------------[ cut here ]------------ WARNING: CPU: 0 PID: 5880 at include/linux/skbuff.h:2740 pskb_may_pull_reason include/linux/skbuff.h:2740 [inline] WARNING: CPU: 0 PID: 5880 at include/linux/skbuff.h:2740 pskb_may_pull include/linux/skbuff.h:2756 [inline] WARNING: CPU: 0 PID: 5880 at include/linux/skbuff.h:2740 skb_ensure_writable+0x2ef/0x440 net/core/skbuff.c:6100 Modules linked in: CPU: 0 PID: 5880 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:pskb_may_pull_reason include/linux/skbuff.h:2740 [inline] RIP: 0010:pskb_may_pull include/linux/skbuff.h:2756 [inline] RIP: 0010:skb_ensure_writable+0x2ef/0x440 net/core/skbuff.c:6100 Code: e8 d6 52 58 f8 4c 89 ef 31 f6 31 d2 b9 20 08 00 00 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 07 03 fe ff e8 b2 52 58 f8 90 <0f> 0b 90 e9 3e fd ff ff 44 89 f7 44 89 e6 e8 5e 54 58 f8 45 39 e6 RSP: 0018:ffffc9000326f8f8 EFLAGS: 00010287 RAX: ffffffff893ca19e RBX: ffff88807ba68c80 RCX: 0000000000040000 RDX: ffffc90004b81000 RSI: 0000000000000823 RDI: 0000000000000824 RBP: 00000000eb5d3131 R08: ffffffff893c9ed7 R09: 1ffffffff1f0c1bd R10: dffffc0000000000 R11: ffffffffa0001fd4 R12: 00000000eb5d3131 R13: ffff88807ba68c80 R14: ffffc900030de030 R15: dffffc0000000000 FS: 00007f998624c6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30421000 CR3: 000000007b1f0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __bpf_try_make_writable net/core/filter.c:1665 [inline] bpf_try_make_writable net/core/filter.c:1671 [inline] ____bpf_skb_pull_data net/core/filter.c:1862 [inline] bpf_skb_pull_data+0x7c/0x230 net/core/filter.c:1851 bpf_prog_643fb1e587a79136+0x1d/0x1f bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] bpf_test_run+0x409/0x900 net/bpf/test_run.c:425 bpf_prog_test_run_skb+0xafa/0x13a0 net/bpf/test_run.c:1058 bpf_prog_test_run+0x33a/0x3b0 kernel/bpf/syscall.c:4240 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5649 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline] __se_sys_bpf kernel/bpf/syscall.c:5736 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f998547de69 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:00007f998624c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f99855abf80 RCX: 00007f998547de69 RDX: 0000000000000050 RSI: 0000000020000080 RDI: 000000000000000a RBP: 00007f99854ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f99855abf80 R15: 00007fff230f9098