watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.4:16402] Modules linked in: irq event stamp: 4657173 hardirqs last enabled at (4657172): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4657173): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4611098): [] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (4611101): [] irq_exit_rcu+0x11f/0x190 CPU: 1 PID: 16402 Comm: syz-executor.4 Not tainted 6.2.0-rc4-next-20230116 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__read_once_word_nocheck+0x3/0x10 Code: e9 8b fd ff ff e8 dd c9 6a 00 e9 43 fd ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 ec e2 31 03 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 RSP: 0018:ffff88806cf095f0 EFLAGS: 00000202 RAX: ffff888044947ef8 RBX: 0000000000000001 RCX: 0000000000000001 RDX: ffff888044947c01 RSI: ffff888044947c18 RDI: ffff888044947c18 RBP: ffff888044947c18 R08: ffffffff86156fbe R09: ffffffff86156fc2 R10: ffff88806cf09ff8 R11: ffff88806cf096b8 R12: ffff88806cf096b9 R13: ffff88806cf096d8 R14: ffff88806cf09678 R15: 0000000000000003 FS: 00007f80838a4700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2bd2c000 CR3: 000000000f42e000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0x14f9/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x172/0x300 __create_object+0x3d/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+0x566/0xb10 __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:__blk_mq_alloc_requests+0x311/0xf30 Code: 31 ed 44 89 e6 e8 af c5 47 ff 45 85 e4 41 0f 94 c5 e8 73 c9 47 ff 4a 8d bc eb 90 00 00 00 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 99 0a 00 00 48 8b 44 24 38 4e 8b a4 eb 90 00 00 00 48 c1 e8 RSP: 0018:ffff888044947558 EFLAGS: 00000246 RAX: 1ffffd1ffffa082a RBX: ffffe8ffffd040c0 RCX: ffffc90004de8000 RDX: 0000000000040000 RSI: ffffffff8201b8fd RDI: ffffe8ffffd04150 RBP: 0000000000400000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8880449476f0 blk_mq_submit_bio+0xa6b/0x1dd0 __submit_bio+0x1c7/0x230 submit_bio_noacct_nocheck+0x6cd/0x8a0 submit_bio_noacct+0x7a5/0x14c0 submit_bio+0x8f/0x1c0 write_dirty_buffer+0xc8/0x170 __flush_batch+0x11b/0x2b0 jbd2_log_do_checkpoint+0xa89/0xf00 jbd2_journal_flush+0x1a6/0xc10 __ext4_ioctl+0x9e3/0x43e0 __x64_sys_ioctl+0x19e/0x210 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f808632eb19 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:00007f80838a4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8086441f60 RCX: 00007f808632eb19 RDX: 0000000020000340 RSI: 000000004004662b RDI: 0000000000000006 RBP: 00007f8086388f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeff4510ff R14: 00007f80838a4300 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-rc4-next-20230116 #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 fe 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: ffffffff8444744b RDX: fffffbfff0b4911d RSI: 0000000000000004 RDI: ffffffff85a488e0 RBP: ffffffff85a488e0 R08: 0000000000000000 R09: ffffffff85a488e3 R10: fffffbfff0b4911c R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4911c R14: 0000000000000001 R15: 1ffff1100d9c1347 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056084fcbd50c CR3: 000000000d96e000 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+0x566/0xb10 __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 83 10 40 00 fb f4 e9 df 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: 000000000016c9b3 RBX: 0000000000000000 RCX: ffffffff84425de2 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8542a800 R08: 0000000000000001 R09: ffff88806ce34f83 R10: ffffed100d9c69f0 R11: 0000000000000001 R12: fffffbfff0a85500 R13: ffffffff85d10c50 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: e9 8b fd ff ff jmpq 0xfffffd90 5: e8 dd c9 6a 00 callq 0x6ac9e7 a: e9 43 fd ff ff jmpq 0xfffffd52 f: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 16: 00 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 48 8b 07 mov (%rdi),%rax * 2a: e9 ec e2 31 03 jmpq 0x331e31b <-- trapping instruction 2f: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 36: 00 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop