netlink: 13 bytes leftover after parsing attributes in process `syz-executor3'.
kasan: CONFIG_KASAN_INLINE enabled
kobject: 'loop4' (0000000081379b27): kobject_uevent_env
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 17470 Comm: syz-executor2 Not tainted 5.0.0-rc2+ #11
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
kobject: 'loop4' (0000000081379b27): fill_kobj_path: path = '/devices/virtual/block/loop4'
RIP: 0010:__x86_indirect_thunk_rax+0x10/0x20 arch/x86/lib/retpoline.S:32
Code: e9 63 aa d1 ff bb f2 ff ff ff 45 30 ff e9 09 af d1 ff 90 90 90 90 90 90 90 90 e8 07 00 00 00 f3 90 0f ae e8 eb f9 48 89 04 24 <c3> 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 e8 07 00 00 00 f3
RSP: 0018:ffff88807331f308 EFLAGS: 00010246
RAX: 000080fe00000000 RBX: ffff8880919246f4 RCX: ffffc9001333b000
RDX: 1ffff110123248e3 RSI: ffffffff86ca20f8 RDI: ffff888090b5adc0
RBP: ffff88807331f340 R08: ffff88808ca4c5c0 R09: 0000000000000003
kobject: 'loop3' (00000000ec374aa9): kobject_uevent_env
R10: ffffed1015cc5b8f R11: ffff8880ae62dc7b R12: ffff888090b5adc0
R13: 0000000000000000 R14: ffff888090b5ae18 R15: 0000000000000000
kobject: 'loop3' (00000000ec374aa9): fill_kobj_path: path = '/devices/virtual/block/loop3'
FS:  00007fc6d237c700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
netlink: 13 bytes leftover after parsing attributes in process `syz-executor3'.
CR2: 0000000000000000 CR3: 00000000a34ca000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ipv6_rcv+0x113/0x650 net/ipv6/ip6_input.c:272
------------[ cut here ]------------
downgrading a read lock
WARNING: CPU: 1 PID: 11776 at kernel/locking/lockdep.c:3553 __lock_downgrade kernel/locking/lockdep.c:3553 [inline]
WARNING: CPU: 1 PID: 11776 at kernel/locking/lockdep.c:3553 lock_downgrade+0x4d2/0x910 kernel/locking/lockdep.c:3816