==================================================================
BUG: KASAN: slab-use-after-free in tasklet_action_common+0x318/0x3d0 kernel/softirq.c:954
Read of size 8 at addr ffff8880529a7158 by task kworker/1:4/5755
CPU: 1 UID: 0 PID: 5755 Comm: kworker/1:4 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Workqueue: events request_firmware_work_func
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/0x1c0 mm/kasan/report.c:595
tasklet_action_common+0x318/0x3d0 kernel/softirq.c:954
handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0x16a/0x210 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:get_entry mm/page_ext.c:158 [inline]
RIP: 0010:lookup_page_ext+0xc8/0x100 mm/page_ext.c:262
Code: ff 4d 85 e4 74 17 31 ed e8 05 46 81 ff 48 89 e8 48 83 c4 08 5b 5d 41 5c e9 90 60 85 fe e8 f0 45 81 ff 48 0f af 1d 58 2b 13 19 <48> 01 dd eb d9 e8 de 45 81 ff 90 0f 0b 90 eb a7 48 c7 c7 70 5f 65
RSP: 0018:ffffc9000420f870 EFLAGS: 00000292
RAX: 0000000000000000 RBX: 0000000001987c30 RCX: 0000000000000000
RDX: ffff888053695dc0 RSI: ffffffff828ae080 RDI: ffff888053695dc0
RBP: ffff88801d300000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 000000453994dbe1 R14: 0000000000000000 R15: ffffea000146c9c0
page_ext_get+0x58/0x1a0 mm/page_ext.c:523
__reset_page_owner+0x2b/0x190 mm/page_owner.c:324
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
free_pages_prepare+0x586/0xe00 mm/page_alloc.c:1463
__free_contig_range_common+0x14f/0x250 mm/page_alloc.c:7072
__free_contig_range mm/page_alloc.c:7117 [inline]
free_pages_bulk+0xbd/0x200 mm/page_alloc.c:5322
vm_area_free_pages+0xb2/0x2a0 mm/vmalloc.c:3461
vfree mm/vmalloc.c:3510 [inline]
vfree+0xf7/0x6d0 mm/vmalloc.c:3484
__free_fw_priv drivers/base/firmware_loader/main.c:219 [inline]
kref_put include/linux/kref.h:65 [inline]
free_fw_priv+0x3f1/0x4e0 drivers/base/firmware_loader/main.c:229
firmware_free_data drivers/base/firmware_loader/main.c:604 [inline]
release_firmware drivers/base/firmware_loader/main.c:1126 [inline]
release_firmware+0x7f/0xc0 drivers/base/firmware_loader/main.c:1122
ath9k_hif_usb_firmware_cb+0x327/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1276
request_firmware_work_func+0x13f/0x440 drivers/base/firmware_loader/main.c:1164
process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
process_scheduled_works kernel/workqueue.c:3479 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 5755:
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:409 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:426
kasan_kmalloc include/linux/kasan.h:263 [inline]
__kmalloc_cache_noprof+0x2f8/0x6d0 mm/slub.c:5563
_kmalloc_noprof include/linux/slab.h:991 [inline]
_kzalloc_noprof include/linux/slab.h:1312 [inline]
ath9k_init_wmi+0x43/0x300 drivers/net/wireless/ath/ath9k/wmi.c:95
ath9k_htc_probe_device+0x203/0x1f80 drivers/net/wireless/ath/ath9k/htc_drv_init.c:956
ath9k_htc_hw_init+0x33/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:532
ath9k_hif_usb_firmware_cb+0x25c/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1255
request_firmware_work_func+0x13f/0x440 drivers/base/firmware_loader/main.c:1164
process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
process_scheduled_works kernel/workqueue.c:3479 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 5755:
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:264 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:296
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2748 [inline]
slab_free mm/slub.c:6508 [inline]
kfree+0x22b/0x6d0 mm/slub.c:6801
ath9k_htc_probe_device+0x293/0x1f80 drivers/net/wireless/ath/ath9k/htc_drv_init.c:978
ath9k_htc_hw_init+0x33/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:532
ath9k_hif_usb_firmware_cb+0x25c/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1255
request_firmware_work_func+0x13f/0x440 drivers/base/firmware_loader/main.c:1164
