------------[ cut here ]------------ WARNING: CPU: 0 PID: 4719 at include/linux/skbuff.h:2641 skb_ensure_writable+0x2e6/0x430 net/core/skbuff.c:5779 Modules linked in: CPU: 0 PID: 4719 Comm: syz-executor.1 Not tainted 6.1.92-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:pskb_may_pull include/linux/skbuff.h:2641 [inline] RIP: 0010:skb_ensure_writable+0x2e6/0x430 net/core/skbuff.c:5779 Code: c3 e8 de ea 0d 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 ef 0f fe ff e8 ba ea 0d f9 <0f> 0b e9 44 fd ff ff 44 89 f7 44 89 e6 e8 08 ec 0d f9 45 39 e6 0f RSP: 0018:ffffc90002def918 EFLAGS: 00010287 RAX: ffffffff887ca296 RBX: ffff88801bce4140 RCX: 0000000000040000 RDX: ffffc90013e0d000 RSI: 00000000000000fb RDI: 00000000000000fc RBP: 00000000ffffffff R08: ffffffff887c9fd3 R09: fffffbfff1ce712e R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000ffffffff R13: ffff88801bce4140 R14: ffffc90002d66020 R15: dffffc0000000000 FS: 00007f43e8f416c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fb22000 CR3: 0000000055c8f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __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_6793aff30a98ea6b+0x15/0x17 bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] bpf_test_run+0x40f/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: 0033:0x7f43e827cf69 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:00007f43e8f410c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f43e83b3f80 RCX: 00007f43e827cf69 RDX: 0000000000000050 RSI: 00000000200002c0 RDI: 000000000000000a RBP: 00007f43e82da6fe R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f43e83b3f80 R15: 00007ffe1e548978 </TASK>