platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
platform regulatory.0: Falling back to sysfs fallback for: regulatory.db
==================================================================
BUG: KASAN: use-after-free in __list_add_valid+0x81/0xa0 lib/list_debug.c:23
Read of size 8 at addr ffff8880672cb8c8 by task syz-executor.0/27290
CPU: 1 PID: 27290 Comm: syz-executor.0 Not tainted 5.14.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105
print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:233
__kasan_report mm/kasan/report.c:419 [inline]
kasan_report.cold+0x83/0xdf mm/kasan/report.c:436
__list_add_valid+0x81/0xa0 lib/list_debug.c:23
__list_add include/linux/list.h:67 [inline]
list_add include/linux/list.h:86 [inline]
fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:516 [inline]
fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:581 [inline]
firmware_fallback_sysfs+0x455/0xe10 drivers/base/firmware_loader/fallback.c:657
_request_firmware+0xa80/0xe80 drivers/base/firmware_loader/main.c:833
request_firmware+0x32/0x50 drivers/base/firmware_loader/main.c:877
reg_reload_regdb+0x7a/0x240 net/wireless/reg.c:1095
genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739
genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504
genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340
netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929
sock_sendmsg_nosec net/socket.c:703 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:723
____sys_sendmsg+0x6e8/0x810 net/socket.c:2392
___sys_sendmsg+0xf3/0x170 net/socket.c:2446
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2475
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665e9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f34cbeb6188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffe9768faef R14: 00007f34cbeb6300 R15: 0000000000022000
Allocated by task 9684:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0x9b/0xd0 mm/kasan/common.c:522
kmalloc_array include/linux/slab.h:631 [inline]
ovs_flow_masks_rebalance+0xe6/0x980 net/openvswitch/flow_table.c:1116
ovs_dp_masks_rebalance+0x60/0xf0 net/openvswitch/datapath.c:2389
process_one_work+0x98d/0x1630 kernel/workqueue.c:2276
worker_thread+0x658/0x11f0 kernel/workqueue.c:2422
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Last potentially related work creation:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_record_aux_stack+0xe5/0x110 mm/kasan/generic.c:348
__call_rcu kernel/rcu/tree.c:3029 [inline]
call_rcu+0xb1/0x750 kernel/rcu/tree.c:3109
fib6_info_release include/net/ip6_fib.h:337 [inline]
fib6_info_release include/net/ip6_fib.h:334 [inline]
__ip6_del_rt net/ipv6/route.c:3883 [inline]
ip6_del_rt+0x1be/0x200 net/ipv6/route.c:3894
__ipv6_ifa_notify+0x4f3/0xa90 net/ipv6/addrconf.c:6110
addrconf_ifdown.isra.0+0xa4b/0x15b0 net/ipv6/addrconf.c:3820
addrconf_notify+0x606/0x2400 net/ipv6/addrconf.c:3631
notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2123
call_netdevice_notifiers_mtu net/core/dev.c:2172 [inline]
dev_set_mtu_ext+0x397/0x5a0 net/core/dev.c:8964
dev_set_mtu+0x8e/0x120 net/core/dev.c:8985
dev_ifsioc+0x49f/0xa60 net/core/dev_ioctl.c:261
dev_ioctl+0x1ad/0xb70 net/core/dev_ioctl.c:505
sock_do_ioctl+0x148/0x2d0 net/socket.c:1117
sock_ioctl+0x477/0x6a0 net/socket.c:1221
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:1069 [inline]
__se_sys_ioctl fs/ioctl.c:1055 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
Second to last potentially related work creation:
kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
kasan_record_aux_stack+0xe5/0x110 mm/kasan/generic.c:348
kvfree_call_rcu+0x74/0x990 kernel/rcu/tree.c:3594
drop_sysctl_table+0x3c0/0x4e0 fs/proc/proc_sysctl.c:1647
unregister_sysctl_table fs/proc/proc_sysctl.c:1685 [inline]
unregister_sysctl_table+0xc2/0x190 fs/proc/proc_sysctl.c:1660
neigh_sysctl_unregister+0x5b/0x80 net/core/neighbour.c:3719
addrconf_ifdown.isra.0+0xf8f/0x15b0 net/ipv6/addrconf.c:3849
addrconf_notify+0x606/0x2400 net/ipv6/addrconf.c:3631
notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2123
call_netdevice_notifiers_extack net/core/dev.c:2135 [inline]
call_netdevice_notifiers net/core/dev.c:2149 [inline]
unregister_netdevice_many+0x951/0x1790 net/core/dev.c:11093
unregister_netdevice_queue+0x2dd/0x3c0 net/core/dev.c:11027
unregister_netdevice include/linux/netdevice.h:2969 [inline]
__tun_detach+0x10ad/0x13d0 drivers/net/tun.c:670
tun_detach drivers/net/tun.c:687 [inline]
