watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.6:12441] Modules linked in: irq event stamp: 2669681 hardirqs last enabled at (2669680): [<ffffffff84a57a6b>] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2669681): [<ffffffff84a5642f>] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2661804): [<ffffffff813a99fc>] handle_softirqs+0x50c/0x770 softirqs last disabled at (2661807): [<ffffffff813a9d94>] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 12441 Comm: syz-executor.6 Not tainted 6.13.0-rc2-next-20241213 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xac4/0x2490 Code: 85 9a 18 00 00 49 89 47 58 48 3d 00 08 33 81 0f 84 74 0e 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 ee 48 c1 ee 03 80 3c 16 00 <0f> 85 53 15 00 00 4c 89 ea 49 89 47 58 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffff88806cf094c8 EFLAGS: 00000246 RAX: ffffffff84a515ef RBX: 0000000000000001 RCX: ffffffff8684a172 RDX: dffffc0000000000 RSI: 1ffff1100d9e12b2 RDI: 1ffff1100d9e12b2 RBP: ffff88806cf09590 R08: ffffffff8684a176 R09: ffff88806cf09578 R10: 000000000003a808 R11: 00000000000259bb R12: ffff88806cf09598 R13: ffff88806cf09580 R14: ffff8880390bff30 R15: ffff88806cf09538 FS: 00007fd3fc815700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33422000 CR3: 000000003b1da000 CR4: 0000000000350ef0 Call Trace: <IRQ> arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/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/0xa80 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 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:qlist_free_all+0x28/0x160 Code: 90 90 48 8b 07 48 85 c0 0f 84 41 01 00 00 41 57 41 56 41 55 49 89 fd 41 54 49 89 f4 55 53 eb 3e 48 63 95 c0 00 00 00 48 8b 18 <48> 89 ef 48 29 d0 48 89 c6 49 89 c6 e8 77 f0 ff ff 49 89 c7 66 90 RSP: 0018:ffff8880390bf7b0 EFLAGS: 00000246 RAX: ffff88800ea77280 RBX: ffff88800ea77380 RCX: ffffea00003a9dc0 RDX: 0000000000000000 RSI: ffff888008c418c0 RDI: 0000000000080000 RBP: ffff888008c418c0 R08: ffff88800ea77300 R09: 000000000020000a R10: ffffea00003a9d00 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880390bf7e8 R14: ffff88800ea77300 R15: ffff88800ea77300 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 ext4_inode_attach_jinode+0x118/0x230 ext4_file_open+0x347/0xd40 do_dentry_open+0x71c/0x1420 vfs_open+0x82/0x3f0 path_openat+0x1cfa/0x2990 do_filp_open+0x1e9/0x450 do_sys_openat2+0x164/0x1d0 __x64_sys_openat+0x143/0x200 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd3ff29fb19 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:00007fd3fc815188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fd3ff3b2f60 RCX: 00007fd3ff29fb19 RDX: 00000000000026e1 RSI: 0000000020000200 RDI: ffffffffffffff9c RBP: 00007fd3ff2f9f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb3b6648f R14: 00007fd3fc815300 R15: 0000000000022000 </TASK> Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.13.0-rc2-next-20241213 #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 <e9> 5b fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 RSP: 0018:ffff88806ce099e0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff84a7a62f RDX: fffffbfff0c1b9e9 RSI: 0000000000000004 RDI: ffffffff860dcf40 RBP: ffffffff860dcf40 R08: 0000000000000000 R09: fffffbfff0c1b9e8 R10: ffffffff860dcf43 R11: 0000000000000001 R12: 1ffff1100d9c133d R13: 0000000000000003 R14: fffffbfff0c1b9e8 R15: ffff88806ce09a18 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556b7a1c58 CR3: 0000000015f62000 CR4: 0000000000350ef0 DR0: ffffffffffff01dd DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <NMI> </NMI> <IRQ> 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/0xa80 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 </IRQ> <TASK> 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 01 1d 00 0f 1f 44 00 00 fb f4 <fa> e9 1c 2f 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85a07e10 EFLAGS: 00000202 RAX: 00000000001a7e43 RBX: 0000000000000000 RCX: ffffffff84a57dd7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff814b281a RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9c6cba R10: ffff88806ce365d3 R11: 0000000000000000 R12: ffffffff863fbe90 R13: 1ffffffff0b40fc7 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fa/0x3b0 cpu_startup_entry+0x4f/0x60 rest_init+0x164/0x290 start_kernel+0x40d/0x530 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0xcb/0xe0 common_startup_64+0x12c/0x138 </TASK> mac80211_hwsim hwsim25 wlan1: entered promiscuous mode mac80211_hwsim hwsim25 wlan1: left promiscuous mode mac80211_hwsim hwsim20 wlan1: entered promiscuous mode mac80211_hwsim hwsim20 wlan1: left promiscuous mode mac80211_hwsim hwsim26 wlan1: entered promiscuous mode mac80211_hwsim hwsim26 wlan1: left promiscuous mode mac80211_hwsim hwsim20 wlan1: entered promiscuous mode mac80211_hwsim hwsim5 wlan1: entered promiscuous mode mac80211_hwsim hwsim26 wlan1: entered promiscuous mode mac80211_hwsim hwsim20 wlan1: left promiscuous mode mac80211_hwsim hwsim26 wlan1: left promiscuous mode mac80211_hwsim hwsim5 wlan1: left promiscuous mode mac80211_hwsim hwsim25 wlan1: entered promiscuous mode mac80211_hwsim hwsim25 wlan1: left promiscuous mode ---------------- Code disassembly (best guess): 0: 85 9a 18 00 00 49 test %ebx,0x49000018(%rdx) 6: 89 47 58 mov %eax,0x58(%rdi) 9: 48 3d 00 08 33 81 cmp $0xffffffff81330800,%rax f: 0f 84 74 0e 00 00 je 0xe89 15: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 1c: fc ff df 1f: 48 89 ee mov %rbp,%rsi 22: 48 c1 ee 03 shr $0x3,%rsi 26: 80 3c 16 00 cmpb $0x0,(%rsi,%rdx,1) * 2a: 0f 85 53 15 00 00 jne 0x1583 <-- trapping instruction 30: 4c 89 ea mov %r13,%rdx 33: 49 89 47 58 mov %rax,0x58(%r15) 37: 48 rex.W 38: b8 00 00 00 00 mov $0x0,%eax 3d: 00 fc add %bh,%ah 3f: ff .byte 0xff