------------[ cut here ]------------ WARNING: CPU: 3 PID: 109 at net/ipv4/af_inet.c:154 inet_sock_destruct+0x6df/0x8a0 net/ipv4/af_inet.c:154 Modules linked in: CPU: 3 PID: 109 Comm: kswapd0 Not tainted 6.3.0-rc6-syzkaller #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 f5 7a ec f8 0f 0b e9 07 fe ff ff e8 e9 7a ec f8 0f 0b e9 3f fe ff ff e8 dd 7a ec f8 0f 0b e9 95 fd ff ff e8 d1 7a ec f8 <0f> 0b e9 9f fe ff ff e8 d5 9f 3c f9 e9 7a fc ff ff 4c 89 e7 e8 08 RSP: 0018:ffffc900007e8c48 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000ffff9000 RCX: 0000000000000100 RDX: ffff888018e00080 RSI: ffffffff88957fdf RDI: 0000000000000005 RBP: ffff8880271c4240 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000ffff9000 R11: 0000000000000004 R12: ffff8880271c4268 R13: ffff8880271c44b4 R14: ffff8880271c42c0 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f38ad9c9000 CR3: 000000007302e000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sk_destruct+0x4d/0x770 net/core/sock.c:2135 sk_destruct net/core/sock.c:2183 [inline] __sk_free+0x175/0x460 net/core/sock.c:2194 sk_free+0x7c/0xa0 net/core/sock.c:2205 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:1107 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x3c/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 16 a8 61 f7 48 89 ef e8 ae 14 62 f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 8f 4c 54 f7 65 8b 05 60 98 01 76 85 c0 74 0a 5b 5d c3 e8 5c 62 RSP: 0018:ffffc90001f4f970 EFLAGS: 00000206 RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff229a07e RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff8c7d9860 R08: 0000000000000001 R09: ffffffff914c7b97 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888074c7c000 R13: ffff888074c7c000 R14: ffffc90001f4fce0 R15: 0000000000012a00 memcg_memory_event include/linux/memcontrol.h:1121 [inline] shrink_one+0x375/0x810 mm/vmscan.c:5338 shrink_many mm/vmscan.c:5394 [inline] lru_gen_shrink_node mm/vmscan.c:5511 [inline] shrink_node+0x2064/0x35f0 mm/vmscan.c:6459 kswapd_shrink_node mm/vmscan.c:7262 [inline] balance_pgdat+0xa02/0x1ac0 mm/vmscan.c:7452 kswapd+0x677/0xd60 mm/vmscan.c:7712 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 24 10 and $0x10,%al 2: e8 16 a8 61 f7 callq 0xf761a81d 7: 48 89 ef mov %rbp,%rdi a: e8 ae 14 62 f7 callq 0xf76214bd f: 81 e3 00 02 00 00 and $0x200,%ebx 15: 75 25 jne 0x3c 17: 9c pushfq 18: 58 pop %rax 19: f6 c4 02 test $0x2,%ah 1c: 75 2d jne 0x4b 1e: 48 85 db test %rbx,%rbx 21: 74 01 je 0x24 23: fb sti 24: bf 01 00 00 00 mov $0x1,%edi * 29: e8 8f 4c 54 f7 callq 0xf7544cbd <-- trapping instruction 2e: 65 8b 05 60 98 01 76 mov %gs:0x76019860(%rip),%eax # 0x76019895 35: 85 c0 test %eax,%eax 37: 74 0a je 0x43 39: 5b pop %rbx 3a: 5d pop %rbp 3b: c3 retq 3c: e8 .byte 0xe8 3d: 5c pop %rsp 3e: 62 .byte 0x62