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+0x36/0xc0 lib/list_debug.c:23
Read of size 8 at addr ffff8881eea65088 by task syz-executor.3/4616

CPU: 0 PID: 4616 Comm: syz-executor.3 Not tainted 5.4.125-syzkaller-00029-g5970ec26e0c8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1d8/0x24e lib/dump_stack.c:118
 print_address_description+0x9b/0x650 mm/kasan/report.c:384
 __kasan_report+0x182/0x260 mm/kasan/report.c:516
 kasan_report+0x30/0x60 mm/kasan/common.c:653
 __list_add_valid+0x36/0xc0 lib/list_debug.c:23
 __list_add include/linux/list.h:60 [inline]
 list_add include/linux/list.h:79 [inline]
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:515 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:580 [inline]
 firmware_fallback_sysfs+0x480/0xb20 drivers/base/firmware_loader/fallback.c:654
 _request_firmware+0x1287/0x1770 drivers/base/firmware_loader/main.c:788
 request_firmware+0x33/0x50 drivers/base/firmware_loader/main.c:831
 reg_reload_regdb+0xa0/0x220 net/wireless/reg.c:1083
 genl_family_rcv_msg net/netlink/genetlink.c:629 [inline]
 genl_rcv_msg+0xed8/0x13b0 net/netlink/genetlink.c:654
 netlink_rcv_skb+0x200/0x480 net/netlink/af_netlink.c:2478
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:665
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x865/0x9f0 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x9ab/0xd40 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 ____sys_sendmsg+0x583/0x8c0 net/socket.c:2298
 ___sys_sendmsg net/socket.c:2352 [inline]
 __sys_sendmsg+0x2c4/0x3b0 net/socket.c:2398
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f41caa4fa39
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:00007f41c87c6188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f41cab52f60 RCX: 00007f41caa4fa39
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003
RBP: 00007f41caaa9c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffbabce39f R14: 00007f41c87c6300 R15: 0000000000022000

Allocated by task 4034:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 __kasan_kmalloc+0x137/0x1e0 mm/kasan/common.c:529
 __kmalloc+0x174/0x2f0 mm/slub.c:3903
 kmalloc_array include/linux/slab.h:618 [inline]
 kcalloc+0x2b/0x40 include/linux/slab.h:629
 ext4_find_extent+0x269/0xd50 fs/ext4/extents.c:897
 ext4_ext_map_blocks+0x257/0x45b0 fs/ext4/extents.c:4289
 ext4_map_blocks+0xa99/0x2030 fs/ext4/inode.c:659
 _ext4_get_block+0x21e/0x6b0 fs/ext4/inode.c:810
 ext4_get_block_trans+0x420/0x5a0 fs/ext4/inode.c:871
 get_more_blocks fs/direct-io.c:714 [inline]
 do_direct_IO fs/direct-io.c:1008 [inline]
 do_blockdev_direct_IO fs/direct-io.c:1340 [inline]
 __blockdev_direct_IO+0x1681/0x48d0 fs/direct-io.c:1426
 ext4_direct_IO_write fs/ext4/inode.c:3790 [inline]
 ext4_direct_IO+0x1010/0x2200 fs/ext4/inode.c:3952
 generic_file_direct_write+0x462/0x6d0 mm/filemap.c:3214
 __generic_file_write_iter+0x298/0x480 mm/filemap.c:3397
 ext4_file_write_iter+0x93c/0x10e0 fs/ext4/file.c:270
 do_iter_readv_writev+0x547/0x750 include/linux/fs.h:1970
 do_iter_write+0x16f/0x570 fs/read_write.c:970
 iter_file_splice_write+0x79a/0xf20 fs/splice.c:746
 splice_direct_to_actor+0x4b4/0xb30 fs/splice.c:976
 do_splice_direct+0x28b/0x3e0 fs/splice.c:1064
 do_sendfile+0x8e4/0x1140 fs/read_write.c:1464
 __do_sys_sendfile64 fs/read_write.c:1525 [inline]
 __se_sys_sendfile64 fs/read_write.c:1511 [inline]
 __x64_sys_sendfile64+0x1c4/0x220 fs/read_write.c:1511
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 4034:
 save_stack mm/kasan/common.c:70 [inline]
