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: slab-out-of-bounds in __list_add_valid+0x36/0xc0 lib/list_debug.c:23 Read of size 8 at addr ffff8881c9960388 by task syz-executor.2/9583 CPU: 1 PID: 9583 Comm: syz-executor.2 Not tainted 5.4.41-syzkaller-00234-gb818fc58f06b #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+0x14a/0x1ce lib/dump_stack.c:118 print_address_description+0x93/0x620 mm/kasan/report.c:374 __kasan_report+0x16d/0x1e0 mm/kasan/report.c:506 kasan_report+0x34/0x60 mm/kasan/common.c:634 __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+0x48d/0xb30 drivers/base/firmware_loader/fallback.c:654 _request_firmware+0xe82/0x1360 drivers/base/firmware_loader/main.c:783 request_firmware+0x33/0x50 drivers/base/firmware_loader/main.c:826 reg_reload_regdb+0xa6/0x220 net/wireless/reg.c:1083 genl_family_rcv_msg net/netlink/genetlink.c:629 [inline] genl_rcv_msg+0xeef/0x13c0 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+0x8ad/0xa50 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x9de/0xd80 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:638 [inline] sock_sendmsg net/socket.c:658 [inline] ____sys_sendmsg+0x58a/0x8d0 net/socket.c:2298 ___sys_sendmsg net/socket.c:2352 [inline] __sys_sendmsg+0x2d5/0x3c0 net/socket.c:2398 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6b5bdadc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004fed80 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000009 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000097d R14: 00000000004d5e80 R15: 00007f6b5bdae6d4 Allocated by task 7047: save_stack mm/kasan/common.c:69 [inline] set_track mm/kasan/common.c:77 [inline] __kasan_kmalloc+0x12c/0x1c0 mm/kasan/common.c:510 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slub.c:2766 [inline] slab_alloc mm/slub.c:2774 [inline] kmem_cache_alloc+0x1d5/0x260 mm/slub.c:2779 kmem_cache_zalloc include/linux/slab.h:680 [inline] locks_alloc_lock fs/locks.c:346 [inline] flock_make_lock fs/locks.c:487 [inline] __do_sys_flock fs/locks.c:2234 [inline] __se_sys_flock+0x149/0x530 fs/locks.c:2215 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 7047: save_stack mm/kasan/common.c:69 [inline] set_track mm/kasan/common.c:77 [inline] kasan_set_free_info mm/kasan/common.c:332 [inline] __kasan_slab_free+0x181/0x230 mm/kasan/common.c:471 slab_free_hook mm/slub.c:1424 [inline] slab_free_freelist_hook+0xd0/0x150 mm/slub.c:1457 slab_free mm/slub.c:3014 [inline] kmem_cache_free+0xac/0x600 mm/slub.c:3030 locks_free_lock fs/locks.c:383 [inline] __do_sys_flock fs/locks.c:2255 [inline] __se_sys_flock+0x447/0x530 fs/locks.c:2215 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The buggy address belongs to the object at ffff8881c9960270 which belongs to the cache file_lock_cache of size 248 The buggy address is located 32 bytes to the right of 248-byte region [ffff8881c9960270, ffff8881c9960368) The buggy address belongs to the page: page:ffffea0007265800 refcount:1 mapcount:0 mapping:ffff8881da8f4a00 index:0x0 flags: 0x8000000000000200(slab) raw: 8000000000000200 dead000000000100 dead000000000122 ffff8881da8f4a00 raw: 0000000000000000 00000000000d000d 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881c9960280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c9960300: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc >ffff8881c9960380: fc fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881c9960400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c9960480: fb fb fb fb fc fc fc fc fc fc fc fc fb fb fb fb ================================================================== list_add corruption. next->prev should be prev (ffffffff84cb6570), but was 0000000000000000. (next=ffff8881c9960380). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:25! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9583 Comm: syz-executor.2 Tainted: G B 5.4.41-syzkaller-00234-gb818fc58f06b #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: be ad 98 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 22 62 2f ff 0f 0b 48 c7 c7 09 ad 98 84 4c 89 e6 4c 89 f1 31 c0 e8 0c 62 2f ff <0f> 0b 48 c7 c7 6c ad 98 84 4c 89 f6 4c 89 e1 31 c0 e8 f6 61 2f ff RSP: 0018:ffff888183fef2c8 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff8881c9960388 RCX: f32afb4d829b4700 RDX: ffffc90003242000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff8881c9960380 R08: ffffffff812bdf2e R09: ffffed103b725df0 R10: ffffed103b725df0 R11: 0000000000000000 R12: ffffffff84cb6570 R13: dffffc0000000000 R14: ffff8881c9960380 R15: ffff8881c6397880 FS: 00007f6b5bdae700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa53e06e000 CR3: 0000000160b1a006 CR4: 00000000001606e0 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+0x48d/0xb30 drivers/base/firmware_loader/fallback.c:654 _request_firmware+0xe82/0x1360 drivers/base/firmware_loader/main.c:783 request_firmware+0x33/0x50 drivers/base/firmware_loader/main.c:826 reg_reload_regdb+0xa6/0x220 net/wireless/reg.c:1083 genl_family_rcv_msg net/netlink/genetlink.c:629 [inline] genl_rcv_msg+0xeef/0x13c0 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+0x8ad/0xa50 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x9de/0xd80 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:638 [inline] sock_sendmsg net/socket.c:658 [inline] ____sys_sendmsg+0x58a/0x8d0 net/socket.c:2298 ___sys_sendmsg net/socket.c:2352 [inline] __sys_sendmsg+0x2d5/0x3c0 net/socket.c:2398 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6b5bdadc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000004fed80 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000009 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000097d R14: 00000000004d5e80 R15: 00007f6b5bdae6d4 Modules linked in: ---[ end trace 2d4ac945726a2b15 ]--- RIP: 0010:__list_add_valid+0xa0/0xc0 lib/list_debug.c:23 Code: be ad 98 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 22 62 2f ff 0f 0b 48 c7 c7 09 ad 98 84 4c 89 e6 4c 89 f1 31 c0 e8 0c 62 2f ff <0f> 0b 48 c7 c7 6c ad 98 84 4c 89 f6 4c 89 e1 31 c0 e8 f6 61 2f ff RSP: 0018:ffff888183fef2c8 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff8881c9960388 RCX: f32afb4d829b4700 RDX: ffffc90003242000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff8881c9960380 R08: ffffffff812bdf2e R09: ffffed103b725df0 R10: ffffed103b725df0 R11: 0000000000000000 R12: ffffffff84cb6570 R13: dffffc0000000000 R14: ffff8881c9960380 R15: ffff8881c6397880 FS: 00007f6b5bdae700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa53e075000 CR3: 0000000160b1a002 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400