KASAN: stack-out-of-bounds Read in debug_check_no_obj

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	KASAN: stack-out-of-bounds Read in debug_check_no_obj_freed (2) mm	1	2112d	2112d	0/26	closed as invalid on 2018/07/07 06:58
upstream	KASAN: stack-out-of-bounds Read in debug_check_no_obj_freed fs	1	2112d	2112d	0/26	closed as invalid on 2018/07/06 15:28
upstream	KASAN: stack-out-of-bounds Read in debug_check_no_obj_freed (3) kernel	1	2111d	2111d	0/26	closed as invalid on 2018/07/07 11:48
upstream	KASAN: stack-out-of-bounds Read in debug_check_no_obj_freed (6) kernel	3	1943d	1972d	0/26	auto-closed as invalid on 2019/06/21 01:44
upstream	KASAN: stack-out-of-bounds Read in debug_check_no_obj_freed (5) mm	4	2095d	2102d	8/26	fixed on 2018/08/07 13:43

================================================================== BUG: KASAN: stack-out-of-bounds in __debug_check_no_obj_freed lib/debugobjects.c:775 [inline] BUG: KASAN: stack-out-of-bounds in debug_check_no_obj_freed+0x467/0x595 lib/debugobjects.c:815 Read of size 8 at addr ffff8801bf2c00a8 by task blkid/17346 CPU: 1 PID: 17346 Comm: blkid Not tainted 4.18.0-rc3+ #48 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+0x1c9/0x2b4 lib/dump_stack.c:113 PANIC: double fault, error_code: 0x0 print_address_description+0x6c/0x20b mm/kasan/report.c:256 CPU: 0 PID: 17324 Comm: syz-executor4 Not tainted 4.18.0-rc3+ #48 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 RIP: 0010:__lock_acquire+0x2e/0x5020 kernel/locking/lockdep.c:3294 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 Code: __debug_check_no_obj_freed lib/debugobjects.c:775 [inline] debug_check_no_obj_freed+0x467/0x595 lib/debugobjects.c:815 41 57 41 89 kmem_cache_free+0x216/0x2d0 mm/slab.c:3755 cf 41 remove_vma+0x164/0x1b0 mm/mmap.c:185 56 exit_mmap+0x365/0x5b0 mm/mmap.c:3116 41 55 __mmput kernel/fork.c:970 [inline] mmput+0x265/0x620 kernel/fork.c:991 49 89 fd 41 54 45 89 cc 53 65 exit_mm kernel/exit.c:544 [inline] do_exit+0xea9/0x2750 kernel/exit.c:852 4c 8b 34 25 40 ee 01 00 48 83 e4 f0 48 81 ec 60 03 00 00 48 8b 45 10 <89> 94 24 80 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 84 24 98 RSP: 0018:ffff8801b8dffe90 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 1ffff100371c004e RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f92620 RBP: ffff8801b8e00218 R08: 0000000000000000 R09: 0000000000000000 do_group_exit+0x177/0x440 kernel/exit.c:968 R10: ffff8801bf3ff1b8 R11: ffff8801dae236b3 R12: 0000000000000000 R13: ffffffff88f92620 R14: ffff8801c9f36040 R15: 0000000000000002 FS: 00007fce9fb05700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8801b8dffe88 CR3: 00000001ccf70000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000020000000 get_signal+0x88e/0x1970 kernel/signal.c:2468 DR3: 0000000020000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: