All of webkit browsers (chromium, chrome, opera, yandex-browser) freeze in few seconds after start or while opening/closing some tabs.
It started happening some days ago, I think after some dist-upgrade and reboot between 25.11.2016 and 27.11.2016.
I've attached my /var/log/apt/history.log.
This is what strace shows for all webkit browsers:
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=13, events=POLLIN}, {fd=16, events=POLLIN}, {fd=72, events=POLLIN}], 5, 0) = 1 ([{fd=16, revents=POLLIN}])
recvmsg(13, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
read(16, "!", 2) = 1
recvmsg(6, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(13, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=13, events=POLLIN}, {fd=16, events=POLLIN}, {fd=72, events=POLLIN}], 5, 0) = 0 (Timeout)
recvmsg(13, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(6, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(13, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=13, events=POLLIN}, {fd=16, events=POLLIN}, {fd=72, events=POLLIN}], 5, 3) = 0 (Timeout)
recvmsg(13, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(6, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(13, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=13, events=POLLIN}, {fd=16, events=POLLIN}, {fd=72, events=POLLIN}], 5, 0) = 0 (Timeout)
recvmsg(13, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(6, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(13, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}, {fd=13, events=POLLIN}, {fd=16, events=POLLIN}, {fd=72, events=POLLIN}], 5, 2) = 0 (Timeout)
recvmsg(13, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
gettid() = 12467
gettid() = 12467
read(33, "d\215\267\23;`a\265\37\347\267\205'\252\\\240", 16) = 16
read(33, "\3015l\267\313\322\337\220\214\352L\337\202 ,P", 16) = 16
read(33, "\3329\254\215\251(\363\264", 8) = 8
futex(0x7ffcd8b00204, FUTEX_WAIT_PRIVATE, 1, NULL <unfinished ...>
+++ killed by SIGKILL +++
<unfinished ...> is shown after killing the browser.