Hi. On Mar 11, Firefox has been closed again. After a couple of hours,
suddenly system began to slow down, mouse cursor moves very lazy etc.
RAM usage was full. (I have only 1GB - planned to add more.) Anyway,
there was YouTube and about 5, 6 other tabs opened. Additionally, a
second Firefox was also running with a couple of tabs opened. System log
files, such as, /var/log/kern.log and /var/log/syslog contained such
entry:

● Mar 11 19:46:53 t4 kernel: [31159.076986] Out of memory: Kill process
4316 (plugin-containe) score 641 or sacrifice child

● Mar 11 19:46:53 t4 kernel: [31159.076992] Killed process 4316 (plugin-
containe) total-vm:1865424kB, anon-rss:735720kB, file-rss:0kB

● Mar 11 19:47:33 t4 kernel: [31200.111636] Chrome_ChildThr[2619]:
segfault at 0 ip b77b72e5 sp b21fe9f0 error 6 in plugin-
container[b77b3000+1b000]

Generally, this log message is longer, but I think that it's appropriate
for another, new thread. One thing, which makes me wonder is (I skipped
the entry for date and kernel name):

● [31159.073984] Call Trace:
kernel: [31159.073993]  [<c10fd0b5>] dump_header.isra.6+0x85/0xc0
kernel: [31159.073997]  [<c10fd30c>] oom_kill_process+0x5c/0x80
kernel: [31159.074001]  [<c10fd725>] out_of_memory+0xc5/0x1c0
kernel: [31159.074006]  [<c110163e>] __alloc_pages_nodemask+0x72e/0x740
kernel: [31159.074010]  [<c10fc408>] filemap_fault+0x1f8/0x370
kernel: [31159.074016]  [<c1117eae>] __do_fault+0x6e/0x550
kernel: [31159.074020]  [<c111b741>] handle_pte_fault+0xa1/0x2d0
kernel: [31159.074024]  [<c111c6bb>] handle_mm_fault+0x21b/0x310
kernel: [31159.074029]  [<c15bba28>] do_page_fault+0x158/0x4b0
kernel: [31159.074034]  [<c1085fc5>] ? getnstimeofday+0x55/0x120
kernel: [31159.074039]  [<c12c0ed0>] ? copy_to_user+0x40/0x60
kernel: [31159.074043]  [<c1061732>] ? sys_gettimeofday+0x32/0x70
kernel: [31159.074047]  [<c15bb8d0>] ? vmalloc_fault+0x195/0x195
kernel: [31159.074051]  [<c15b8c53>] error_code+0x67/0x6c

According to the above entries (and the whole log), I wonder if I should
create a new bug report, related to this issue. Here are some technical
informations:

● Firefox 52.0 (32 bit.)

The rest is the same as in bug report. Thanks, best regards.

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https://bugs.launchpad.net/bugs/1656065

Title:
  Firefox and plugin-container (Chrome_ChildThr): segfault at 0 ip
  b76df673 sp b1efe9f0 error 6.

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