watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.1:4786] Modules linked in: irq event stamp: 6098439 hardirqs last enabled at (6098438): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (6098439): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (6071486): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (6071501): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 4786 Comm: syz-executor.1 Not tainted 6.5.0-rc6-next-20230817 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 Code: be b0 01 00 00 e8 a0 ff ff ff 31 c0 e9 59 0c 0f 03 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 0f 1e fa 65 8b 05 bd fc b5 7e 89 c1 48 8b 34 24 81 e1 00 01 00 RSP: 0018:ffff88806ce095c8 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff88806ce095f0 RCX: ffffffff8113b33c RDX: ffff888032ed51c0 RSI: 0000000000000100 RDI: 0000000000000005 RBP: 0000000000000002 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000002 R13: ffff88806ce096c0 R14: ffff888032ed51c0 R15: ffff88806ce09690 FS: 00007f6852a76700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32633000 CR3: 000000000f152000 CR4: 0000000000350ef0 Call Trace: unwind_get_return_address+0x59/0xe0 arch_stack_walk+0xa2/0x160 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x17b/0x390 __create_object+0x3c/0xc90 kmem_cache_alloc_node+0x23d/0x3b0 __alloc_skb+0x28c/0x330 skb_copy+0x13d/0x3f0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb11/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x107/0x1b0 Code: 39 45 28 75 5e 48 c7 45 28 00 00 00 00 48 c7 c6 02 b1 82 81 48 89 ef e8 f7 f1 ab ff 48 85 db 74 06 e8 ad 1c d2 ff fb 4d 85 f6 <74> 1e 5b 4c 89 f6 5d 4c 89 e7 41 5c 41 5d 41 5e 41 5f e9 12 fa ff RSP: 0018:ffff888041ba7720 EFLAGS: 00000286 RAX: 00000000005ca4cb RBX: 0000000000000200 RCX: ffffffff812e008f RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8182b123 RBP: ffff88806ce3d370 R08: 0000000000000001 R09: fffffbfff0ee996d R10: ffffffff8774cb6f R11: 0000000000000001 R12: ffff888008441dc0 R13: ffffea00010a7800 R14: ffffea0001070c00 R15: 0000000000000001 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x199/0x230 __kasan_kmalloc+0x6f/0x90 __kmalloc+0x5d/0x160 ext4_find_extent+0xa41/0xd30 ext4_ext_map_blocks+0x1c7/0x5920 ext4_map_blocks+0x763/0x1970 ext4_alloc_file_blocks.isra.0+0x29f/0xa90 ext4_fallocate+0x440/0x38a0 vfs_fallocate+0x493/0xe80 __x64_sys_fallocate+0xd3/0x140 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f6855500b19 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:00007f6852a76188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f6855613f60 RCX: 00007f6855500b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 00007f685555af6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000087ffffc R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc92e241f R14: 00007f6852a76300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.5.0-rc6-next-20230817 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xb20 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 5c 09 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 ba 21 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:ffff88806cf09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff845c7acb RDX: fffffbfff0b4e5b1 RSI: 0000000000000004 RDI: ffffffff85a72d80 RBP: ffffffff85a72d80 R08: 0000000000000000 R09: fffffbfff0b4e5b0 R10: ffffffff85a72d83 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4e5b0 R14: 0000000000000001 R15: 1ffff1100d9e1348 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 0000000012582000 CR4: 0000000000350ee0 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6e7/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 69 6d 28 00 0f 1f 44 00 00 fb f4 e9 9c 7d 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff888008de7e70 EFLAGS: 00000206 RAX: 00000000001d08e7 RBX: 0000000000000001 RCX: ffffffff845a0fbe RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81299855 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6a08 R10: ffff88806cf35043 R11: 0000000000000001 R12: ffffffff85d51c50 R13: 1ffff110011bcfd3 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 do_idle+0x305/0x3c0 cpu_startup_entry+0x18/0x20 start_secondary+0x1bf/0x220 secondary_startup_64_no_verify+0x178/0x17b ---------------- Code disassembly (best guess): 0: be b0 01 00 00 mov $0x1b0,%esi 5: e8 a0 ff ff ff callq 0xffffffaa a: 31 c0 xor %eax,%eax c: e9 59 0c 0f 03 jmpq 0x30f0c6a 11: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 18: 00 00 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: 90 nop 28: 90 nop 29: 90 nop * 2a: f3 0f 1e fa endbr64 <-- trapping instruction 2e: 65 8b 05 bd fc b5 7e mov %gs:0x7eb5fcbd(%rip),%eax # 0x7eb5fcf2 35: 89 c1 mov %eax,%ecx 37: 48 8b 34 24 mov (%rsp),%rsi 3b: 81 .byte 0x81 3c: e1 00 loope 0x3e 3e: 01 00 add %eax,(%rax)