watchdog: BUG: soft lockup - CPU#0 stuck for 120s! [syz.5.157:6914] Modules linked in: irq event stamp: 14490335 hardirqs last enabled at (14490334): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (14490335): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (14280064): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (14280064): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (14280064): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (14280067): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (14280067): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (14280067): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6914 Comm: syz.5.157 Not tainted 6.16.0-rc2-syzkaller-gd4adf1c9ee77 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__bpf_prog_run include/linux/filter.h:718 [inline] RIP: 0010:bpf_prog_run include/linux/filter.h:725 [inline] RIP: 0010:bpf_prog_run_array include/linux/bpf.h:2235 [inline] RIP: 0010:trace_call_bpf+0x313/0x850 kernel/trace/bpf_trace.c:146 Code: 00 00 e8 40 cd f4 ff 4c 8d 63 30 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 2d 4c 58 00 <48> 83 c3 48 4d 8b 1c 24 48 8b 7c 24 28 48 89 de 41 ff d3 0f 1f 00 RSP: 0018:ffffc900000070c0 EFLAGS: 00000246 RAX: 1ffff92000640006 RBX: ffffc90003200000 RCX: dffffc0000000000 RDX: 0000000000000100 RSI: 00000000000002bf RDI: ffffffff8d9d36b6 RBP: ffffc900000071b8 R08: ffffc9000000714f R09: 0000000000000000 R10: ffffc90000007140 R11: fffff52000000e2a R12: ffffc90003200030 R13: ffff88806023da18 R14: ffff88806023da28 R15: 0000000000000001 FS: 00007f47d316b6c0(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558d5641ea08 CR3: 00000000275cc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000602 Call Trace: perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10866 do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] perf_trace_lock_acquire+0x335/0x410 include/trace/events/lock.h:24 __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x311/0x360 kernel/locking/lockdep.c:5834 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xc2/0x2390 arch/x86/kernel/unwind_orc.c:479 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 __netdev_alloc_skb+0x108/0x970 net/core/skbuff.c:734 netdev_alloc_skb include/linux/skbuff.h:3414 [inline] dev_alloc_skb include/linux/skbuff.h:3427 [inline] __ieee80211_beacon_get+0xe32/0x1630 net/mac80211/tx.c:5458 ieee80211_beacon_get_tim+0xb4/0x2b0 net/mac80211/tx.c:5580 ieee80211_beacon_get include/net/mac80211.h:5638 [inline] mac80211_hwsim_beacon_tx+0x3ce/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2319 __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+0x52c/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_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:rcu_read_unlock_special+0x87/0x4c0 kernel/rcu/tree_plugin.h:694 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 b2 15 f5 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc90002e57a20 EFLAGS: 00000206 RAX: a52809f35441ba00 RBX: 1ffff920005caf4c RCX: a52809f35441ba00 RDX: 0000000000000006 RSI: ffffffff8d9820ce RDI: ffffffff8be28b80 RBP: ffffc90002e57b10 R08: ffffffff8fa10df7 R09: 1ffffffff1f421be R10: dffffc0000000000 R11: fffffbfff1f421bf R12: ffffffff8e144100 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x84/0xe0 kernel/rcu/tree_plugin.h:438 percpu_ref_get include/linux/percpu-refcount.h:222 [inline] obj_cgroup_get include/linux/memcontrol.h:770 [inline] refill_obj_stock+0x254/0x850 mm/memcontrol.c:3045 obj_cgroup_charge_account+0x116/0x660 mm/memcontrol.c:3108 __memcg_slab_post_alloc_hook+0x3e6/0x7f0 mm/memcontrol.c:3192 memcg_slab_post_alloc_hook mm/slub.c:2180 [inline] slab_post_alloc_hook mm/slub.c:4158 [inline] slab_alloc_node mm/slub.c:4197 [inline] kmem_cache_alloc_noprof+0x2bf/0x3c0 mm/slub.c:4204 alloc_empty_file+0x55/0x1d0 fs/file_table.c:234 alloc_file fs/file_table.c:351 [inline] alloc_file_pseudo+0x13d/0x210 fs/file_table.c:380 sock_alloc_file+0xb8/0x2e0 net/socket.c:470 sock_map_fd net/socket.c:500 [inline] __sys_socket+0x13d/0x1b0 net/socket.c:1692 __do_sys_socket net/socket.c:1697 [inline] __se_sys_socket net/socket.c:1695 [inline] __x64_sys_socket+0x7a/0x90 net/socket.c:1695 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: 0033:0x7f47d238e929 