Make the mistake cause by patch update....
please re-check the new patch
________________________________________
From: Dave Anderson <anderson@xxxxxxxxxx>
Sent: Friday, April 10, 2020 22:57
To: 赵乾利
Cc: d hatayama; Discussion list for crash utility usage, maintenance and development
Subject: Re: 答复: [External Mail]Re: [Crash-utility] zram decompress support for gcore/crash-utility
----- Original Message -----
> I got little problem to compile 32-bit on my x86-64 host..
> 96 /usr/bin/ld: skipping incompatible
> /usr/lib/gcc/x86_64-linux-gnu/4.8/libgcc.a when searching for -lgcc
> 97 /usr/bin/ld: cannot find -lgcc
> 98 /usr/bin/ld: skipping incompatible
> /usr/lib/gcc/x86_64-linux-gnu/4.8/libgcc_s.so when searching for -lgcc_s
> 99 /usr/bin/ld: cannot find -lgcc_s
>
> I think i have fixed the build warning,but failed rebuild in 32-bit since
> above error,please help confirm,and move log to try_zram_decompress,please
> check the attachment.
The patch now compiles OK, but my first simple test shows that something
is obviously wrong with the patch.
Here are a set of user-space addresses that have been swapped out to disk:
crash> set 1
PID: 1
COMMAND: "systemd"
TASK: ffff92a13a1e8000 [THREAD_INFO: ffff92a13a260000]
CPU: 2
STATE: TASK_INTERRUPTIBLE
crash> vm -p | grep SWAP
55d917fb5000 SWAP: /dev/dm-2 OFFSET: 55827
55d917fb7000 SWAP: /dev/dm-2 OFFSET: 55828
55d917fc2000 SWAP: /dev/dm-2 OFFSET: 121359
55d917fc6000 SWAP: /dev/dm-2 OFFSET: 88579
55d917fcb000 SWAP: /dev/dm-2 OFFSET: 88581
55d917fcc000 SWAP: /dev/dm-2 OFFSET: 88582
55d917fcd000 SWAP: /dev/dm-2 OFFSET: 88583
55d917fce000 SWAP: /dev/dm-2 OFFSET: 104963
55d917fcf000 SWAP: /dev/dm-2 OFFSET: 104964
...
Obviously any read of the addresses above should fail, but each
read returns successfully, and each read is screwing up the internal
buffering scheme:
crash> rd -u 55d917fb5000
55d917fb5000: 0000000000000000 ........
WARNING: malloc/free mismatch (53/54)
crash> rd -u 55d917fb7000
55d917fb7000: 0000000000000000 ........
WARNING: malloc/free mismatch (53/55)
crash> rd -u 55d917fc2000
55d917fc2000: 0000000000000000 ........
WARNING: malloc/free mismatch (53/56)
crash> rd -u 55d917fc6000
55d917fc6000: 0000000000000000 ........
WARNING: malloc/free mismatch (53/57)
crash>
Dave
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<<attachment: crash-zram0411.zip>>
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