KASAN: out-of-bounds Read in unwind_next

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	KASAN: out-of-bounds Read in unwind_next_frame	C		error	14	1548d	1882d	0/1	upstream: reported C repro on 2019/09/26 21:20
upstream	KASAN: out-of-bounds Read in unwind_next_frame fs	syz	error	error	12	1880d	2145d	0/28	auto-obsoleted due to no activity on 2022/09/07 09:08
linux-4.19	KASAN: out-of-bounds Read in unwind_next_frame				1	1827d	1827d	0/1	auto-closed as invalid on 2020/03/19 23:00
linux-4.19	KASAN: stack-out-of-bounds Read in unwind_next_frame	C		error	525	644d	1729d	0/1	upstream: reported C repro on 2020/02/26 18:51
upstream	KASAN: stack-out-of-bounds Read in unwind_next_frame kernel	C			929	609d	2346d	0/28	closed as dup on 2018/06/20 07:51
android-49	KASAN: out-of-bounds Read in unwind_next_frame	C			14	2233d	2049d	0/3	public: reported C repro on 2019/04/13 00:00
android-54	KASAN: out-of-bounds Read in unwind_next_frame				16	1163d	1669d	0/2	auto-closed as invalid on 2022/01/13 05:16
linux-4.19	KASAN: out-of-bounds Read in unwind_next_frame (2)				1	1416d	1416d	0/1	auto-closed as invalid on 2021/05/04 22:57
android-414	KASAN: out-of-bounds Read in unwind_next_frame (2)	C			5	1822d	1929d	0/1	public: reported C repro on 2019/08/11 14:38

================================================================== BUG: KASAN: out-of-bounds in deref_stack_regs arch/x86/kernel/unwind_orc.c:290 [inline] BUG: KASAN: out-of-bounds in unwind_next_frame+0x1595/0x1930 arch/x86/kernel/unwind_orc.c:420 Read of size 8 at addr ffff88019df4f818 by task syz-executor1/25085 CPU: 1 PID: 25085 Comm: syz-executor1 Not tainted 4.14.76+ #20 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x11b lib/dump_stack.c:53 print_address_description+0x60/0x22b mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report.cold.6+0x11b/0x2dd mm/kasan/report.c:409 deref_stack_regs arch/x86/kernel/unwind_orc.c:290 [inline] unwind_next_frame+0x1595/0x1930 arch/x86/kernel/unwind_orc.c:420 __save_stack_trace+0x7d/0xf0 arch/x86/kernel/stacktrace.c:44 save_stack_trace_tsk+0x3e/0x60 arch/x86/kernel/stacktrace.c:73 proc_pid_stack+0x17c/0x260 fs/proc/base.c:460 proc_single_show+0xf1/0x160 fs/proc/base.c:762 seq_read+0x4e0/0x11d0 fs/seq_file.c:237 do_loop_readv_writev fs/read_write.c:698 [inline] do_iter_read+0x3cc/0x580 fs/read_write.c:922 vfs_readv+0xe6/0x150 fs/read_write.c:984 do_preadv+0x187/0x230 fs/read_write.c:1068 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457569 RSP: 002b:00007fae9f29dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457569 RDX: 1000000000000156 RSI: 0000000020000480 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fae9f29e6d4 R13: 00000000004c3088 R14: 00000000004d4a40 R15: 00000000ffffffff The buggy address belongs to the page: page:ffffea000677d3c0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0x4000000000000000() raw: 4000000000000000 0000000000000000 0000000000000000 00000000ffffffff raw: 0000000000000000 ffffea000677d3e0 0000000000000000 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88019df4f700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88019df4f780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88019df4f800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88019df4f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88019df4f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================