loop5: detected capacity change from 0 to 264192 watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.6:5642] Modules linked in: irq event stamp: 216616 hardirqs last enabled at (216615): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (216616): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (216558): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (216553): [] irq_exit_rcu+0x93/0xc0 CPU: 1 PID: 5642 Comm: syz-executor.6 Not tainted 6.4.0-rc6-next-20230616 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:skb_splice_from_iter+0x7b/0xb50 Code: 84 24 90 00 00 00 28 85 22 85 48 c7 84 24 98 00 00 00 60 14 67 83 c7 00 f1 f1 f1 f1 c7 40 04 00 f2 f2 f2 c7 40 08 00 f2 f2 f2 40 14 f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 60 01 RSP: 0018:ffff8880158f7188 EFLAGS: 00000286 RAX: ffffed1002b1ee42 RBX: dffffc0000000000 RCX: 0000000000000cc0 RDX: 0000000000000001 RSI: ffff8880158f7738 RDI: ffff888015a67b40 RBP: 0000000008000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000008000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff888015a67b40 R14: ffff888015a67b40 R15: ffff8880158f7738 FS: 00007fa464139700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556d0dc58 CR3: 000000001cd98000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __ip6_append_data.isra.0+0x1715/0x4560 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+0xb6b/0x1370 __x64_sys_sendfile64+0x1d5/0x210 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fa466be4b19 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:00007fa464139188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fa466cf8020 RCX: 00007fa466be4b19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006 RBP: 00007fa466c3ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 000000000001a000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc1dcfb7df R14: 00007fa464139300 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: 84 24 90 test %ah,(%rax,%rdx,4) 3: 00 00 add %al,(%rax) 5: 00 28 add %ch,(%rax) 7: 85 22 test %esp,(%rdx) 9: 85 48 c7 test %ecx,-0x39(%rax) c: 84 24 98 test %ah,(%rax,%rbx,4) f: 00 00 add %al,(%rax) 11: 00 60 14 add %ah,0x14(%rax) 14: 67 83 c7 00 addr32 add $0x0,%edi 18: f1 icebp 19: f1 icebp 1a: f1 icebp 1b: f1 icebp 1c: c7 40 04 00 f2 f2 f2 movl $0xf2f2f200,0x4(%rax) 23: c7 40 08 00 f2 f2 f2 movl $0xf2f2f200,0x8(%rax) * 2a: c7 40 14 f3 f3 f3 f3 movl $0xf3f3f3f3,0x14(%rax) <-- trapping instruction 31: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax 38: 00 00 3a: 48 rex.W 3b: 89 .byte 0x89 3c: 84 24 60 test %ah,(%rax,%riz,2) 3f: 01 .byte 0x1