==================================================================
BUG: KASAN: slab-use-after-free in __ethtool_get_link_ksettings+0x190/0x1c0 net/ethtool/ioctl.c:444
Read of size 8 at addr ffff88803790e2f0 by task kworker/0:3/5751
CPU: 0 UID: 0 PID: 5751 Comm: kworker/0:3 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events smc_ib_port_event_work
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x13d/0x4b0 mm/kasan/report.c:482
kasan_report+0xdf/0x1d0 mm/kasan/report.c:595
__ethtool_get_link_ksettings+0x190/0x1c0 net/ethtool/ioctl.c:444
__ethtool_get_link_ksettings+0x144/0x1c0 net/ethtool/ioctl.c:451
ib_get_eth_speed+0x13a/0xb40 drivers/infiniband/core/verbs.c:2055
rxe_query_port+0x12a/0x330 drivers/infiniband/sw/rxe/rxe_verbs.c:62
__ib_query_port drivers/infiniband/core/device.c:2121 [inline]
ib_query_port drivers/infiniband/core/device.c:2153 [inline]
ib_query_port+0x445/0x8b0 drivers/infiniband/core/device.c:2143
smc_ib_remember_port_attr net/smc/smc_ib.c:364 [inline]
smc_ib_port_event_work+0x14c/0xbd0 net/smc/smc_ib.c:388
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 5631:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5296 [inline]
__kvmalloc_node_noprof+0x360/0xa00 mm/slub.c:6833
alloc_netdev_mqs+0xd7/0x1560 net/core/dev.c:12029
rtnl_create_link+0xc13/0xf80 net/core/rtnetlink.c:3672
rtnl_newlink_create net/core/rtnetlink.c:3854 [inline]
__rtnl_newlink net/core/rtnetlink.c:3995 [inline]
rtnl_newlink+0x13bd/0x2380 net/core/rtnetlink.c:4110
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6997
netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2555
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1899
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
__sys_sendto+0x468/0x4b0 net/socket.c:2265
__do_sys_sendto net/socket.c:2272 [inline]
__se_sys_sendto net/socket.c:2268 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2268
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 6140:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2689 [inline]
slab_free mm/slub.c:6251 [inline]
kfree+0x223/0x6c0 mm/slub.c:6566
device_release+0xd2/0x270 drivers/base/core.c:2566
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1f7/0x640 lib/kobject.c:737
netdev_run_todo+0x80f/0x12b0 net/core/dev.c:11730
default_device_exit_batch+0x92b/0xc10 net/core/dev.c:13077
ops_exit_list net/core/net_namespace.c:205 [inline]
ops_undo_list+0x363/0xab0 net/core/net_namespace.c:252
cleanup_net+0x499/0x920 net/core/net_namespace.c:702
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff88803790e000
which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 752 bytes inside of
freed 4096-byte region [ffff88803790e000, ffff88803790f000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x37908
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff8880263ac601
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813fe48500 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800040004 00000000f5000000 ffff8880263ac601
head: 00fff00000000040 ffff88813fe48500 dead000000000100 dead000000000122
head: 0000000000000000 0000000800040004 00000000f5000000 ffff8880263ac601
head: 00fff00000000003 fffffffffffffe01 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 5631, tgid 5631 (syz-executor), ts 96384368209, free_ts 59528166825
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x11a6/0x3410 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x27c/0x2bc0 mm/page_alloc.c:5221
alloc_slab_page mm/slub.c:3278 [inline]
allocate_slab mm/slub.c:3467 [inline]
new_slab+0xa6/0x6c0 mm/slub.c:3525
refill_objects+0x277/0x420 mm/slub.c:7272
refill_sheaf mm/slub.c:2816 [inline]
