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 ffff8881ea3a1488 by task syz-executor.2/28627 CPU: 0 PID: 28627 Comm: syz-executor.2 Not tainted 5.4.100-syzkaller-00412-g7ba24942b70e #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:376 __kasan_report+0x182/0x250 mm/kasan/report.c:508 kasan_report+0x30/0x60 mm/kasan/common.c:641 __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+0xed9/0x13b0 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/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x465ef9 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:00007f7e2b4e9188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465ef9 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000006 RBP: 00000000004bcd1c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fff2ce8a77f R14: 00007f7e2b4e9300 R15: 0000000000022000 Allocated by task 21523: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] __kasan_kmalloc+0x137/0x1e0 mm/kasan/common.c:517 kmem_cache_alloc_trace+0x139/0x2b0 mm/slub.c:2848 kmalloc include/linux/slab.h:556 [inline] kzalloc include/linux/slab.h:690 [inline] nexthop_create net/ipv4/nexthop.c:1247 [inline] nexthop_add net/ipv4/nexthop.c:1311 [inline] rtm_new_nexthop+0x2076/0x6a30 net/ipv4/nexthop.c:1508 rtnetlink_rcv_msg+0xb74/0xd00 net/core/rtnetlink.c:5255 netlink_rcv_skb+0x200/0x480 net/netlink/af_netlink.c:2478 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/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 145: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] kasan_set_free_info mm/kasan/common.c:333 [inline] __kasan_slab_free+0x18a/0x240 mm/kasan/common.c:475 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 kernfs_fop_release+0x1d2/0x240 fs/kernfs/file.c:782 __fput+0x27d/0x6c0 fs/file_table.c:281 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The buggy address belongs to the object at ffff8881ea3a1400 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 136 bytes inside of 192-byte region [ffff8881ea3a1400, ffff8881ea3a14c0) The buggy address belongs to the page: page:ffffea0007a8e840 refcount:1 mapcount:0 mapping:ffff8881f5c02a00 index:0x0 flags: 0x8000000000000200(slab) raw: 8000000000000200 ffffea0007bc1800 0000000800000008 ffff8881f5c02a00 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881ea3a1380: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881ea3a1400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8881ea3a1480: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881ea3a1500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881ea3a1580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================