R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffce5aa83cf R14: 00007fe42a9ec300 R15: 0000000000022000 rcu_tasks_wait_gp: rcu_tasks grace period number 105 (since boot) is 10048 jiffies old. watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.4:20167] Modules linked in: irq event stamp: 2378449 hardirqs last enabled at (2378448): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2378449): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2337620): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2337623): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 20167 Comm: syz-executor.4 Not tainted 6.13.0-rc1-next-20241205 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x491/0x2490 Code: 85 48 c7 c0 45 da ac 85 eb 49 48 c7 c1 80 da ac 85 48 ba 00 00 00 00 00 fc ff df 48 8d 41 05 48 89 c6 48 c1 ee 03 0f b6 14 16 <48> 89 c6 83 e6 07 40 38 f2 7f 08 84 d2 0f 85 16 17 00 00 0f b6 51 RSP: 0018:ffff88806cf09588 EFLAGS: 00000217 RAX: ffffffff8678d2d5 RBX: 0000000000000002 RCX: ffffffff8678d2d0 RDX: 0000000000000000 RSI: 1ffffffff0cf1a5a RDI: ffffffff864513b0 RBP: ffff88806cf096a0 R08: ffffffff8678d2d0 R09: 0000000000000000 R10: 000000000003c001 R11: 00000000000065fc R12: ffff88806cf096a8 R13: ffff88806cf09690 R14: ffff88806cf09689 R15: ffff88806cf09648 FS: 00007faa0dcb0700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c821000 CR3: 000000001ac9c000 CR4: 0000000000350ef0 Call Trace: __unwind_start+0x517/0x7c0 arch_stack_walk+0x63/0xf0 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 __alloc_skb+0x2ad/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 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 f4 ac ab ff 4d 85 ed 74 06 e8 1a 75 d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff888016baf6f0 EFLAGS: 00000246 RAX: 0000000000226b3d RBX: ffffea0000397dc0 RCX: 1ffffffff0fe04ae RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff818477d6 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fde3e9 R10: ffffffff87ef1f4f R11: 0000000000000000 R12: ffff88806cf40390 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88800e5f7de0 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 alloc_buffer_head+0x24/0x130 folio_alloc_buffers+0x289/0x540 create_empty_buffers+0x30/0x460 ext4_block_write_begin+0x996/0xb20 ext4_da_write_begin+0x30e/0x880 generic_perform_write+0x284/0x7e0 ext4_buffered_write_iter+0x11d/0x3c0 ext4_file_write_iter+0x95e/0x18e0 vfs_write+0xbdb/0x10a0 ksys_write+0x122/0x240 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faa1073ab19 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:00007faa0dcb0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007faa1084df60 RCX: 00007faa1073ab19 RDX: 00000000000292e9 RSI: 0000000020000080 RDI: 0000000000000009 RBP: 00007faa10794f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6ede8acf R14: 00007faa0dcb0300 R15: 0000000000022000 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-rc1-next-20241205 #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:ffff88806ce099e0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8487108f RDX: fffffbfff0c1b94d RSI: 0000000000000004 RDI: ffffffff860dca60 RBP: ffffffff860dca60 R08: 0000000000000000 R09: fffffbfff0c1b94c R10: ffffffff860dca63 R11: 0000000000000001 R12: 1ffff1100d9c133d R13: 0000000000000003 R14: fffffbfff0c1b94c R15: ffff88806ce09a18 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056159009fb80 CR3: 000000000e902000 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/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: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 95 3d 00 0f 1f 44 00 00 fb f4 e9 fc 2e 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85a07e10 EFLAGS: 00000206 RAX: 000000000019274b RBX: 0000000000000000 RCX: ffffffff8484e837 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812b180a RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9c6cba R10: ffff88806ce365d3 R11: 0000000000000000 R12: ffffffff863fae90 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 ---------------- Code disassembly (best guess): 0: 85 48 c7 test %ecx,-0x39(%rax) 3: c0 45 da ac rolb $0xac,-0x26(%rbp) 7: 85 eb test %ebp,%ebx 9: 49 rex.WB a: 48 c7 c1 80 da ac 85 mov $0xffffffff85acda80,%rcx 11: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 18: fc ff df 1b: 48 8d 41 05 lea 0x5(%rcx),%rax 1f: 48 89 c6 mov %rax,%rsi 22: 48 c1 ee 03 shr $0x3,%rsi 26: 0f b6 14 16 movzbl (%rsi,%rdx,1),%edx * 2a: 48 89 c6 mov %rax,%rsi <-- trapping instruction 2d: 83 e6 07 and $0x7,%esi 30: 40 38 f2 cmp %sil,%dl 33: 7f 08 jg 0x3d 35: 84 d2 test %dl,%dl 37: 0f 85 16 17 00 00 jne 0x1753 3d: 0f .byte 0xf 3e: b6 51 mov $0x51,%dh