watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.6:60036] Modules linked in: irq event stamp: 7085145 hardirqs last enabled at (7085144): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (7085145): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (6926764): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (6926767): [] __irq_exit_rcu+0xcc/0x110 CPU: 1 PID: 60036 Comm: syz-executor.6 Not tainted 6.2.0-rc6-next-20230202 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x6f/0xf0 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 48 01 RSP: 0018:ffff88806cf09658 EFLAGS: 00000212 RAX: 1ffffffff0baa004 RBX: ffffffff85d50020 RCX: ffffffff81080f68 RDX: 0000000000000000 RSI: ffffffff86048a72 RDI: ffffffff85d5001c RBP: ffffffff85d5001c R08: ffffffff86048a8a R09: ffff88806cf09758 R10: 0000000000038001 R11: 0000000000000000 R12: ffffffff85d50028 R13: ffffffff85d5001c R14: ffffffff85d5001c R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055829e0370e0 CR3: 0000000005482000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0x290/0x2360 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node+0x187/0x330 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3f0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb08/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x567/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x258/0x8a2 __irq_exit_rcu+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:strlen+0x58/0xa0 Code: 75 50 80 7d 00 00 74 3d 48 bb 00 00 00 00 00 fc ff df 48 89 e8 48 83 c0 01 48 89 c2 48 89 c1 48 c1 ea 03 83 e1 07 0f b6 14 1a <38> ca 7f 04 84 d2 75 27 80 38 00 75 de 48 83 c4 08 48 29 e8 5b 5d RSP: 0018:ffff888046217510 EFLAGS: 00000202 RAX: ffffffff84853f6f RBX: dffffc0000000000 RCX: 0000000000000007 RDX: 0000000000000000 RSI: ffff88800dfff7f8 RDI: ffffffff84853f60 RBP: ffffffff84853f60 R08: 0000000000000000 R09: ffffffff85d10397 R10: fffffbfff0ba2072 R11: 0000000000000001 R12: 1ffff11008c42eac R13: ffff8880462175e0 R14: ffffffff8550d5e0 R15: 0000000000000000 perf_trace_lock+0xc1/0x480 lock_release+0x4a9/0x710 _raw_spin_unlock+0x16/0x40 unmap_page_range+0x1206/0x2da0 unmap_single_vma+0x194/0x2a0 unmap_vmas+0x233/0x390 exit_mmap+0x15b/0x6a0 mmput+0xd5/0x390 do_exit+0x9c6/0x2800 do_group_exit+0xd4/0x2a0 get_signal+0x23c8/0x2450 arch_do_signal_or_restart+0x79/0x590 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f79b2b4ab19 Code: Unable to access opcode bytes at 0x7f79b2b4aaef. RSP: 002b:00007f79b00c0218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f79b2c5df68 RCX: 00007f79b2b4ab19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f79b2c5df68 RBP: 00007f79b2c5df60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f79b2c5df6c R13: 00007ffea8703bef R14: 00007f79b00c0300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 72 4d jb 0x4f 2: 4c 89 e0 mov %r12,%rax 5: 48 29 e8 sub %rbp,%rax 8: 48 89 c2 mov %rax,%rdx b: 48 c1 e8 3f shr $0x3f,%rax f: 48 c1 fa 02 sar $0x2,%rdx 13: 48 01 d0 add %rdx,%rax 16: 48 d1 f8 sar %rax 19: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 50 jne 0x8b 3b: 48 63 03 movslq (%rbx),%rax 3e: 48 rex.W 3f: 01 .byte 0x1