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Description of problem: I have multiprocess feature enabled and tab crashes when uploading big attachment Version-Release number of selected component (if applicable): firefox-49.0-2.fc24.x86_64 How reproducible: always Steps to Reproduce: 1. Go to e.g. https://bugzilla.redhat.com/attachment.cgi?bugid=1388297&action=enter 2. Attempt to upload 306K big file: # ls -lh /var/log/Xorg.0.log.old -rw-r--r--. 1 root root 306K Oct 24 19:04 /var/log/Xorg.0.log.old Actual results: Bad news first: This tab has crashed Expected results: Should work Additional info: Output on terminal when I start firefox from it (no other FF running before that) with `firefox -P work`: ###!!! [Parent][MessageChannel] Error: (msgtype=0x2C007A,name=PBrowser::Msg_Destroy) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x2C007A,name=PBrowser::Msg_Destroy) Channel error: cannot send/recv [Parent 2894] WARNING: pipe error (65): Connection reset by peer: file /builddir/build/BUILD/firefox-49.0/firefox-49.0/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 316 [Parent 2894] WARNING: pipe error (72): Connection reset by peer: file /builddir/build/BUILD/firefox-49.0/firefox-49.0/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 316
Is selinux policy enforced? If so can you please try permissive mode? The plugin-container may not have needed rights.
Wow. You are right - had no idea this might be the reason (it worked with smaller file I have copied to /tmp and modified - that probably changed SELinux labels). Anyway, with permissive I got: type=AVC msg=audit(1477380548.726:363): avc: denied { read } for pid=4327 comm="Chrome_ChildThr" path="/var/log/upgrade.log" dev="dm-1" ino=2624029 scontext=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 tcontext=system_u:object_r:var_log_t:s0 tclass=file permissive=1 and with enforcing: type=AVC msg=audit(1477380834.056:385): avc: denied { read } for pid=4735 comm="Chrome_ChildThr" path="/var/log/boot.log" dev="dm-1" ino=2621454 scontext=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 tcontext=system_u:object_r:plymouthd_var_log_t:s0 tclass=file permissive=0 type=ANOM_ABEND msg=audit(1477380834.056:386): auid=1000 uid=1000 gid=1000 ses=2 subj=unconfined_u:unconfined_r:mozilla_plugin_t:s0-s0:c0.c1023 pid=4735 comm="Chrome_ChildThr" exe="/usr/lib64/firefox/plugin-container" sig=11 SELinux packages versions are: selinux-policy-targeted-3.13.1-191.19.fc24.noarch libselinux-2.5-9.fc24.x86_64
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Created attachment 1304589 [details] test
Works for me now with: selinux-policy-targeted-3.13.1-259.fc26.noarch libselinux-2.6-6.fc26.x86_64 firefox-54.0-2.fc26.x86_64