syzbot


WARNING in dev_xdp_install

Status: upstream: reported C repro on 2025/03/28 14:36
Subsystems: bpf
[Documentation on labels]
Reported-by: syzbot+08936936fe8132f91f1a@syzkaller.appspotmail.com
First crash: 6d10h, last: 5h41m
Discussions (2)
Title Replies (including bot) Last reply
[PATCH bpf] bpf: add missing ops lock around dev_xdp_attach_link 5 (5) 2025/04/02 23:40
[syzbot] [bpf?] WARNING in dev_xdp_install 1 (4) 2025/04/02 17:00

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 3 PID: 5936 at ./include/net/netdev_lock.h:54 netdev_ops_assert_locked include/net/netdev_lock.h:54 [inline]
WARNING: CPU: 3 PID: 5936 at ./include/net/netdev_lock.h:54 dev_xdp_install+0x610/0x9b0 net/core/dev.c:9911
Modules linked in:
CPU: 3 UID: 0 PID: 5936 Comm: syz-executor652 Not tainted 6.14.0-syzkaller-12456-gacc4d5ff0b61 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:netdev_ops_assert_locked include/net/netdev_lock.h:54 [inline]
RIP: 0010:dev_xdp_install+0x610/0x9b0 net/core/dev.c:9911
Code: 8d bc 24 30 0d 00 00 be ff ff ff ff e8 b9 0d 28 02 31 ff 89 c5 89 c6 e8 4e f4 71 f8 85 ed 0f 85 59 fb ff ff e8 01 f9 71 f8 90 <0f> 0b 90 e9 4b fb ff ff e8 f3 f8 71 f8 49 8d bc 24 30 0d 00 00 be
RSP: 0018:ffffc900031d7950 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88802ab20cc5 RCX: ffffffff89494752
RDX: ffff88802a4b2440 RSI: ffffffff8949475f RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802ab20000
R13: ffffffff87119240 R14: ffffc90000a26000 R15: 0000000000000002
FS:  0000555586ae1380(0000) GS:ffff8880d6cbb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000140 CR3: 0000000030ae2000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dev_xdp_attach+0x6d1/0x16a0 net/core/dev.c:10094
 dev_xdp_attach_link net/core/dev.c:10113 [inline]
 bpf_xdp_link_attach+0x2c5/0x680 net/core/dev.c:10287
 link_create kernel/bpf/syscall.c:5418 [inline]
 __sys_bpf+0x19ef/0x4d80 kernel/bpf/syscall.c:5904
 __do_sys_bpf kernel/bpf/syscall.c:5941 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5939 [inline]
 __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5939
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa71b995919
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc061aef48 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa71b995919
RDX: 0000000000000040 RSI: 0000200000000200 RDI: 000000000000001c
RBP: 0000000000000000 R08: 0000555500000000 R09: 0000555500000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003
 </TASK>

Crashes (235):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/04/02 16:59 upstream acc4d5ff0b61 684b5338 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in dev_xdp_install
2025/04/02 17:59 linux-next fefb886b1344 c799dfdd .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/04/02 15:58 upstream acc4d5ff0b61 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in dev_xdp_install
2025/04/02 11:21 upstream acc4d5ff0b61 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in dev_xdp_install
2025/03/31 08:20 upstream aa918db707fb d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in dev_xdp_install
2025/03/31 04:10 upstream aa918db707fb d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in dev_xdp_install
2025/03/31 04:09 upstream aa918db707fb d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in dev_xdp_install
2025/03/30 13:23 upstream 7f2ff7b62617 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in dev_xdp_install
2025/03/30 02:43 upstream 7d06015d936c d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in dev_xdp_install
2025/03/28 02:29 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in dev_xdp_install
2025/03/28 01:55 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dev_xdp_install
2025/03/28 00:53 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dev_xdp_install
2025/03/27 22:30 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in dev_xdp_install
2025/03/27 22:11 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in dev_xdp_install
2025/03/27 20:36 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in dev_xdp_install
2025/03/27 19:44 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in dev_xdp_install
2025/03/27 18:41 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in dev_xdp_install
2025/04/02 10:17 upstream 91e5bfe317d8 c799dfdd .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/04/01 15:29 upstream 08733088b566 b8645499 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/31 00:31 upstream 7f2ff7b62617 d3999433 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in dev_xdp_install
2025/03/27 15:04 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 15:02 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 15:02 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 15:02 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 15:02 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 14:48 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 14:44 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 14:41 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 14:39 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 14:36 upstream 1a9239bb4253 928390c4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in dev_xdp_install
2025/03/27 13:25 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in dev_xdp_install
2025/03/29 14:39 upstream 7d06015d936c d3999433 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/29 09:10 upstream eff5f16bfd87 cf25e2c2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/28 23:57 upstream acb4f33713b9 9a1a9e31 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/28 09:12 upstream 4fa118e5b79f 6c09fb82 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/28 05:57 upstream 4fa118e5b79f 6c09fb82 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/27 15:07 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/27 15:01 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/27 15:00 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/27 14:46 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/27 14:46 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/27 14:45 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/27 14:41 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/27 14:40 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/03/27 14:40 upstream 1a9239bb4253 928390c4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in dev_xdp_install
2025/04/02 16:58 linux-next fefb886b1344 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/04/02 13:04 linux-next fefb886b1344 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/03/31 01:36 linux-next e21edb1638e8 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/03/28 20:32 linux-next e21edb1638e8 49900278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/03/28 20:26 linux-next e21edb1638e8 49900278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/03/28 19:13 linux-next e21edb1638e8 49900278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/03/28 14:44 linux-next e21edb1638e8 49900278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/03/28 13:06 linux-next e21edb1638e8 49900278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/03/28 13:06 linux-next e21edb1638e8 49900278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
2025/03/28 10:40 linux-next e21edb1638e8 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in dev_xdp_install
* Struck through repros no longer work on HEAD.