netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 PID: 9834 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #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+0x1fc/0x2ef lib/dump_stack.c:118 assign_lock_key kernel/locking/lockdep.c:728 [inline] register_lock_class+0xe82/0x11c0 kernel/locking/lockdep.c:754 __lock_acquire+0x17d/0x3ff0 kernel/locking/lockdep.c:3304 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 ieee802154_add_llsec_key+0x44/0x80 net/mac802154/cfg.c:343 rdev_add_llsec_key net/ieee802154/rdev-ops.h:260 [inline] nl802154_add_llsec_key+0x3e1/0x570 net/ieee802154/nl802154.c:1619 genl_family_rcv_msg+0x642/0xc40 net/netlink/genetlink.c:602 genl_rcv_msg+0xbf/0x160 net/netlink/genetlink.c:627 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fdc0059cae9 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:00007fdbfdb12188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fdc006aff60 RCX: 00007fdc0059cae9 RDX: 0000000000000000 RSI: 00000000200005c0 RDI: 0000000000000005 RBP: 00007fdc005f6f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff07ab52ff R14: 00007fdbfdb12300 R15: 0000000000022000 9pnet_virtio: no channels available for device 127.0.0.1 9pnet_virtio: no channels available for device 127.0.0.1 overlayfs: './file0' not a directory EXT4-fs (loop5): VFS: Can't find ext4 filesystem kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access MTD: Attempt to mount non-MTD device "/dev/loop3" cramfs: wrong magic general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9834 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:llsec_key_id_equal+0x24/0x430 net/mac802154/llsec.c:199 Code: 5c c3 0f 1f 40 00 41 56 41 55 41 54 55 48 89 f5 53 48 89 fb e8 9d 0c 97 f9 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e aa 02 00 00 48 89 ea 44 0f b6 23 48 RSP: 0018:ffff8881dd4cf430 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffc9000a080000 RDX: 0000000000000002 RSI: ffffffff87cb78d3 RDI: 0000000000000010 RBP: ffff8881dd4cf598 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c66501b R12: ffff8881dd4cf598 R13: ffff8881dd4cf5d8 R14: ffff88804f872aa0 R15: dffffc0000000000 FS: 00007fdbfdb12700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8fd7437000 CR3: 00000001d9c01000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mac802154_llsec_key_add+0x147/0xb60 net/mac802154/llsec.c:232 ieee802154_add_llsec_key+0x56/0x80 net/mac802154/cfg.c:344 rdev_add_llsec_key net/ieee802154/rdev-ops.h:260 [inline] nl802154_add_llsec_key+0x3e1/0x570 net/ieee802154/nl802154.c:1619 genl_family_rcv_msg+0x642/0xc40 net/netlink/genetlink.c:602 genl_rcv_msg+0xbf/0x160 net/netlink/genetlink.c:627 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351 netlink_sendmsg+0x6c3/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2227 __sys_sendmsg net/socket.c:2265 [inline] __do_sys_sendmsg net/socket.c:2274 [inline] __se_sys_sendmsg net/socket.c:2272 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2272 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fdc0059cae9 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:00007fdbfdb12188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fdc006aff60 RCX: 00007fdc0059cae9 RDX: 0000000000000000 RSI: 00000000200005c0 RDI: 0000000000000005 RBP: 00007fdc005f6f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff07ab52ff R14: 00007fdbfdb12300 R15: 0000000000022000 Modules linked in: ---[ end trace 117ff20543a620b0 ]--- RIP: 0010:llsec_key_id_equal+0x24/0x430 net/mac802154/llsec.c:199 Code: 5c c3 0f 1f 40 00 41 56 41 55 41 54 55 48 89 f5 53 48 89 fb e8 9d 0c 97 f9 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e aa 02 00 00 48 89 ea 44 0f b6 23 48 overlayfs: unrecognized mount option "wMrkdirš /file1" or missing value RSP: 0018:ffff8881dd4cf430 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffc9000a080000 RDX: 0000000000000002 RSI: ffffffff87cb78d3 RDI: 0000000000000010 RBP: ffff8881dd4cf598 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c66501b R12: ffff8881dd4cf598 R13: ffff8881dd4cf5d8 R14: ffff88804f872aa0 R15: dffffc0000000000 FS: 00007fdbfdb12700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fab438bb710 CR3: 00000001d9c01000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 MTD: Attempt to mount non-MTD device "/dev/loop3" ---------------- Code disassembly (best guess): 0: 5c pop %rsp 1: c3 retq 2: 0f 1f 40 00 nopl 0x0(%rax) 6: 41 56 push %r14 8: 41 55 push %r13 a: 41 54 push %r12 c: 55 push %rbp d: 48 89 f5 mov %rsi,%rbp 10: 53 push %rbx 11: 48 89 fb mov %rdi,%rbx 14: e8 9d 0c 97 f9 callq 0xf9970cb6 19: 48 89 da mov %rbx,%rdx 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 06 je 0x38 32: 0f 8e aa 02 00 00 jle 0x2e2 38: 48 89 ea mov %rbp,%rdx 3b: 44 0f b6 23 movzbl (%rbx),%r12d 3f: 48 rex.W