 set_track mm/kasan/common.c:78 [inline]
 kasan_set_free_info mm/kasan/common.c:345 [inline]
 __kasan_slab_free+0x18a/0x240 mm/kasan/common.c:487
 slab_free_hook mm/slub.c:1454 [inline]
 slab_free_freelist_hook+0x7b/0x150 mm/slub.c:1492
 slab_free mm/slub.c:3072 [inline]
 kfree+0xe0/0x660 mm/slub.c:4061
 ext4_ext_map_blocks+0x2bf9/0x45b0 fs/ext4/extents.c:4572
 ext4_map_blocks+0xa99/0x2030 fs/ext4/inode.c:659
 _ext4_get_block+0x21e/0x6b0 fs/ext4/inode.c:810
 ext4_get_block_trans+0x420/0x5a0 fs/ext4/inode.c:871
 get_more_blocks fs/direct-io.c:714 [inline]
 do_direct_IO fs/direct-io.c:1008 [inline]
 do_blockdev_direct_IO fs/direct-io.c:1340 [inline]
 __blockdev_direct_IO+0x1681/0x48d0 fs/direct-io.c:1426
 ext4_direct_IO_write fs/ext4/inode.c:3790 [inline]
 ext4_direct_IO+0x1010/0x2200 fs/ext4/inode.c:3952
 generic_file_direct_write+0x462/0x6d0 mm/filemap.c:3214
 __generic_file_write_iter+0x298/0x480 mm/filemap.c:3397
 ext4_file_write_iter+0x93c/0x10e0 fs/ext4/file.c:270
 do_iter_readv_writev+0x547/0x750 include/linux/fs.h:1970
 do_iter_write+0x16f/0x570 fs/read_write.c:970
 iter_file_splice_write+0x79a/0xf20 fs/splice.c:746
 splice_direct_to_actor+0x4b4/0xb30 fs/splice.c:976
 do_splice_direct+0x28b/0x3e0 fs/splice.c:1064
 do_sendfile+0x8e4/0x1140 fs/read_write.c:1464
 __do_sys_sendfile64 fs/read_write.c:1525 [inline]
 __se_sys_sendfile64 fs/read_write.c:1511 [inline]
 __x64_sys_sendfile64+0x1c4/0x220 fs/read_write.c:1511
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff8881eea65000
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 136 bytes inside of
 192-byte region [ffff8881eea65000, ffff8881eea650c0)
The buggy address belongs to the page:
page:ffffea0007ba9940 refcount:1 mapcount:0 mapping:ffff8881f5c02a00 index:0x0
flags: 0x8000000000000200(slab)
raw: 8000000000000200 ffffea0007768680 0000000200000002 ffff8881f5c02a00
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY)
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook mm/page_alloc.c:2165 [inline]
 prep_new_page+0x19a/0x380 mm/page_alloc.c:2171
 get_page_from_freelist+0x550/0x8b0 mm/page_alloc.c:3794
 __alloc_pages_nodemask+0x3a2/0x880 mm/page_alloc.c:4855
 alloc_slab_page+0x39/0x3e0 mm/slub.c:342
 allocate_slab mm/slub.c:1675 [inline]
 new_slab+0x97/0x460 mm/slub.c:1741
 new_slab_objects mm/slub.c:2498 [inline]
 ___slab_alloc+0x330/0x4c0 mm/slub.c:2659
 __slab_alloc mm/slub.c:2699 [inline]
 slab_alloc_node mm/slub.c:2784 [inline]
 slab_alloc mm/slub.c:2829 [inline]
 kmem_cache_alloc_trace+0x199/0x2b0 mm/slub.c:2846
 kmalloc include/linux/slab.h:556 [inline]
 kzalloc include/linux/slab.h:690 [inline]
 __allocate_fw_priv drivers/base/firmware_loader/main.c:174 [inline]
 alloc_lookup_fw_priv drivers/base/firmware_loader/main.c:229 [inline]
 _request_firmware_prepare drivers/base/firmware_loader/main.c:710 [inline]
 _request_firmware+0x524/0x1770 drivers/base/firmware_loader/main.c:771
 request_firmware_work_func+0x121/0x260 drivers/base/firmware_loader/main.c:978
 process_one_work+0x679/0x1030 kernel/workqueue.c:2277
 worker_thread+0xa6f/0x1400 kernel/workqueue.c:2423
 kthread+0x30f/0x330 kernel/kthread.c:268
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8881eea64f80: 00 03 fc fc 00 04 fc fc 00 02 fc fc 00 00 fc fc
 ffff8881eea65000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881eea65080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                      ^
 ffff8881eea65100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881eea65180: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
