================================================================== kasan: CONFIG_KASAN_INLINE enabled BUG: KASAN: stack-out-of-bounds in pgd_val arch/x86/include/asm/paravirt.h:414 [inline] BUG: KASAN: stack-out-of-bounds in p4d_page_vaddr arch/x86/include/asm/pgtable.h:895 [inline] BUG: KASAN: stack-out-of-bounds in pud_offset arch/x86/include/asm/pgtable.h:907 [inline] BUG: KASAN: stack-out-of-bounds in vmalloc_fault+0x6d0/0x770 arch/x86/mm/fault.c:397 kasan: GPF could be caused by NULL-ptr deref or user memory access Read of size 8 at addr ffff8881da96cff8 by task syz-executor3/25052 general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 25031 Comm: syz-executor5 Not tainted 4.20.0-rc3+ #314 CPU: 1 PID: 25052 Comm: syz-executor3 Not tainted 4.20.0-rc3+ #314 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: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 RIP: 0010:lookup_object lib/debugobjects.c:157 [inline] RIP: 0010:debug_object_deactivate+0x191/0x450 lib/debugobjects.c:543 Code: 02 00 00 48 8b 1b 41 bf 01 00 00 00 48 85 db 74 46 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 41 83 c7 01 48 89 fe 48 c1 ee 03 <80> 3c 06 00 0f 85 04 02 00 00 48 3b 53 18 0f 84 53 01 00 00 48 89 RSP: 0018:ffff8881da8b0ba0 EFLAGS: 00010003 RAX: dffffc0000000000 RBX: 56415741e5894855 RCX: ffffffff8393af9d print_address_description.cold.7+0x9/0x1ff mm/kasan/report.c:256 RDX: ffff8881dae26620 RSI: 0ac82ae83cb1290d RDI: 56415741e589486d kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.8+0x242/0x309 mm/kasan/report.c:412 RBP: ffff8881da8b0c58 R08: ffffed103b516161 R09: ffffed103b516160 R10: ffffed103b516160 R11: 0000000000000003 R12: 1ffff1103b516176 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 R13: ffffffff8b291fa8 R14: ffffffff895a9020 R15: 0000000000000005 pgd_val arch/x86/include/asm/paravirt.h:414 [inline] p4d_page_vaddr arch/x86/include/asm/pgtable.h:895 [inline] pud_offset arch/x86/include/asm/pgtable.h:907 [inline] vmalloc_fault+0x6d0/0x770 arch/x86/mm/fault.c:397 FS: 00007f90f8618700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 do_kern_addr_fault arch/x86/mm/fault.c:1203 [inline] __do_page_fault+0x860/0xe60 arch/x86/mm/fault.c:1487 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcbcc2e5518 CR3: 0000000196114000 CR4: 00000000001406f0 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: ---[ end trace 19908f2ea7597ad0 ]--- RIP: 0010:lookup_object lib/debugobjects.c:157 [inline] RIP: 0010:debug_object_deactivate+0x191/0x450 lib/debugobjects.c:543 Code: 02 00 00 48 8b 1b 41 bf 01 00 00 00 48 85 db 74 46 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 18 41 83 c7 01 48 89 fe 48 c1 ee 03 <80> 3c 06 00 0f 85 04 02 00 00 48 3b 53 18 0f 84 53 01 00 00 48 89 RSP: 0018:ffff8881da8b0ba0 EFLAGS: 00010003 RAX: dffffc0000000000 RBX: 56415741e5894855 RCX: ffffffff8393af9d RDX: ffff8881dae26620 RSI: 0ac82ae83cb1290d RDI: 56415741e589486d RBP: ffff8881da8b0c58 R08: ffffed103b516161 R09: ffffed103b516160 R10: ffffed103b516160 R11: 0000000000000003 R12: 1ffff1103b516176 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1139 R13: ffffffff8b291fa8 R14: ffffffff895a9020 R15: 0000000000000005 RIP: 0010:mntput_no_expire+0x1a1/0xc00 fs/namespace.c:1132 FS: 00007f90f8618700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 Code: 48 85 c0 0f 84 5c 01 00 00 e8 8b aa a6 ff 49 8d 7c 24 48 48 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 b1 08 00 00 49 8b 44 24 48 <65> ff 08 e8 a7 d3 8f ff 31 ff 41 89 c4 89 c6 e8 6b ab a6 ff 45 85 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 RSP: 0018:ffff88816e4b7200 EFLAGS: 00010246 CR2: 00007fcbcc2e5518 CR3: 0000000196114000 CR4: 00000000001406f0 RAX: 0000607e24e2d160 RBX: 1ffff1102dc96e44 RCX: ffffffff81d8e050 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81d8e065 RDI: ffff8881d5c7d648 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 RBP: ffff88816e4b7328 R08: ffff888168d08380 R09: ffffed103b5e5b67