WARNING in bpf_xdp_adjust

Title	Replies (including bot)	Last reply
[syzbot] WARNING in bpf_xdp_adjust_tail (3)	0 (1)	2021/12/12 02:47

Title

Replies (including bot)

Last reply

[syzbot] WARNING in bpf_xdp_adjust_tail (3)

0 (1)

2021/12/12 02:47

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	WARNING in bpf_xdp_adjust_tail	C		done	238	254d	416d	3/3	fixed on 2023/10/09 13:09
upstream	WARNING in bpf_xdp_adjust_tail (4) bpf	C	error		466	262d	473d	23/26	fixed on 2023/10/12 12:48
upstream	WARNING in bpf_xdp_adjust_tail bpf net				1	1395d	1391d	0/26	auto-closed as invalid on 2020/10/29 00:20
upstream	WARNING in bpf_xdp_adjust_tail (2) bpf net				1	1111d	1111d	0/26	auto-closed as invalid on 2021/07/10 12:40
linux-5.15	WARNING in bpf_xdp_adjust_tail	C		error	73	267d	416d	0/3	auto-obsoleted due to no activity on 2023/10/12 14:59

------------[ cut here ]------------ Too BIG xdp->frame_sz = 16384 WARNING: CPU: 0 PID: 24551 at net/core/filter.c:3832 ____bpf_xdp_adjust_tail net/core/filter.c:3832 [inline] WARNING: CPU: 0 PID: 24551 at net/core/filter.c:3832 bpf_xdp_adjust_tail+0x19c/0x1b0 net/core/filter.c:3821 Modules linked in: CPU: 0 PID: 24551 Comm: syz-executor.3 Not tainted 5.16.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:____bpf_xdp_adjust_tail net/core/filter.c:3832 [inline] RIP: 0010:bpf_xdp_adjust_tail+0x19c/0x1b0 net/core/filter.c:3821 Code: e0 fe ff ff e8 a5 08 a6 f9 e9 d6 fe ff ff e8 eb 34 5a f9 c6 05 0c e7 c0 05 01 48 c7 c7 a0 35 9a 8b 89 ee 31 c0 e8 94 0e 24 f9 <0f> 0b 48 c7 c0 ea ff ff ff e9 7a ff ff ff 66 0f 1f 44 00 00 55 41 RSP: 0018:ffffc90004937740 EFLAGS: 00010246 RAX: 9ec6b2c38dd06900 RBX: ffffc90004937900 RCX: 0000000000040000 RDX: ffffc9000ac42000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 0000000000004000 R08: ffffffff816a1d52 R09: ffffed10173467b1 R10: ffffed10173467b1 R11: 0000000000000000 R12: ffff888035b18f81 R13: ffff888035b18f81 R14: ffffc90004937908 R15: 1ffff92000926f21 FS: 00007f4f6f09a700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4f70238020 CR3: 00000000341e3000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> bpf_prog_812643e682ac10e2+0x1a/0x9c8 __bpf_prog_run include/linux/filter.h:626 [inline] bpf_prog_run_xdp include/linux/filter.h:804 [inline] bpf_prog_run_generic_xdp+0x4d5/0xfc0 net/core/dev.c:4737 netif_receive_generic_xdp net/core/dev.c:4823 [inline] do_xdp_generic+0x480/0x6a0 net/core/dev.c:4878 tun_get_user+0x1e42/0x39e0 drivers/net/tun.c:1847 tun_chr_write_iter+0x10a/0x1e0 drivers/net/tun.c:1942 call_write_iter include/linux/fs.h:2162 [inline] new_sync_write fs/read_write.c:503 [inline] vfs_write+0xb11/0xe90 fs/read_write.c:590 ksys_write+0x18f/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f4f700d760f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48 RSP: 002b:00007f4f6f09a150 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f4f70237f60 RCX: 00007f4f700d760f RDX: 0000000000000e81 RSI: 00000000200000c0 RDI: 00000000000000c8 RBP: 00007f4f7017eff7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007ffcf1595d4f R14: 00007f4f6f09a300 R15: 0000000000022000 </TASK>