process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
process_scheduled_works kernel/workqueue.c:3479 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 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 ffff8880529a7000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 344 bytes inside of
freed 2048-byte region [ffff8880529a7000, ffff8880529a7800)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880529a2000 pfn:0x529a0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801c034000 ffffea0000cf7010 ffffea00014efa10
raw: ffff8880529a2000 0000000000080006 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801c034000 ffffea0000cf7010 ffffea00014efa10
head: ffff8880529a2000 0000000000080006 00000000f5000000 0000000000000000
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 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5618, tgid 5618 (syz-executor), ts 97799730947
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x110d/0x35d0 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x2eb/0x3300 mm/page_alloc.c:5436
alloc_slab_page mm/slub.c:3347 [inline]
allocate_slab mm/slub.c:3462 [inline]
new_slab+0xa9/0x6e0 mm/slub.c:3513
refill_objects+0xe3/0x410 mm/slub.c:7417
refill_sheaf mm/slub.c:2885 [inline]
__pcs_replace_empty_main+0x35e/0x650 mm/slub.c:4774
alloc_from_pcs mm/slub.c:4850 [inline]
slab_alloc_node mm/slub.c:4984 [inline]
__do_kmalloc_node mm/slub.c:5413 [inline]
__kmalloc_node_track_caller_noprof+0x6a8/0x870 mm/slub.c:5545
kmalloc_reserve+0xe8/0x350 net/core/skbuff.c:637
pskb_expand_head+0x249/0x10e0 net/core/skbuff.c:2315
netlink_trim+0x22d/0x2f0 net/netlink/af_netlink.c:1319
netlink_broadcast_filtered+0x6d/0xf20 net/netlink/af_netlink.c:1537
nlmsg_multicast_filtered include/net/netlink.h:1165 [inline]
nlmsg_multicast include/net/netlink.h:1184 [inline]
nlmsg_notify+0xb1/0x290 net/netlink/af_netlink.c:2618
rtnl_notify net/core/rtnetlink.c:994 [inline]
rtmsg_ifinfo_send net/core/rtnetlink.c:4614 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4630 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4617 [inline]
rtmsg_ifinfo+0x177/0x1b0 net/core/rtnetlink.c:4636
__dev_notify_flags+0x362/0x4b0 net/core/dev.c:9892
netif_change_flags+0x108/0x160 net/core/dev.c:9925
do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3271
page last free pid 1 tgid 1 ts 21563218501 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
free_pages_prepare+0x586/0xe00 mm/page_alloc.c:1463
__free_contig_range_common+0x14f/0x250 mm/page_alloc.c:7072
debug_vm_pgtable_free_huge_page mm/debug_vm_pgtable.c:980 [inline]
destroy_args+0xa8/0x7a0 mm/debug_vm_pgtable.c:993
debug_vm_pgtable+0x1d69/0x3490 mm/debug_vm_pgtable.c:1368
do_one_initcall+0x11c/0x6f0 init/main.c:1362
do_initcall_level init/main.c:1424 [inline]
do_initcalls init/main.c:1440 [inline]
do_basic_setup init/main.c:1460 [inline]
kernel_init_freeable+0x6ea/0x7b0 init/main.c:1675
kernel_init+0x21/0x1e0 init/main.c:1565
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Memory state around the buggy address:
ffff8880529a7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880529a7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880529a7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880529a7180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880529a7200: 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_write include/linux/instrumented.h:112 [inline]
BUG: KASAN: slab-use-after-free in test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline]
BUG: KASAN: slab-use-after-free in tasklet_trylock include/linux/interrupt.h:742 [inline]
BUG: KASAN: slab-use-after-free in tasklet_action_common+0x11e/0x3d0 kernel/softirq.c:956
Write of size 8 at addr ffff8880529a7160 by task kworker/1:4/5755
CPU: 1 UID: 0 PID: 5755 Comm: kworker/1:4 Tainted: G B syzkaller #0 PREEMPT(full)
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Workqueue: events request_firmware_work_func
