syz-executor.5[8561]: memfd_create() called without MFD_EXEC or MFD_NOEXEC_SEAL set loop5: detected capacity change from 0 to 40 watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.4:8482] Modules linked in: irq event stamp: 40476577 hardirqs last enabled at (40476576): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (40476577): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (40447068): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (40447071): [] irq_exit_rcu+0x93/0xc0 CPU: 1 PID: 8482 Comm: syz-executor.4 Not tainted 6.5.0-rc6-next-20230818 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:write_comp_data+0x12/0x90 Code: 0f 03 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 f1 49 89 d2 49 89 f8 65 8b 05 68 02 b6 7e 89 c6 <81> e6 00 01 00 00 65 48 8b 14 25 80 8d 03 00 a9 00 01 ff 00 74 0e RSP: 0018:ffff88806cf09858 EFLAGS: 00000246 RAX: 0000000000000101 RBX: ffff88806cf098e0 RCX: ffffffff8113bc26 RDX: 0000000000000002 RSI: 0000000000000101 RDI: 0000000000000001 RBP: ffffffff864b73c6 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000002 R13: ffffffff864b73cb R14: ffff88806cf09921 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005584525c82f8 CR3: 000000000e63e000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0x5c6/0x25d0 arch_stack_walk+0xe6/0x160 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2b/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0x10d/0x4d0 kfree_skbmem+0xef/0x1b0 consume_skb+0x126/0x2e0 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x107/0x1b0 Code: 39 45 28 75 5e 48 c7 45 28 00 00 00 00 48 c7 c6 62 cb 82 81 48 89 ef e8 b7 d7 ab ff 48 85 db 74 06 e8 bd 02 d2 ff fb 4d 85 f6 <74> 1e 5b 4c 89 f6 5d 4c 89 e7 41 5c 41 5d 41 5e 41 5f e9 12 fa ff RSP: 0018:ffff88802f96f6e0 EFLAGS: 00000246 RAX: 00000000025b0d4d RBX: 0000000000000200 RCX: ffffffff812e00af RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8182cb83 RBP: ffff88806cf3e0e0 R08: 0000000000000001 R09: fffffbfff0ee9f6d R10: ffffffff8774fb6f R11: 0000000000000001 R12: ffff88800844f780 R13: ffffea0000256bc0 R14: 0000000000000000 R15: 0000000000000003 qlist_free_all+0x6d/0x190 kasan_quarantine_reduce+0x199/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc+0x17b/0x390 __create_object+0x3c/0xc90 kmem_cache_alloc_node+0x23d/0x3b0 __alloc_skb+0x28c/0x330 mgmt_send_event+0x43/0x180 mgmt_index_removed+0x1c6/0x350 hci_unregister_dev+0x34a/0x430 vhci_release+0x80/0x100 __fput+0x400/0xa70 task_work_run+0x174/0x280 do_exit+0xa92/0x2740 do_group_exit+0xd4/0x2a0 get_signal+0x2693/0x2720 arch_do_signal_or_restart+0x81/0x790 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f1b780c1b19 Code: Unable to access opcode bytes at 0x7f1b780c1aef. RSP: 002b:00007f1b75637188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000003 RBX: 00007f1b781d4f60 RCX: 00007f1b780c1b19 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000000000000000a RBP: 00007f1b7811bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffec3c631cf R14: 00007f1b75637300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop 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: 49 89 f1 mov %rsi,%r9 19: 49 89 d2 mov %rdx,%r10 1c: 49 89 f8 mov %rdi,%r8 1f: 65 8b 05 68 02 b6 7e mov %gs:0x7eb60268(%rip),%eax # 0x7eb6028e 26: 89 c6 mov %eax,%esi * 28: 81 e6 00 01 00 00 and $0x100,%esi <-- trapping instruction 2e: 65 48 8b 14 25 80 8d mov %gs:0x38d80,%rdx 35: 03 00 37: a9 00 01 ff 00 test $0xff0100,%eax 3c: 74 0e je 0x4c