Bluetooth: hci7: unexpected event 0x31 length: 7 > 6 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:4681] Modules linked in: irq event stamp: 4427753 hardirqs last enabled at (4427752): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4427753): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4178342): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4178345): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 4681 Comm: syz-executor.5 Not tainted 6.1.0-rc8-next-20221207 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kmem_cache_free+0x7f/0x610 Code: 08 48 8b 05 73 d5 c5 03 49 39 dc 0f 83 8a 01 00 00 4c 01 e0 48 8b 0d 50 f5 ac 03 48 c1 e8 0c 48 c1 e0 06 48 01 c8 48 8b 50 08 <49> 89 c4 f6 c2 01 0f 85 ea 02 00 00 0f 1f 44 00 00 49 8b 04 24 f6 RSP: 0018:ffff88806cf09df8 EFLAGS: 00000282 RAX: ffffea00007b5c80 RBX: ffff88801ed72a00 RCX: ffffea0000000000 RDX: ffffea00007b5c01 RSI: 0000000000000101 RDI: 0000000000000000 RBP: ffff88806cf09e30 R08: 0000000000000000 R09: ffffffff85d07c17 R10: fffffbfff0ba0f82 R11: 0000000000000001 R12: ffff88809ed72a00 R13: ffffffff8189f2c6 R14: ffff88801ed72c30 R15: ffff888008c9a140 FS: 00007fc32d29d700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f879aa3e0f0 CR3: 000000000e372000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: i_callback+0x46/0x70 rcu_core+0x7e2/0x2090 __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:lock_acquire+0x1df/0x530 Code: 03 b8 ff ff ff ff 65 0f c1 05 65 51 d6 7e 83 f8 01 0f 85 c8 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff88803ff97858 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff11007ff2f0d RCX: 00000000ef9e7a6d RDX: 1ffff11008d72483 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8762e8c7 R10: fffffbfff0ec5d18 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff856085a0 R15: 0000000000000000 __is_insn_slot_addr+0x41/0x250 kernel_text_address+0x5b/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_kmalloc+0x82/0x90 bpf_prog_alloc_no_stats+0xf0/0x350 bpf_prog_alloc+0x30/0x210 bpf_prog_create_from_user+0xb1/0x2f0 do_seccomp+0x348/0x2860 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fc32fd27b19 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:00007fc32d29d188 EFLAGS: 00000246 ORIG_RAX: 000000000000013d RAX: ffffffffffffffda RBX: 00007fc32fe3af60 RCX: 00007fc32fd27b19 RDX: 0000000020000040 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 00007fc32fd81f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff9ad2bbbf R14: 00007fc32d29d300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 08 48 8b or %cl,-0x75(%rax) 3: 05 73 d5 c5 03 add $0x3c5d573,%eax 8: 49 39 dc cmp %rbx,%r12 b: 0f 83 8a 01 00 00 jae 0x19b 11: 4c 01 e0 add %r12,%rax 14: 48 8b 0d 50 f5 ac 03 mov 0x3acf550(%rip),%rcx # 0x3acf56b 1b: 48 c1 e8 0c shr $0xc,%rax 1f: 48 c1 e0 06 shl $0x6,%rax 23: 48 01 c8 add %rcx,%rax 26: 48 8b 50 08 mov 0x8(%rax),%rdx * 2a: 49 89 c4 mov %rax,%r12 <-- trapping instruction 2d: f6 c2 01 test $0x1,%dl 30: 0f 85 ea 02 00 00 jne 0x320 36: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 3b: 49 8b 04 24 mov (%r12),%rax 3f: f6 .byte 0xf6