Bluetooth: hci4: command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.7:9681] Modules linked in: irq event stamp: 6728671 hardirqs last enabled at (6728670): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (6728671): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (6701950): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (6701953): [] irq_exit_rcu+0x93/0xc0 CPU: 1 PID: 9681 Comm: syz-executor.7 Not tainted 6.5.0-rc6-next-20230816 #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 09 41 0f 03 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 fd f0 b5 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 80 8d 03 00 a9 RSP: 0018:ffff88806cf099c8 EFLAGS: 00000202 RAX: 0000000000000103 RBX: ffff88806cf09a90 RCX: ffffffff8113b43a RDX: ffff888018e50000 RSI: 0000000000000100 RDI: 0000000000000005 RBP: ffff88803e5ffc60 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000008 R13: 0000000000000001 R14: ffff88803e5ffc60 R15: ffffffff864e6726 FS: 00007efe49f7f700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f77c1cb5718 CR3: 0000000015862000 CR4: 0000000000350ee0 Call Trace: stack_access_ok+0x54/0x260 unwind_next_frame+0xd01/0x25d0 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 rcu_core+0x8e1/0x28f0 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:lock_acquire+0x1c7/0x4c0 Code: ff ff 48 83 c4 28 65 0f c1 05 c5 d5 d3 7e 83 f8 01 0f 85 8f 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:ffff88803e5ff978 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff11007cbff31 RCX: 0000000000000002 RDX: 1ffff110031ca13d RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff0f1f0ea R10: ffffffff878f8757 R11: 0000000000000005 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff854ca718 R15: 0000000000000000 _raw_spin_lock+0x2b/0x40 pgd_free+0x4c/0x230 __mmdrop+0xd3/0x440 finish_task_switch.isra.0+0x470/0x830 __schedule+0x9b1/0x2b00 __cond_resched+0x46/0x70 down_write_nested+0x76/0x1f0 alloc_super+0x22e/0xae0 sget_fc+0x12d/0x920 get_tree_keyed+0x59/0x1c0 vfs_get_tree+0x92/0x360 vfs_cmd_create+0x119/0x300 __do_sys_fsconfig+0xa0e/0xb10 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x73/0xdd RIP: 0033:0x7efe4ca09b19 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:00007efe49f7f188 EFLAGS: 00000246 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 00007efe4cb1cf60 RCX: 00007efe4ca09b19 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000006 RBP: 00007efe4ca63f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe64469ddf R14: 00007efe49f7f300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e9 09 41 0f 03 jmpq 0x30f410e 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 fd f0 b5 7e mov %gs:0x7eb5f0fd(%rip),%eax # 0x7eb5f126 * 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 80 8d mov %gs:0x38d80,%rdx 3c: 03 00 3e: a9 .byte 0xa9