watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.5:4072] Modules linked in: irq event stamp: 4167589 hardirqs last enabled at (4167588): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4167589): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4143468): [] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (4143471): [] irq_exit_rcu+0x11f/0x190 CPU: 1 PID: 4072 Comm: syz-executor.5 Not tainted 6.2.0-rc5-next-20230124 #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:ffff88806cf09760 EFLAGS: 00000213 RAX: 1ffffffff0bb9c5d RBX: ffffffff85dce2ec RCX: ffffffff8180cfe3 RDX: 0000000000000000 RSI: ffffffff861047ba RDI: ffffffff85dce2e0 RBP: ffffffff85dce2e0 R08: ffffffff861047ba R09: ffffffff8609cf5e R10: ffffed1008402fda R11: 0000000000038001 R12: ffffffff85dce2fc R13: ffffffff85dce2e0 R14: ffffffff85dce2e0 R15: dffffc0000000000 FS: 00007f977319e700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d835d2ff98 CR3: 000000000fc96000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0x2b1/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x3b4/0xc40 kmem_cache_alloc_node+0x215/0x310 __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+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+0x176/0x350 __do_softirq+0x274/0x8ff irq_exit_rcu+0x11f/0x190 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 Code: c0 e9 1d d4 fb 02 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 7d 10 ba 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 80 89 03 00 a9 RSP: 0018:ffff88804433f7e8 EFLAGS: 00000202 RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffffffff8206346d RDX: ffff88800ff83580 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff88800db8a200 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800db8a278 R13: 0000000000000004 R14: 0000000000003801 R15: 0000000000000001 bio_associate_blkg+0x58/0x250 bio_init+0x27f/0x500 bio_alloc_bioset+0x2d2/0x8e0 submit_bh_wbc+0x281/0x650 write_dirty_buffer+0xc8/0x170 __flush_batch+0x11b/0x2b0 jbd2_log_do_checkpoint+0xa89/0xf00 jbd2_journal_flush+0x1a6/0xc10 __ext4_ioctl+0x9fd/0x42a0 __x64_sys_ioctl+0x19e/0x210 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f9775c28b19 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:00007f977319e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9775d3bf60 RCX: 00007f9775c28b19 RDX: 0000000020000340 RSI: 000000004004662b RDI: 0000000000000006 RBP: 00007f9775c82f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe3c02359f R14: 00007f977319e300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.2.0-rc5-next-20230124 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc90 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 e6 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 ce 1f 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e4 00 00 RSP: 0018:ffff88806ce09a30 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff84452cbb RDX: fffffbfff0b491fd RSI: 0000000000000004 RDI: ffffffff85a48fe0 RBP: ffffffff85a48fe0 R08: 0000000000000000 R09: ffffffff85a48fe3 R10: fffffbfff0b491fc R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b491fc R14: 0000000000000001 R15: 1ffff1100d9c1347 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff553055650 CR3: 000000001737c000 CR4: 0000000000350ef0 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+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+0x176/0x350 __do_softirq+0x274/0x8ff irq_exit_rcu+0x11f/0x190 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0xf/0x20 Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 93 59 3f 00 fb f4 e9 af 23 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85407e38 EFLAGS: 00000202 RAX: 00000000001315f7 RBX: 0000000000000000 RCX: ffffffff84431652 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8542a800 R08: 0000000000000001 R09: ffff88806ce34f83 R10: ffffed100d9c69f0 R11: 0000000000000001 R12: fffffbfff0a85500 R13: ffffffff85d11e10 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 do_idle+0x30d/0x3e0 cpu_startup_entry+0x18/0x20 rest_init+0x164/0x290 arch_call_rest_init+0x13/0x2c start_kernel+0x4a2/0x4c7 secondary_startup_64_no_verify+0xe0/0xeb ---------------- 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