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/0x1c0 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_write include/linux/instrumented.h:112 [inline]
test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline]
tasklet_trylock include/linux/interrupt.h:742 [inline]
tasklet_action_common+0x11e/0x3d0 kernel/softirq.c:956
handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0x16a/0x210 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:get_entry mm/page_ext.c:158 [inline]
RIP: 0010:lookup_page_ext+0xc8/0x100 mm/page_ext.c:262
Code: ff 4d 85 e4 74 17 31 ed e8 05 46 81 ff 48 89 e8 48 83 c4 08 5b 5d 41 5c e9 90 60 85 fe e8 f0 45 81 ff 48 0f af 1d 58 2b 13 19 <48> 01 dd eb d9 e8 de 45 81 ff 90 0f 0b 90 eb a7 48 c7 c7 70 5f 65
RSP: 0018:ffffc9000420f870 EFLAGS: 00000292
RAX: 0000000000000000 RBX: 0000000001987c30 RCX: 0000000000000000
RDX: ffff888053695dc0 RSI: ffffffff828ae080 RDI: ffff888053695dc0
RBP: ffff88801d300000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 000000453994dbe1 R14: 0000000000000000 R15: ffffea000146c9c0
page_ext_get+0x58/0x1a0 mm/page_ext.c:523
__reset_page_owner+0x2b/0x190 mm/page_owner.c:324
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
free_pages_prepare+0x586/0xe00 mm/page_alloc.c:1463
__free_contig_range_common+0x14f/0x250 mm/page_alloc.c:7072
__free_contig_range mm/page_alloc.c:7117 [inline]
free_pages_bulk+0xbd/0x200 mm/page_alloc.c:5322
vm_area_free_pages+0xb2/0x2a0 mm/vmalloc.c:3461
vfree mm/vmalloc.c:3510 [inline]
vfree+0xf7/0x6d0 mm/vmalloc.c:3484
__free_fw_priv drivers/base/firmware_loader/main.c:219 [inline]
kref_put include/linux/kref.h:65 [inline]
free_fw_priv+0x3f1/0x4e0 drivers/base/firmware_loader/main.c:229
firmware_free_data drivers/base/firmware_loader/main.c:604 [inline]
release_firmware drivers/base/firmware_loader/main.c:1126 [inline]
release_firmware+0x7f/0xc0 drivers/base/firmware_loader/main.c:1122
ath9k_hif_usb_firmware_cb+0x327/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1276
request_firmware_work_func+0x13f/0x440 drivers/base/firmware_loader/main.c:1164
process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
process_scheduled_works kernel/workqueue.c:3479 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 5755:
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:409 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:426
kasan_kmalloc include/linux/kasan.h:263 [inline]
__kmalloc_cache_noprof+0x2f8/0x6d0 mm/slub.c:5563
_kmalloc_noprof include/linux/slab.h:991 [inline]
_kzalloc_noprof include/linux/slab.h:1312 [inline]
ath9k_init_wmi+0x43/0x300 drivers/net/wireless/ath/ath9k/wmi.c:95
ath9k_htc_probe_device+0x203/0x1f80 drivers/net/wireless/ath/ath9k/htc_drv_init.c:956
ath9k_htc_hw_init+0x33/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:532
ath9k_hif_usb_firmware_cb+0x25c/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1255
request_firmware_work_func+0x13f/0x440 drivers/base/firmware_loader/main.c:1164
process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
process_scheduled_works kernel/workqueue.c:3479 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 5755:
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:264 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:296
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2748 [inline]
slab_free mm/slub.c:6508 [inline]
kfree+0x22b/0x6d0 mm/slub.c:6801
ath9k_htc_probe_device+0x293/0x1f80 drivers/net/wireless/ath/ath9k/htc_drv_init.c:978
ath9k_htc_hw_init+0x33/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:532
ath9k_hif_usb_firmware_cb+0x25c/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1255
request_firmware_work_func+0x13f/0x440 drivers/base/firmware_loader/main.c:1164
process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
