watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.7:4970] Modules linked in: irq event stamp: 1985635 hardirqs last enabled at (1985634): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (1985635): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (1980424): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (1980441): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 4970 Comm: syz-executor.7 Not tainted 6.12.0-rc7-next-20241115 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_access_ok+0x55/0x1d0 Code: c0 74 08 3c 03 0f 8e 4b 01 00 00 8b 0b 85 c9 74 65 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 08 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 30 01 00 00 48 8d 7b 10 4c 8b 6b 08 48 b8 00 00 00 00 00 fc RSP: 0018:ffff88806cf08e00 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88806cf08ea8 RCX: 0000000000000002 RDX: 1ffff1100d9e11d6 RSI: ffff88806cf09450 RDI: ffff88806cf08eb0 RBP: ffff88806cf09450 R08: 0000000000000001 R09: ffff88806cf08ee8 R10: 000000000003c001 R11: 00000000000ba373 R12: 0000000000000008 R13: ffff88806cf08ef0 R14: ffff88806cf09450 R15: ffff88806cf08ea8 FS: 00007f4b1e78d700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558afb622d68 CR3: 0000000035c4a000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0xc56/0x2490 arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_noprof+0x1f7/0x4b0 ieee802_11_parse_elems_full+0xec/0x15a0 ieee80211_inform_bss+0xf7/0x10b0 cfg80211_inform_single_bss_data+0x7fe/0x1c50 cfg80211_inform_bss_data+0x20f/0x3510 cfg80211_inform_bss_frame_data+0x250/0x690 ieee80211_bss_info_update+0x2f6/0xa90 ieee80211_scan_rx+0x474/0xac0 ieee80211_rx_list+0x1e38/0x2840 ieee80211_rx_napi+0xdc/0x3b0 ieee80211_handle_queued_frames+0xd9/0x130 tasklet_action_common+0x235/0x3b0 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:qlist_free_all+0xa9/0x160 Code: 03 48 01 ca 48 c1 ea 0c 48 c1 e2 06 48 03 15 9e c4 f1 03 48 8b 72 08 48 89 d1 40 f6 c6 01 0f 85 a1 00 00 00 66 90 80 79 33 f5 00 00 00 00 48 0f 45 ca 48 8b 69 08 e9 63 ff ff ff 48 83 7d 48 RSP: 0018:ffff88803f8af340 EFLAGS: 00000246 RAX: ffff8880136a9c80 RBX: ffff8880136a9c80 RCX: ffffea00004daa00 RDX: ffffea00004daa40 RSI: ffffea00004daa01 RDI: 0000000000080000 RBP: 0000000000000000 R08: ffff88800e070800 R09: 000000000010000a R10: ffffea0000381c00 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803f8af378 R14: ffff88800e070800 R15: ffff88800e070800 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+0xf6a/0x18e0 iter_file_splice_write+0xa09/0x1060 direct_splice_actor+0x192/0x7a0 splice_direct_to_actor+0x348/0x9d0 do_splice_direct+0x17a/0x250 do_sendfile+0xaf4/0xe60 __x64_sys_sendfile64+0x1d5/0x210 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4b21238b19 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:00007f4b1e78d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f4b2134c020 RCX: 00007f4b21238b19 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007f4b21292f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000100000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd906007ff R14: 00007f4b1e78d300 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 6.12.0-rc7-next-20241115 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:tick_nohz_idle_stop_tick+0x126/0xef0 Code: 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 18 0c 00 00 31 ff 4c 89 ee 48 83 83 e0 00 00 00 01 e8 fd b8 0d 00 4d 85 ed <7f> 70 e8 93 b5 0d 00 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 RSP: 0018:ffffffff85a07d48 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff88806ce2d740 RCX: ffffffff81444b63 RDX: ffffffff85a2a840 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 1ffffffff0b40fb1 R08: 0000000000000001 R09: ffffffff85a2b278 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88806ce00000 R13: 0000000000000000 R14: ffff88806ce2d800 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558afb5ec618 CR3: 000000001699c000 CR4: 0000000000350ef0 Call Trace: do_idle+0x2f5/0x3b0 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: c0 74 08 3c 03 shlb $0x3,0x3c(%rax,%rcx,1) 5: 0f 8e 4b 01 00 00 jle 0x156 b: 8b 0b mov (%rbx),%ecx d: 85 c9 test %ecx,%ecx f: 74 65 je 0x76 11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 18: fc ff df 1b: 48 8d 7b 08 lea 0x8(%rbx),%rdi 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 2a: 0f 85 30 01 00 00 jne 0x160 <-- trapping instruction 30: 48 8d 7b 10 lea 0x10(%rbx),%rdi 34: 4c 8b 6b 08 mov 0x8(%rbx),%r13 38: 48 rex.W 39: b8 00 00 00 00 mov $0x0,%eax 3e: 00 fc add %bh,%ah