------------[ cut here ]------------ WARNING: CPU: 1 PID: 2798 at include/linux/skbuff.h:2723 pskb_may_pull_reason include/linux/skbuff.h:2723 [inline] WARNING: CPU: 1 PID: 2798 at include/linux/skbuff.h:2723 pskb_may_pull include/linux/skbuff.h:2739 [inline] WARNING: CPU: 1 PID: 2798 at include/linux/skbuff.h:2723 skb_ensure_writable+0x82/0xb0 net/core/skbuff.c:6103 Modules linked in: CPU: 1 PID: 2798 Comm: syz-executor.0 Not tainted 6.8.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:pskb_may_pull_reason include/linux/skbuff.h:2723 [inline] RIP: 0010:pskb_may_pull include/linux/skbuff.h:2739 [inline] RIP: 0010:skb_ensure_writable+0x82/0xb0 net/core/skbuff.c:6103 Code: 75 12 8b 8b c8 00 00 00 29 c1 01 e9 0f b7 43 7a 39 c1 76 d1 48 89 df 31 f6 31 d2 b9 20 08 00 00 5b 41 5e 5d e9 9f 89 ff ff 90 <0f> 0b 90 eb 8a 41 be f4 ff ff ff 39 e9 72 ac 89 ee 29 c6 48 89 df RSP: 0018:ffffc90000eb7bd8 EFLAGS: 00010286 RAX: 0000000000f52510 RBX: ffff888112ea3a00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000fb6014e4 RDI: ffff888112ea3a00 RBP: 00000000fb6014e4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff822133a0 R12: ffffc90000eb7c30 R13: ffff888112ea3a00 R14: ffffc90000162000 R15: 0000000000000000 FS: 00007f4f286806c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4f28c290c0 CR3: 0000000112152000 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+0x1a/0x60 net/core/filter.c:1851 ___bpf_prog_run+0x5f6/0x2280 kernel/bpf/core.c:1986 __bpf_prog_run32+0xbb/0xe0 kernel/bpf/core.c:2225 bpf_dispatcher_nop_func include/linux/bpf.h:1235 [inline] __bpf_prog_run include/linux/filter.h:651 [inline] bpf_prog_run include/linux/filter.h:658 [inline] bpf_test_run+0x1ce/0x300 net/bpf/test_run.c:423 bpf_prog_test_run_skb+0x351/0x4b0 net/bpf/test_run.c:1056 bpf_prog_test_run+0xe2/0x100 kernel/bpf/syscall.c:4188 __sys_bpf+0x2ff/0x5a0 kernel/bpf/syscall.c:5591 __do_sys_bpf kernel/bpf/syscall.c:5680 [inline] __se_sys_bpf kernel/bpf/syscall.c:5678 [inline] __x64_sys_bpf+0x17/0x20 kernel/bpf/syscall.c:5678 do_syscall_64+0xe6/0x230 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f4f28afeda9 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:00007f4f286800c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f4f28c2cf80 RCX: 00007f4f28afeda9 RDX: 0000000000000050 RSI: 0000000020000080 RDI: 000000000000000a RBP: 00007f4f28b4b47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f4f28c2cf80 R15: 00007fff70c98fb8