watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.5.37:6282] Modules linked in: irq event stamp: 10160151 hardirqs last enabled at (10160150): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (10160151): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (10012692): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (10012692): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (10012692): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 softirqs last disabled at (10012695): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (10012695): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (10012695): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6282 Comm: syz.5.37 Not tainted 6.14.0-syzkaller-ga1b5bd45d4ee #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:strlen+0x31/0x70 lib/string.c:413 Code: 56 41 54 53 49 89 fe 48 c7 c0 ff ff ff ff 49 bf 00 00 00 00 00 fc ff df 48 89 fb 49 89 c4 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 12 48 ff c3 49 8d 44 24 01 43 80 7c 26 01 00 75 dd eb 13 RSP: 0018:ffffc900000070b8 EFLAGS: 00000a06 RAX: 0000000000000000 RBX: ffffffff8c4bbf22 RCX: 0000000000007103 RDX: ffffffff81cef5d9 RSI: ffffffff8ed3dfe0 RDI: ffffffff8c4bbf20 RBP: ffffc900000071e8 R08: ffffffff81cefa2a R09: 0000000000000000 R10: ffffc900000072e0 R11: ffffffffa0001a8c R12: 0000000000000001 R13: ffffffff8ec0d280 R14: ffffffff8c4bbf20 R15: dffffc0000000000 FS: 00007fd2353376c0(0000) GS:ffff888124f99000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2b62a653b0 CR3: 000000006d538000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _Z16__fortify_strlenPKcU25pass_dynamic_object_size1 include/linux/fortify-string.h:268 [inline] trace_event_get_offsets_lock include/trace/events/lock.h:50 [inline] do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x10c/0x4a0 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+0x3b4/0x3e0 kernel/locking/lockdep.c:5877 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] trace_call_bpf+0x60b/0x8a0 kernel/trace/bpf_trace.c:148 perf_trace_run_bpf_submit+0x82/0x180 kernel/events/core.c:10807 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x39c/0x4a0 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+0x3b4/0x3e0 kernel/locking/lockdep.c:5877 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+0x1a9f/0x23b0 arch/x86/kernel/unwind_orc.c:680 arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2389 [inline] slab_free mm/slub.c:4646 [inline] kmem_cache_free+0x197/0x410 mm/slub.c:4748 skb_kfree_head net/core/skbuff.c:1056 [inline] skb_free_head net/core/skbuff.c:1070 [inline] skb_release_data+0x67a/0x8b0 net/core/skbuff.c:1097 skb_release_all net/core/skbuff.c:1162 [inline] __kfree_skb net/core/skbuff.c:1176 [inline] consume_skb+0x9f/0xf0 net/core/skbuff.c:1408 mac80211_hwsim_beacon_tx+0x3c4/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2317 __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_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:__sanitizer_cov_trace_pc+0x58/0x70 kernel/kcov.c:233 Code: 00 74 2c 8b 91 18 16 00 00 83 fa 02 75 21 48 8b 91 20 16 00 00 48 8b 32 48 8d 7e 01 8b 89 1c 16 00 00 48 39 cf 73 08 48 89 3a <48> 89 44 f2 08 c3 cc cc cc cc 66 66 66 66 66 2e 0f 1f 84 00 00 00 RSP: 0018:ffffc9000474e4d8 EFLAGS: 00000283 RAX: ffffffff81cd3294 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9001b73d000 RSI: 000000000001e067 RDI: 000000000001e068 RBP: 0000000000000000 R08: ffffffff81cd3286 R09: fffffbfff1d7a978 R10: dffffc0000000000 R11: fffffbfff1d7a978 R12: 000000000000002c R13: dffffc0000000000 R14: ffffc9000474e5a0 R15: ffff8880b8632560 perf_trace_buf_alloc+0x154/0x2a0 kernel/trace/trace_event_perf.c:416 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x1ef/0x4a0 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+0x3b4/0x3e0 kernel/locking/lockdep.c:5877 rcu_lock_release include/linux/rcupdate.h:341 [inline] srcu_read_unlock_nmisafe include/linux/srcu.h:465 [inline] console_srcu_read_unlock kernel/printk/printk.c:302 [inline] console_flush_all+0xd5c/0xec0 kernel/printk/printk.c:3252 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0x151/0x3b0 kernel/printk/printk.c:3325 vprintk_emit+0x761/0xa40 kernel/printk/printk.c:2450 _printk+0xd5/0x120 kernel/printk/printk.c:2475 batadv_hardif_enable_interface+0x841/0xa90 net/batman-adv/hard-interface.c:755 batadv_meshif_slave_add+0x7c/0x100 net/batman-adv/mesh-interface.c:858 do_set_master+0x579/0x730 net/core/rtnetlink.c:2946 do_setlink+0x1120/0x4370 net/core/rtnetlink.c:3159 rtnl_changelink net/core/rtnetlink.c:3769 [inline] __rtnl_newlink net/core/rtnetlink.c:3928 [inline] rtnl_newlink+0x17e2/0x1fe0 net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x80f/0xd70 net/core/rtnetlink.c:6955 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:727 ____sys_sendmsg+0x523/0x860 net/socket.c:2566 ___sys_sendmsg net/socket.c:2620 [inline] __sys_sendmsg+0x271/0x360 net/socket.c:2652 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: 0033:0x7fd23458d169 