================================================================== BUG: KASAN: out-of-bounds in get_frame_pointer arch/x86/include/asm/stacktrace.h:64 [inline] BUG: KASAN: out-of-bounds in __unwind_start+0x37c/0x3c0 arch/x86/kernel/unwind_frame.c:76 Read of size 8 at addr ffff8801b9d67820 by task syz-executor035/3793 CPU: 0 PID: 3793 Comm: syz-executor035 Not tainted 4.9.96-g320d53a #10 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801b893f7b0 ffffffff81eb0b69 ffffea0006e759c0 ffff8801b9d67820 0000000000000000 ffff8801b9d67828 ffff8801b893f8e8 ffff8801b893f7e8 ffffffff8156540b ffff8801b9d67820 0000000000000008 0000000000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] print_address_description+0x6c/0x234 mm/kasan/report.c:256 [] kasan_report_error mm/kasan/report.c:355 [inline] [] kasan_report.cold.6+0x242/0x2fe mm/kasan/report.c:412 [] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433 [] get_frame_pointer arch/x86/include/asm/stacktrace.h:64 [inline] [] __unwind_start+0x37c/0x3c0 arch/x86/kernel/unwind_frame.c:76 [] unwind_start arch/x86/include/asm/unwind.h:39 [inline] [] __save_stack_trace+0x59/0xf0 arch/x86/kernel/stacktrace.c:41 [] save_stack_trace_tsk+0x48/0x70 arch/x86/kernel/stacktrace.c:71 [] proc_pid_stack+0x148/0x220 fs/proc/base.c:467 [] proc_single_show+0xfd/0x170 fs/proc/base.c:769 [] traverse+0x363/0x920 fs/seq_file.c:124 [] seq_read+0xd19/0x12e0 fs/seq_file.c:195 [] __vfs_read+0x115/0x570 fs/read_write.c:449 [] vfs_read+0x120/0x380 fs/read_write.c:472 [] SYSC_pread64 fs/read_write.c:626 [inline] [] SyS_pread64+0x145/0x170 fs/read_write.c:613 [] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb The buggy address belongs to the page: page:ffffea0006e759c0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0x8000000000000000() page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801b9d67700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8801b9d67780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8801b9d67800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff8801b9d67880: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 ffff8801b9d67900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================