https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92410
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |needs-bisection
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-11-08
CC| |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
I can confirm the issue with ASAN:
==10808==ERROR: AddressSanitizer: heap-buffer-overflow on address
0xffffaaf536f0 at pc 0x000001cc3bdc bp 0xffffcfc5bb40 sp 0xffffcfc5bb58
READ of size 8 at 0xffffaaf536f0 thread T0
#0 0x1cc3bd8 in regstat_bb_compute_calls_crossed ../../gcc/regstat.c:327
#1 0x1cc43dc in regstat_compute_calls_crossed() ../../gcc/regstat.c:379
#2 0x3d89080 in sched_init() ../../gcc/haifa-sched.c:7335
#3 0x3d891cc in haifa_sched_init() ../../gcc/haifa-sched.c:7352
#4 0x1de31a8 in schedule_insns() ../../gcc/sched-rgn.c:3514
#5 0x1de5508 in rest_of_handle_sched2 ../../gcc/sched-rgn.c:3746
#6 0x1de5954 in execute ../../gcc/sched-rgn.c:3882
#7 0x1b8b500 in execute_one_pass(opt_pass*) ../../gcc/passes.c:2494
#8 0x1b8be8c in execute_pass_list_1 ../../gcc/passes.c:2580
#9 0x1b8bf10 in execute_pass_list_1 ../../gcc/passes.c:2581
#10 0x1b8bf10 in execute_pass_list_1 ../../gcc/passes.c:2581
#11 0x1b8bfcc in execute_pass_list(function*, opt_pass*)
../../gcc/passes.c:2591
#12 0xe9bb6c in cgraph_node::expand() ../../gcc/cgraphunit.c:2194
#13 0xe9cda4 in expand_all_functions ../../gcc/cgraphunit.c:2332
#14 0xe9f684 in symbol_table::compile() ../../gcc/cgraphunit.c:2688
#15 0xea0198 in symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2868
#16 0x1f6a6f4 in compile_file ../../gcc/toplev.c:481
#17 0x1f74fd4 in do_compile ../../gcc/toplev.c:2166
#18 0x1f75a1c in toplev::main(int, char**) ../../gcc/toplev.c:2301
#19 0x407f270 in main ../../gcc/main.c:39
#20 0xffffaea6a3e8 in __libc_start_main (/lib64/libc.so.6+0x243e8)
#21 0x87c324 (/home/marxin/Programming/gcc/objdir/gcc/cc1+0x87c324)
0xffffaaf536f0 is located 0 bytes to the right of 240-byte region
[0xffffaaf53600,0xffffaaf536f0)
allocated by thread T0 here:
#0 0xffffaeeb9918 in malloc (/usr/lib64/libasan.so.5+0xe8918)
#1 0x42a95bc in xrealloc ../../libiberty/xmalloc.c:177
#2 0xf26e1c in df_grow_insn_info() ../../gcc/df-scan.c:544
#3 0xf242bc in df_scan_alloc(bitmap_head*) ../../gcc/df-scan.c:262
#4 0x177e470 in do_reload ../../gcc/ira.c:5558
#5 0x177eeb0 in execute ../../gcc/ira.c:5681
#6 0x1b8b500 in execute_one_pass(opt_pass*) ../../gcc/passes.c:2494
#7 0x1b8be8c in execute_pass_list_1 ../../gcc/passes.c:2580
#8 0x1b8bf10 in execute_pass_list_1 ../../gcc/passes.c:2581
#9 0x1b8bfcc in execute_pass_list(function*, opt_pass*)
../../gcc/passes.c:2591
#10 0xe9bb6c in cgraph_node::expand() ../../gcc/cgraphunit.c:2194
#11 0xe9cda4 in expand_all_functions ../../gcc/cgraphunit.c:2332
#12 0xe9f684 in symbol_table::compile() ../../gcc/cgraphunit.c:2688
#13 0xea0198 in symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2868
#14 0x1f6a6f4 in compile_file ../../gcc/toplev.c:481
#15 0x1f74fd4 in do_compile ../../gcc/toplev.c:2166
#16 0x1f75a1c in toplev::main(int, char**) ../../gcc/toplev.c:2301
#17 0x407f270 in main ../../gcc/main.c:39
#18 0xffffaea6a3e8 in __libc_start_main (/lib64/libc.so.6+0x243e8)
#19 0x87c324 (/home/marxin/Programming/gcc/objdir/gcc/cc1+0x87c324)
SUMMARY: AddressSanitizer: heap-buffer-overflow ../../gcc/regstat.c:327 in
regstat_bb_compute_calls_crossed
Shadow bytes around the buggy address:
0x200ff55ea680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fa
0x200ff55ea690: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x200ff55ea6a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x200ff55ea6b0: 00 00 00 00 00 00 00 fa fa fa fa fa fa fa fa fa
0x200ff55ea6c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x200ff55ea6d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00[fa]fa
0x200ff55ea6e0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x200ff55ea6f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x200ff55ea700: 00 00 00 00 00 00 00 00 fa fa fa fa fa fa fa fa
0x200ff55ea710: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x200ff55ea720: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
Shadow gap: cc
==10808==ABORTING
However, I see the problem also for revision r275833. I'm going to bisect to
older revisions..
