watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.6:6881] Modules linked in: irq event stamp: 3862943 hardirqs last enabled at (3862942): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3862943): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3819222): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (3819225): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 6881 Comm: syz-executor.6 Not tainted 6.2.0-rc1-next-20221226 #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 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:ffff88806ce09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8440b92b RDX: fffffbfff0b48571 RSI: 0000000000000004 RDI: ffffffff85a42b80 RBP: ffffffff85a42b80 R08: 0000000000000000 R09: ffffffff85a42b83 R10: fffffbfff0b48570 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b48570 R14: 0000000000000001 R15: 1ffff1100d9c1346 FS: 00007f136e749700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0cb2174547 CR3: 000000000fd40000 CR4: 0000000000350ef0 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/0xc70 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:stack_trace_save+0x94/0xd0 Code: 37 81 89 74 24 28 48 8d 74 24 20 89 54 24 2c 48 c7 44 24 30 00 00 00 00 65 48 8b 14 25 00 89 03 00 e8 e0 8f d3 ff 8b 44 24 30 <48> c7 03 00 00 00 00 c7 43 08 00 00 00 00 48 8b 4c 24 78 65 48 2b RSP: 0018:ffff88802043fa10 EFLAGS: 00000292 RAX: 0000000000000008 RBX: ffffed1004087f42 RCX: ffff88802043f880 RDX: 1ffff11008f247da RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88800cbc6f00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888046230508 R13: 0000000000000000 R14: ffff88804623059c R15: ffff8880462304c0 set_track_prepare+0x74/0xd0 __create_object+0x3b4/0xc40 kmem_cache_alloc+0x273/0x410 __alloc_file+0x21/0x240 alloc_empty_file+0x71/0x170 alloc_file+0x59/0x800 alloc_file_pseudo+0x16e/0x260 anon_inode_getfile+0xb4/0x1e0 __do_sys_perf_event_open+0x1738/0x2920 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f13711d3b19 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:00007f136e749188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f13712e6f60 RCX: 00007f13711d3b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007f137122df6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc860e54f R14: 00007f136e749300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6933 Comm: syz-executor.1 Not tainted 6.2.0-rc1-next-20221226 #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: 7d ab 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:ffff88806cf095b0 EFLAGS: 00000006 RAX: 0000000000000000 RBX: 000000000000000f RCX: 0000000000000100 RDX: ffff888008d1d040 RSI: ffffffff81392a7b RDI: ffff88806cf2b840 RBP: dffffc0000000000 R08: 0000000000000006 R09: 7fffffffffffffff R10: 0000006d1a59b0ae R11: 0000000000000001 R12: 0000000000000046 R13: ffff88806cf2b840 R14: 0000000000000000 R15: ffff88806cf2b840 FS: 00007f22cb87b700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe6f5ded3a4 CR3: 000000000e7f2000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __hrtimer_run_queues+0x7b/0xc70 hrtimer_interrupt+0x319/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:preempt_count_sub+0x25/0x160 Code: 90 90 90 90 90 f3 0f 1e fa 48 c7 c0 c0 f7 9b 87 53 89 fb 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 <0f> b6 14 11 38 d0 7c 08 84 d2 0f 85 f0 00 00 00 8b 0d 55 4a 7a 06 RSP: 0018:ffff88806cf09838 EFLAGS: 00000206 RAX: 0000000000000003 RBX: 0000000000000001 RCX: 1ffffffff0f37ef8 RDX: dffffc0000000000 RSI: ffff888047c8f500 RDI: 0000000000000001 RBP: 0000000000000000 R08: ffffffff8646321c R09: ffffffff86463220 R10: ffff88806cf09ff8 R11: ffff88806cf09908 R12: ffff88806cf09909 R13: ffff88806cf09928 R14: ffff88806cf098c8 R15: 0000000000000001 unwind_next_frame+0xd8d/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xfb/0x610 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 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/0xc70 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:preempt_schedule_common+0x7e/0xc0 Code: e8 77 a2 3d fd 80 7d 00 00 75 4d 48 8b 03 a8 08 75 bd 5b 5d 41 5c 41 5d e9 23 87 01 00 4c 8b 6c 24 20 4c 89 ef e8 c2 eb ec fc <85> c0 75 1e 48 8d bb 40 13 00 00 48 89 f8 48 c1 e8 03 42 80 3c 20 RSP: 0018:ffff888047c8f5c0 EFLAGS: 00000287 RAX: 0000000000000000 RBX: ffff888008d1d040 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff843f531b RBP: ffffed10011a3a08 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000 R13: ffffffff843f531b R14: 0000000000000004 R15: 0000000000000af9 __cond_resched+0x1b/0x30 ext4_journal_check_start+0x2b/0x2b0 __ext4_journal_start_sb+0x97/0x6b0 __ext4_new_inode+0x2f36/0x55e0 ext4_create+0x2e4/0x4e0 lookup_open.isra.0+0xed0/0x1250 path_openat+0x946/0x29b0 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: 0033:0x7f22ce305b19 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:00007f22cb87b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f22ce418f60 RCX: 00007f22ce305b19 RDX: 0000000000101042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007f22ce35ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000010 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe267669cf R14: 00007f22cb87b300 R15: 0000000000022000 I/O error, dev loop4, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 loop7: detected capacity change from 0 to 264192 ext4: Bad value for 'jqfmt' loop3: detected capacity change from 0 to 40 device lo left promiscuous mode syz-executor.3: attempt to access beyond end of device loop3: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop3, logical block 10, lost async page write Bluetooth: hci2: command 0x0406 tx timeout ---------------- 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 de 1f 00 00 jmpq 0x2006 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