================================================================== BUG: KASAN: use-after-free in check_noncircular+0x91/0x560 kernel/locking/lockdep.c:1722 Write of size 56 at addr ffff888095615560 by task syz-executor.0/9845 CPU: 0 PID: 9845 Comm: syz-executor.0 Not tainted 5.3.0-rc1+ #49 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Allocated by task 4045389940: BUG: unable to handle page fault for address: ffffffff8b001f28 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 8c70067 P4D 8c70067 PUD 8c71063 PMD 0 Thread overran stack, or stack corrupted Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9845 Comm: syz-executor.0 Not tainted 5.3.0-rc1+ #49 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:stack_depot_fetch+0x7/0x30 lib/stackdepot.c:201 Code: 44 00 00 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 2a 02 f7 fd 0f 0b e8 23 02 f7 fd 0f 0b 90 89 f8 25 ff ff 1f 00 <48> 8b 04 c5 30 1f 00 8a c1 ef 11 81 e7 f0 3f 00 00 48 8d 4c 38 18 RSP: 0018:ffff888095615338 EFLAGS: 00010006 RAX: 00000000001fffff RBX: ffffea0002558500 RCX: 88b9880b547c8700 RDX: 0000000000000000 RSI: ffff888095615370 RDI: 000000001fffffff RBP: ffff8880956153f0 R08: ffffffff81823129 R09: ffffed1015d444c6 R10: ffffed1015d444c6 R11: 0000000000000000 R12: ffff8880aa5918c0 R13: ffff888095615640 R14: ffff888095615560 R15: ffff888095614640 FS: 000055555685d940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff8b001f28 CR3: 000000007bf0e000 CR4: 00000000001406f0 Call Trace: Modules linked in: CR2: ffffffff8b001f28 ---[ end trace d5c487c927b1af45 ]--- RIP: 0010:stack_depot_fetch+0x7/0x30 lib/stackdepot.c:201 Code: 44 00 00 31 c0 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 2a 02 f7 fd 0f 0b e8 23 02 f7 fd 0f 0b 90 89 f8 25 ff ff 1f 00 <48> 8b 04 c5 30 1f 00 8a c1 ef 11 81 e7 f0 3f 00 00 48 8d 4c 38 18 RSP: 0018:ffff888095615338 EFLAGS: 00010006 RAX: 00000000001fffff RBX: ffffea0002558500 RCX: 88b9880b547c8700 RDX: 0000000000000000 RSI: ffff888095615370 RDI: 000000001fffffff RBP: ffff8880956153f0 R08: ffffffff81823129 R09: ffffed1015d444c6 R10: ffffed1015d444c6 R11: 0000000000000000 R12: ffff8880aa5918c0 R13: ffff888095615640 R14: ffff888095615560 R15: ffff888095614640 FS: 000055555685d940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff8b001f28 CR3: 000000007bf0e000 CR4: 00000000001406f0