watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.5:7598] Modules linked in: irq event stamp: 2437133 hardirqs last enabled at (2437132): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2437133): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2371378): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2371381): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 7598 Comm: syz-executor.5 Not tainted 6.12.0-next-20241119 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x1be/0x2490 Code: 00 00 00 fc ff df 89 f2 48 8d 3c 95 7c bd c2 86 49 89 f8 49 c1 e8 03 45 0f b6 04 00 48 89 f8 83 e0 07 83 c0 03 44 38 c0 7c 32 <45> 84 c0 74 2d 48 89 54 24 28 48 89 74 24 20 44 89 54 24 18 48 89 RSP: 0018:ffff88806ce096f8 EFLAGS: 00000206 RAX: 0000000000000003 RBX: 0000000000000002 RCX: ffffffff818f293c RDX: 0000000000008f29 RSI: 0000000000008f29 RDI: ffffffff86c4fa20 RBP: ffff88806ce097c0 R08: 0000000000000000 R09: ffff88806ce097a8 R10: 000000000003c001 R11: 0000000000024e8a R12: ffff88806ce097c8 R13: ffff88806ce097b0 R14: ffff88806ce097a9 R15: ffff88806ce09768 FS: 00007f55b9b8c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555569c6dc58 CR3: 000000001659c000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 set_track_prepare+0x36/0x70 __alloc_object+0xf4/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 skb_copy+0x1d5/0x3b0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xafb/0x1320 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_pc+0x60/0x80 Code: 8b 82 ec 14 00 00 85 c0 75 05 e9 0b f7 34 03 8b 82 c8 14 00 00 83 f8 02 75 f0 48 8b 8a d0 14 00 00 8b 92 cc 14 00 00 48 8b 01 <48> 83 c0 01 48 39 c2 76 d7 48 89 01 48 89 34 c1 e9 db f6 34 03 66 RSP: 0018:ffff88803fd8f6b0 EFLAGS: 00000246 RAX: 000000000001b9b6 RBX: 00000000000011df RCX: ffffc90005ba9000 RDX: 0000000000040000 RSI: ffffffff83c673a1 RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff888009a4dcb8 R10: 00000000000011df R11: 00000000fa83b2da R12: dffffc0000000000 R13: ffff88803fd8f898 R14: 0000000000003fff R15: dffffc0000000000 inet_twsk_purge+0x111/0x840 tcp_twsk_purge+0x115/0x150 tcp_sk_exit_batch+0x2a/0x170 ops_exit_list+0x12b/0x180 setup_net+0x492/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8e90 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f55bc679b19 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:00007f55b9b8c188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f55bc78d1a0 RCX: 00007f55bc679b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f55bc6d3f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd926f239f R14: 00007f55b9b8c300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-next-20241119 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x242/0xb60 Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 85 08 00 00 b8 01 00 00 00 66 89 45 00 e9 bf fe ff ff 89 44 24 38 f3 90 5b fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 RSP: 0018:ffff88806cf099e0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8486e2bf RDX: fffffbfff0c1b61d RSI: 0000000000000004 RDI: ffffffff860db0e0 RBP: ffffffff860db0e0 R08: 0000000000000000 R09: fffffbfff0c1b61c R10: ffffffff860db0e3 R11: 5050505001000011 R12: 1ffff1100d9e133d R13: 0000000000000003 R14: fffffbfff0c1b61c R15: ffff88806cf09a18 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005626aa7d6618 CR3: 00000000162c0000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1de/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6d1/0x1320 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 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 e9 bf 3d 00 0f 1f 44 00 00 fb f4 e9 7c 2e 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff8880096cfe68 EFLAGS: 00000202 RAX: 000000000008dbd5 RBX: 0000000000000001 RCX: ffffffff8484baf7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812b109a RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6cba R10: ffff88806cf365d3 R11: 0000000000000000 R12: ffffffff863f9310 R13: 1ffff110012d9fd2 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fa/0x3b0 cpu_startup_entry+0x4f/0x60 start_secondary+0x1c1/0x220 common_startup_64+0x12c/0x138 ---------------- Code disassembly (best guess), 5 bytes skipped: 0: df 89 f2 48 8d 3c fisttps 0x3c8d48f2(%rcx) 6: 95 xchg %eax,%ebp 7: 7c bd jl 0xffffffc6 9: c2 86 49 retq $0x4986 c: 89 f8 mov %edi,%eax e: 49 c1 e8 03 shr $0x3,%r8 12: 45 0f b6 04 00 movzbl (%r8,%rax,1),%r8d 17: 48 89 f8 mov %rdi,%rax 1a: 83 e0 07 and $0x7,%eax 1d: 83 c0 03 add $0x3,%eax 20: 44 38 c0 cmp %r8b,%al 23: 7c 32 jl 0x57 * 25: 45 84 c0 test %r8b,%r8b <-- trapping instruction 28: 74 2d je 0x57 2a: 48 89 54 24 28 mov %rdx,0x28(%rsp) 2f: 48 89 74 24 20 mov %rsi,0x20(%rsp) 34: 44 89 54 24 18 mov %r10d,0x18(%rsp) 39: 48 rex.W 3a: 89 .byte 0x89