loop7: detected capacity change from 0 to 40 nfs: Unknown parameter '/dev/autofs' nfs: Unknown parameter '/dev/autofs' watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.3:19744] Modules linked in: irq event stamp: 5577113 hardirqs last enabled at (5577112): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5577113): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5570100): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (5570103): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 19744 Comm: syz-executor.3 Not tainted 6.1.0-next-20221219 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__do_softirq+0x40c/0x8f9 Code: e8 e9 81 d5 fc 65 ff 0d ea fb c0 7b 0f 85 d8 fd ff ff 0f 1f 44 00 00 e9 ce fd ff ff 65 ff 05 d3 fb c0 7b 48 8b 05 e4 bb 8b 01 4f 9c f0 fc 85 c0 0f 84 40 02 00 00 65 ff 0d b8 fb c0 7b 0f 85 RSP: 0018:ffff88806ce09f70 EFLAGS: 00000203 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff84428b22 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff85d09290 RBP: ffffffff8540a0f8 R08: 0000000000000000 R09: ffffffff85d09297 R10: fffffbfff0ba1252 R11: 0000000000000001 R12: 0000000000000007 R13: 0000000000000101 R14: 0000000000000007 R15: 0000000000000007 FS: 00007f90d395b700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 000000003d01a000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __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:__sanitizer_cov_trace_pc+0x50/0x70 Code: 0e 85 c9 74 35 8b 82 0c 14 00 00 85 c0 74 2b 8b 82 e8 13 00 00 83 f8 02 75 20 48 8b 8a f0 13 00 00 8b 92 ec 13 00 00 48 8b 01 <48> 83 c0 01 48 39 c2 76 07 48 89 01 48 89 34 c1 e9 6f 6a f9 02 66 RSP: 0018:ffff888040ad7710 EFLAGS: 00000246 RAX: 0000000000025663 RBX: 0000000000000005 RCX: ffffc90011c91000 RDX: 0000000000040000 RSI: ffffffff81a3340a RDI: 0000000000000005 RBP: 000000000000001e R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000002 R13: ffff88800e383cf8 R14: ffffffff84d70ce0 R15: 000000000000001e namecmp+0x4a/0x60 insert_header+0x3ce/0xfa0 __register_sysctl_table+0x6fd/0x1150 ipv4_sysctl_init_net+0x100/0x380 ops_init+0xbb/0x680 setup_net+0x40c/0x9d0 copy_net_ns+0x31c/0x760 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x3b7/0x4a0 copy_process+0x29e3/0x7220 kernel_clone+0xeb/0x950 __do_sys_clone3+0x1d9/0x370 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f90d6406b19 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:00007f90d395b188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f90d651a020 RCX: 00007f90d6406b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f90d6460f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff1d09d13f R14: 00007f90d395b300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: e8 e9 81 d5 fc callq 0xfcd581ee 5: 65 ff 0d ea fb c0 7b decl %gs:0x7bc0fbea(%rip) # 0x7bc0fbf6 c: 0f 85 d8 fd ff ff jne 0xfffffdea 12: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 17: e9 ce fd ff ff jmpq 0xfffffdea 1c: 65 ff 05 d3 fb c0 7b incl %gs:0x7bc0fbd3(%rip) # 0x7bc0fbf6 23: 48 8b 05 e4 bb 8b 01 mov 0x18bbbe4(%rip),%rax # 0x18bbc0e * 2a: e8 4f 9c f0 fc callq 0xfcf09c7e <-- trapping instruction 2f: 85 c0 test %eax,%eax 31: 0f 84 40 02 00 00 je 0x277 37: 65 ff 0d b8 fb c0 7b decl %gs:0x7bc0fbb8(%rip) # 0x7bc0fbf6 3e: 0f .byte 0xf 3f: 85 .byte 0x85