watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.6:8644] Modules linked in: irq event stamp: 10487603 hardirqs last enabled at (10487602): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (10487603): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (10478356): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (10478359): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 8644 Comm: syz-executor.6 Not tainted 6.1.0-rc7-next-20221201 #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:ffff88806cf09628 EFLAGS: 00000217 RAX: 1ffffffff0beb5db RBX: ffffffff85f5aedc RCX: ffffffff834ab659 RDX: 0000000000000000 RSI: ffffffff863582d4 RDI: ffffffff85f5aedc RBP: ffffffff85f5aedc R08: ffffffff863582d4 R09: ffffffff860eba58 R10: ffffed100d9e12eb R11: 0000000000038001 R12: ffffffff85f5aedc R13: ffffffff85f5aedc R14: ffffffff85f5aedc R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f329ccb9d8 CR3: 000000000dcd2000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: unwind_next_frame+0x2b1/0x2130 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+0x1e1/0x410 __create_object+0x3d/0xc10 kmem_cache_alloc_node+0x283/0x420 __alloc_skb+0x21a/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3de/0x1380 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __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:lock_acquire+0x1df/0x530 Code: 03 b8 ff ff ff ff 65 0f c1 05 55 66 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:ffff888047387588 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff11008e70eb3 RCX: 00000000eb241a10 RDX: 1ffff110031647db RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8762a847 R10: fffffbfff0ec5508 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff85608040 R15: 0000000000000000 folio_memcg_lock+0x3e/0x4a0 page_remove_rmap+0x57/0x620 unmap_page_range+0x1fdf/0x2c10 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: 0033:0x7fbd10a1fb19 Code: Unable to access opcode bytes at 0x7fbd10a1faef. RSP: 002b:00007fbd0df95188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 0000000000000005 RBX: 00007fbd10b32f60 RCX: 00007fbd10a1fb19 RDX: 0000000000004042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007fbd10a79f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff46569b7f R14: 00007fbd0df95300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8623 Comm: syz-executor.1 Not tainted 6.1.0-rc7-next-20221201 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x70 Code: ad 78 ba 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 89 03 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 0c 14 00 00 <85> c0 74 2b 8b 82 e8 13 00 00 83 f8 02 75 20 48 8b 8a f0 13 00 00 RSP: 0018:ffff88806ce09548 EFLAGS: 00000006 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000100 RDX: ffff8880472bb580 RSI: ffffffff815e5d00 RDI: ffffffff848cdd80 RBP: ffffffff848cdd80 R08: 0000000000000000 R09: ffff88806ce34f03 R10: ffffed100d9c69e0 R11: 0000000000000001 R12: 4000000000000000 R13: 4000000000000002 R14: 0000000000276c94 R15: ffffffff848cdd80 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f329c6b628 CR3: 000000001afb4000 CR4: 0000000000350ef0 Call Trace: trace_rcu_dyntick+0x20/0x250 ct_nmi_enter+0xfa/0x1c0 ct_irq_enter_irqson+0x2c/0x50 trace_hardirqs_on+0xae/0x130 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unwind_next_frame+0x1fd/0x2130 Code: 48 89 54 24 28 48 89 74 24 20 44 89 5c 24 18 e8 09 6a 6a 00 48 8b 54 24 28 48 8b 74 24 20 44 8b 5c 24 18 8b 0c 95 68 dd 48 86 <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 68 dd 48 86 49 RSP: 0018:ffff88806ce09698 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 0000000000000002 RCX: 000000000007580d RDX: 000000000001fd1c RSI: 000000000001fd1c RDI: ffffffff8650d1d8 RBP: ffff88806ce09770 R08: ffffffff862ea53a R09: ffffffff862ea53e R10: ffffed100d9c12f0 R11: 0000000000038001 R12: ffff88806ce09759 R13: ffff88806ce09778 R14: ffff88806ce09718 R15: ffffffff82fd1c5d 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_node+0x1f5/0x420 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/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:lock_is_held_type+0x58/0x130 Code: c0 0f 85 c3 00 00 00 65 4c 8b 24 25 00 89 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 48 c7 c7 40 fe 86 84 4d 8d ac 24 60 09 00 00 31 db e8 21 0f 00 RSP: 0018:ffff888044c17588 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff85607f80 RBP: ffffffff85607f80 R08: 0000000000000000 R09: ffffffff85d06e97 R10: fffffbfff0ba0dd2 R11: 0000000000000001 R12: ffff8880472bb580 R13: 00000000ffffffff R14: 00000000ffffffff R15: ffff888044c17ad8 rcu_read_lock_sched_held+0x42/0x80 lock_release+0x54b/0x750 __mod_lruvec_page_state+0x26e/0x330 page_remove_rmap+0x232/0x620 unmap_page_range+0x1fdf/0x2c10 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: 0033:0x7f5757c05b19 Code: Unable to access opcode bytes at 0x7f5757c05aef. RSP: 002b:00007f575517b218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 00007f5757d18f68 RCX: 00007f5757c05b19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5757d18f68 RBP: 00007f5757d18f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5757d18f6c R13: 00007ffed8473f6f R14: 00007f575517b300 R15: 0000000000022000 ---------------- 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