tun_chr_close+0xc4/0x180 drivers/net/tun.c:3397
__fput+0x288/0x920 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
get_signal+0x1b35/0x2160 kernel/signal.c:2581
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:209
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
The buggy address belongs to the object at ffff8880672cb800
which belongs to the cache kmalloc-256 of size 256
The buggy address is located 200 bytes inside of
256-byte region [ffff8880672cb800, ffff8880672cb900)
The buggy address belongs to the page:
page:ffffea00019cb280 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880672cb800 pfn:0x672ca
head:ffffea00019cb280 order:1 compound_mapcount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea00004c7588 ffffea0000859508 ffff888010841b40
raw: ffff8880672cb800 000000000010000f 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4888, ts 126563775429, free_ts 122263783782
prep_new_page mm/page_alloc.c:2436 [inline]
get_page_from_freelist+0xa72/0x2f80 mm/page_alloc.c:4169
__alloc_pages+0x1b2/0x500 mm/page_alloc.c:5391
alloc_pages+0x18c/0x2a0 mm/mempolicy.c:2244
alloc_slab_page mm/slub.c:1688 [inline]
allocate_slab+0x32e/0x4b0 mm/slub.c:1828
new_slab mm/slub.c:1891 [inline]
new_slab_objects mm/slub.c:2637 [inline]
___slab_alloc+0x4ba/0x820 mm/slub.c:2800
__slab_alloc.constprop.0+0xa7/0xf0 mm/slub.c:2840
slab_alloc_node mm/slub.c:2922 [inline]
slab_alloc mm/slub.c:2964 [inline]
kmem_cache_alloc_trace+0x30f/0x3c0 mm/slub.c:2981
kmalloc include/linux/slab.h:591 [inline]
kzalloc include/linux/slab.h:721 [inline]
fib6_info_alloc+0xc1/0x210 net/ipv6/ip6_fib.c:155
ip6_route_info_create+0x33e/0x1aa0 net/ipv6/route.c:3762
ip6_route_add+0x24/0x150 net/ipv6/route.c:3856
addrconf_add_mroute+0x1e1/0x310 net/ipv6/addrconf.c:2479
addrconf_add_dev+0x162/0x1d0 net/ipv6/addrconf.c:2497
addrconf_dev_config+0x1ea/0x420 net/ipv6/addrconf.c:3351
addrconf_notify+0x366/0x2400 net/ipv6/addrconf.c:3593
notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2123
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1346 [inline]
free_pcp_prepare+0x2c5/0x780 mm/page_alloc.c:1397
free_unref_page_prepare mm/page_alloc.c:3332 [inline]
free_unref_page+0x19/0x690 mm/page_alloc.c:3411
kasan_depopulate_vmalloc_pte+0x5c/0x70 mm/kasan/shadow.c:375
apply_to_pte_range mm/memory.c:2532 [inline]
apply_to_pmd_range mm/memory.c:2576 [inline]
apply_to_pud_range mm/memory.c:2612 [inline]
apply_to_p4d_range mm/memory.c:2648 [inline]
__apply_to_page_range+0x694/0x1080 mm/memory.c:2682
kasan_release_vmalloc+0xa7/0xc0 mm/kasan/shadow.c:485
__purge_vmap_area_lazy+0x8f9/0x1c50 mm/vmalloc.c:1670
_vm_unmap_aliases.part.0+0x3f0/0x500 mm/vmalloc.c:2073
_vm_unmap_aliases mm/vmalloc.c:2047 [inline]
vm_unmap_aliases+0x47/0x50 mm/vmalloc.c:2096
change_page_attr_set_clr+0x241/0x500 arch/x86/mm/pat/set_memory.c:1740
change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline]
set_memory_x+0xb2/0x110 arch/x86/mm/pat/set_memory.c:1930
bpf_jit_binary_lock_ro include/linux/filter.h:867 [inline]
bpf_int_jit_compile+0xe66/0x11e0 arch/x86/net/bpf_jit_comp.c:2319
bpf_prog_select_runtime+0x464/0x6a0 kernel/bpf/core.c:1914
bpf_migrate_filter+0x2dc/0x380 net/core/filter.c:1294
bpf_prepare_filter net/core/filter.c:1342 [inline]
__get_filter+0x357/0x4e0 net/core/filter.c:1511
sk_attach_filter+0x1c/0x170 net/core/filter.c:1526
sock_setsockopt+0x1d5e/0x24b0 net/core/sock.c:1163
Memory state around the buggy address:
ffff8880672cb780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880672cb800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880672cb880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880672cb900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880672cb980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
----------------
Code disassembly (best guess), 1 bytes skipped:
0: ff c3 inc %ebx
2: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
9: 00 00 00
c: 0f 1f 40 00 nopl 0x0(%rax)
10: 48 89 f8 mov %rdi,%rax
13: 48 89 f7 mov %rsi,%rdi
16: 48 89 d6 mov %rdx,%rsi
19: 48 89 ca mov %rcx,%rdx
1c: 4d 89 c2 mov %r8,%r10
1f: 4d 89 c8 mov %r9,%r8
22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
27: 0f 05 syscall
29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
2f: 73 01 jae 0x32
31: c3 retq
32: 48 c7 c1 bc ff ff ff mov $0xffffffffffffffbc,%rcx
39: f7 d8 neg %eax
3b: 64 89 01 mov %eax,%fs:(%rcx)
3e: 48 rex.W