================================================================== 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 ffff8801b3f5eea8 by task syz-executor2/11270 PANIC: double fault, error_code: 0x0 CPU: 0 PID: 11256 Comm: syz-executor4 Not tainted 4.18.0-rc3+ #55 CPU: 1 PID: 11270 Comm: syz-executor2 Not tainted 4.18.0-rc3+ #55 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: RIP: 0010:__lock_acquire+0x2e/0x5020 kernel/locking/lockdep.c:3294 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 Code: 41 57 41 89 cf 41 print_address_description+0x6c/0x20b mm/kasan/report.c:256 56 41 55 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 49 89 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 fd __debug_check_no_obj_freed lib/debugobjects.c:775 [inline] debug_check_no_obj_freed+0x467/0x595 lib/debugobjects.c:815 41 54 45 89 free_pages_prepare mm/page_alloc.c:1027 [inline] __free_pages_ok+0x4d5/0x2a60 mm/page_alloc.c:1245 cc 53 65 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 free_compound_page+0x5c/0x70 mm/page_alloc.c:566 fc free_transhuge_page+0x2ec/0x460 mm/huge_memory.c:2729 ff df 48 89 84 24 98 RSP: 0018:ffff8801b21ccec0 EFLAGS: 00010086 __put_compound_page+0x96/0xe0 mm/swap.c:96 RAX: 0000000000000000 RBX: 1ffff10036439a55 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f92620 release_pages+0x782/0x14e0 mm/swap.c:760 RBP: ffff8801b21cd250 R08: 0000000000000000 R09: 0000000000000000 R10: ffff8801b408fbe0 R11: ffff88019e51acbb R12: 0000000000000000 R13: ffffffff88f92620 R14: ffff88019e51a540 R15: 0000000000000002 FS: 00000000016ce940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8801b21cceb8 CR3: 000000019aa68000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: