==================================================================
BUG: KASAN: slab-use-after-free in netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
BUG: KASAN: slab-use-after-free in netdev_unlock_ops include/net/netdev_lock.h:47 [inline]
BUG: KASAN: slab-use-after-free in __linkwatch_run_queue+0x7d8/0x8a0 net/core/link_watch.c:245
Read of size 8 at addr ffff88807a5ecb88 by task kworker/u8:15/10499
CPU: 1 UID: 0 PID: 10499 Comm: kworker/u8:15 Not tainted 6.16.0-rc5-syzkaller-00276-g5d5d62298b8b #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_unbound linkwatch_event
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xcd/0x610 mm/kasan/report.c:480
kasan_report+0xe0/0x110 mm/kasan/report.c:593
netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
netdev_unlock_ops include/net/netdev_lock.h:47 [inline]
__linkwatch_run_queue+0x7d8/0x8a0 net/core/link_watch.c:245
linkwatch_event+0x8f/0xc0 net/core/link_watch.c:304
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3321 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 10070:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4328 [inline]
__kvmalloc_node_noprof+0x27b/0x620 mm/slub.c:5015
alloc_netdev_mqs+0xd2/0x1570 net/core/dev.c:11711
rtnl_create_link+0xc08/0xf90 net/core/rtnetlink.c:3631
rtnl_newlink_create net/core/rtnetlink.c:3813 [inline]
__rtnl_newlink net/core/rtnetlink.c:3940 [inline]
rtnl_newlink+0xb69/0x2000 net/core/rtnetlink.c:4055
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6944
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x58d/0x850 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1896
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg net/socket.c:727 [inline]
__sys_sendto+0x4a3/0x520 net/socket.c:2180
__do_sys_sendto net/socket.c:2187 [inline]
__se_sys_sendto net/socket.c:2183 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2183
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 2989:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2381 [inline]
slab_free mm/slub.c:4643 [inline]
kfree+0x2b4/0x4d0 mm/slub.c:4842
device_release+0xa4/0x240 drivers/base/core.c:2568
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e7/0x5a0 lib/kobject.c:737
netdev_run_todo+0x7e9/0x1320 net/core/dev.c:11412
default_device_exit_batch+0x858/0xaf0 net/core/dev.c:12645
ops_exit_list net/core/net_namespace.c:206 [inline]
ops_undo_list+0x363/0xab0 net/core/net_namespace.c:253
cleanup_net+0x408/0x890 net/core/net_namespace.c:686
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3321 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff88807a5ec000
which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 2952 bytes inside of
freed 4096-byte region [ffff88807a5ec000, ffff88807a5ed000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7a5e8
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff8880760a0481
anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b84b500 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000040004 00000000f5000000 ffff8880760a0481
head: 00fff00000000040 ffff88801b84b500 0000000000000000 dead000000000001
head: 0000000000000000 0000000000040004 00000000f5000000 ffff8880760a0481
head: 00fff00000000003 ffffea0001e97a01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 10150, tgid 10150 (syz-executor), ts 668758626733, free_ts 668517111390
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1c0/0x230 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x1321/0x3890 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x261/0x23f0 mm/page_alloc.c:4959
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2419
alloc_slab_page mm/slub.c:2451 [inline]
allocate_slab mm/slub.c:2619 [inline]
new_slab+0x23b/0x330 mm/slub.c:2673
___slab_alloc+0xd9c/0x1940 mm/slub.c:3859
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3949
__slab_alloc_node mm/slub.c:4024 [inline]
slab_alloc_node mm/slub.c:4185 [inline]
__do_kmalloc_node mm/slub.c:4327 [inline]
__kmalloc_node_track_caller_noprof+0x2ee/0x510 mm/slub.c:4347
kmemdup_noprof+0x29/0x60 mm/util.c:137
kmemdup_noprof include/linux/fortify-string.h:765 [inline]
__addrconf_sysctl_register+0xbb/0x360 net/ipv6/addrconf.c:7225
addrconf_sysctl_register net/ipv6/addrconf.c:7291 [inline]
addrconf_sysctl_register+0x15f/0x1f0 net/ipv6/addrconf.c:7280
ipv6_add_dev+0xb39/0x15f0 net/ipv6/addrconf.c:458
addrconf_notify+0x53e/0x19e0 net/ipv6/addrconf.c:3649
notifier_call_chain+0xbc/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2230
call_netdevice_notifiers_extack net/core/dev.c:2268 [inline]
call_netdevice_notifiers net/core/dev.c:2282 [inline]
register_netdevice+0x182e/0x2270 net/core/dev.c:11143
page last free pid 10150 tgid 10150 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0x7fe/0x1180 mm/page_alloc.c:2706
discard_slab mm/slub.c:2717 [inline]
__put_partials+0x16d/0x1c0 mm/slub.c:3186
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
__kmalloc_cache_noprof+0x1f1/0x3e0 mm/slub.c:4354
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1039 [inline]