__pcs_replace_empty_main+0x375/0x650 mm/slub.c:4652
alloc_from_pcs mm/slub.c:4750 [inline]
slab_alloc_node mm/slub.c:4884 [inline]
__kmalloc_cache_noprof+0x493/0x6f0 mm/slub.c:5415
kmalloc_noprof include/linux/slab.h:950 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
snmp6_alloc_dev net/ipv6/addrconf.c:362 [inline]
ipv6_add_dev+0x670/0x1520 net/ipv6/addrconf.c:413
addrconf_notify+0x5db/0x1ba0 net/ipv6/addrconf.c:3662
notifier_call_chain+0x99/0x400 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x110 net/core/dev.c:2249
call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]
call_netdevice_notifiers net/core/dev.c:2301 [inline]
register_netdevice+0x18fe/0x24b0 net/core/dev.c:11461
virt_wifi_newlink+0x3ec/0x840 drivers/net/wireless/virtual/virt_wifi.c:572
rtnl_newlink_create net/core/rtnetlink.c:3864 [inline]
__rtnl_newlink net/core/rtnetlink.c:3995 [inline]
rtnl_newlink+0x1499/0x2380 net/core/rtnetlink.c:4110
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6997
netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2555
page last free pid 5350 tgid 5350 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0x794/0x10a0 mm/page_alloc.c:2938
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4570 [inline]
slab_alloc_node mm/slub.c:4899 [inline]
__kmalloc_cache_noprof+0x243/0x6f0 mm/slub.c:5415
kmalloc_noprof include/linux/slab.h:950 [inline]
tomoyo_print_header security/tomoyo/audit.c:156 [inline]
tomoyo_init_log+0x1a0/0x20c0 security/tomoyo/audit.c:253
tomoyo_supervisor+0x506/0x1340 security/tomoyo/common.c:2232
tomoyo_audit_path_log security/tomoyo/file.c:169 [inline]
tomoyo_path_permission security/tomoyo/file.c:592 [inline]
tomoyo_path_permission+0x270/0x3b0 security/tomoyo/file.c:577
tomoyo_check_open_permission+0x37f/0x3c0 security/tomoyo/file.c:782
tomoyo_file_open+0x6b/0x90 security/tomoyo/tomoyo.c:334
security_file_open+0xb5/0x1e0 security/security.c:2739
do_dentry_open+0x588/0x14d0 fs/open.c:924
vfs_open+0x82/0x3f0 fs/open.c:1079
do_open fs/namei.c:4699 [inline]
path_openat+0x208c/0x31a0 fs/namei.c:4858
do_file_open+0x20e/0x430 fs/namei.c:4887
do_sys_openat2+0x10d/0x1e0 fs/open.c:1364
Memory state around the buggy address:
ffff88803790e180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803790e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88803790e280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88803790e300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803790e380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read include/linux/instrumented.h:82 [inline]
BUG: KASAN: slab-use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: slab-use-after-free in netif_device_present include/linux/netdevice.h:4697 [inline]
BUG: KASAN: slab-use-after-free in __ethtool_get_link_ksettings+0xa4/0x1c0 net/ethtool/ioctl.c:447
Read of size 8 at addr ffff88803790e0a8 by task kworker/0:3/5751
CPU: 0 UID: 0 PID: 5751 Comm: kworker/0:3 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events smc_ib_port_event_work
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x13d/0x4b0 mm/kasan/report.c:482
kasan_report+0xdf/0x1d0 mm/kasan/report.c:595
check_region_inline mm/kasan/generic.c:186 [inline]
kasan_check_range+0x10f/0x1e0 mm/kasan/generic.c:200
instrument_atomic_read include/linux/instrumented.h:82 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
netif_device_present include/linux/netdevice.h:4697 [inline]
__ethtool_get_link_ksettings+0xa4/0x1c0 net/ethtool/ioctl.c:447
__ethtool_get_link_ksettings+0x144/0x1c0 net/ethtool/ioctl.c:451
ib_get_eth_speed+0x13a/0xb40 drivers/infiniband/core/verbs.c:2055
rxe_query_port+0x12a/0x330 drivers/infiniband/sw/rxe/rxe_verbs.c:62
