loop3: detected capacity change from 0 to 128 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:14017] Modules linked in: irq event stamp: 9601071 hardirqs last enabled at (9601070): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (9601071): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (9586914): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (9586917): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 14017 Comm: syz-executor.5 Not tainted 6.1.0-rc7-next-20221201 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0xb/0x70 Code: c0 e9 8d 39 f8 02 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 05 ad 78 ba 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 89 03 00 a9 RSP: 0018:ffff88806cf096a0 EFLAGS: 00000297 RAX: 0000000000000102 RBX: ffffffff8564e040 RCX: 0000000000000100 RDX: 0000000000000000 RSI: ffffffff81498cb7 RDI: ffff88804abb9eb4 RBP: 00007f787317ab19 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000102 R11: 0000000000038001 R12: 00007f787317ab19 R13: 0000000000000000 R14: ffff88804abb9ac0 R15: 0000000000000a20 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7f76a41e98 CR3: 0000000005426000 CR4: 0000000000350ee0 Call Trace: __is_insn_slot_addr+0x21/0x250 kernel_text_address+0x48/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc_node+0x1f5/0x420 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 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:preempt_count_sub+0x29/0x160 Code: 90 f3 0f 1e fa 48 c7 c0 40 77 9b 87 53 89 fb 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 <38> d0 7c 08 84 d2 0f 85 f0 00 00 00 8b 0d 65 8a 79 06 85 c9 75 1b RSP: 0018:ffff888010b5f450 EFLAGS: 00000206 RAX: 0000000000000003 RBX: 0000000000000001 RCX: 1ffffffff0f36ee8 RDX: 0000000000000004 RSI: ffff888010b5fba0 RDI: 0000000000000001 RBP: ffff888010b58000 R08: ffffffff860dcfac R09: ffffffff860dcfb0 R10: ffffed100216bea9 R11: ffff888010b5f520 R12: ffff888010b5f521 R13: ffff888010b5f540 R14: ffff888010b5f4e0 R15: 0000000000000001 unwind_next_frame+0xd8d/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 kmem_cache_free+0xc1/0x610 unlink_anon_vmas+0x3b7/0x720 free_pgtables+0x251/0x420 exit_mmap+0x1b8/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f787317ab19 Code: Unable to access opcode bytes at 0x7f787317aaef. RSP: 002b:00007f78706f0218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f787328df68 RCX: 00007f787317ab19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f787328df68 RBP: 00007f787328df60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f787328df6c R13: 00007ffee8f2f40f R14: 00007f78706f0300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 6.1.0-rc7-next-20221201 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Workqueue: events_unbound io_ring_exit_work RIP: 0010:__lock_acquire+0x143d/0x5e70 Code: 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 2e 3d 00 00 41 0f b7 5d f8 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 e8 06 <48> 8d 3c c5 40 a8 62 87 e8 26 7b 51 00 48 0f a3 1d 5e e6 36 06 0f RSP: 0018:ffff888008e2f7f8 EFLAGS: 00000013 RAX: 0000000000000015 RBX: 0000000000000566 RCX: ffffffff812bbc6b RDX: 1ffff110011c413a RSI: 0000000000000008 RDI: ffff888008e209d0 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8762a8ef R10: fffffbfff0ec551d R11: 0000000000000001 R12: ffff888008e20000 R13: ffff888008e209d8 R14: ffff888008e20960 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005601e69fb0a0 CR3: 00000000167e2000 CR4: 0000000000350ef0 Call Trace: lock_acquire+0x1a6/0x530 _raw_spin_lock+0x2e/0x40 io_poll_remove_all_table+0xc3/0x267 io_poll_remove_all+0x42/0x4f io_uring_try_cancel_requests+0xa01/0xa93 io_ring_exit_work+0x145/0xc13 process_one_work+0xa17/0x16a0 worker_thread+0x63b/0x1260 kthread+0x2f1/0x3a0 ret_from_fork+0x2c/0x50 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e9 8d 39 f8 02 jmpq 0x2f83992 5: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) c: 00 00 e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: f3 0f 1e fa endbr64 22: 65 8b 05 ad 78 ba 7e mov %gs:0x7eba78ad(%rip),%eax # 0x7eba78d6 * 29: 89 c1 mov %eax,%ecx <-- trapping instruction 2b: 48 8b 34 24 mov (%rsp),%rsi 2f: 81 e1 00 01 00 00 and $0x100,%ecx 35: 65 48 8b 14 25 00 89 mov %gs:0x38900,%rdx 3c: 03 00 3e: a9 .byte 0xa9