Same picture with different NFS minor versions - 4.0, 4.1
Same picture with and without hyperthreading
Same picture with and without different mitigations on/off via kernel
command line.
100% reproducible within 4-5 repeats of make -j `cat /proc/cpuinfo |
grep processor | wc -l` ; make clean
The most interesting part - it is always the same file.
ls -laF
/var/autofs/local/src/openwrt/build_dir/target-mips_24kc_musl/linux-ar71xx_tiny/linux-4.14.125/arch/mips/include/generated/uapi/asm/ipcbuf.h
It becomes invisible from the client, but exists in the server. Usually
takes ~4-5 build
On 08/07/2019 11:59, Anton Ivanov wrote:
There are clearly some issues with nfs across an autofs mount (maybe
for hard mounts as well), so this may warrant an upgrade.
Example test. Run make -j 12 ; make clean in a loop on an nfs mounted
openwrt tree until it fails (usually 2-3 iterations).
There are clearly some issues with nfs across an autofs mount (maybe for
hard mounts as well), so this may warrant an upgrade.
Example test. Run make -j 12 ; make clean in a loop on an nfs mounted
openwrt tree until it fails (usually 2-3 iterations).
State on the client
ls -laF
/var/autofs
Package: src:linux
Version: 4.19.37-5
Severity: normal
File: linux-image-4.19.0-5-amd64
Dear Maintainer,
An attempt to mount an nfs mount via autofs when it is being unmounted
sometimes results in a deadlock.
This is easier to reproduce with nfsv3. It is more difficult but still
possible with
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