__ib_query_port drivers/infiniband/core/device.c:2121 [inline]
ib_query_port drivers/infiniband/core/device.c:2153 [inline]
ib_query_port+0x445/0x8b0 drivers/infiniband/core/device.c:2143
smc_ib_remember_port_attr net/smc/smc_ib.c:364 [inline]
smc_ib_port_event_work+0x14c/0xbd0 net/smc/smc_ib.c:388
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 5631:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5296 [inline]
__kvmalloc_node_noprof+0x360/0xa00 mm/slub.c:6833
alloc_netdev_mqs+0xd7/0x1560 net/core/dev.c:12029
rtnl_create_link+0xc13/0xf80 net/core/rtnetlink.c:3672
rtnl_newlink_create net/core/rtnetlink.c:3854 [inline]
__rtnl_newlink net/core/rtnetlink.c:3995 [inline]
rtnl_newlink+0x13bd/0x2380 net/core/rtnetlink.c:4110
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6997
netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2555
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1899
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
__sys_sendto+0x468/0x4b0 net/socket.c:2265
__do_sys_sendto net/socket.c:2272 [inline]
__se_sys_sendto net/socket.c:2268 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2268
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 6140:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2689 [inline]
slab_free mm/slub.c:6251 [inline]
kfree+0x223/0x6c0 mm/slub.c:6566
device_release+0xd2/0x270 drivers/base/core.c:2566
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1f7/0x640 lib/kobject.c:737
netdev_run_todo+0x80f/0x12b0 net/core/dev.c:11730
default_device_exit_batch+0x92b/0xc10 net/core/dev.c:13077
ops_exit_list net/core/net_namespace.c:205 [inline]
ops_undo_list+0x363/0xab0 net/core/net_namespace.c:252
cleanup_net+0x499/0x920 net/core/net_namespace.c:702
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff88803790e000
which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 168 bytes inside of
freed 4096-byte region [ffff88803790e000, ffff88803790f000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x37908
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff8880263ac601
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813fe48500 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800040004 00000000f5000000 ffff8880263ac601
head: 00fff00000000040 ffff88813fe48500 dead000000000100 dead000000000122
head: 0000000000000000 0000000800040004 00000000f5000000 ffff8880263ac601
head: 00fff00000000003 fffffffffffffe01 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 5631, tgid 5631 (syz-executor), ts 96384368209, free_ts 59528166825
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x11a6/0x3410 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x27c/0x2bc0 mm/page_alloc.c:5221
alloc_slab_page mm/slub.c:3278 [inline]
allocate_slab mm/slub.c:3467 [inline]
new_slab+0xa6/0x6c0 mm/slub.c:3525
refill_objects+0x277/0x420 mm/slub.c:7272
refill_sheaf mm/slub.c:2816 [inline]
__pcs_replace_empty_main+0x375/0x650 mm/slub.c:4652
alloc_from_pcs mm/slub.c:4750 [inline]
slab_alloc_node mm/slub.c:4884 [inline]
__kmalloc_cache_noprof+0x493/0x6f0 mm/slub.c:5415
kmalloc_noprof include/linux/slab.h:950 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
snmp6_alloc_dev net/ipv6/addrconf.c:362 [inline]
ipv6_add_dev+0x670/0x1520 net/ipv6/addrconf.c:413
addrconf_notify+0x5db/0x1ba0 net/ipv6/addrconf.c:3662
notifier_call_chain+0x99/0x400 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x110 net/core/dev.c:2249
call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]
call_netdevice_notifiers net/core/dev.c:2301 [inline]
register_netdevice+0x18fe/0x24b0 net/core/dev.c:11461
virt_wifi_newlink+0x3ec/0x840 drivers/net/wireless/virtual/virt_wifi.c:572
