general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted 6.1.31-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:inet_ehash_lockp include/net/inet_hashtables.h:209 [inline] RIP: 0010:inet_unhash+0x1ec/0x870 net/ipv4/inet_hashtables.c:793 Code: 5f 5d c3 49 8d 6c 24 08 48 89 e8 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 38 05 00 00 8b 6d 00 48 8d 7b 08 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 58 79 d8 f8 48 8b 7b 08 48 83 c3 14 48 89 RSP: 0018:ffffc900001b77b8 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff8880126b9dc0 RDX: ffff8880126b9dc0 RSI: 0000000000000004 RDI: 0000000000000008 RBP: 0000000012174fb1 R08: ffffffff8907a254 R09: ffffffff8909770d R10: 0000000000000002 R11: ffff8880126b9dc0 R12: ffff88807699b000 R13: ffff88807699b028 R14: dffffc0000000000 R15: ffff88807699b070 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020250000 CR3: 000000007d627000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcp_set_state+0x3d9/0x770 net/ipv4/tcp.c:2748 tcp_done+0x103/0x320 net/ipv4/tcp.c:4645 tcp_out_of_resources+0x1f2/0x390 net/ipv4/tcp_timer.c:132 tcp_probe_timer net/ipv4/tcp_timer.c:385 [inline] tcp_write_timer_handler+0x58a/0x930 net/ipv4/tcp_timer.c:624 tcp_write_timer+0x12e/0x280 net/ipv4/tcp_timer.c:637 call_timer_fn+0x19e/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1790 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 run_ksoftirqd+0xc1/0x120 kernel/softirq.c:934 smpboot_thread_fn+0x51b/0xa10 kernel/smpboot.c:164 kthread+0x26e/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:inet_ehash_lockp include/net/inet_hashtables.h:209 [inline] RIP: 0010:inet_unhash+0x1ec/0x870 net/ipv4/inet_hashtables.c:793 Code: 5f 5d c3 49 8d 6c 24 08 48 89 e8 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 38 05 00 00 8b 6d 00 48 8d 7b 08 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 58 79 d8 f8 48 8b 7b 08 48 83 c3 14 48 89 RSP: 0018:ffffc900001b77b8 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff8880126b9dc0 RDX: ffff8880126b9dc0 RSI: 0000000000000004 RDI: 0000000000000008 RBP: 0000000012174fb1 R08: ffffffff8907a254 R09: ffffffff8909770d R10: 0000000000000002 R11: ffff8880126b9dc0 R12: ffff88807699b000 R13: ffff88807699b028 R14: dffffc0000000000 R15: ffff88807699b070 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020250000 CR3: 000000007d627000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 5f pop %rdi 1: 5d pop %rbp 2: c3 retq 3: 49 8d 6c 24 08 lea 0x8(%r12),%rbp 8: 48 89 e8 mov %rbp,%rax b: 48 c1 e8 03 shr $0x3,%rax f: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax 14: 84 c0 test %al,%al 16: 0f 85 38 05 00 00 jne 0x554 1c: 8b 6d 00 mov 0x0(%rbp),%ebp 1f: 48 8d 7b 08 lea 0x8(%rbx),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 05 je 0x36 31: e8 58 79 d8 f8 callq 0xf8d8798e 36: 48 8b 7b 08 mov 0x8(%rbx),%rdi 3a: 48 83 c3 14 add $0x14,%rbx 3e: 48 rex.W 3f: 89 .byte 0x89