watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:4329] Modules linked in: irq event stamp: 4517099 hardirqs last enabled at (4517098): [] asm_sysvec_apic_timer_interrupt+0x16/0x20 hardirqs last disabled at (4517099): [] sysvec_apic_timer_interrupt+0xb/0xc0 softirqs last enabled at (4399656): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4399659): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 4329 Comm: syz-executor.2 Not tainted 6.1.0-rc3-next-20221104 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__stack_depot_save+0x135/0x4d0 Code: 95 83 ff 02 0f 84 80 00 00 00 83 ff 03 74 78 83 ff 01 74 79 48 8b 05 0a 7a 98 05 89 da 23 15 0e 7a 98 05 4c 8d 14 d0 4d 8b 0a <4d> 85 c9 75 11 e9 a5 00 00 00 4d 8b 09 4d 85 c9 0f 84 99 00 00 00 RSP: 0018:ffff88806d0097e0 EFLAGS: 00000202 RAX: ffff88806c500000 RBX: 00000000cb3c8ca2 RCX: 000000000000000f RDX: 00000000000c8ca2 RSI: ffff88806d0098bc RDI: 0000000000000003 RBP: 0000000000000000 R08: 000000000000000f R09: ffff888015a68150 R10: ffff88806cb46510 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000820 R15: ffff88806d009850 FS: 00007fa6a933d700(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d6e0cd3008 CR3: 000000000d550000 CR4: 0000000000350ef0 Call Trace: kasan_save_stack+0x31/0x40 kasan_set_track+0x21/0x30 __kasan_slab_alloc+0x58/0x70 kmem_cache_alloc_node+0x1c6/0x400 __alloc_skb+0x216/0x310 skb_copy+0x139/0x3c0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x562/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 mac80211_hwsim_beacon+0x101/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x172/0x340 __do_softirq+0x1c3/0x8f5 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x5/0x20 sysvec_apic_timer_interrupt+0x8e/0xc0 asm_sysvec_apic_timer_interrupt+0x16/0x20 RIP: 0010:lock_acquire+0x1db/0x530 Code: 03 b8 ff ff ff ff 65 0f c1 05 11 df d6 7e 83 f8 01 0f 85 c8 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff888041ca76d0 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff11008394edc RCX: 0000000000000b37 RDX: 1ffff11002b377db RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8740e817 R10: fffffbfff0e81d02 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff854ba780 R15: 0000000000000000 fs_reclaim_acquire+0x119/0x160 kmem_cache_alloc+0x3b/0x3e0 __create_object+0x3d/0xc00 kmem_cache_alloc+0x235/0x3e0 proc_net_ns_init+0x3e/0x410 ops_init+0xbb/0x680 setup_net+0x40c/0x9d0 copy_net_ns+0x318/0x760 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x3b3/0x4a0 copy_process+0x29e3/0x7160 kernel_clone+0xe7/0x890 __do_sys_clone3+0x1d5/0x2e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fa6abdc7b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa6a933d188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fa6abedaf60 RCX: 00007fa6abdc7b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fa6abe21f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff8cd2971f R14: 00007fa6a933d300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4335 Comm: syz-executor.0 Not tainted 6.1.0-rc3-next-20221104 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_is_held_type+0x42/0x130 Code: 79 01 85 c9 0f 84 d2 00 00 00 65 8b 05 f7 3b cb 7b 85 c0 0f 85 c3 00 00 00 65 4c 8b 24 25 c0 76 03 00 41 8b 94 24 5c 09 00 00 <85> d2 0f 85 aa 00 00 00 48 89 fd 41 89 f6 9c 8f 04 24 fa 48 c7 c7 RSP: 0018:ffff88806d109658 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 1ffff1100da212d7 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff85407860 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff85b0ba57 R10: fffffbfff0b6174a R11: 0000000000000001 R12: ffff88800fbfd040 R13: 00000000ffffffff R14: ffff88806d12a618 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806d100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d6e0ca1648 CR3: 0000000018436000 CR4: 0000000000350ee0 Call Trace: rcu_read_lock_sched_held+0x3e/0x80 lock_acquire+0x45e/0x530 _raw_spin_lock_irq+0x32/0x50 __hrtimer_run_queues+0x1f3/0xb50 hrtimer_interrupt+0x315/0x770 __sysvec_apic_timer_interrupt+0x144/0x500 sysvec_apic_timer_interrupt+0x3b/0xc0 asm_sysvec_apic_timer_interrupt+0x16/0x20 RIP: 0010:queued_spin_lock_slowpath+0x124/0xc80 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 cd 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 de 1f 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e5 00 00 RSP: 0018:ffff88806d109a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff84395aa7 RDX: fffffbfff0b081e5 RSI: 0000000000000004 RDI: ffffffff85840f20 RBP: ffffffff85840f20 R08: 0000000000000000 R09: ffffffff85840f23 R10: fffffbfff0b081e4 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b081e4 R14: 0000000000000001 R15: 1ffff1100da21346 do_raw_spin_lock+0x1dc/0x260 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x562/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 mac80211_hwsim_beacon+0x101/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x172/0x340 __do_softirq+0x1c3/0x8f5 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x5/0x20 sysvec_apic_timer_interrupt+0x8e/0xc0 asm_sysvec_apic_timer_interrupt+0x16/0x20 RIP: 0010:lock_acquire+0x1db/0x530 Code: 03 b8 ff ff ff ff 65 0f c1 05 11 df d6 7e 83 f8 01 0f 85 c8 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff88800cb1f590 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff11001963eb4 RCX: 00000000ebd61952 RDX: 1ffff11001f7fb33 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8740e807 R10: fffffbfff0e81d00 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff85407920 R15: 0000000000000000 folio_memcg_lock+0x3a/0x4a0 page_remove_rmap+0x1e/0x490 unmap_page_range+0x1c46/0x2a50 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x21e/0x370 exit_mmap+0x154/0x680 mmput+0xd1/0x390 do_exit+0x993/0x2720 do_group_exit+0xd0/0x2a0 get_signal+0x2195/0x22d0 arch_do_signal_or_restart+0x75/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x19/0x40 do_syscall_64+0x48/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f5707057b19 Code: Unable to access opcode bytes at 0x7f5707057aef. RSP: 002b:00007f57045cd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 0000000000000005 RBX: 00007f570716af60 RCX: 00007f5707057b19 RDX: 0000000000101042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007f57070b1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffccd14a6cf R14: 00007f57045cd300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 95 xchg %eax,%ebp 1: 83 ff 02 cmp $0x2,%edi 4: 0f 84 80 00 00 00 je 0x8a a: 83 ff 03 cmp $0x3,%edi d: 74 78 je 0x87 f: 83 ff 01 cmp $0x1,%edi 12: 74 79 je 0x8d 14: 48 8b 05 0a 7a 98 05 mov 0x5987a0a(%rip),%rax # 0x5987a25 1b: 89 da mov %ebx,%edx 1d: 23 15 0e 7a 98 05 and 0x5987a0e(%rip),%edx # 0x5987a31 23: 4c 8d 14 d0 lea (%rax,%rdx,8),%r10 27: 4d 8b 0a mov (%r10),%r9 * 2a: 4d 85 c9 test %r9,%r9 <-- trapping instruction 2d: 75 11 jne 0x40 2f: e9 a5 00 00 00 jmpq 0xd9 34: 4d 8b 09 mov (%r9),%r9 37: 4d 85 c9 test %r9,%r9 3a: 0f 84 99 00 00 00 je 0xd9