[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#52446: 28.0.90; Infinite loop in add_row_entry
From: |
Eli Zaretskii |
Subject: |
bug#52446: 28.0.90; Infinite loop in add_row_entry |
Date: |
Sun, 12 Dec 2021 12:10:57 +0200 |
> From: Po Lu <luangruo@yahoo.com>
> Cc: 52446@debbugs.gnu.org
> Date: Sun, 12 Dec 2021 17:51:05 +0800
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> > At which point in the code did you print those?
>
> Inside the infinite loop.
And if you go over the row_table[] array, how many such entries doi
you see there? And what is the value of row_table_size?
> RIGHT: 54 glyphs
> 0 0: CHAR[0x0] pos=-734003200 blev=0,btyp=UNDEF w=0 a+d=9216+-18611
> 1 0: CHAR[0xec000000] pos=0 blev=0,btyp=UNDEF w=0 a+d=-7424+909 face=119
> vof=1
> 2 0: CHAR[0x2500007f] pos=452984959 blev=0,btyp=UNDEF w=0 a+d=0+0
> 3 0: CHAR[0x0] pos=-318766977 blev=0,btyp=UNDEF w=0 a+d=8704+0 face=1
> 4 0: pos=-1392508928 w=127 a+d=1280+-16534 face=828327 vof=-20 MB OVL [
> ]
> 5 127: CHAR[0x0] pos=805306368 blev=0,btyp=UNDEF w=0 a+d=0+0
> 6 127: CHAR[0x30000000] pos=805306368 blev=0,btyp=UNDEF w=0 a+d=0+0
> 7 127: CHAR[0x0] pos=0 blev=0,btyp=UNDEF w=0 a+d=12288+0
> 8 127: CHAR[0x0] pos=0 blev=0,btyp=UNDEF w=0 a+d=0+0
> 9 127: CHAR[0x0] pos=33554432 blev=0,btyp=UNDEF w=0 a+d=512+0
> 10 127: CHAR[0x0] pos=0 blev=0,btyp=UNDEF w=0 a+d=12288+0
> 11 127: CHAR[0x30000000] pos=2063597568 blev=0,btyp=UNDEF w=127 a+d=0+0
> 12 254: CHAR[0x1000000] pos=0 blev=0,btyp=UNDEF w=0 a+d=-4096+743 vof=1
> 13 254: CHAR[0x1000000] pos=16777216 blev=0,btyp=UNDEF w=0 a+d=256+0
> 14 254: CHAR[0x0] pos=16777216 blev=0,btyp=UNDEF w=0 a+d=0+0
> 15 254: CHAR[0x1000000] pos=0 blev=0,btyp=UNDEF w=0 a+d=-26624+11687 vof=1
> 16 254: CHAR[0x0] pos=16777216 blev=0,btyp=UNDEF w=0 a+d=256+0
> 17 254: CHAR[0x0] pos=0 blev=0,btyp=UNDEF w=0 a+d=0+0
> 18 254: pos=0 w=-1 a+d=-1+-1 vof=-1 MB PAD N/A OVL AVOID [ ]
> 19 253: CHAR[0x0] pos=16777216 blev=0,btyp=UNDEF w=0 a+d=0+0
> 20 253: CHAR[0x74000000] pos=0 blev=0,btyp=UNDEF w=0 a+d=0+0 face=655360
> 21 253: CHAR[0x80000000] pos=-1929379713 blev=0,btyp=UNDEF w=0 a+d=0+16
> face=91794 vof=1
> 22 253: pos=0 w=0 a+d=-16384+-5898 face=655360 vof=-21 MB OVL [ ]
> 23 253: CHAR[0xf000007f] pos=1560281088 blev=0,btyp=UNDEF w=0
> a+d=-19712+-19263
> 24 253: pos=33554432 w=0 a+d=-16384+-6069 face=655360 vof=-21 MB OVL [ ]
> 25 253: CHAR[0x90000000] pos=-1258291200 blev=0,btyp=UNDEF w=0
> a+d=8960+-19263
> 26 253: CHAR[0xa400000] pos=-1543503872 blev=0,btyp=UNDEF w=0
> a+d=-16384+-17738 face=47798
> 27 253: CHAR[0xa0000000] pos=-1006632960 blev=0,btyp=UNDEF w=0 a+d=9728+0
> face=46272
> 28 253: CHAR[0x5000000] pos=-1879048192 blev=0,btyp=UNDEF w=0
> a+d=16384+-17736 face=47735
> 29 253: CHAR[0x5000000] pos=171966464 blev=0,btyp=UNDEF w=0 a+d=32000+11690
> vof=1
> 30 253: CHAR[0x6000000] pos=171966464 blev=0,btyp=UNDEF w=0 a+d=9472+26277
