syzbot


WARNING in bpf_xdp_adjust_tail (4)

Status: upstream: reported C repro on 2023/01/09 18:08
Subsystems: bpf net (incorrect?)
Reported-by: syzbot+f817490f5bd20541b90a@syzkaller.appspotmail.com
First crash: 76d, last: 4h52m

Cause bisection: failed (error log, bisect log)
similar bugs (5):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in bpf_xdp_adjust_tail (3) 1 469d 465d 0/24 auto-closed as invalid on 2022/04/07 02:43
linux-6.1 WARNING in bpf_xdp_adjust_tail C 34 2d00h 14d 0/3 upstream: reported C repro on 2023/03/07 21:59
upstream WARNING in bpf_xdp_adjust_tail 1 994d 990d 0/24 auto-closed as invalid on 2020/10/29 00:20
upstream WARNING in bpf_xdp_adjust_tail (2) 1 710d 710d 0/24 auto-closed as invalid on 2021/07/10 12:40
linux-5.15 WARNING in bpf_xdp_adjust_tail C 15 1d21h 14d 0/3 upstream: reported C repro on 2023/03/07 20:14

Sample crash report:
------------[ cut here ]------------
Too BIG xdp->frame_sz = 131072
WARNING: CPU: 0 PID: 5081 at net/core/filter.c:4094 ____bpf_xdp_adjust_tail net/core/filter.c:4094 [inline]
WARNING: CPU: 0 PID: 5081 at net/core/filter.c:4094 bpf_xdp_adjust_tail+0x461/0x9a0 net/core/filter.c:4076
Modules linked in:
CPU: 0 PID: 5081 Comm: syz-executor116 Not tainted 6.3.0-rc2-syzkaller-00006-gfc89d7fb499b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:____bpf_xdp_adjust_tail net/core/filter.c:4094 [inline]
RIP: 0010:bpf_xdp_adjust_tail+0x461/0x9a0 net/core/filter.c:4076
Code: ff 89 de e8 91 5b 6a f9 84 db 0f 85 59 fd ff ff e8 74 5f 6a f9 89 ee 48 c7 c7 60 a7 5d 8b c6 05 eb 56 49 06 01 e8 ef 7b 32 f9 <0f> 0b e9 38 fd ff ff e8 93 a5 bb f9 e9 64 fc ff ff e8 89 a5 bb f9
RSP: 0018:ffffc90003b9f8f0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888022d557c0 RSI: ffffffff814bf3a7 RDI: 0000000000000001
RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffffffffea
R13: ffff888072fefeef R14: 0000000000000000 R15: ffffc90003b9faa8
FS:  0000555556647300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020011000 CR3: 0000000072f53000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 bpf_prog_4add87e5301a4105+0x1a/0x1c
 __bpf_prog_run include/linux/filter.h:601 [inline]
 bpf_prog_run_xdp include/linux/filter.h:776 [inline]
 bpf_prog_run_generic_xdp+0x578/0x1210 net/core/dev.c:4749
 netif_receive_generic_xdp+0x2e8/0x8b0 net/core/dev.c:4835
 do_xdp_generic net/core/dev.c:4894 [inline]
 do_xdp_generic+0x9a/0x1b0 net/core/dev.c:4887
 tun_get_user+0x21f0/0x3950 drivers/net/tun.c:1918
 tun_chr_write_iter+0xdf/0x200 drivers/net/tun.c:2034
 call_write_iter include/linux/fs.h:1851 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x9ed/0xe10 fs/read_write.c:584
 ksys_write+0x12b/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3b91402c33
Code: 5d 41 5c 41 5d 41 5e e9 9b fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007fff975c5ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fff975c5ef0 RCX: 00007f3b91402c33
RDX: 000000000000fdef RSI: 0000000020001600 RDI: 00000000000000c8
RBP: 00007fff975c5f50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007fff975c5f00 R14: 00007fff975c5f20 R15: 00007fff975c5ee8
 </TASK>

