ci2 starts bisection 2026-11-10 17:01:20.821955207 +0000 UTC m=+10460.342851028
bisecting fixing commit since e4f7d8be268ecf717f94ee2e242afa79ddeacaed
building syzkaller on 508909ea7a40f86e8559dc66f197abec6c862b01
ensuring issue is reproducible on original commit e4f7d8be268ecf717f94ee2e242afa79ddeacaed

testing commit e4f7d8be268ecf717f94ee2e242afa79ddeacaed gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 881755fc207200fa1c5809a6df84a63dd1f1eeee9f71ff61f3ea893f529e456d
all runs: crashed: WARNING in netdev_init_one_queue
representative crash: WARNING in netdev_init_one_queue, types: [WARNING]
check whether we can drop unnecessary instrumentation
disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed
testing commit e4f7d8be268ecf717f94ee2e242afa79ddeacaed gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 95d14085d47c9cdf3803392caded4043d45be750465408884be2396ee75be718
all runs: crashed: WARNING in netdev_init_one_queue
representative crash: WARNING in netdev_init_one_queue, types: [WARNING]
the bug reproduces without the instrumentation
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
kconfig minimization: base=7508 full=9788 leaves diff=2007
split chunks (needed=false): <2007>
split chunk #0 of len 2007 into 5 parts
testing without sub-chunk 1/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit e4f7d8be268ecf717f94ee2e242afa79ddeacaed gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: c82d834a753c544a119a92302e9258996336b0782eccee0d6e9fcc6e3b35d96e
all runs: crashed: WARNING in netdev_init_one_queue
representative crash: WARNING in netdev_init_one_queue, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed
testing commit e4f7d8be268ecf717f94ee2e242afa79ddeacaed gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 05e42e1d7bb7ab96ab19a1434dc6c76e52e3bdd754fe4d3fe9a1e6b295691671
run #0: infra problem: failed to create instance: googleapi: Error 503: Internal error. Please try again or contact Google Support. (Code: '65FEFD1492D23.13F44BB.5D355358'), backendError
run #1: crashed: WARNING in netdev_init_one_queue
run #2: crashed: WARNING in netdev_init_one_queue
run #3: crashed: WARNING in netdev_init_one_queue
run #4: crashed: WARNING in netdev_init_one_queue
run #5: crashed: WARNING in netdev_init_one_queue
run #6: crashed: WARNING in netdev_init_one_queue
run #7: crashed: WARNING in netdev_init_one_queue
run #8: crashed: WARNING in netdev_init_one_queue
run #9: crashed: WARNING in netdev_init_one_queue
representative crash: WARNING in netdev_init_one_queue, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed
testing commit e4f7d8be268ecf717f94ee2e242afa79ddeacaed gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 001b0fe316b42bebcb30fd74abd5cd316649bdd2ec2ac652d2986c3bd40728ad
all runs: crashed: WARNING in netdev_init_one_queue
representative crash: WARNING in netdev_init_one_queue, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [memleak ubsan kasan locking atomic_sleep hang], they are not needed
testing commit e4f7d8be268ecf717f94ee2e242afa79ddeacaed gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 2091547135bc67b5e7c90550d17b38efa76860d1300e0a09b610b15c6e651c5e
all runs: crashed: WARNING in netdev_init_one_queue
representative crash: WARNING in netdev_init_one_queue, types: [WARNING]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed
testing commit e4f7d8be268ecf717f94ee2e242afa79ddeacaed gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: 000389e0e7342cfcba9e4ee48fd6076ef31d757149cfb6e6b3345be05706e4b9