> vof=1
> 31 253: CHAR[0xc0000000] pos=-268435456 blev=0,btyp=UNDEF w=127 a+d=0+0
> 32 380: CHAR[0xd0000000] pos=33554559 blev=0,btyp=UNDEF w=0 a+d=12288+0
> 33 380: CHAR[0xd0000000] pos=-805306368 blev=0,btyp=UNDEF w=0
> a+d=-12288+245 face=245
> 34 380: CHAR[0xd0000000] pos=-805306368 blev=0,btyp=UNDEF w=0
> a+d=-12288+245 face=245
> 35 380: pos=-805306368 w=0 a+d=15104+-25445 face=245 vof=-20 MB OVL [ ]
> 36 380: CHAR[0x0] pos=805306368 blev=0,btyp=UNDEF w=0 a+d=8448+0 face=724146
> 37 380: CHAR[0x18000000] pos=553648128 blev=0,btyp=UNDEF w=-7102 a+d=22749+0
> 38 -6722: CHAR[0x6f00006d] pos=0 blev=0,btyp=UNDEF w=0 a+d=8448+0 face=221549
> 39 -6722: CHAR[0x2f000000] pos=553648243 blev=0,btyp=UNDEF w=25645
> a+d=31073+0
> 40 18923: pos=1918986355 w=29801 a+d=97+28528 face=156265 vof=27693 N/A OVL
> AVOID [ ]
> 41 48724: IMAGE[1] slice=8706,50290,47091,5475 pos=358856691 w=1 a+d=0+8706
> face=1 vof=-15246 PAD N/A OVL AVOID [ ]
> 42 48725: IMAGE[0] slice=0,24832,0,0 pos=358856691 w=1 a+d=0+8706 face=1
> vof=-15246 PAD N/A OVL AVOID [ ]
> 43 48726: pos=-1811939201 w=0 a+d=0+25024 face=78033 vof=-36 MB OVL [ ]
> 44 48726: CHAR[0xc0000000] pos=127 blev=0,btyp=UNDEF w=0 a+d=0+0
> 45 48726: CHAR[0x0] pos=1073741824 blev=0,btyp=UNDEF w=0 a+d=0+11868
> face=77407 vof=1
> 46 48726: CHAR[0xfd000000] pos=-251658240 blev=0,btyp=UNDEF w=0 a+d=0+0
> face=58281
> 47 48726: CHAR[0x0] pos=0 blev=0,btyp=UNDEF w=0 a+d=0+0
> 48 48726: CHAR[0x0] pos=16777216 blev=0,btyp=UNDEF w=0 a+d=0+0
> 49 48726: CHAR[0x0] pos=0 blev=0,btyp=UNDEF w=0 a+d=0+0
> 50 48726: CHAR[0x0] pos=0 blev=0,btyp=UNDEF w=0 a+d=0+0
> 51 48726: CHAR[0x21000000] pos=553648128 blev=0,btyp=UNDEF w=0 a+d=0+0
> face=50249
> 52 48726: CHAR[0x40000000] pos=1023422208 blev=0,btyp=UNDEF w=0 a+d=16640+0
> face=42283
> 53 48726: CHAR[0x1000000] pos=1073741824 blev=0,btyp=UNDEF w=0 a+d=0+0
> face=69034 vof=1536
>
> Does this make sense? I think it's starting to smell like a memory
> problem of sorts.
This glyph row is clearly garbage. So yes, the question is how did
that got into the table.
- bug#52446: 28.0.90; Infinite loop in add_row_entry, Po Lu, 2021/12/12
- bug#52446: 28.0.90; Infinite loop in add_row_entry, Eli Zaretskii, 2021/12/12
- bug#52446: 28.0.90; Infinite loop in add_row_entry, Po Lu, 2021/12/12
- bug#52446: 28.0.90; Infinite loop in add_row_entry, Eli Zaretskii, 2021/12/12
- bug#52446: 28.0.90; Infinite loop in add_row_entry, Po Lu, 2021/12/12
- bug#52446: 28.0.90; Infinite loop in add_row_entry,
Eli Zaretskii <=
- bug#52446: 28.0.90; Infinite loop in add_row_entry, Po Lu, 2021/12/12
- bug#52446: 28.0.90; Infinite loop in add_row_entry, Eli Zaretskii, 2021/12/12
- bug#52446: 28.0.90; Infinite loop in add_row_entry, Po Lu, 2021/12/12
- bug#52446: 28.0.90; Infinite loop in add_row_entry, Po Lu, 2021/12/13