watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:14159] Modules linked in: irq event stamp: 4559945 hardirqs last enabled at (4559944): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4559945): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4526618): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4526621): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 14159 Comm: syz-executor.4 Not tainted 6.2.0-rc1-next-20221226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__rate_control_send_low+0x219/0x680 Code: 48 8b 44 24 18 80 38 00 0f 85 33 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5d 08 4c 01 fb 48 89 da 48 c1 ea 03 0f b6 0c 02 <48> 89 da 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 11 04 00 00 8b RSP: 0018:ffff88806ce099d8 EFLAGS: 00000216 RAX: dffffc0000000000 RBX: ffff888045f35f38 RCX: 0000000000000000 RDX: 1ffff11008be6be7 RSI: ffffffff8404ebff RDI: 0000000000000007 RBP: ffff888045f333c8 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000000 FS: 00007f62a43ea700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30421000 CR3: 000000003672a000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rate_control_send_low+0x220/0x630 rate_control_get_rate+0x18f/0x510 ieee80211_beacon_get_finish+0x43e/0x610 __ieee80211_beacon_get+0x536/0x1310 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xc70 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x115/0x1c0 Code: 39 43 28 75 61 48 c7 43 28 00 00 00 00 48 c7 c6 30 5f 7c 81 48 89 df e8 e9 79 af ff 48 85 ed 74 06 e8 ef 91 d3 ff fb 4d 85 ed <74> 21 5b 4c 89 ee 5d 4c 89 e7 41 5c 41 5d 41 5e 41 5f e9 54 fa ff RSP: 0018:ffff888043137450 EFLAGS: 00000246 RAX: 00000000000ff921 RBX: ffff88806ce41f20 RCX: ffffffff812b3b2f RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000200 R08: 0000000000000001 R09: ffffffff8763291f R10: fffffbfff0ec6523 R11: 0000000000000001 R12: ffff888008e713c0 R13: 0000000000000000 R14: ffffea0000f50800 R15: 0000000000000002 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x196/0x230 __kasan_slab_alloc+0x4c/0x70 __kmem_cache_alloc_node+0x1ec/0x400 __kmalloc+0x46/0xc0 ext4_ext_remove_space+0x1593/0x40d0 ext4_ext_truncate+0x330/0x3f0 ext4_truncate+0xe2a/0x13d0 ext4_setattr+0x1c73/0x2700 notify_change+0xca5/0x1400 do_truncate+0x143/0x200 path_openat+0x20cc/0x29b0 do_filp_open+0x1ba/0x410 do_sys_openat2+0x171/0x4c0 __x64_sys_creat+0xcd/0x120 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f62a6e95b19 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:00007f62a43ea188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f62a6fa9020 RCX: 00007f62a6e95b19 RDX: 0000000000000000 RSI: 0000000000000119 RDI: 0000000020000240 RBP: 00007f62a6eeff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffcd93208f R14: 00007f62a43ea300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 48 8b 44 24 18 mov 0x18(%rsp),%rax 5: 80 38 00 cmpb $0x0,(%rax) 8: 0f 85 33 04 00 00 jne 0x441 e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 48 8b 5d 08 mov 0x8(%rbp),%rbx 1c: 4c 01 fb add %r15,%rbx 1f: 48 89 da mov %rbx,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 0c 02 movzbl (%rdx,%rax,1),%ecx * 2a: 48 89 da mov %rbx,%rdx <-- trapping instruction 2d: 83 e2 07 and $0x7,%edx 30: 83 c2 03 add $0x3,%edx 33: 38 ca cmp %cl,%dl 35: 7c 08 jl 0x3f 37: 84 c9 test %cl,%cl 39: 0f 85 11 04 00 00 jne 0x450 3f: 8b .byte 0x8b