kobject_uevent_env+0x265/0x1870 lib/kobject_uevent.c:540
__kobject_del+0x168/0x1f0 lib/kobject.c:601
kobject_cleanup lib/kobject.c:680 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x327/0x5a0 lib/kobject.c:737
net_rx_queue_update_kobjects+0x547/0x770 net/core/net-sysfs.c:1317
netif_set_real_num_rx_queues+0x171/0x220 net/core/dev.c:3235
veth_init_queues+0x151/0x190 drivers/net/veth.c:1798
veth_newlink+0x49c/0xa00 drivers/net/veth.c:1896
rtnl_newlink_create net/core/rtnetlink.c:3823 [inline]
__rtnl_newlink net/core/rtnetlink.c:3940 [inline]
rtnl_newlink+0xc45/0x2000 net/core/rtnetlink.c:4055
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6944
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552
Memory state around the buggy address:
ffff88807a5eca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807a5ecb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807a5ecb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807a5ecc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807a5ecc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in netdev_need_ops_lock include/net/netdev_lock.h:33 [inline]
BUG: KASAN: slab-use-after-free in netdev_unlock_ops include/net/netdev_lock.h:47 [inline]
BUG: KASAN: slab-use-after-free in __linkwatch_run_queue+0x883/0x8a0 net/core/link_watch.c:245
Read of size 8 at addr ffff88807a5ec008 by task kworker/u8:15/10499
CPU: 1 UID: 0 PID: 10499 Comm: kworker/u8:15 Tainted: G B 6.16.0-rc5-syzkaller-00276-g5d5d62298b8b #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_unbound linkwatch_event
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xcd/0x610 mm/kasan/report.c:480
kasan_report+0xe0/0x110 mm/kasan/report.c:593
netdev_need_ops_lock include/net/netdev_lock.h:33 [inline]
netdev_unlock_ops include/net/netdev_lock.h:47 [inline]
__linkwatch_run_queue+0x883/0x8a0 net/core/link_watch.c:245
linkwatch_event+0x8f/0xc0 net/core/link_watch.c:304
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3321 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 10070:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4328 [inline]
__kvmalloc_node_noprof+0x27b/0x620 mm/slub.c:5015
alloc_netdev_mqs+0xd2/0x1570 net/core/dev.c:11711
rtnl_create_link+0xc08/0xf90 net/core/rtnetlink.c:3631
rtnl_newlink_create net/core/rtnetlink.c:3813 [inline]
__rtnl_newlink net/core/rtnetlink.c:3940 [inline]
rtnl_newlink+0xb69/0x2000 net/core/rtnetlink.c:4055
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6944
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x58d/0x850 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1896
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg net/socket.c:727 [inline]
__sys_sendto+0x4a3/0x520 net/socket.c:2180
__do_sys_sendto net/socket.c:2187 [inline]
__se_sys_sendto net/socket.c:2183 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2183
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 2989:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2381 [inline]
slab_free mm/slub.c:4643 [inline]
kfree+0x2b4/0x4d0 mm/slub.c:4842
device_release+0xa4/0x240 drivers/base/core.c:2568
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e7/0x5a0 lib/kobject.c:737
netdev_run_todo+0x7e9/0x1320 net/core/dev.c:11412
default_device_exit_batch+0x858/0xaf0 net/core/dev.c:12645
ops_exit_list net/core/net_namespace.c:206 [inline]
ops_undo_list+0x363/0xab0 net/core/net_namespace.c:253
cleanup_net+0x408/0x890 net/core/net_namespace.c:686
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3321 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff88807a5ec000
which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 8 bytes inside of
freed 4096-byte region [ffff88807a5ec000, ffff88807a5ed000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7a5e8
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff8880760a0481
anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b84b500 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000040004 00000000f5000000 ffff8880760a0481
head: 00fff00000000040 ffff88801b84b500 0000000000000000 dead000000000001
head: 0000000000000000 0000000000040004 00000000f5000000 ffff8880760a0481
head: 00fff00000000003 ffffea0001e97a01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 10150, tgid 10150 (syz-executor), ts 668758626733, free_ts 668517111390
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1c0/0x230 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x1321/0x3890 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x261/0x23f0 mm/page_alloc.c:4959
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2419
alloc_slab_page mm/slub.c:2451 [inline]
allocate_slab mm/slub.c:2619 [inline]
new_slab+0x23b/0x330 mm/slub.c:2673
___slab_alloc+0xd9c/0x1940 mm/slub.c:3859
__slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3949
__slab_alloc_node mm/slub.c:4024 [inline]
slab_alloc_node mm/slub.c:4185 [inline]
__do_kmalloc_node mm/slub.c:4327 [inline]
__kmalloc_node_track_caller_noprof+0x2ee/0x510 mm/slub.c:4347
kmemdup_noprof+0x29/0x60 mm/util.c:137