process_scheduled_works kernel/workqueue.c:3479 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 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 ffff8880529a7000
which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 352 bytes inside of
freed 2048-byte region [ffff8880529a7000, ffff8880529a7800)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880529a2000 pfn:0x529a0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801c034000 ffffea0000cf7010 ffffea00014efa10
raw: ffff8880529a2000 0000000000080006 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88801c034000 ffffea0000cf7010 ffffea00014efa10
head: ffff8880529a2000 0000000000080006 00000000f5000000 0000000000000000
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 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5618, tgid 5618 (syz-executor), ts 97799730947
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1871
prep_new_page mm/page_alloc.c:1879 [inline]
get_page_from_freelist+0x110d/0x35d0 mm/page_alloc.c:3943
__alloc_frozen_pages_noprof+0x2eb/0x3300 mm/page_alloc.c:5436
alloc_slab_page mm/slub.c:3347 [inline]
allocate_slab mm/slub.c:3462 [inline]
new_slab+0xa9/0x6e0 mm/slub.c:3513
refill_objects+0xe3/0x410 mm/slub.c:7417
refill_sheaf mm/slub.c:2885 [inline]
__pcs_replace_empty_main+0x35e/0x650 mm/slub.c:4774
alloc_from_pcs mm/slub.c:4850 [inline]
slab_alloc_node mm/slub.c:4984 [inline]
__do_kmalloc_node mm/slub.c:5413 [inline]
__kmalloc_node_track_caller_noprof+0x6a8/0x870 mm/slub.c:5545
kmalloc_reserve+0xe8/0x350 net/core/skbuff.c:637
pskb_expand_head+0x249/0x10e0 net/core/skbuff.c:2315
netlink_trim+0x22d/0x2f0 net/netlink/af_netlink.c:1319
netlink_broadcast_filtered+0x6d/0xf20 net/netlink/af_netlink.c:1537
nlmsg_multicast_filtered include/net/netlink.h:1165 [inline]
nlmsg_multicast include/net/netlink.h:1184 [inline]
nlmsg_notify+0xb1/0x290 net/netlink/af_netlink.c:2618
rtnl_notify net/core/rtnetlink.c:994 [inline]
rtmsg_ifinfo_send net/core/rtnetlink.c:4614 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4630 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4617 [inline]
rtmsg_ifinfo+0x177/0x1b0 net/core/rtnetlink.c:4636
__dev_notify_flags+0x362/0x4b0 net/core/dev.c:9892
netif_change_flags+0x108/0x160 net/core/dev.c:9925
do_setlink.isra.0+0x1ac4/0x3e60 net/core/rtnetlink.c:3271
page last free pid 1 tgid 1 ts 21563218501 stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
free_pages_prepare+0x586/0xe00 mm/page_alloc.c:1463
__free_contig_range_common+0x14f/0x250 mm/page_alloc.c:7072
debug_vm_pgtable_free_huge_page mm/debug_vm_pgtable.c:980 [inline]
destroy_args+0xa8/0x7a0 mm/debug_vm_pgtable.c:993
debug_vm_pgtable+0x1d69/0x3490 mm/debug_vm_pgtable.c:1368
do_one_initcall+0x11c/0x6f0 init/main.c:1362
do_initcall_level init/main.c:1424 [inline]
do_initcalls init/main.c:1440 [inline]
do_basic_setup init/main.c:1460 [inline]
kernel_init_freeable+0x6ea/0x7b0 init/main.c:1675
kernel_init+0x21/0x1e0 init/main.c:1565
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Memory state around the buggy address:
ffff8880529a7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880529a7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880529a7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880529a7180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880529a7200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 4d 85 e4 test %r12,%r12
3: 74 17 je 0x1c
5: 31 ed xor %ebp,%ebp
7: e8 05 46 81 ff call 0xff814611
c: 48 89 e8 mov %rbp,%rax
f: 48 83 c4 08 add $0x8,%rsp
13: 5b pop %rbx
14: 5d pop %rbp
15: 41 5c pop %r12
17: e9 90 60 85 fe jmp 0xfe8560ac
1c: e8 f0 45 81 ff call 0xff814611
21: 48 0f af 1d 58 2b 13 imul 0x19132b58(%rip),%rbx # 0x19132b81
28: 19
* 29: 48 01 dd add %rbx,%rbp <-- trapping instruction
2c: eb d9 jmp 0x7
2e: e8 de 45 81 ff call 0xff814611
33: 90 nop
34: 0f 0b ud2
36: 90 nop
37: eb a7 jmp 0xffffffe0
39: 48 rex.W
3a: c7 .byte 0xc7
3b: c7 (bad)
3c: 70 5f jo 0x9d
3e: 65 gs