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:00007fd235337038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd2347a5fa0 RCX: 00007fd23458d169 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000008 RBP: 00007fd23460e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd2347a5fa0 R15: 00007ffe49389588 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6277 Comm: syz.6.36 Not tainted 6.14.0-syzkaller-ga1b5bd45d4ee #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 d9 5e 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:ffffc90000a07fa0 EFLAGS: 00000046 RAX: 1ffff92000141004 RBX: ffffc90000a08040 RCX: 1ffff92000141000 RDX: ffffffff81b0921d RSI: ffff8880b87276d8 RDI: ffffc90000a08020 RBP: ffffc90000a080a8 R08: ffffffff81b0918d R09: 0000000000000000 R10: ffff88802a204bb0 R11: ffffed1005440978 R12: dffffc0000000000 R13: ffffffff8ec0d280 R14: ffff8880b87276d8 R15: ffffffff93687020 FS: 00007fede65db6c0(0000) GS:ffff888125099000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558c94a5c8 CR3: 000000005c77e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline] _raw_spin_unlock_irqrestore+0x7a/0x140 kernel/locking/spinlock.c:194 hrtimer_interrupt+0x5ad/0xa40 kernel/time/hrtimer.c:1927 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:unwind_get_return_address+0x45/0x90 arch/x86/kernel/unwind_orc.c:369 Code: e8 03 42 0f b6 04 30 84 c0 75 4b 83 3b 00 74 3a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 74 08 48 89 df e8 fb 81 bf 00 <48> 8b 3b e8 53 bc 1e 00 85 c0 74 14 43 80 3c 37 00 74 08 48 89 df RSP: 0018:ffffc90000a083c0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc90000a08428 RCX: 0000000000000004 RDX: 0000000000000100 RSI: ffffffff8e4fc1d4 RDI: ffffc90000a083e0 RBP: ffffc90000a08470 R08: ffffffff81f6061d R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888031979e00 R13: ffffffff81aee9b0 R14: dffffc0000000000 R15: 1ffff92000141085 arch_stack_walk+0xff/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4151 [inline] slab_alloc_node mm/slub.c:4200 [inline] kmem_cache_alloc_node_noprof+0x1f2/0x3b0 mm/slub.c:4252 __alloc_skb+0x1c2/0x480 net/core/skbuff.c:658 __netdev_alloc_skb+0x105/0xa10 net/core/skbuff.c:732 netdev_alloc_skb include/linux/skbuff.h:3413 [inline] dev_alloc_skb include/linux/skbuff.h:3426 [inline] __ieee80211_beacon_get+0x9a7/0x15e0 net/mac80211/tx.c:5475 ieee80211_beacon_get_tim+0xb7/0x330 net/mac80211/tx.c:5597 ieee80211_beacon_get include/net/mac80211.h:5648 [inline] mac80211_hwsim_beacon_tx+0x3a2/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2313 __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:variable_test_bit arch/x86/include/asm/bitops.h:-1 [inline] RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline] RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline] RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:587 [inline] RIP: 0010:cpu_online include/linux/cpumask.h:1143 [inline] RIP: 0010:__do_trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:lock_release+0x386/0x3e0 kernel/locking/lockdep.c:5877 Code: e8 af 98 a1 03 e9 ac fd ff ff f3 0f 1e fa 49 89 ee 49 89 dc 65 8b 05 3d 6d c9 11 83 f8 08 73 5a 89 c0 48 0f a3 05 6a ca c0 0e <4c> 89 e3 4c 89 f5 0f 83 9b fc ff ff 65 ff 05 17 6d c9 11 48 8b 05 RSP: 0018:ffffc90002fd6838 EFLAGS: 00000297 RAX: 0000000000000001 RBX: ffffffff93687020 RCX: 0000000000080000 RDX: ffffc9001bb3e000 RSI: ffffffff81cef5d9 RDI: ffffffff8ed3dfe0 RBP: ffffffff81cef5d9 R08: ffffffff81cefa2a R09: 0000000000000000 R10: ffffc90002fd6920 R11: ffffffffa0001a8c R12: ffffffff93687020 R13: dffffc0000000000 R14: ffffffff81cef5d9 R15: ffffffff8ed3dfe0 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] trace_call_bpf+0x60b/0x8a0 kernel/trace/bpf_trace.c:148 perf_trace_run_bpf_submit+0x82/0x180 kernel/events/core.c:10807 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x39c/0x4a0 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+0x3b4/0x3e0 kernel/locking/lockdep.c:5877 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+0x1a9f/0x23b0 arch/x86/kernel/unwind_orc.c:680 arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2389 [inline] slab_free mm/slub.c:4646 [inline] kfree+0x198/0x430 mm/slub.c:4845 free_states kernel/bpf/verifier.c:22638 [inline] do_check_common+0x194d/0x20f0 kernel/bpf/verifier.c:22788 do_check_main kernel/bpf/verifier.c:22867 [inline] bpf_check+0x16ad9/0x1d1c0 kernel/bpf/verifier.c:24033 bpf_prog_load+0x17ee/0x2250 kernel/bpf/syscall.c:2971 __sys_bpf+0x5dd/0x8b0 kernel/bpf/syscall.c:5834 __do_sys_bpf kernel/bpf/syscall.c:5941 [inline] __se_sys_bpf kernel/bpf/syscall.c:5939 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5939 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: 0033:0x7fede578d169 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:00007fede65db038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fede59a5fa0 RCX: 00007fede578d169 RDX: 0000000000000048 RSI: 0000200000000200 RDI: 0000000000000005 RBP: 00007fede580e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fede59a5fa0 R15: 00007fffd9b5ce58