------------[ cut here ]------------ psock: 0000000000000000, prot: tcp_bpf_prots+0xa80/0x1180 WARNING: net/core/sock_map.c:1668 at sock_map_destroy+0x291/0x2e0 net/core/sock_map.c:1667, CPU#1: syz.0.2492/11877 Modules linked in: CPU: 1 UID: 0 PID: 11877 Comm: syz.0.2492 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:sock_map_destroy+0x2b4/0x2e0 net/core/sock_map.c:1667 Code: 4c 8d 3d 7f e8 52 06 48 83 c3 28 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 f5 17 2f f9 48 8b 13 4c 89 ff 4c 89 f6 <67> 48 0f b9 3a e9 6e ff ff ff e8 7d 12 ca f8 4c 89 ff be 03 00 00 RSP: 0018:ffffc900043e7bb8 EFLAGS: 00010246 RAX: 1ffff1100bdfd3f5 RBX: ffff88805efe9fa8 RCX: ffff888059df8000 RDX: ffffffff998387a0 RSI: 0000000000000000 RDI: ffffffff8f4b0c60 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed1007554a47 R12: ffffffff88f82150 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8f4b0c60 FS: 000055557fd51500(0000) GS:ffff888126760000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000048c0 CR3: 0000000039e22000 CR4: 00000000003526f0 Call Trace: inet_csk_destroy_sock+0x165/0x340 net/ipv4/inet_connection_sock.c:1270 __tcp_close+0xd2e/0x1010 net/ipv4/tcp.c:3338 tcp_close+0x28/0x110 net/ipv4/tcp.c:3350 inet_release+0x143/0x190 net/ipv4/af_inet.c:443 __sock_release net/socket.c:662 [inline] sock_close+0xc3/0x240 net/socket.c:1455 __fput+0x461/0xa90 fs/file_table.c:469 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline] do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1ef7fca379 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdaef47b28 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007ffdaef47c10 RCX: 00007f1ef7fca379 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000038656 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b33520000 R11: 0000000000000246 R12: 00007ffdaef47c50 R13: 00007f1ef8205fac R14: 000000000003868c R15: 00007f1ef8205fa0 ---------------- Code disassembly (best guess): 0: 4c 8d 3d 7f e8 52 06 lea 0x652e87f(%rip),%r15 # 0x652e886 7: 48 83 c3 28 add $0x28,%rbx b: 48 89 d8 mov %rbx,%rax e: 48 c1 e8 03 shr $0x3,%rax 12: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 17: 74 08 je 0x21 19: 48 89 df mov %rbx,%rdi 1c: e8 f5 17 2f f9 call 0xf92f1816 21: 48 8b 13 mov (%rbx),%rdx 24: 4c 89 ff mov %r15,%rdi 27: 4c 89 f6 mov %r14,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 6e ff ff ff jmp 0xffffffa2 34: e8 7d 12 ca f8 call 0xf8ca12b6 39: 4c 89 ff mov %r15,%rdi 3c: be .byte 0xbe 3d: 03 00 add (%rax),%eax