watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.1:5755] Modules linked in: irq event stamp: 5330315 hardirqs last enabled at (5330314): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5330315): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5310326): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (5310329): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 5755 Comm: syz-executor.1 Not tainted 6.1.0-rc7-next-20221130 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 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 64 6a 00 48 8b 54 24 28 48 8b 74 24 20 44 8b 5c 24 18 8b 0c 95 ac e2 48 86 <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 ac e2 48 86 49 RSP: 0018:ffff88806ce09718 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 0000000000000001 RCX: 000000000002b8b4 RDX: 000000000000abf1 RSI: 000000000000abf1 RDI: ffffffff864b9270 RBP: ffff88806ce097f0 R08: ffffffff86131ea0 R09: ffffffff86131ea4 R10: ffff88806ce09ff8 R11: 0000000000038001 R12: ffff88806ce097d9 R13: ffff88806ce097f8 R14: ffff88806ce09798 R15: ffffffff81abf185 FS: 00007fa23caac700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556223098 CR3: 000000001fc9e000 CR4: 0000000000350ef0 Call Trace: 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 __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:qlist_free_all+0x36/0x1a0 Code: 41 57 41 56 41 55 49 89 fd 41 54 49 bc 00 00 00 00 00 fc ff df 55 48 89 f5 53 48 83 ec 08 eb 4d 49 63 86 c0 00 00 00 49 8b 18 <4c> 89 f7 49 29 c0 4c 89 c6 4d 89 c7 e8 39 f4 ff ff 48 89 c1 0f 1f RSP: 0018:ffff888021407830 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff888035b6ed80 RCX: ffff888008441780 RDX: ffffea0000d6db80 RSI: ffffea00003a7b80 RDI: 0000000040000000 RBP: 0000000000000000 R08: ffff888035b6e280 R09: 000000008020001c R10: ffffea00003a7b80 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888021407870 R14: ffff888008441780 R15: ffff88800e9ee200 kasan_quarantine_reduce+0x196/0x230 __kasan_slab_alloc+0x4c/0x70 kmem_cache_alloc+0x1e1/0x410 ext4_inode_attach_jinode+0x118/0x230 ext4_file_open+0x2f6/0xb80 do_dentry_open+0x6ca/0x12b0 path_openat+0x1847/0x29b0 do_filp_open+0x1ba/0x410 do_sys_openat2+0x171/0x4c0 __x64_sys_openat+0x143/0x200 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fa23f536b19 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:00007fa23caac188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fa23f649f60 RCX: 00007fa23f536b19 RDX: 0000000000004042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007fa23f590f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc780209ff R14: 00007fa23caac300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5744 Comm: syz-executor.4 Not tainted 6.1.0-rc7-next-20221130 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:tick_program_event+0x68/0x150 Code: ff ff ff ff ff 7f 48 39 c5 74 7d e8 82 1c 0c 00 49 8d 7c 24 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e bc 00 00 00 45 8b 6c 24 38 bf 04 00 00 00 RSP: 0018:ffff88806cf09508 EFLAGS: 00000016 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: 1ffff1100d9e5027 RSI: ffffffff813cfc6e RDI: ffff88806cf28138 RBP: 00000051231054a1 R08: 0000000000000007 R09: 7fffffffffffffff R10: 00000051231054a1 R11: 0000000000000001 R12: ffff88806cf28100 R13: ffff88806cf2b88c R14: 0000000000000000 R15: ffff88806cf2b840 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563ce4bf4628 CR3: 000000000f1fe000 CR4: 0000000000350ee0 Call Trace: 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:unwind_next_frame+0x593/0x2130 Code: 00 00 0f 87 99 00 00 00 3c 04 0f 84 56 0a 00 00 3c 05 0f 85 6d 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 14 24 48 c1 ea 03 <80> 3c 02 00 0f 85 4f 19 00 00 4c 89 c0 49 8b 4e 48 48 ba 00 00 00 RSP: 0018:ffff88806cf096b0 EFLAGS: 00000212 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 1ffff1100d9e12ef RSI: 0000000000000001 RDI: ffffffff85d8fa44 RBP: ffff88806cf09788 R08: ffffffff860a7576 R09: ffffffff860a757a R10: ffff88806cf09ff8 R11: 0000000000038001 R12: ffff88806cf09771 R13: ffff88806cf09790 R14: ffff88806cf09730 R15: ffffffff860a757b arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_kmalloc+0x82/0x90 __kmalloc_node_track_caller+0x53/0xb0 __alloc_skb+0xe9/0x310 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:__is_insn_slot_addr+0x4/0x250 Code: f2 9c 33 00 e9 96 fd ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <41> 56 41 55 41 54 49 89 f4 55 53 48 89 fb e8 99 83 ff ff e8 f4 eb RSP: 0018:ffff88801b3af498 EFLAGS: 00000246 RAX: 000000001b3af500 RBX: 00007f1dd5baab19 RCX: 0000000000000000 RDX: ffff888021f8b580 RSI: 00007f1dd5baab19 RDI: ffffffff8564e140 RBP: 00007f1dd5baab19 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000038001 R12: ffff88801b3af5a8 R13: 0000000000000000 R14: ffff888021f8b580 R15: ffff888008c8e3c0 kernel_text_address+0x48/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 kmem_cache_free+0xc1/0x610 unlink_anon_vmas+0x11a/0x720 free_pgtables+0x251/0x420 exit_mmap+0x1b8/0x680 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: 0033:0x7f1dd5baab19 Code: Unable to access opcode bytes at 0x7f1dd5baaaef. RSP: 002b:00007f1dd30ff188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: 0000000000004168 RBX: 00007f1dd5cbe020 RCX: 00007f1dd5baab19 RDX: 00000000fffffdcd RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00007f1dd5c04f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffce0dc180f R14: 00007f1dd30ff300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 48 89 54 24 28 mov %rdx,0x28(%rsp) 5: 48 89 74 24 20 mov %rsi,0x20(%rsp) a: 44 89 5c 24 18 mov %r11d,0x18(%rsp) f: e8 09 64 6a 00 callq 0x6a641d 14: 48 8b 54 24 28 mov 0x28(%rsp),%rdx 19: 48 8b 74 24 20 mov 0x20(%rsp),%rsi 1e: 44 8b 5c 24 18 mov 0x18(%rsp),%r11d 23: 8b 0c 95 ac e2 48 86 mov -0x79b71d54(,%rdx,4),%ecx * 2a: 8d 56 01 lea 0x1(%rsi),%edx <-- trapping instruction 2d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 34: fc ff df 37: 48 8d 3c 95 ac e2 48 lea -0x79b71d54(,%rdx,4),%rdi 3e: 86 3f: 49 rex.WB