kernel BUG in register_netdevice

Status: upstream: reported C repro on 2026/07/30 00:10
Subsystems: usb
Labels: prio:low
[Documentation on labels]
Reported-by: syzbot+85ede281798faf736677@syzkaller.appspotmail.com
First crash: 52d, last: 4h51m
Cause bisection: introduced by (bisect log) :
commit 425b9c7f51c98443db71ad679893725483b21196
Author: Vasily Averin <vvs@openvz.org>
Date: Mon May 2 12:15:51 2022 +0000

  memcg: accounting for objects allocated for new netdevice

Crash: kernel BUG in register_netdevice (log)
Repro: syz .config
  
✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision
eef0730c repro 💥 kernel BUG in register_netdevice 2026/07/30 09:10 2026/07/30 09:10 2026/07/30 09:33 2377cd3d
8b56a131 assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ kernel BUG in register_netdevice 2026/07/27 00:53 2026/07/27 00:53 2026/07/27 01:32 492bab15
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [usb?] kernel BUG in register_netdevice 2 (5) 2026/08/26 13:30
Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 kernel BUG in register_netdevice -1 4 21d 50d 0/2 premoderation: reported on 2026/07/27 13:16
linux-6.1 kernel BUG in register_netdevice -1 syz, C 6 12d 46d 0/3 upstream: reported C repro on 2026/07/31 04:57
linux-6.6 kernel BUG in register_netdevice -1 1 5d12h 5d12h 0/2 upstream: reported on 2026/09/10 15:25
android-5-15 kernel BUG in register_netdevice -1 2 47d 47d 0/2 premoderation: reported on 2026/07/30 10:38
linux-5.15 kernel BUG in register_netdevice -1 1 42d 42d 0/3 upstream: reported on 2026/08/04 17:51
android-6-1 kernel BUG in register_netdevice -1 1 29d 29d 0/2 premoderation: reported on 2026/08/17 14:26

Sample crash report:
------------[ cut here ]------------
kernel BUG at net/core/dev.c:11397!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5607 Comm: syz-executor669 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:register_netdevice+0x1eb4/0x1ed0 net/core/dev.c:11397
Code: ff 44 89 f1 80 e1 07 38 c1 0f 8c bd fb ff ff 4c 89 f7 e8 ff e4 0a f9 e9 b0 fb ff ff e8 35 38 9f f8 90 0f 0b e8 2d 38 9f f8 90 <0f> 0b e8 25 38 9f f8 90 0f 0b e8 1d 38 9f f8 41 be 42 00 00 00 e9
RSP: 0018:ffffc90004a3f560 EFLAGS: 00010293
RAX: ffffffff89273b03 RBX: 1ffff92000947ec0 RCX: ffff888035045dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004a3f6e0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f63990 R12: ffff888037f50888
R13: dffffc0000000000 R14: 0000000000000003 R15: ffff888037f50000
FS:  000055556ff47400(0000) GS:ffff888125bd9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000003e810000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 register_netdev+0x40/0x60 net/core/dev.c:11620
 gether_register_netdev+0x84/0x180 drivers/usb/gadget/function/u_ether.c:873
 ncm_bind+0x717/0xdc0 drivers/usb/gadget/function/f_ncm.c:1470
 usb_add_function+0x290/0x930 drivers/usb/gadget/composite.c:333
 configfs_composite_bind+0xde0/0x1410 drivers/usb/gadget/configfs.c:1802
 gadget_bind_driver+0x2ca/0x9e0 drivers/usb/gadget/udc/core.c:1662
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x254/0xae0 drivers/base/dd.c:706
 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898
 __driver_attach+0x339/0x600 drivers/base/dd.c:1292
 bus_for_each_dev+0x23e/0x2c0 drivers/base/bus.c:383
 bus_add_driver+0x348/0x670 drivers/base/bus.c:763
 driver_register+0x23a/0x320 drivers/base/driver.c:174
 usb_gadget_register_driver_owner+0xf9/0x270 drivers/usb/gadget/udc/core.c:1752
 gadget_dev_desc_UDC_store+0x1c9/0x2f0 drivers/usb/gadget/configfs.c:300
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x33a/0x430 fs/configfs/file.c:229
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61e/0xbb0 fs/read_write.c:687
 ksys_write+0x156/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b822799e9
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 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 d8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd42155898 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4b822799e9
RDX: 000000000000000b RSI: 0000200000001400 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd421558bc
R13: 00007ffd421558d0 R14: 00007ffd42155910 R15: 0000000000000001
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:register_netdevice+0x1eb4/0x1ed0 net/core/dev.c:11397

