df e8 79 RSP: 0018:ffffc900000074d8 EFLAGS: 00000246 RAX: ffffc900000075dd RBX: 0000000000000004 RCX: ffffffff8fbdadf4 RDX: ffffffff903d82ec RSI: ffffffff903d82f0 RDI: ffffffff8be282e0 RBP: dffffc0000000000 R08: 0000000000000009 R09: ffffffff81729de5 R10: ffffc900000070c8 R11: fffff52000000e1b R12: ffffffff903d82f1 R13: ffffc900000075f8 R14: ffffc900000075a8 R15: ffffc900000075e0 FS: 00007f1aaa1806c0(0000) GS:ffff888125c52000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001140 CR3: 0000000034614000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4148 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_node_noprof+0x1bb/0x3c0 mm/slub.c:4249 kmalloc_reserve+0xbd/0x290 net/core/skbuff.c:579 __alloc_skb+0x142/0x2d0 net/core/skbuff.c:670 alloc_skb include/linux/skbuff.h:1336 [inline] ndisc_alloc_skb+0x9f/0x480 net/ipv6/ndisc.c:423 ndisc_send_rs+0x2b5/0x630 net/ipv6/ndisc.c:707 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4041 call_timer_fn+0x17b/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 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:format_decode+0x9a0/0xe30 lib/vsprintf.c:2705 Code: e9 55 fa ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 72 fa ff ff 4c 89 e7 e8 0f ae c1 f6 48 ba 00 00 00 00 00 fc ff df e9 5b fa ff ff <89> e9 80 e1 07 38 c1 0f 8c 66 fa ff ff 48 89 ef e8 fb ac c1 f6 48 RSP: 0018:ffffc9000b2ded10 EFLAGS: 00000206 RAX: 0000000000000005 RBX: 000000000000006c RCX: 0000000000080000 RDX: dffffc0000000000 RSI: 000000000000228c RDI: 000000000000228d RBP: ffffffff8b8b8129 R08: ffff888027248000 R09: 0000000000000002 R10: 0000000000000025 R11: 0000000000000002 R12: ffffc9000b2dedb9 R13: ffffc9000b2dedb8 R14: 0000000000000006 R15: ffffffff8b8b8129 vsnprintf+0x102/0xf00 lib/vsprintf.c:2817 sprintf+0xd9/0x120 lib/vsprintf.c:3037 print_time kernel/printk/printk.c:1381 [inline] info_print_prefix+0x155/0x310 kernel/printk/printk.c:1407 record_print_text+0x154/0x430 kernel/printk/printk.c:1456 printk_get_next_message+0x26d/0x7b0 kernel/printk/printk.c:3024 console_emit_next_record kernel/printk/printk.c:3092 [inline] console_flush_all+0x4ca/0xc40 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0xc4/0x270 kernel/printk/printk.c:3325 vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450 _printk+0xcf/0x120 kernel/printk/printk.c:2475 raw_sendmsg+0x1504/0x18b0 net/ipv4/raw.c:522 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x19c/0x270 net/socket.c:727 ____sys_sendmsg+0x505/0x830 net/socket.c:2566 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2655 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: 0033:0x7f1aa938e929 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:00007f1aaa180038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1aa95b5fa0 RCX: 00007f1aa938e929 RDX: 00000000000000c0 RSI: 0000200000001140 RDI: 0000000000000009 RBP: 00007f1aa9410b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1aa95b5fa0 R15: 00007ffcf963fa48 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6100 Comm: syz.3.40 Not tainted 6.15.0-syzkaller-ga298bbab903e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:perf_swevent_event+0x24/0x5e0 kernel/events/core.c:10417 Code: 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec a0 00 00 00 49 89 ce 48 89 54 24 18 <49> 89 f4 49 89 ff 65 48 8b 05 0e 7c ac 10 48 89 84 24 80 00 00 00 RSP: 0018:ffffc90000a07860 EFLAGS: 00000086 RAX: ffffffff81f052fd RBX: 0000000000000000 RCX: ffff8880b8732ab0 RDX: ffffc90000a079c0 RSI: 0000000000000001 RDI: ffff88807c2e2bc0 RBP: ffffc90000a07930 R08: ffffc90000a079d7 R09: 0000000000000000 R10: ffffc90000a079c8 R11: fffff52000140f3b R12: ffff88807c2e2bc0 R13: ffffc90000a079c8 R14: ffff8880b8732ab0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125d52000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f49407b6038 CR3: 00000000798e2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: perf_tp_event+0x4f6/0x1380 kernel/events/core.c:10947 perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:10871 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x2f8/0x3b0 