watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.4:13182] Modules linked in: irq event stamp: 7839629 hardirqs last enabled at (7839628): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (7839629): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (7798402): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (7798405): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 13182 Comm: syz-executor.4 Not tainted 6.1.0-rc6-next-20221125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc80 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 ee 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:ffff88806cf09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8440e25b RDX: fffffbfff0b480d9 RSI: 0000000000000004 RDI: ffffffff85a406c0 RBP: ffffffff85a406c0 R08: 0000000000000000 R09: ffffffff85a406c3 R10: fffffbfff0b480d8 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b480d8 R14: 0000000000000001 R15: 1ffff1100d9e1346 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d0fea49628 CR3: 000000000d0ee000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unmap_page_range+0x1c49/0x2c10 Code: 85 db 0f 84 a0 03 00 00 e8 24 20 dc ff 48 8b 74 24 70 4c 89 ff ba 00 10 00 00 e8 52 c9 03 00 31 ff 89 c3 89 c6 e8 d7 1b dc ff <84> db 0f 84 8d ed ff ff 48 8b 44 24 10 c7 44 24 78 01 00 00 00 48 RSP: 0018:ffff88804743f700 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816ce389 RDX: ffff888018c1d040 RSI: 0000000000000000 RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888018680f68 R13: ffffea000119c680 R14: 0000000000000000 R15: ffff88804743fad8 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f8946cb9b19 Code: Unable to access opcode bytes at 0x7f8946cb9aef. RSP: 002b:00007f894420e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 0000000000000009 RBX: 00007f8946dcd020 RCX: 00007f8946cb9b19 RDX: 0000000000008000 RSI: 0000000020000140 RDI: ffffffffffffff9c RBP: 00007f8946d13f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffda4ea09df R14: 00007f894420e300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13178 Comm: syz-executor.0 Not tainted 6.1.0-rc6-next-20221125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lapic_next_deadline+0x25/0x50 Code: 90 90 90 90 90 f3 0f 1e fa 0f ae f0 0f ae e8 0f 31 48 c1 e2 20 b9 e0 06 00 00 48 09 c2 48 8d 04 fa 48 89 c2 48 c1 ea 20 0f 30 <66> 90 31 c0 e9 46 f7 30 03 48 89 c6 31 d2 bf e0 06 00 00 e8 03 f7 RSP: 0018:ffff88806ce099f0 EFLAGS: 00000017 RAX: 0000026facc62ae8 RBX: 0000000000000000 RCX: 00000000000006e0 RDX: 000000000000026f RSI: ffff88806ce28100 RDI: 000000000000051f RBP: ffff88806ce28100 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000ea9 R11: 0000000000000001 R12: 000000000000051f R13: 0000000000000000 R14: 0000000000000001 R15: ffff88806ce2b840 FS: 00007fb6fe487700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d0fea49628 CR3: 000000000db06000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: clockevents_program_event+0x248/0x360 tick_program_event+0xb0/0x150 hrtimer_interrupt+0x36a/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__call_rcu_common.constprop.0+0x58e/0xa40 Code: 3c 02 00 0f 85 d3 03 00 00 48 8b 05 fc bf 2c 04 48 03 85 18 01 00 00 49 39 c5 0f 8f dd 01 00 00 e8 b7 b4 1b 00 fb 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 77 9f 0c 03 e8 5e b3 1b 00 e9 d4 RSP: 0018:ffff88806ce09bd0 EFLAGS: 00000292 RAX: 0000000000417af2 RBX: ffff88801875c740 RCX: ffffffff812b6b6f RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000000 RBP: ffff88806ce3a040 R08: 0000000000000001 R09: ffffffff8762784f R10: fffffbfff0ec4f09 R11: 0000000000000001 R12: ffff88806ce3a158 R13: 00000000000029d9 R14: ffff88806ce3a128 R15: ffff88806ce3a0e0 __kmem_cache_free+0x95/0x410 skb_release_data+0x6d8/0x810 consume_skb+0xcb/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unwind_next_frame+0xd6e/0x2130 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 7a 10 00 00 49 89 6e 50 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e 92 12 00 00 41 3b 1e 0f 84 04 08 00 00 bf RSP: 0018:ffff88803c4a6f48 EFLAGS: 00000216 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 1ffff11007894df9 RSI: ffff88803c4a7850 RDI: ffff88803c4a7018 RBP: ffff888036482000 R08: ffffffff863607a2 R09: ffffffff863607a6 R10: ffffed1007894e06 R11: ffff88803c4a7008 R12: ffff88803c4a7009 R13: ffff88803c4a7028 R14: ffff88803c4a6fc8 R15: 0000000000000007 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc+0x1e0/0x410 __kernfs_new_node+0xd4/0x8c0 kernfs_create_dir_ns+0xa0/0x230 internal_create_group+0x786/0xb20 internal_create_groups.part.0+0x90/0x140 sysfs_create_groups+0x29/0x50 device_add+0x1437/0x1ec0 netdev_register_kobject+0x17e/0x3b0 register_netdevice+0xd60/0x1530 register_netdev+0x31/0x60 sit_init_net+0x358/0xa00 ops_init+0xbb/0x680 setup_net+0x40c/0x9d0 copy_net_ns+0x31c/0x760 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x3b7/0x4a0 copy_process+0x29e3/0x7220 kernel_clone+0xeb/0x950 __do_sys_clone3+0x1d9/0x370 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fb700f11b19 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:00007fb6fe487188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fb701024f60 RCX: 00007fb700f11b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fb700f6bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd6dece96f R14: 00007fb6fe487300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 65 48 add %ah,0x48(%rbp) 5: 2b 04 25 28 00 00 00 sub 0x28,%eax c: 0f 85 cd 0a 00 00 jne 0xadf 12: 48 81 c4 88 00 00 00 add $0x88,%rsp 19: 5b pop %rbx 1a: 5d pop %rbp 1b: 41 5c pop %r12 1d: 41 5d pop %r13 1f: 41 5e pop %r14 21: 41 5f pop %r15 23: e9 ee 1f 00 00 jmpq 0x2016 28: f3 90 pause * 2a: e9 71 ff ff ff jmpq 0xffffffa0 <-- trapping instruction 2f: 44 8b 74 24 48 mov 0x48(%rsp),%r14d 34: 41 81 fe 00 01 00 00 cmp $0x100,%r14d 3b: 0f .byte 0xf 3c: 84 e5 test %ah,%ch