all runs: crashed: WARNING in netdev_init_one_queue
representative crash: WARNING in netdev_init_one_queue, types: [WARNING]
the chunk can be dropped
disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed
testing current HEAD c75b0cf0982c00cddfd88d1acf3872f79b40980c
testing commit c75b0cf0982c00cddfd88d1acf3872f79b40980c gcc
compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8
kernel signature: d351f1930acb1c4b21f5f6ead5038d597360f0da0fb31e1e60a4c0acc2702879
all runs: crashed: WARNING in netdev_init_one_queue
representative crash: WARNING in netdev_init_one_queue, types: [WARNING]
crash still not fixed/happens on the oldest tested release
revisions tested: 8, total time: 2h30m33.707054133s (build: 1h21m31.269835755s, test: 59m6.32663885s)
crash still not fixed or there were kernel test errors
commit msg: Linux 6.1.192
crash: WARNING in netdev_init_one_queue
------------[ cut here ]------------
netdev_lock_pos() could not find dev_type=796
WARNING: CPU: 0 PID: 3004 at net/core/dev.c:502 netdev_lock_pos net/core/dev.c:502 [inline]
WARNING: CPU: 0 PID: 3004 at net/core/dev.c:502 netdev_set_xmit_lockdep_class net/core/dev.c:511 [inline]
WARNING: CPU: 0 PID: 3004 at net/core/dev.c:502 netdev_init_one_queue+0xdc/0xe4 net/core/dev.c:10053
Modules linked in:
CPU: 0 PID: 3004 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : netdev_lock_pos net/core/dev.c:502 [inline]
pc : netdev_set_xmit_lockdep_class net/core/dev.c:511 [inline]
pc : netdev_init_one_queue+0xdc/0xe4 net/core/dev.c:10053
lr : netdev_lock_pos net/core/dev.c:502 [inline]
lr : netdev_set_xmit_lockdep_class net/core/dev.c:511 [inline]
lr : netdev_init_one_queue+0xdc/0xe4 net/core/dev.c:10053
sp : ffff8000124336d0
x29: ffff8000124336d0 x28: ffff0000c3d99900 x27: ffff0000c2da6300
x26: ffff800009f5d503 x25: ffff800009f5d230 x24: ffff0000c51c0000
x23: ffff0000c4083240 x22: 00000000fffffff1 x21: ffff0000c5ca4500
x20: ffff0000c51c0000 x19: ffff0000c41a8600 x18: 0000000000026400
x17: 0000000000000001 x16: 0000000000000000 x15: 000000000000014b
x14: 0000000000100000 x13: 0000000002f93cb8 x12: ffff80000e90d000
x11: 0000000000000001 x10: 00000000ffffffff x9 : ab6d6861d6c25f00
x8 : ab6d6861d6c25f00 x7 : 0000000000000000 x6 : ffff8000080d5df8
x5 : 0000000000000000 x4 : 0000000000000080 x3 : 0000000000000000
x2 : 0000000000000000 x1 : ffff80000a5fb650 x0 : 0000000000000001
Call trace:
 netdev_lock_pos net/core/dev.c:502 [inline]
 netdev_set_xmit_lockdep_class net/core/dev.c:511 [inline]
 netdev_init_one_queue+0xdc/0xe4 net/core/dev.c:10053
 dev_ingress_queue_create+0x44/0x70 net/core/dev.c:10725
 tc_modify_qdisc+0x148/0x6c8 net/sched/sch_api.c:1633
 rtnetlink_rcv_msg+0x274/0x3f4 net/core/rtnetlink.c:6166
 netlink_rcv_skb+0x108/0x120 net/netlink/af_netlink.c:2516
 rtnetlink_rcv+0x18/0x24 net/core/rtnetlink.c:6184
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x1c0/0x394 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x2cc/0x3c0 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x1dc/0x2f4 net/socket.c:2519
 ___sys_sendmsg net/socket.c:2573 [inline]
 __sys_sendmsg+0x124/0x188 net/socket.c:2602
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg net/socket.c:2609 [inline]
 __arm64_sys_sendmsg+0x24/0x30 net/socket.c:2609
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x40/0xdc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0xb0/0xe8 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x24/0x80 arch/arm64/kernel/syscall.c:204
 el0_svc+0x34/0xd4 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
---[ end trace 0000000000000000 ]---