------------[ cut here ]------------ WARNING: CPU: 1 PID: 9492 at include/linux/skbuff.h:2641 skb_ensure_writable+0x2e6/0x430 net/core/skbuff.c:5768 Modules linked in: CPU: 1 PID: 9492 Comm: syz-executor.4 Not tainted 6.1.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:pskb_may_pull include/linux/skbuff.h:2641 [inline] RIP: 0010:skb_ensure_writable+0x2e6/0x430 net/core/skbuff.c:5768 Code: c3 e8 8e 29 0e f9 4c 89 ef 31 f6 31 d2 b9 20 0a 00 00 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 9f 0f fe ff e8 6a 29 0e f9 <0f> 0b e9 44 fd ff ff 44 89 f7 44 89 e6 e8 b8 2a 0e f9 45 39 e6 0f RSP: 0018:ffffc90003d2f918 EFLAGS: 00010287 RAX: ffffffff887c63e6 RBX: ffff88804c676280 RCX: 0000000000040000 RDX: ffffc9000c239000 RSI: 0000000000000102 RDI: 0000000000000103 RBP: 00000000fffffffe R08: ffffffff887c6123 R09: ffffffff8fe9e048 R10: ffffffff8fe9e058 R11: ffffffff8fe9e050 R12: 00000000fffffffe R13: ffff88804c676280 R14: ffffc90004bb7020 R15: dffffc0000000000 FS: 00007f2df12926c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00157f1a8 CR3: 000000004b74f000 CR4: 00000000003506e0 DR0: 0000000020000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __bpf_try_make_writable net/core/filter.c:1658 [inline] bpf_try_make_writable net/core/filter.c:1664 [inline] ____bpf_skb_pull_data net/core/filter.c:1844 [inline] bpf_skb_pull_data+0x78/0x220 net/core/filter.c:1833 bpf_prog_12bd3c84cb9ccb12+0x15/0x17 bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:596 [inline] bpf_prog_run include/linux/filter.h:610 [inline] bpf_test_run+0x60c/0x8b0 net/bpf/test_run.c:402 bpf_prog_test_run_skb+0xaf1/0x13a0 net/bpf/test_run.c:1180 bpf_prog_test_run+0x32f/0x3a0 kernel/bpf/syscall.c:3670 __sys_bpf+0x3eb/0x6c0 kernel/bpf/syscall.c:5023 __do_sys_bpf kernel/bpf/syscall.c:5109 [inline] __se_sys_bpf kernel/bpf/syscall.c:5107 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f2df047dea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2df12920c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f2df05abf80 RCX: 00007f2df047dea9 RDX: 0000000000000048 RSI: 00000000200002c0 RDI: 000000000000000a RBP: 00007f2df04ca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f2df05abf80 R15: 00007ffee122a4a8