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5882 seqcount_lockdep_reader_access+0xdc/0x1c0 include/linux/seqlock.h:73 ktime_get+0x3e/0x1f0 kernel/time/timekeeping.c:776 hrtimer_forward_now include/linux/hrtimer.h:366 [inline] perf_swevent_hrtimer+0x442/0x550 kernel/events/core.c:11722 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x4dd/0xc60 kernel/time/hrtimer.c:1825 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline] __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:debug_smp_processor_id+0x12/0x20 lib/smp_processor_id.c:60 Code: cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 c7 c7 e0 82 e2 8b 48 c7 c6 20 83 e2 8b 1c 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000a08438 EFLAGS: 00000202 RAX: ffffffff81c9c649 RBX: 000000000000002c RCX: ffff888028ec5a00 RDX: 0000000000000100 RSI: ffffffff8be28320 RDI: ffffffff8be282e0 RBP: 0000000000000001 R08: ffffc90004f1f218 R09: 0000000000000000 R10: ffffc90000a08718 R11: fffff520001410e5 R12: 1ffff92000141098 R13: dffffc0000000000 R14: ffffc90000a084e0 R15: 00000000000000a8 perf_trace_buf_alloc+0xb9/0x2a0 kernel/trace/trace_event_perf.c:415 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x18d/0x3b0 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5882 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] class_rcu_destructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0x19a9/0x2390 arch/x86/kernel/unwind_orc.c:680 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4745 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] consume_skb+0x9e/0xf0 net/core/skbuff.c:1398 mac80211_hwsim_beacon_tx+0x3f0/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2323 __iterate_interfaces+0x2a8/0x590 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:797 mac80211_hwsim_beacon+0xbb/0x1c0 drivers/net/wireless/virtual/mac80211_hwsim.c:2353 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x529/0xc60 kernel/time/hrtimer.c:1825 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842 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:is_zero_pfn include/linux/pgtable.h:1590 [inline] RIP: 0010:is_zero_page include/linux/mm.h:1896 [inline] RIP: 0010:is_zero_folio include/linux/mm.h:1907 [inline] RIP: 0010:__folio_rmap_sanity_checks+0xb8/0x700 include/linux/rmap.h:414 Code: 0b 49 c1 fc 06 48 c7 c0 10 1a a1 8f 48 c1 e8 03 42 80 3c 30 00 74 0c 48 c7 c7 10 1a a1 8f e8 0f 47 11 00 4c 8b 2d 88 93 8e 0d <4c> 89 e7 4c 89 ee e8 9d d7 ad ff 4d 39 ec 0f 84 27 03 00 00 e8 2f RSP: 0018:ffffc90004f1f2d0 EFLAGS: 00000246 RAX: 1ffffffff1f42342 RBX: ffffea0000449600 RCX: ffff888028ec5a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f4000000 RBP: 0000000000000001 R08: ffffea0000449607 R09: 1ffffd40000892c0 R10: dffffc0000000000 R11: fffff940000892c1 R12: 0000000000011258 R13: 0000000000012a0e R14: dffffc0000000000 R15: ffffea0000449600 __folio_remove_rmap mm/rmap.c:1694 [inline] folio_remove_rmap_ptes+0x3b/0xaf0 mm/rmap.c:1804 zap_present_folio_ptes mm/memory.c:1529 [inline] zap_present_ptes mm/memory.c:1590 [inline] do_zap_pte_range mm/memory.c:1691 [inline] zap_pte_range mm/memory.c:1735 [inline] zap_pmd_range mm/memory.c:1827 [inline] zap_pud_range mm/memory.c:1856 [inline] zap_p4d_range mm/memory.c:1877 [inline] unmap_page_range+0x1e59/0x41c0 mm/memory.c:1898 unmap_single_vma mm/memory.c:1941 [inline] unmap_vmas+0x399/0x580 mm/memory.c:1985 exit_mmap+0x248/0xb50 mm/mmap.c:1284 __mmput+0x118/0x420 kernel/fork.c:1121 exit_mm+0x1da/0x2c0 kernel/exit.c:581 do_exit+0x640/0x22e0 kernel/exit.c:943 do_group_exit+0x21c/0x2d0 kernel/exit.c:1104 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+0x75/0x110 kernel/entry/common.c:111 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f75e878e929 Code: Unable to access opcode bytes at 0x7f75e878e8ff. RSP: 002b:00007f75e96d5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: 0000000000000000 RBX: 00007f75e89b5fa0 RCX: 00007f75e878e929 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000000000000001e RBP: 00007f75e8810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f75e89b5fa0 R15: 00007ffc0684fcb8