rtnl_newlink_create net/core/rtnetlink.c:3864 [inline]
__rtnl_newlink net/core/rtnetlink.c:3995 [inline]
rtnl_newlink+0x1499/0x2380 net/core/rtnetlink.c:4110
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6997
netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2555
page last free pid 5350 tgid 5350 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0x794/0x10a0 mm/page_alloc.c:2938
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4570 [inline]
slab_alloc_node mm/slub.c:4899 [inline]
__kmalloc_cache_noprof+0x243/0x6f0 mm/slub.c:5415
kmalloc_noprof include/linux/slab.h:950 [inline]
tomoyo_print_header security/tomoyo/audit.c:156 [inline]
tomoyo_init_log+0x1a0/0x20c0 security/tomoyo/audit.c:253
tomoyo_supervisor+0x506/0x1340 security/tomoyo/common.c:2232
tomoyo_audit_path_log security/tomoyo/file.c:169 [inline]
tomoyo_path_permission security/tomoyo/file.c:592 [inline]
tomoyo_path_permission+0x270/0x3b0 security/tomoyo/file.c:577
tomoyo_check_open_permission+0x37f/0x3c0 security/tomoyo/file.c:782
tomoyo_file_open+0x6b/0x90 security/tomoyo/tomoyo.c:334
security_file_open+0xb5/0x1e0 security/security.c:2739
do_dentry_open+0x588/0x14d0 fs/open.c:924
vfs_open+0x82/0x3f0 fs/open.c:1079
do_open fs/namei.c:4699 [inline]
path_openat+0x208c/0x31a0 fs/namei.c:4858
do_file_open+0x20e/0x430 fs/namei.c:4887
do_sys_openat2+0x10d/0x1e0 fs/open.c:1364
Memory state around the buggy address:
ffff88803790df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88803790e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88803790e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88803790e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803790e180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in constant_test_bit arch/x86/include/asm/bitops.h:202 [inline]
BUG: KASAN: slab-use-after-free in arch_test_bit arch/x86/include/asm/bitops.h:232 [inline]
BUG: KASAN: slab-use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
BUG: KASAN: slab-use-after-free in netif_device_present include/linux/netdevice.h:4697 [inline]
BUG: KASAN: slab-use-after-free in __ethtool_get_link_ksettings+0x19d/0x1c0 net/ethtool/ioctl.c:447
Read of size 8 at addr ffff88803790e0a8 by task kworker/0:3/5751
CPU: 0 UID: 0 PID: 5751 Comm: kworker/0:3 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events smc_ib_port_event_work
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x13d/0x4b0 mm/kasan/report.c:482
kasan_report+0xdf/0x1d0 mm/kasan/report.c:595
constant_test_bit arch/x86/include/asm/bitops.h:202 [inline]
arch_test_bit arch/x86/include/asm/bitops.h:232 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
netif_device_present include/linux/netdevice.h:4697 [inline]
__ethtool_get_link_ksettings+0x19d/0x1c0 net/ethtool/ioctl.c:447
__ethtool_get_link_ksettings+0x144/0x1c0 net/ethtool/ioctl.c:451
ib_get_eth_speed+0x13a/0xb40 drivers/infiniband/core/verbs.c:2055
rxe_query_port+0x12a/0x330 drivers/infiniband/sw/rxe/rxe_verbs.c:62
__ib_query_port drivers/infiniband/core/device.c:2121 [inline]
ib_query_port drivers/infiniband/core/device.c:2153 [inline]
ib_query_port+0x445/0x8b0 drivers/infiniband/core/device.c:2143
smc_ib_remember_port_attr net/smc/smc_ib.c:364 [inline]
smc_ib_port_event_work+0x14c/0xbd0 net/smc/smc_ib.c:388
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 5631:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5296 [inline]
__kvmalloc_node_noprof+0x360/0xa00 mm/slub.c:6833
alloc_netdev_mqs+0xd7/0x1560 net/core/dev.c:12029
rtnl_create_link+0xc13/0xf80 net/core/rtnetlink.c:3672
rtnl_newlink_create net/core/rtnetlink.c:3854 [inline]
__rtnl_newlink net/core/rtnetlink.c:3995 [inline]
rtnl_newlink+0x13bd/0x2380 net/core/rtnetlink.c:4110
