WARNING in bpf_xdp_adjust

Title	Replies (including bot)	Last reply
WARNING in bpf_xdp_adjust_tail	1 (2)	2020/07/06 06:20

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1 (2)

2020/07/06 06:20

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in bpf_xdp_adjust_tail (3) bpf net				1	1102d	1098d	0/28	auto-closed as invalid on 2022/04/07 02:43
linux-6.1	WARNING in bpf_xdp_adjust_tail	C		done	238	486d	647d	3/3	fixed on 2023/10/09 13:09
upstream	WARNING in bpf_xdp_adjust_tail (4) bpf	C	error		466	494d	704d	23/28	fixed on 2023/10/12 12:48
upstream	WARNING in bpf_xdp_adjust_tail (2) bpf net				1	1342d	1342d	0/28	auto-closed as invalid on 2021/07/10 12:40
linux-5.15	WARNING in bpf_xdp_adjust_tail	C		error	73	498d	647d	0/3	auto-obsoleted due to no activity on 2023/10/12 14:59

WARNING: CPU: 0 PID: 22595 at net/core/filter.c:3463 ____bpf_xdp_adjust_tail net/core/filter.c:3463 [inline] WARNING: CPU: 0 PID: 22595 at net/core/filter.c:3463 bpf_xdp_adjust_tail+0x18e/0x1e0 net/core/filter.c:3452 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 22595 Comm: syz-executor.4 Not tainted 5.8.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x45 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 exc_invalid_op+0x24d/0x400 arch/x86/kernel/traps.c:235 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:563 RIP: 0010:____bpf_xdp_adjust_tail net/core/filter.c:3463 [inline] RIP: 0010:bpf_xdp_adjust_tail+0x18e/0x1e0 net/core/filter.c:3452 Code: 37 fb 84 db 74 09 49 c7 c4 ea ff ff ff eb c7 e8 f8 f5 37 fb 44 89 e6 48 c7 c7 e0 fc fd 88 c6 05 dc f5 6d 04 01 e8 94 3b 09 fb <0f> 0b eb d8 e8 d9 48 77 fb e9 c5 fe ff ff e8 df 48 77 fb e9 92 fe RSP: 0018:ffffc900018878e0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815ce8d7 RDI: fffff52000310f0e RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880ae620fcb R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000020000 R13: ffff88804c20feef R14: ffff88804c20feef R15: 0000000000000000 bpf_prog_4add87e5301a4105+0x20/0x818 bpf_prog_run_xdp include/linux/filter.h:734 [inline] netif_receive_generic_xdp+0x70f/0x1760 net/core/dev.c:4647 do_xdp_generic net/core/dev.c:4735 [inline] do_xdp_generic+0x96/0x1a0 net/core/dev.c:4728 tun_get_user+0x22d2/0x35b0 drivers/net/tun.c:1905 tun_chr_write_iter+0xba/0x151 drivers/net/tun.c:1999 call_write_iter include/linux/fs.h:1907 [inline] new_sync_write+0x422/0x650 fs/read_write.c:484 __vfs_write+0xc9/0x100 fs/read_write.c:497 vfs_write+0x268/0x5d0 fs/read_write.c:559 ksys_write+0x12d/0x250 fs/read_write.c:612 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x416661 Code: Bad RIP value. RSP: 002b:00007f8bc3971c60 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000005095a0 RCX: 0000000000416661 RDX: 000000000000fdef RSI: 0000000020000080 RDI: 00000000000000f0 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 00007f8bc39729d0 R11: 0000000000000293 R12: 00000000ffffffff R13: 0000000000000bfd R14: 00000000004ce559 R15: 00007f8bc39726d4 Kernel Offset: disabled