watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.6:4177] Modules linked in: irq event stamp: 4622365 hardirqs last enabled at (4622364): [] asm_sysvec_apic_timer_interrupt+0x16/0x20 hardirqs last disabled at (4622365): [] sysvec_apic_timer_interrupt+0xb/0xc0 softirqs last enabled at (4571926): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4571929): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 4177 Comm: syz-executor.6 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+0x15e/0x4d0 Code: 0a 4d 85 c9 75 11 e9 a5 00 00 00 4d 8b 09 4d 85 c9 0f 84 99 00 00 00 41 39 59 08 75 ee 41 3b 49 0c 75 e8 31 c0 49 8b 7c c1 18 <49> 39 3c c7 75 db 48 83 c0 01 49 39 c0 75 ec 48 8b 7c 24 28 48 85 RSP: 0018:ffff88806d009800 EFLAGS: 00000202 RAX: 000000000000000d RBX: 00000000a95de754 RCX: 000000000000000f RDX: 00000000000de754 RSI: ffff88806d0098dc RDI: ffffffff8138a742 RBP: 0000000000000000 R08: 000000000000000f R09: ffff88800ea212c0 R10: ffff88806cbf3aa0 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000082820 R15: ffff88806d009870 FS: 00007fce4ddcc700(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d934000 CR3: 000000000eb44000 CR4: 0000000000350ef0 Call Trace: kasan_save_stack+0x31/0x40 kasan_set_track+0x21/0x30 __kasan_kmalloc+0x7e/0x90 __kmalloc_node_track_caller+0x4d/0xb0 __alloc_skb+0xe5/0x310 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:ext4_nonda_switch+0x45/0x1f0 Code: 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 9f 01 00 00 49 8b ac 24 50 06 00 00 48 b8 00 00 00 00 00 fc ff df <48> 8d bd 20 01 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 89 01 RSP: 0018:ffff888013edf9e0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88801be72a70 RCX: ffffc90002dae000 RDX: 1ffff11001f760ca RSI: ffffffff81ac72d0 RDI: ffff88800fbb0650 RBP: ffff88800fbb2000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800fbb0000 R13: 0000000000000000 R14: 0000000000001000 R15: ffff88800fbb2000 ext4_da_write_begin+0x173/0x9a0 generic_perform_write+0x256/0x580 ext4_buffered_write_iter+0x164/0x460 ext4_file_write_iter+0x3fb/0x1900 vfs_write+0x9c3/0xd90 ksys_write+0x127/0x250 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fce50856b19 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:00007fce4ddcc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fce50969f60 RCX: 00007fce50856b19 RDX: 00000000000292e9 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 00007fce508b0f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd29c1d45f R14: 00007fce4ddcc300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4164 Comm: syz-executor.4 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_acquire+0xc2c/0x5e70 Code: e0 0d 66 0b 44 24 08 98 2b 44 24 58 33 44 24 50 89 c2 29 c1 01 f0 c1 c2 06 31 ca 89 d1 29 d6 01 c2 c1 c1 08 31 f1 89 ce 29 c8 <01> d1 c1 c6 10 89 cf 31 f0 89 c6 29 c2 01 c8 c1 ce 0d 31 f2 89 d6 RSP: 0018:ffff88806d1095a8 EFLAGS: 00000012 RAX: 000000001040933d RBX: ffffffff87411da0 RCX: 00000000efbf2c7d RDX: 00000000ffef6f36 RSI: 00000000efbf2c7d RDI: ffffffff87411de0 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8740e80f R10: fffffbfff0e81d01 R11: 0000000000000001 R12: ffff8880416e9ac0 R13: ffff8880416ea498 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88806d100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd345f2d38 CR3: 000000000c0c4000 CR4: 0000000000350ee0 Call Trace: lock_acquire+0x1a2/0x530 ktime_get+0x7c/0x1f0 clockevents_program_event+0x14b/0x360 tick_program_event+0xac/0x140 hrtimer_interrupt+0x366/0x770 __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:preempt_count_add+0xa1/0x150 Code: 00 85 c0 75 39 65 48 8b 2c 25 c0 76 03 00 48 8d bd 40 13 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 85 00 00 00 48 89 9d 40 13 00 00 5b 5d e9 5b f0 17 03 31 ff RSP: 0018:ffff888043d7f3d0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffffff8112792c RCX: 1ffffffff0ef36e0 RDX: 1ffff110082dd5c0 RSI: ffff888043d7f488 RDI: ffff8880416eae00 RBP: ffff8880416e9ac0 R08: ffffffff85e510aa R09: ffffffff85e510ae R10: ffffed10087afea4 R11: ffff888043d7f4f8 R12: ffffed10087afe99 R13: ffffed10087afe98 R14: ffff888043d7f4b8 R15: ffff888043d7f4b8 unwind_next_frame+0xac/0x2130 __unwind_start+0x50f/0x7c0 arch_stack_walk+0x5f/0xf0 stack_trace_save+0x8c/0xc0 kasan_save_stack+0x1e/0x40 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 kmem_cache_free+0xbd/0x610 __put_anon_vma+0x110/0x390 unlink_anon_vmas+0x4a7/0x710 free_pgtables+0x24d/0x420 exit_mmap+0x1b4/0x680 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: 0033:0x7f93cf1f5c27 Code: Unable to access opcode bytes at 0x7f93cf1f5bfd. RSP: 002b:00007f93cc76bfa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f93cf1f5c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f93cc76c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007f93cc76c000 R15: 0000000000000000 audit: type=1400 audit(1667814126.208:11): avc: denied { tracepoint } for pid=4203 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 ---------------- Code disassembly (best guess): 0: 0a 4d 85 or -0x7b(%rbp),%cl 3: c9 leaveq 4: 75 11 jne 0x17 6: e9 a5 00 00 00 jmpq 0xb0 b: 4d 8b 09 mov (%r9),%r9 e: 4d 85 c9 test %r9,%r9 11: 0f 84 99 00 00 00 je 0xb0 17: 41 39 59 08 cmp %ebx,0x8(%r9) 1b: 75 ee jne 0xb 1d: 41 3b 49 0c cmp 0xc(%r9),%ecx 21: 75 e8 jne 0xb 23: 31 c0 xor %eax,%eax 25: 49 8b 7c c1 18 mov 0x18(%r9,%rax,8),%rdi * 2a: 49 39 3c c7 cmp %rdi,(%r15,%rax,8) <-- trapping instruction 2e: 75 db jne 0xb 30: 48 83 c0 01 add $0x1,%rax 34: 49 39 c0 cmp %rax,%r8 37: 75 ec jne 0x25 39: 48 8b 7c 24 28 mov 0x28(%rsp),%rdi 3e: 48 rex.W 3f: 85 .byte 0x85