loop4: detected capacity change from 0 to 40 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.7:4328] Modules linked in: irq event stamp: 2448737 hardirqs last enabled at (2448736): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2448737): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2436144): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2436147): [] irq_exit_rcu+0x94/0xc0 CPU: 1 UID: 0 PID: 4328 Comm: syz-executor.7 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:arch_stack_walk+0x8d/0xf0 Code: 8b 95 68 ff ff ff 85 d2 75 24 eb 36 4c 89 e7 e8 49 51 77 03 84 c0 74 2a 48 8d bd 68 ff ff ff e8 09 75 07 00 8b 85 68 ff ff ff <85> c0 74 14 48 8d bd 68 ff ff ff e8 63 72 07 00 48 89 c6 48 85 c0 RSP: 0018:ffff88806cf095c8 EFLAGS: 00000296 RAX: 0000000000000002 RBX: ffffffff813e8f70 RCX: 0000000000000001 RDX: ffff88806cf09958 RSI: ffff88806cf09930 RDI: ffff88806cf095d8 RBP: ffff88806cf09660 R08: 0000000000000001 R09: ffff88806cf09608 R10: 000000000003c001 R11: 0000000000023a71 R12: ffff88806cf09690 R13: 0000000000000000 R14: ffff888015100000 R15: 0000000000092820 FS: 00007fcdd9974700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2db22000 CR3: 000000000c604000 CR4: 0000000000350ef0 Call Trace: stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7a0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2cb/0x5d0 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x80 Code: c0 e9 dc f4 32 03 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 34 24 <65> 48 8b 15 90 2a b2 7e 65 8b 05 91 2a b2 7e a9 00 01 ff 00 74 27 RSP: 0018:ffff88801aa2f898 EFLAGS: 00000206 RAX: 00000000000005e2 RBX: ffffffff84cd156a RCX: ffffc90009a60000 RDX: 0000000000040000 RSI: ffffffff847f3e18 RDI: 0000000000000001 RBP: ffff88800cba6290 R08: 0000000000000004 R09: ffffed1001974c50 R10: 0000000000000070 R11: 0000000000000090 R12: 0000000000000070 R13: ffff88800cba6299 R14: ffffffff84cd1560 R15: 0000000000000009 string+0x148/0x3e0 vsnprintf+0x99c/0x1620 snprintf+0xbf/0x100 __set_print_fmt+0x34a/0x980 traceprobe_set_print_fmt+0x74/0xd0 create_local_trace_kprobe+0x1f9/0x410 perf_kprobe_init+0x119/0x210 perf_kprobe_event_init+0xfc/0x1d0 perf_try_init_event+0x13a/0xc40 perf_event_alloc.part.0+0x10a3/0x3c30 __do_sys_perf_event_open+0x4cb/0x2b60 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcddc3feb19 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:00007fcdd9974188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fcddc511f60 RCX: 00007fcddc3feb19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00007fcddc458f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffda7c91b4f R14: 00007fcdd9974300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 loop4: detected capacity change from 0 to 40 loop4: detected capacity change from 0 to 40 loop4: detected capacity change from 0 to 40 syz-executor.3 uses obsolete (PF_INET,SOCK_PACKET) SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65380 sclass=netlink_xfrm_socket pid=58 comm=kworker/0:2 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65380 sclass=netlink_xfrm_socket pid=58 comm=kworker/0:2 Bluetooth: hci4: command tx timeout Bluetooth: hci4: command tx timeout ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= Bluetooth: hci4: command tx timeout ---------------- Code disassembly (best guess): 0: 8b 95 68 ff ff ff mov -0x98(%rbp),%edx 6: 85 d2 test %edx,%edx 8: 75 24 jne 0x2e a: eb 36 jmp 0x42 c: 4c 89 e7 mov %r12,%rdi f: e8 49 51 77 03 callq 0x377515d 14: 84 c0 test %al,%al 16: 74 2a je 0x42 18: 48 8d bd 68 ff ff ff lea -0x98(%rbp),%rdi 1f: e8 09 75 07 00 callq 0x7752d 24: 8b 85 68 ff ff ff mov -0x98(%rbp),%eax * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 74 14 je 0x42 2e: 48 8d bd 68 ff ff ff lea -0x98(%rbp),%rdi 35: e8 63 72 07 00 callq 0x7729d 3a: 48 89 c6 mov %rax,%rsi 3d: 48 85 c0 test %rax,%rax