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6997
netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2555
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1899
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
__sys_sendto+0x468/0x4b0 net/socket.c:2265
__do_sys_sendto net/socket.c:2272 [inline]
__se_sys_sendto net/socket.c:2268 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2268
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 6140:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2689 [inline]
slab_free mm/slub.c:6251 [inline]
kfree+0x223/0x6c0 mm/slub.c:6566
device_release+0xd2/0x270 drivers/base/core.c:2566
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1f7/0x640 lib/kobject.c:737
netdev_run_todo+0x80f/0x12b0 net/core/dev.c:11730
default_device_exit_batch+0x92b/0xc10 net/core/dev.c:13077
ops_exit_list net/core/net_namespace.c:205 [inline]
ops_undo_list+0x363/0xab0 net/core/net_namespace.c:252
cleanup_net+0x499/0x920 net/core/net_namespace.c:702
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff88803790e000
which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 168 bytes inside of
freed 4096-byte region [ffff88803790e000, ffff88803790f000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x37908
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff8880263ac601
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813fe48500 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800040004 00000000f5000000 ffff8880263ac601
head: 00fff00000000040 ffff88813fe48500 dead000000000100 dead000000000122
head: 0000000000000000 0000000800040004 00000000f5000000 ffff8880263ac601
head: 00fff00000000003 fffffffffffffe01 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 5631, tgid 5631 (syz-executor), ts 96384368209, free_ts 59528166825
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x11a6/0x3410 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x27c/0x2bc0 mm/page_alloc.c:5221
alloc_slab_page mm/slub.c:3278 [inline]
allocate_slab mm/slub.c:3467 [inline]
new_slab+0xa6/0x6c0 mm/slub.c:3525
refill_objects+0x277/0x420 mm/slub.c:7272
refill_sheaf mm/slub.c:2816 [inline]
__pcs_replace_empty_main+0x375/0x650 mm/slub.c:4652
alloc_from_pcs mm/slub.c:4750 [inline]
slab_alloc_node mm/slub.c:4884 [inline]
__kmalloc_cache_noprof+0x493/0x6f0 mm/slub.c:5415
kmalloc_noprof include/linux/slab.h:950 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
snmp6_alloc_dev net/ipv6/addrconf.c:362 [inline]
ipv6_add_dev+0x670/0x1520 net/ipv6/addrconf.c:413
addrconf_notify+0x5db/0x1ba0 net/ipv6/addrconf.c:3662
notifier_call_chain+0x99/0x400 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x110 net/core/dev.c:2249
call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]
call_netdevice_notifiers net/core/dev.c:2301 [inline]
register_netdevice+0x18fe/0x24b0 net/core/dev.c:11461
virt_wifi_newlink+0x3ec/0x840 drivers/net/wireless/virtual/virt_wifi.c:572
rtnl_newlink_create net/core/rtnetlink.c:3864 [inline]
__rtnl_newlink net/core/rtnetlink.c:3995 [inline]
rtnl_newlink+0x1499/0x2380 net/core/rtnetlink.c:4110
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6997
netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2555
page last free pid 5350 tgid 5350 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0x794/0x10a0 mm/page_alloc.c:2938
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4570 [inline]
slab_alloc_node mm/slub.c:4899 [inline]
__kmalloc_cache_noprof+0x243/0x6f0 mm/slub.c:5415
kmalloc_noprof include/linux/slab.h:950 [inline]
tomoyo_print_header security/tomoyo/audit.c:156 [inline]
