==================================================================
BUG: KASAN: slab-out-of-bounds in check_prev_add kernel/locking/lockdep.c:2298 [inline]
BUG: KASAN: slab-out-of-bounds in check_prevs_add kernel/locking/lockdep.c:2418 [inline]
BUG: KASAN: slab-out-of-bounds in validate_chain+0x1a35/0x84f0 kernel/locking/lockdep.c:2800
Write of size 8 at addr ffff88809afd27b0 by task syz-executor.2/9485

CPU: 0 PID: 9485 Comm: syz-executor.2 Not tainted 5.2.0-rc5+ #5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:

Allocated by task 2428879040:
------------[ cut here ]------------
kernel BUG at mm/slab.c:4178!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9485 Comm: syz-executor.2 Not tainted 5.2.0-rc5+ #5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__check_heap_object+0xcb/0xd0 mm/slab.c:4202
Code: 4c 89 d1 4d 89 c8 e8 44 4d 07 00 5b 41 5e 5d c3 49 8b 73 58 41 0f b6 d0 48 c7 c7 15 78 5d 88 4c 89 d1 4d 89 c8 e8 e5 4d 07 00 <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 83 ff 10 74 4a 48 89 fb 48
RSP: 0018:ffff88809afd1d50 EFLAGS: 00010046
RAX: 0000000000000f9b RBX: 00000000000011b0 RCX: 000000000000000c
RDX: 000000000000000c RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88809afd1d60 R08: 0000000000000000 R09: ffffffff81b5ce7a
R10: ffff88809afd1eb0 R11: ffff8880aa400dc0 R12: ffff88809afd1eb1
R13: 0000000000000200 R14: ffff88809afd0d00 R15: ffff88809afd1eb0
FS:  0000555555b8c940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff8adaea30 CR3: 00000000a0fe4000 CR4: 00000000001406f0
Call Trace:
Modules linked in:
---[ end trace 1934b9022ca312f4 ]---
RIP: 0010:__check_heap_object+0xcb/0xd0 mm/slab.c:4202
Code: 4c 89 d1 4d 89 c8 e8 44 4d 07 00 5b 41 5e 5d c3 49 8b 73 58 41 0f b6 d0 48 c7 c7 15 78 5d 88 4c 89 d1 4d 89 c8 e8 e5 4d 07 00 <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 83 ff 10 74 4a 48 89 fb 48
RSP: 0018:ffff88809afd1d50 EFLAGS: 00010046
RAX: 0000000000000f9b RBX: 00000000000011b0 RCX: 000000000000000c
RDX: 000000000000000c RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88809afd1d60 R08: 0000000000000000 R09: ffffffff81b5ce7a
R10: ffff88809afd1eb0 R11: ffff8880aa400dc0 R12: ffff88809afd1eb1
R13: 0000000000000200 R14: ffff88809afd0d00 R15: ffff88809afd1eb0
FS:  0000555555b8c940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff8adaea30 CR3: 00000000a0fe4000 CR4: 00000000001406f0