Fix bisection attempts:
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-net-this-kasan-gce 2023/03/03 15:31 net 528125268588 1dac8c7a .config console log report syz C
* Struck through repros no longer work on HEAD.
Crashes (119):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-kasan-gce-root 2023/03/14 15:43 upstream fc89d7fb499b 0d5c4377 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-this-kasan-gce 2023/03/08 06:22 net 37d9df224d1e d2b00170 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-this-kasan-gce 2023/03/08 05:21 net 37d9df224d1e d2b00170 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-this-kasan-gce 2023/01/05 18:21 net fe69230f0589 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-kasan-gce 2023/03/08 08:03 net-next 0194b64578e9 d2b00170 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-kasan-gce 2023/03/08 07:02 net-next 0194b64578e9 d2b00170 .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-kasan-gce 2023/01/05 19:15 net-next 0471005efac9 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/08 07:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e d2b00170 .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/08 06:44 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e d2b00170 .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/01/06 11:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 247f34f7b803 1dac8c7a .config console log report syz C [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-kasan-gce-root 2023/03/16 09:46 upstream 9c1bec9c0b08 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-qemu-upstream 2023/01/31 11:00 upstream 22b8077d0fce 7374c4e5 .config console log report info WARNING in bpf_xdp_adjust_tail
ci-qemu-upstream 2023/01/31 10:58 upstream 22b8077d0fce 7374c4e5 .config console log report info WARNING in bpf_xdp_adjust_tail
ci-upstream-kasan-gce-smack-root 2023/01/31 10:56 upstream 22b8077d0fce 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-kasan-gce-root 2023/01/31 10:55 upstream 22b8077d0fce 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-kasan-gce-root 2023/01/31 10:55 upstream 22b8077d0fce 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-kasan-gce-selinux-root 2023/01/26 21:12 upstream 7c46948a6e9c 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-this-kasan-gce 2023/03/20 17:38 net f36fa5581bca 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-this-kasan-gce 2023/01/31 10:56 net 73a876022273 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-kasan-gce 2023/03/18 13:41 net-next 39a86d059a78 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-net-kasan-gce 2023/02/01 03:07 net-next a266ef69b890 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-linux-next-kasan-gce-root 2023/03/16 10:52 linux-next 6f72958a49f6 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-linux-next-kasan-gce-root 2023/03/06 22:20 linux-next dc837c1a5137 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-linux-next-kasan-gce-root 2023/01/31 16:17 linux-next 80bd9028feca 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/22 13:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e d846e076 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/22 00:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/21 23:25 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/21 20:25 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/21 12:34 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/21 11:13 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/21 07:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/20 01:38 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/18 08:46 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/17 23:30 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/17 21:53 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 7939252e .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/16 22:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/16 19:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/16 08:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/15 14:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/15 12:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/15 01:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 0d5c4377 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/14 12:17 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 0d5c4377 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/14 10:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 0d5c4377 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/13 18:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 026e2200 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/13 17:30 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 026e2200 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/13 15:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 026e2200 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/13 11:29 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/12 22:15 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/12 03:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/11 12:10 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/10 17:12 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/10 08:47 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/10 00:21 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e f08b59ac .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/09 19:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e f08b59ac .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/09 10:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e f08b59ac .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/09 08:43 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e f08b59ac .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/08 22:30 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 4fc6d98d .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/08 20:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 4fc6d98d .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/08 03:14 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e d2b00170 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/08 00:47 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e d2b00170 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/07 14:46 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e ffaa5c55 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/07 13:43 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e ffaa5c55 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/07 10:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e f73829fc .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/03/07 02:46 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
ci-upstream-gce-arm64 2023/01/31 10:55 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c62c88e05937 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] WARNING in bpf_xdp_adjust_tail
* Struck through repros no longer work on HEAD.