tomoyo_init_log+0x1a0/0x20c0 security/tomoyo/audit.c:253
tomoyo_supervisor+0x506/0x1340 security/tomoyo/common.c:2232
tomoyo_audit_path_log security/tomoyo/file.c:169 [inline]
tomoyo_path_permission security/tomoyo/file.c:592 [inline]
tomoyo_path_permission+0x270/0x3b0 security/tomoyo/file.c:577
tomoyo_check_open_permission+0x37f/0x3c0 security/tomoyo/file.c:782
tomoyo_file_open+0x6b/0x90 security/tomoyo/tomoyo.c:334
security_file_open+0xb5/0x1e0 security/security.c:2739
do_dentry_open+0x588/0x14d0 fs/open.c:924
vfs_open+0x82/0x3f0 fs/open.c:1079
do_open fs/namei.c:4699 [inline]
path_openat+0x208c/0x31a0 fs/namei.c:4858
do_file_open+0x20e/0x430 fs/namei.c:4887
do_sys_openat2+0x10d/0x1e0 fs/open.c:1364
Memory state around the buggy address:
ffff88803790df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff88803790e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88803790e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88803790e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803790e180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in __ethtool_get_link_ksettings+0x1b1/0x1c0 net/ethtool/ioctl.c:451
Read of size 8 at addr ffff88803790e2f0 by task kworker/0:3/5751
CPU: 0 UID: 0 PID: 5751 Comm: kworker/0:3 Tainted: G B L syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events smc_ib_port_event_work
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0x13d/0x4b0 mm/kasan/report.c:482
kasan_report+0xdf/0x1d0 mm/kasan/report.c:595
__ethtool_get_link_ksettings+0x1b1/0x1c0 net/ethtool/ioctl.c:451
__ethtool_get_link_ksettings+0x144/0x1c0 net/ethtool/ioctl.c:451
ib_get_eth_speed+0x13a/0xb40 drivers/infiniband/core/verbs.c:2055
rxe_query_port+0x12a/0x330 drivers/infiniband/sw/rxe/rxe_verbs.c:62
__ib_query_port drivers/infiniband/core/device.c:2121 [inline]
ib_query_port drivers/infiniband/core/device.c:2153 [inline]
ib_query_port+0x445/0x8b0 drivers/infiniband/core/device.c:2143
smc_ib_remember_port_attr net/smc/smc_ib.c:364 [inline]
smc_ib_port_event_work+0x14c/0xbd0 net/smc/smc_ib.c:388
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 5631:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5296 [inline]
__kvmalloc_node_noprof+0x360/0xa00 mm/slub.c:6833
alloc_netdev_mqs+0xd7/0x1560 net/core/dev.c:12029
rtnl_create_link+0xc13/0xf80 net/core/rtnetlink.c:3672
rtnl_newlink_create net/core/rtnetlink.c:3854 [inline]
__rtnl_newlink net/core/rtnetlink.c:3995 [inline]
rtnl_newlink+0x13bd/0x2380 net/core/rtnetlink.c:4110
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6997
netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2555
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1899
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
__sys_sendto+0x468/0x4b0 net/socket.c:2265
__do_sys_sendto net/socket.c:2272 [inline]
__se_sys_sendto net/socket.c:2268 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2268
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 6140:
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2689 [inline]
slab_free mm/slub.c:6251 [inline]
kfree+0x223/0x6c0 mm/slub.c:6566
device_release+0xd2/0x270 drivers/base/core.c:2566
kobject_cleanup lib/kobject.c:689 [inline]
kobject_release lib/kobject.c:720 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1f7/0x640 lib/kobject.c:737
netdev_run_todo+0x80f/0x12b0 net/core/dev.c:11730
default_device_exit_batch+0x92b/0xc10 net/core/dev.c:13077
ops_exit_list net/core/net_namespace.c:205 [inline]
ops_undo_list+0x363/0xab0 net/core/net_namespace.c:252
cleanup_net+0x499/0x920 net/core/net_namespace.c:702
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff88803790e000
which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 752 bytes inside of