list_add corruption. next->prev should be prev (ffffffff861080a0), but was 0000000000000000. (next=ffff8881eea65080).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:25!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4616 Comm: syz-executor.3 Tainted: G    B             5.4.125-syzkaller-00029-g5970ec26e0c8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23
Code: e0 8d 03 85 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 42 7a 21 ff 0f 0b 48 c7 c7 a0 8c 03 85 4c 89 e6 4c 89 f1 31 c0 e8 2c 7a 21 ff <0f> 0b 48 c7 c7 60 8d 03 85 4c 89 f6 4c 89 e1 31 c0 e8 16 7a 21 ff
RSP: 0018:ffff8881e71672c8 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff8881eea65088 RCX: fe403835fbde2100
RDX: ffffc9000335d000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8881eea65080 R08: ffffffff814e90e7 R09: ffffed103edc9608
R10: ffffed103edc9608 R11: 0000000000000000 R12: ffffffff861080a0
R13: dffffc0000000000 R14: ffff8881eea65080 R15: ffff8881e7822f80
FS:  00007f41c87c6700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f428fb59018 CR3: 00000001ebf71000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_add include/linux/list.h:60 [inline]
 list_add include/linux/list.h:79 [inline]
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:515 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:580 [inline]
 firmware_fallback_sysfs+0x480/0xb20 drivers/base/firmware_loader/fallback.c:654
 _request_firmware+0x1287/0x1770 drivers/base/firmware_loader/main.c:788
 request_firmware+0x33/0x50 drivers/base/firmware_loader/main.c:831
 reg_reload_regdb+0xa0/0x220 net/wireless/reg.c:1083
 genl_family_rcv_msg net/netlink/genetlink.c:629 [inline]
 genl_rcv_msg+0xed8/0x13b0 net/netlink/genetlink.c:654
 netlink_rcv_skb+0x200/0x480 net/netlink/af_netlink.c:2478
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:665
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x865/0x9f0 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x9ab/0xd40 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:638 [inline]
 sock_sendmsg net/socket.c:658 [inline]
 ____sys_sendmsg+0x583/0x8c0 net/socket.c:2298
 ___sys_sendmsg net/socket.c:2352 [inline]
 __sys_sendmsg+0x2c4/0x3b0 net/socket.c:2398
 do_syscall_64+0xcb/0x1e0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f41caa4fa39
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:00007f41c87c6188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f41cab52f60 RCX: 00007f41caa4fa39
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003
RBP: 00007f41caaa9c5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffbabce39f R14: 00007f41c87c6300 R15: 0000000000022000
Modules linked in:
---[ end trace a2d1721a7909b55b ]---
RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23
Code: e0 8d 03 85 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 42 7a 21 ff 0f 0b 48 c7 c7 a0 8c 03 85 4c 89 e6 4c 89 f1 31 c0 e8 2c 7a 21 ff <0f> 0b 48 c7 c7 60 8d 03 85 4c 89 f6 4c 89 e1 31 c0 e8 16 7a 21 ff
RSP: 0018:ffff8881e71672c8 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff8881eea65088 RCX: fe403835fbde2100
RDX: ffffc9000335d000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8881eea65080 R08: ffffffff814e90e7 R09: ffffed103edc9608
R10: ffffed103edc9608 R11: 0000000000000000 R12: ffffffff861080a0
R13: dffffc0000000000 R14: ffff8881eea65080 R15: ffff8881e7822f80
FS:  00007f41c87c6700(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f485fc018 CR3: 00000001ebf71000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400