Andrew Morton wrote on 8/2/2019 1:23 PM:
(switched to email. Please respond via emailed reply-to-all, not via the
bugzilla web interface).
On Thu, 01 Aug 2019 22:34:16 +0000 bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote:
[259701.549382] Code: 10 e9 67 ff ff ff 0f 1f 44 00 00 48 8b 15 b1 6c 0c 00 f7
d8 64 89 02 48 c7 c0 ff ff ff ff e9 6b ff ff ff b8 0b 00 00 00 0f 05 <48> 3d 01
f0 ff ff 73 01 c3 48 8b 0d 89 6c 0c 00 f7 d8 64 89 01 48
[259701.549382] RSP: 002b:00007ffe529db138 EFLAGS: 00000206 ORIG_RAX:
000000000000000b
[259701.549382] RAX: ffffffffffffffda RBX: 0000564a5eabce70 RCX:
00007f504d0ec1d7
[259701.549382] RDX: 00007ffe529db140 RSI: 0000000000400000 RDI:
00007f5044b65000
[259701.549382] RBP: 0000564a5eafe460 R08: 000000000000000b R09:
000000010283e000
[259701.549382] R10: 0000000000000001 R11: 0000000000000206 R12:
0000564a5e475b08
[259701.549382] R13: 0000564a5e475c80 R14: 00007ffe529db190 R15:
0000000000000c80
[259701.707238] Disabling lock debugging due to kernel taint
I assume the above is misbehaviour in the DRM code?
Most probably.
When I switched back to 5.2, crashes were gone, but log was filled with
11 millions of messages complaining about alloc_contig_range problems:
[22042.108043] alloc_contig_range: [106f118, 106f119) PFNs busy
[22042.114400] alloc_contig_range: [106f11c, 106f11d) PFNs busy
[22042.120787] alloc_contig_range: [106f11d, 106f11e) PFNs busy
[22047.093057] alloc_contig_range: 47963 callbacks suppressed
[22047.093058] alloc_contig_range: [106f117, 106f118) PFNs busy
[22047.105576] alloc_contig_range: [106f118, 106f119) PFNs busy
[22047.111937] alloc_contig_range: [106f11c, 106f11d) PFNs busy
[22047.118329] alloc_contig_range: [106f11d, 106f11e) PFNs busy
In total there is 9735 messages logged individually, and 11 million
suppressed:
petr-dev3:~$ dmesg | grep alloc_contig.*PFNs | wc -l
9735
petr-dev3:~$ expr `echo \`dmesg | grep alloc_contig.*callbacks | cut -d'
' -f3\` | sed -e 's/ / + /'g`
11333722
So it could be my problems are caused by new Xorg driver.
After I disabled CMA system is stable on 5.2. I did not try 5.3-rc2 yet.
Petr
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