9pnet: Insufficient options for proto=fd audit: type=1400 audit(1721540245.352:11): avc: denied { read } for pid=4009 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.2:4022] Modules linked in: irq event stamp: 5949249 hardirqs last enabled at (5949248): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5949249): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (5940708): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5940737): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4022 Comm: syz-executor.2 Not tainted 5.10.222 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__x86_indirect_thunk_rbx+0x0/0x20 Code: 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 14 24 e9 4b 02 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 1c 24 e9 2b 02 00 00 66 RSP: 0018:ffff88806cf09730 EFLAGS: 00000282 RAX: ffffffff8400011f RBX: ffffffff81300720 RCX: 1ffff1100d9e1201 RDX: 1ffff1100d9e12f0 RSI: ffffffff8400011f RDI: ffff88806cf097f0 RBP: ffff88806cf097c0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9e12d4 R12: ffff88806cf097f0 R13: 0000000000000000 R14: ffff888017f08000 R15: 0000000000000200 FS: 00007f6518507700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001340 CR3: 00000000484ee000 CR4: 0000000000350ee0 Call Trace: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:706 ---------------- Code disassembly (best guess): 0: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 7: 00 00 00 a: e8 07 00 00 00 callq 0x16 f: f3 90 pause 11: 0f ae e8 lfence 14: eb f9 jmp 0xf 16: 48 89 14 24 mov %rdx,(%rsp) 1a: e9 4b 02 00 00 jmpq 0x26a 1f: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 26: 00 00 00 00 * 2a: e8 07 00 00 00 callq 0x36 <-- trapping instruction 2f: f3 90 pause 31: 0f ae e8 lfence 34: eb f9 jmp 0x2f 36: 48 89 1c 24 mov %rbx,(%rsp) 3a: e9 2b 02 00 00 jmpq 0x26a 3f: 66 data16