------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at net/ipv4/af_inet.c:154 inet_sock_destruct+0x6df/0x8a0 net/ipv4/af_inet.c:154 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.3.0-syzkaller-13027-g1a5304fecee5 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:inet_sock_destruct+0x6df/0x8a0 net/ipv4/af_inet.c:154 Code: ff e8 65 e3 e1 f8 0f 0b e9 07 fe ff ff e8 59 e3 e1 f8 0f 0b e9 3f fe ff ff e8 4d e3 e1 f8 0f 0b e9 95 fd ff ff e8 41 e3 e1 f8 <0f> 0b e9 9f fe ff ff e8 05 aa 34 f9 e9 7a fc ff ff 4c 89 e7 e8 38 RSP: 0018:ffffc90000007c48 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000ffff9000 RCX: 0000000000000100 RDX: ffffffff8c495780 RSI: ffffffff88a27a9f RDI: 0000000000000005 RBP: ffff88801f41f2c0 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffff9000 R11: 000000000000006c R12: ffff88801f41f2e8 R13: ffff88801f41f534 R14: ffff88801f41f340 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000040 CR3: 000000000c571000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sk_destruct+0x4d/0x770 net/core/sock.c:2130 sk_destruct net/core/sock.c:2178 [inline] __sk_free+0x175/0x460 net/core/sock.c:2189 sk_free+0x7c/0xa0 net/core/sock.c:2200 sock_put include/net/sock.h:1968 [inline] tcp_write_timer+0x24b/0x2b0 net/ipv4/tcp_timer.c:644 call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700 expire_timers+0x29b/0x4b0 kernel/time/timer.c:1751 __run_timers kernel/time/timer.c:2022 [inline] __run_timers kernel/time/timer.c:1995 [inline] run_timer_softirq+0x326/0x910 kernel/time/timer.c:2035 __do_softirq+0x1d4/0x905 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x114/0x190 kernel/softirq.c:650 irq_exit_rcu+0x9/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x97/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline] RIP: 0010:default_idle+0xf/0x20 arch/x86/kernel/process.c:711 Code: 89 07 49 c7 c0 08 00 00 00 4d 29 c8 4c 01 c7 4c 29 c2 e9 76 ff ff ff cc cc cc cc f3 0f 1e fa 66 90 0f 00 2d 43 1a 37 00 fb f4 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 65 RSP: 0018:ffffffff8c407e08 EFLAGS: 00000242 RAX: 0000000000b44413 RBX: 0000000000000000 RCX: ffffffff8a0f6565 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88802c636ceb R10: ffffed10058c6d9d R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff8e7a7390 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 kernel/sched/idle.c:97 cpuidle_idle_call kernel/sched/idle.c:170 [inline] do_idle+0x317/0x3c0 kernel/sched/idle.c:282 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:379 rest_init+0x16f/0x2b0 init/main.c:735 arch_call_rest_init+0x13/0x30 init/main.c:834 start_kernel+0x3b6/0x490 init/main.c:1088 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:556 x86_64_start_kernel+0xb3/0xc0 arch/x86/kernel/head64.c:537 secondary_startup_64_no_verify+0xf4/0xfb ---------------- Code disassembly (best guess): 0: 89 07 mov %eax,(%rdi) 2: 49 c7 c0 08 00 00 00 mov $0x8,%r8 9: 4d 29 c8 sub %r9,%r8 c: 4c 01 c7 add %r8,%rdi f: 4c 29 c2 sub %r8,%rdx 12: e9 76 ff ff ff jmpq 0xffffff8d 17: cc int3 18: cc int3 19: cc int3 1a: cc int3 1b: f3 0f 1e fa endbr64 1f: 66 90 xchg %ax,%ax 21: 0f 00 2d 43 1a 37 00 verw 0x371a43(%rip) # 0x371a6b 28: fb sti 29: f4 hlt * 2a: fa cli <-- trapping instruction 2b: c3 retq 2c: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 33: 00 00 00 00 37: 0f 1f 40 00 nopl 0x0(%rax) 3b: f3 0f 1e fa endbr64 3f: 65 gs