watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.6:6798] Modules linked in: irq event stamp: 4419397 hardirqs last enabled at (4419396): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (4419397): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (4401908): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (4401913): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 6798 Comm: syz-executor.6 Not tainted 6.12.0-next-20241128 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_access_ok+0x14f/0x1d0 Code: 00 0f 85 8f 00 00 00 48 89 da 4c 8b 73 10 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 04 3c 03 7e 52 8b 13 <31> c0 85 d2 74 84 4c 39 ed 0f 93 c0 4c 39 f5 0f 92 c2 20 d0 0f 84 RSP: 0018:ffff88806cf095d0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88806cf09678 RCX: ffff888028c70000 RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff88806cf09688 RBP: ffff888028c6f400 R08: 0000000000000000 R09: ffff88806cf096b8 R10: 000000000003c001 R11: 00000000000c1dd1 R12: 0000000000000008 R13: ffff888028c68000 R14: ffff888028c70000 R15: ffff88806cf09678 FS: 00007f0c05a76700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 000000003a216000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0xa5c/0x2490 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_node_noprof+0x14c/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7c0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/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 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:ip_finish_output2+0x5c0/0x1bc0 Code: 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 06 0f 8e da 15 00 00 41 0f b6 9f 80 00 00 00 31 ff 83 e3 10 89 de e8 c2 ec 8d fd 84 db <0f> 84 e5 00 00 00 e8 e5 e9 8d fd 49 8d 7f 18 48 b8 00 00 00 00 00 RSP: 0018:ffff888028c6f4b8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff83c4197e RDX: ffff888016871b80 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff0fdddec R10: 0000000000000000 R11: aa1414acbb1414ac R12: ffff888019278000 R13: 00000000aa1414ac R14: ffff88801649a800 R15: ffff888036b438c0 ip_do_fragment+0x1317/0x1800 ip_fragment.constprop.0+0x174/0x250 __ip_finish_output.part.0+0x16f/0x350 ip_output+0x27f/0x850 ip_push_pending_frames+0x310/0x5d0 raw_sendmsg+0x118b/0x30c0 inet_sendmsg+0x121/0x150 ____sys_sendmsg+0x99b/0xc80 ___sys_sendmsg+0x110/0x1b0 __sys_sendmsg+0x151/0x200 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0c08500b19 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:00007f0c05a76188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0c08613f60 RCX: 00007f0c08500b19 RDX: 0000000000000e00 RSI: 0000000020000780 RDI: 0000000000000006 RBP: 00007f0c0855af6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8e42b6df R14: 00007f0c05a76300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci3: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci2: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci4: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci4: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci5: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci5: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci4: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci5: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci4: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci4: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci4: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci5: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci7: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci7: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci7: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci7: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci7: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci7: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci5: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci5: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci0: command tx timeout Bluetooth: hci3: command tx timeout Bluetooth: hci2: command tx timeout ---------------- Code disassembly (best guess): 0: 00 0f add %cl,(%rdi) 2: 85 8f 00 00 00 48 test %ecx,0x48000000(%rdi) 8: 89 da mov %ebx,%edx a: 4c 8b 73 10 mov 0x10(%rbx),%r14 e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 48 c1 ea 03 shr $0x3,%rdx 1c: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 20: 84 c0 test %al,%al 22: 74 04 je 0x28 24: 3c 03 cmp $0x3,%al 26: 7e 52 jle 0x7a 28: 8b 13 mov (%rbx),%edx * 2a: 31 c0 xor %eax,%eax <-- trapping instruction 2c: 85 d2 test %edx,%edx 2e: 74 84 je 0xffffffb4 30: 4c 39 ed cmp %r13,%rbp 33: 0f 93 c0 setae %al 36: 4c 39 f5 cmp %r14,%rbp 39: 0f 92 c2 setb %dl 3c: 20 d0 and %dl,%al 3e: 0f .byte 0xf 3f: 84 .byte 0x84