freed 4096-byte region [ffff88803790e000, ffff88803790f000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x37908
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff8880263ac601
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813fe48500 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800040004 00000000f5000000 ffff8880263ac601
head: 00fff00000000040 ffff88813fe48500 dead000000000100 dead000000000122
head: 0000000000000000 0000000800040004 00000000f5000000 ffff8880263ac601
head: 00fff00000000003 fffffffffffffe01 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 5631, tgid 5631 (syz-executor), ts 96384368209, free_ts 59528166825
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1853
prep_new_page mm/page_alloc.c:1861 [inline]
get_page_from_freelist+0x11a6/0x3410 mm/page_alloc.c:3941
__alloc_frozen_pages_noprof+0x27c/0x2bc0 mm/page_alloc.c:5221
alloc_slab_page mm/slub.c:3278 [inline]
allocate_slab mm/slub.c:3467 [inline]
new_slab+0xa6/0x6c0 mm/slub.c:3525
refill_objects+0x277/0x420 mm/slub.c:7272
refill_sheaf mm/slub.c:2816 [inline]
__pcs_replace_empty_main+0x375/0x650 mm/slub.c:4652
alloc_from_pcs mm/slub.c:4750 [inline]
slab_alloc_node mm/slub.c:4884 [inline]
__kmalloc_cache_noprof+0x493/0x6f0 mm/slub.c:5415
kmalloc_noprof include/linux/slab.h:950 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
snmp6_alloc_dev net/ipv6/addrconf.c:362 [inline]
ipv6_add_dev+0x670/0x1520 net/ipv6/addrconf.c:413
addrconf_notify+0x5db/0x1ba0 net/ipv6/addrconf.c:3662
notifier_call_chain+0x99/0x400 kernel/notifier.c:85
call_netdevice_notifiers_info+0xbe/0x110 net/core/dev.c:2249
call_netdevice_notifiers_extack net/core/dev.c:2287 [inline]
call_netdevice_notifiers net/core/dev.c:2301 [inline]
register_netdevice+0x18fe/0x24b0 net/core/dev.c:11461
virt_wifi_newlink+0x3ec/0x840 drivers/net/wireless/virtual/virt_wifi.c:572
rtnl_newlink_create net/core/rtnetlink.c:3864 [inline]
__rtnl_newlink net/core/rtnetlink.c:3995 [inline]
rtnl_newlink+0x1499/0x2380 net/core/rtnetlink.c:4110
rtnetlink_rcv_msg+0x95e/0xe90 net/core/rtnetlink.c:6997
netlink_rcv_skb+0x159/0x420 net/netlink/af_netlink.c:2555
page last free pid 5350 tgid 5350 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1397 [inline]
__free_frozen_pages+0x794/0x10a0 mm/page_alloc.c:2938
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4570 [inline]
slab_alloc_node mm/slub.c:4899 [inline]
__kmalloc_cache_noprof+0x243/0x6f0 mm/slub.c:5415
kmalloc_noprof include/linux/slab.h:950 [inline]
tomoyo_print_header security/tomoyo/audit.c:156 [inline]
tomoyo_init_log+0x1a0/0x20c0 security/tomoyo/audit.c:253
tomoyo_supervisor+0x506/0x1340 security/tomoyo/common.c:2232
tomoyo_audit_path_log security/tomoyo/file.c:169 [inline]
tomoyo_path_permission security/tomoyo/file.c:592 [inline]
tomoyo_path_permission+0x270/0x3b0 security/tomoyo/file.c:577
tomoyo_check_open_permission+0x37f/0x3c0 security/tomoyo/file.c:782
tomoyo_file_open+0x6b/0x90 security/tomoyo/tomoyo.c:334
security_file_open+0xb5/0x1e0 security/security.c:2739
do_dentry_open+0x588/0x14d0 fs/open.c:924
vfs_open+0x82/0x3f0 fs/open.c:1079
do_open fs/namei.c:4699 [inline]
path_openat+0x208c/0x31a0 fs/namei.c:4858
do_file_open+0x20e/0x430 fs/namei.c:4887
do_sys_openat2+0x10d/0x1e0 fs/open.c:1364
Memory state around the buggy address:
ffff88803790e180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803790e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88803790e280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88803790e300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88803790e380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================