kmemdup_noprof include/linux/fortify-string.h:765 [inline]
__addrconf_sysctl_register+0xbb/0x360 net/ipv6/addrconf.c:7225
addrconf_sysctl_register net/ipv6/addrconf.c:7291 [inline]
addrconf_sysctl_register+0x15f/0x1f0 net/ipv6/addrconf.c:7280
ipv6_add_dev+0xb39/0x15f0 net/ipv6/addrconf.c:458
addrconf_notify+0x53e/0x19e0 net/ipv6/addrconf.c:3649
notifier_call_chain+0xbc/0x410 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2230
call_netdevice_notifiers_extack net/core/dev.c:2268 [inline]
call_netdevice_notifiers net/core/dev.c:2282 [inline]
register_netdevice+0x182e/0x2270 net/core/dev.c:11143
page last free pid 10150 tgid 10150 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0x7fe/0x1180 mm/page_alloc.c:2706
discard_slab mm/slub.c:2717 [inline]
__put_partials+0x16d/0x1c0 mm/slub.c:3186
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x4d/0x120 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
__kmalloc_cache_noprof+0x1f1/0x3e0 mm/slub.c:4354
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1039 [inline]
kobject_uevent_env+0x265/0x1870 lib/kobject_uevent.c:540
__kobject_del+0x168/0x1f0 lib/kobject.c:601
kobject_cleanup lib/kobject.c:680 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x327/0x5a0 lib/kobject.c:737
net_rx_queue_update_kobjects+0x547/0x770 net/core/net-sysfs.c:1317
netif_set_real_num_rx_queues+0x171/0x220 net/core/dev.c:3235
veth_init_queues+0x151/0x190 drivers/net/veth.c:1798
veth_newlink+0x49c/0xa00 drivers/net/veth.c:1896
rtnl_newlink_create net/core/rtnetlink.c:3823 [inline]
__rtnl_newlink net/core/rtnetlink.c:3940 [inline]
rtnl_newlink+0xc45/0x2000 net/core/rtnetlink.c:4055
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6944
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552
Memory state around the buggy address:
ffff88807a5ebf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88807a5ebf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807a5ec000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88807a5ec080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88807a5ec100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Oops: general protection fault, probably for non-canonical address 0xe01d7c6e400001ca: 0000 [#1] SMP KASAN NOPTI
KASAN: maybe wild-memory-access in range [0x00ec037200000e50-0x00ec037200000e57]
CPU: 0 UID: 0 PID: 10499 Comm: kworker/u8:15 Tainted: G B 6.16.0-rc5-syzkaller-00276-g5d5d62298b8b #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: events_unbound linkwatch_event
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:33 [inline]
RIP: 0010:netdev_unlock_ops include/net/netdev_lock.h:47 [inline]
RIP: 0010:__linkwatch_run_queue+0x654/0x8a0 net/core/link_watch.c:245
Code: 80 3c 02 00 0f 85 4a 02 00 00 4c 8b a3 68 f9 ff ff 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 a8 02 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 16 02 00 00 49 83 bc 24 a8 02 00 00 00 0f 84 ad
RSP: 0018:ffffc90004887b50 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: ffff88807a5ec6a0 RCX: ffffffff817b053f
RDX: 001d806e400001ca RSI: ffffffff8221adf7 RDI: 00ec037200000e55
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 3d3d3d3d3d3d3d3d R12: 00ec037200000bad
R13: 000000000000004b R14: 0000000000000000 R15: ffffc90004887b90
FS: 0000000000000000(0000) GS:ffff88812471a000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561569557aa8 CR3: 000000000e382000 CR4: 0000000000350ef0
Call Trace:
linkwatch_event+0x8f/0xc0 net/core/link_watch.c:304
process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3321 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
kthread+0x3c5/0x780 kernel/kthread.c:464
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:33 [inline]
RIP: 0010:netdev_unlock_ops include/net/netdev_lock.h:47 [inline]
RIP: 0010:__linkwatch_run_queue+0x654/0x8a0 net/core/link_watch.c:245
Code: 80 3c 02 00 0f 85 4a 02 00 00 4c 8b a3 68 f9 ff ff 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 a8 02 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 16 02 00 00 49 83 bc 24 a8 02 00 00 00 0f 84 ad
RSP: 0018:ffffc90004887b50 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: ffff88807a5ec6a0 RCX: ffffffff817b053f
RDX: 001d806e400001ca RSI: ffffffff8221adf7 RDI: 00ec037200000e55
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 3d3d3d3d3d3d3d3d R12: 00ec037200000bad
R13: 000000000000004b R14: 0000000000000000 R15: ffffc90004887b90
FS: 0000000000000000(0000) GS:ffff88812481a000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561569571548 CR3: 0000000035762000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
0: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
4: 0f 85 4a 02 00 00 jne 0x254
a: 4c 8b a3 68 f9 ff ff mov -0x698(%rbx),%r12
11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
18: fc ff df
1b: 49 8d bc 24 a8 02 00 lea 0x2a8(%r12),%rdi
22: 00
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 16 02 00 00 jne 0x24a
34: 49 83 bc 24 a8 02 00 cmpq $0x0,0x2a8(%r12)
3b: 00 00
3d: 0f .byte 0xf
3e: 84 .byte 0x84
3f: ad lods %ds:(%rsi),%eax