------------[ cut here ]------------ kernel BUG at lib/list_debug.c:23! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 17119 Comm: syz-executor.2 Not tainted 5.14.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid.cold+0xf/0x3c lib/list_debug.c:23 Code: 48 89 ef 48 c7 c6 60 b5 e3 89 e8 f6 a4 05 00 49 c7 c7 f4 ff ff ff e9 8a 50 e3 fa 4c 89 e1 48 c7 c7 e0 b9 e3 89 e8 d3 73 f2 ff <0f> 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 20 bb e3 89 e8 bc 73 f2 RSP: 0018:ffffc900013ff490 EFLAGS: 00010282 RAX: 0000000000000075 RBX: ffff88802d26f000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815d89a5 RDI: fffff5200027fe84 RBP: ffff88801d8bfec0 R08: 0000000000000075 R09: 0000000000000000 R10: ffffffff815d27de R11: 0000000000000000 R12: ffff888066ed8ac0 R13: ffff88802d26f008 R14: 0000000000001770 R15: ffff88801d8bfec0 FS: 00007fd889d76700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f17c905c718 CR3: 0000000030ec8000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __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:00007fd889d76188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0300000000000000 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffeb6cd100f R14: 00007fd889d76300 R15: 0000000000022000 Modules linked in: ---[ end trace 6264d854b98c634e ]--- RIP: 0010:__list_add_valid.cold+0xf/0x3c lib/list_debug.c:23 Code: 48 89 ef 48 c7 c6 60 b5 e3 89 e8 f6 a4 05 00 49 c7 c7 f4 ff ff ff e9 8a 50 e3 fa 4c 89 e1 48 c7 c7 e0 b9 e3 89 e8 d3 73 f2 ff <0f> 0b 48 89 f2 4c 89 e1 48 89 ee 48 c7 c7 20 bb e3 89 e8 bc 73 f2 RSP: 0018:ffffc900013ff490 EFLAGS: 00010282 RAX: 0000000000000075 RBX: ffff88802d26f000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815d89a5 RDI: fffff5200027fe84 RBP: ffff88801d8bfec0 R08: 0000000000000075 R09: 0000000000000000 R10: ffffffff815d27de R11: 0000000000000000 R12: ffff888066ed8ac0 R13: ffff88802d26f008 R14: 0000000000001770 R15: ffff88801d8bfec0 FS: 00007fd889d76700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff050251020 CR3: 0000000030ec8000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 89 ef mov %rbp,%rdi 3: 48 c7 c6 60 b5 e3 89 mov $0xffffffff89e3b560,%rsi a: e8 f6 a4 05 00 callq 0x5a505 f: 49 c7 c7 f4 ff ff ff mov $0xfffffffffffffff4,%r15 16: e9 8a 50 e3 fa jmpq 0xfae350a5 1b: 4c 89 e1 mov %r12,%rcx 1e: 48 c7 c7 e0 b9 e3 89 mov $0xffffffff89e3b9e0,%rdi 25: e8 d3 73 f2 ff callq 0xfff273fd 2a: 0f 0b ud2 <-- trapping instruction 2c: 48 89 f2 mov %rsi,%rdx 2f: 4c 89 e1 mov %r12,%rcx 32: 48 89 ee mov %rbp,%rsi 35: 48 c7 c7 20 bb e3 89 mov $0xffffffff89e3bb20,%rdi 3c: e8 .byte 0xe8 3d: bc .byte 0xbc 3e: 73 f2 jae 0x32