Bluetooth: hci2: command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.4:32044] Modules linked in: irq event stamp: 183780 hardirqs last enabled at (183779): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (183780): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (183676): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (183667): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 32044 Comm: syz-executor.4 Not tainted 6.4.0-rc6-next-20230614 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_pc+0x57/0x70 Code: 9c 14 00 00 85 c0 74 2b 8b 82 78 14 00 00 83 f8 02 75 20 48 8b 8a 80 14 00 00 8b 92 7c 14 00 00 48 8b 01 48 83 c0 01 48 39 c2 <76> 07 48 89 01 48 89 34 c1 e9 9b c3 06 03 66 66 2e 0f 1f 84 00 00 RSP: 0018:ffff888032ef7320 EFLAGS: 00000246 RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc900039a8000 RDX: 0000000000040000 RSI: ffffffff83c3426f RDI: 0000000000000006 RBP: 0000000000000028 R08: 0000000000000006 R09: 000000000000ffd8 R10: 0000000000000001 R11: 0000000000000001 R12: 000000000000ffd8 R13: dffffc0000000000 R14: ffff8880411603c0 R15: 0000000000000001 FS: 00007fdac3fbb700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa1d359e3a4 CR3: 000000000caee000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __ip6_append_data.isra.0+0xc2f/0x4560 ip6_append_data+0x1d4/0x530 rawv6_sendmsg+0x156e/0x3dc0 inet_sendmsg+0x121/0x150 sock_sendmsg+0x19b/0x200 splice_to_socket+0x949/0xe10 direct_splice_actor+0x119/0x180 splice_direct_to_actor+0x349/0x9d0 do_splice_direct+0x1bb/0x290 do_sendfile+0xb4b/0x12f0 __x64_sys_sendfile64+0x1d5/0x210 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fdac6a66b19 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:00007fdac3fbb188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fdac6b7a020 RCX: 00007fdac6a66b19 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000007 RBP: 00007fdac6ac0f6d R08: 0000000000000000 R09: 0000000000000000 R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffff23fe56f R14: 00007fdac3fbb300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 Bluetooth: hci0: command 0x0406 tx timeout ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 00 00 add %al,(%rax) 2: 85 c0 test %eax,%eax 4: 74 2b je 0x31 6: 8b 82 78 14 00 00 mov 0x1478(%rdx),%eax c: 83 f8 02 cmp $0x2,%eax f: 75 20 jne 0x31 11: 48 8b 8a 80 14 00 00 mov 0x1480(%rdx),%rcx 18: 8b 92 7c 14 00 00 mov 0x147c(%rdx),%edx 1e: 48 8b 01 mov (%rcx),%rax 21: 48 83 c0 01 add $0x1,%rax 25: 48 39 c2 cmp %rax,%rdx * 28: 76 07 jbe 0x31 <-- trapping instruction 2a: 48 89 01 mov %rax,(%rcx) 2d: 48 89 34 c1 mov %rsi,(%rcx,%rax,8) 31: e9 9b c3 06 03 jmpq 0x306c3d1 36: 66 data16 37: 66 data16 38: 2e cs 39: 0f .byte 0xf 3a: 1f (bad) 3b: 84 00 test %al,(%rax)