Crashes (107):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/29 10:05 upstream c20313e98b04 2f52988a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in register_netdevice
2026/09/02 13:07 upstream 89a312991dc6 74e93e68 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/08/31 05:18 upstream a23cbb05744b 2f52988a .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/08/17 02:39 upstream dcb68831eac7 746171ee .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in register_netdevice
2026/08/15 03:16 upstream a5161661ae99 746171ee .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in register_netdevice
2026/08/19 21:15 upstream e8bf40d15402 1e72964b .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in register_netdevice
2026/08/20 21:34 upstream 9d2ed026f031 1e72964b .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/09/15 22:55 upstream f6e7b42bf05b 81a27d1a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in register_netdevice
2026/09/09 08:58 upstream 893e11787f78 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in register_netdevice
2026/08/29 21:57 upstream 08dbfad3f504 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in register_netdevice
2026/08/29 10:12 upstream cf72cbb39da8 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in register_netdevice
2026/08/27 13:21 upstream 73e3f0710014 a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in register_netdevice
2026/08/25 18:50 upstream 66498c75b4f8 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in register_netdevice
2026/08/25 13:07 upstream 66498c75b4f8 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in register_netdevice
2026/08/18 19:55 upstream 0f23d56f17fd 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in register_netdevice
2026/08/18 09:00 upstream ff68e5f557f6 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in register_netdevice
2026/08/18 03:24 upstream 8d3ae59288f1 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in register_netdevice
2026/08/15 02:16 upstream 2f1baf1fc892 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in register_netdevice
2026/08/15 00:48 upstream 2f1baf1fc892 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in register_netdevice
2026/08/14 00:35 upstream 3aa1dcaa4f6f a9ede23c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in register_netdevice
2026/08/09 03:18 upstream a59f57e2aa12 5d63f80b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in register_netdevice
2026/07/27 23:35 upstream f5098b6bae76 4cb2b096 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in register_netdevice
2026/07/25 14:08 upstream 0ce37745d4bf 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in register_netdevice
2026/08/29 07:22 upstream cf72cbb39da8 2f52988a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/27 23:33 upstream 818bebeb63dd e2fa417d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/27 11:21 upstream 818bebeb63dd c53a1b9c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/08/27 03:32 upstream 818bebeb63dd a2b77b9e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/25 20:36 upstream 818bebeb63dd a9a1fc32 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/08/24 19:57 upstream 818bebeb63dd b55bd4c3 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/08/24 06:29 upstream 818bebeb63dd 1e72964b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/23 14:22 upstream 818bebeb63dd 1e72964b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/23 01:48 upstream 818bebeb63dd 1e72964b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/22 23:29 upstream 818bebeb63dd 1e72964b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/22 08:39 upstream 818bebeb63dd 1e72964b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/21 12:41 upstream 818bebeb63dd 1e72964b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/08/20 11:10 upstream a4ff2be345d0 1e72964b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/18 21:30 upstream 0f23d56f17fd 1e72964b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/18 17:55 upstream 0f23d56f17fd 1e72964b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/18 11:51 upstream ff68e5f557f6 1e72964b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/16 23:19 upstream dcb68831eac7 746171ee .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/16 09:26 upstream 3eb40771c00a 746171ee .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/08/16 07:17 upstream 3eb40771c00a 746171ee .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/15 06:44 upstream a5161661ae99 746171ee .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/13 16:27 upstream 3d6d817622b0 4d118901 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/08/12 05:26 upstream f5bbbfec59b4 f8d35649 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/10 18:39 upstream db2ddb871435 558388e4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/10 16:19 upstream db2ddb871435 558388e4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/10 01:01 upstream b643e495ae92 5d63f80b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/09 23:54 upstream b643e495ae92 5d63f80b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/09 00:29 upstream a59f57e2aa12 5d63f80b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/08 23:38 upstream a59f57e2aa12 5d63f80b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/08 23:27 upstream a59f57e2aa12 5d63f80b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream kernel BUG in register_netdevice
2026/08/08 17:24 upstream a59f57e2aa12 5d63f80b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in register_netdevice
2026/08/31 01:51 upstream a23cbb05744b 2f52988a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in register_netdevice
2026/08/23 16:25 upstream 2709dd5ae32f 1e72964b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in register_netdevice
2026/08/15 13:44 upstream 15ef2f78c49d 746171ee .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in register_netdevice
2026/08/12 06:59 upstream f5bbbfec59b4 f8d35649 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in register_netdevice
2026/08/08 17:39 upstream a59f57e2aa12 5d63f80b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 kernel BUG in register_netdevice
2026/08/27 07:51 linux-next f82a5da2f049 a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in register_netdevice
2026/08/12 18:29 linux-next 5e6de6a2b522 7ae4acc7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in register_netdevice
2026/08/11 06:08 linux-next 3d08ff75a47a 039457bd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in register_netdevice
2026/08/10 11:57 linux-next 6b8c8af514d7 558388e4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in register_netdevice
2026/08/10 01:02 linux-next cc2b5f627e8c 5d63f80b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce kernel BUG in register_netdevice
2026/08/01 22:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e2d5e23967d0 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in register_netdevice
* Struck through repros no longer work on HEAD.