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:00007f47d316b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f47d25b6160 RCX: 00007f47d238e929 RDX: 0000000000000084 RSI: 0000000000000005 RDI: 0000000000000002 RBP: 00007f47d2410b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f47d25b6160 R15: 00007fff2fff0cc8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6804 Comm: syz.6.138 Not tainted 6.16.0-rc2-syzkaller-gd4adf1c9ee77 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:perf_trace_buf_alloc+0xff/0x2a0 kernel/trace/trace_event_perf.c:415 Code: e8 56 95 f6 ff 49 bd 00 00 00 00 00 fc ff df 4d 8d bf 60 19 9e 92 4e 8d 24 e5 60 7c ba 8d 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 e7 e8 37 14 5a 00 4c 89 f0 48 c1 e8 03 4d 03 3c 24 42 RSP: 0000:ffffc90000a082e0 EFLAGS: 00000046 RAX: 1ffffffff1b74f8d RBX: 000000000000002c RCX: ffff88807e95bc00 RDX: 0000000000010100 RSI: 0000000000000001 RDI: 0000000000000008 RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000001 R10: ffffc90000a08590 R11: fffff520001410b4 R12: ffffffff8dba7c68 R13: dffffc0000000000 R14: ffffc90000a08380 R15: ffffffff929e1ab0 FS: 0000000000000000(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4d490da040 CR3: 000000000df38000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] perf_trace_lock_acquire+0x196/0x410 include/trace/events/lock.h:24 __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x311/0x360 kernel/locking/lockdep.c:5834 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162 debug_object_deactivate+0x9a/0x250 lib/debugobjects.c:873 debug_hrtimer_deactivate kernel/time/hrtimer.c:450 [inline] debug_deactivate+0x1d/0x200 kernel/time/hrtimer.c:490 __run_hrtimer kernel/time/hrtimer.c:1729 [inline] __hrtimer_run_queues+0x2b0/0xc60 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+0x10b/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:trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:lock_release+0x44/0x3e0 kernel/locking/lockdep.c:5882 Code: 8b 05 60 ad fe 10 48 89 44 24 28 0f 1f 44 00 00 65 8b 05 63 ad fe 10 83 f8 08 0f 83 9a 02 00 00 89 c0 48 0f a3 05 0c cb 02 0e <73> 16 e8 55 e0 08 00 84 c0 75 0d f6 05 99 b8 ec 0d 01 0f 84 ad 02 RSP: 0000:ffffc90000a08990 EFLAGS: 00000297 RAX: 0000000000000001 RBX: ffffffff8ae639d6 RCX: ffff88807e95bc00 RDX: 0000000000000100 RSI: ffffffff8ae639d6 RDI: ffffffff8e13eda0 RBP: ffff88805e38e780 R08: ffff88807e95bc00 R09: 0000000000000002 R10: 0000000000000004 R11: 0000000000000100 R12: ffff88806b92a500 R13: ffffffff8ae639d6 R14: ffffffff8e13eda0 R15: ffff888058b5d3d0 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] __ieee80211_beacon_get+0x459/0x1630 net/mac80211/tx.c:5519 ieee80211_beacon_get_tim+0xb4/0x2b0 net/mac80211/tx.c:5580 ieee80211_beacon_get include/net/mac80211.h:5638 [inline] mac80211_hwsim_beacon_tx+0x3ce/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2319 __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+0x52c/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:_compound_head include/linux/page-flags.h:282 [inline] RIP: 0010:PageSlab include/linux/page-flags.h:1085 [inline] RIP: 0010:page_table_check_clear+0x96/0x700 mm/page_table_check.c:74 Code: 20 49 83 c7 08 4c 89 fb 48 c1 eb 03 48 b8 00 00 00 00 00 fc ff df 80 3c 03 00 74 08 4c 89 ff e8 90 e2 f4 ff 4d 01 e5 4d 8b 27 <4c> 89 e6 48 83 e6 01 31 ff e8 4c 68 91 ff 4c 89 e0 48 83 e0 01 4c RSP: 0000:ffffc90004b0f350 EFLAGS: 00000282 RAX: dffffc0000000000 RBX: 1ffffd4000208ad1 RCX: dffffc0000000000 RDX: ffff88807e95bc00 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff822f12ba R10: ffffc90004b0f080 R11: ffffffffa0201a54 R12: 0000000000000000 R13: ffffea0001045680 R14: 0000000000000001 R15: ffffea0001045688 ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline] get_and_clear_full_ptes include/linux/pgtable.h:714 [inline] zap_present_folio_ptes mm/memory.c:1505 [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+0x3249/0x41c0 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: 0033:0x7fc6c0d8e929 Code: Unable to access opcode bytes at 0x7fc6c0d8e8ff. RSP: 002b:00007fc6c1bbc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: fffffffffffffff5 RBX: 00007fc6c0fb6080 RCX: 00007fc6c0d8e929 RDX: 0000000000000048 RSI: 0000200000000080 RDI: 0000000000000005 RBP: 00007fc6c0e10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fc6c0fb6080 R15: 00007fff65dcdbf8