Hi,

I'm getting a crash in boinc-client, happens again when I restrart the service.
An Amicable numbers task with 4 CPUs is running at that point, although it doesn't seem to be related to the task itself, as it continues running past the previous failure point after restart.

boincerr.log is the following:

***
Error in `/usr/bin/boinc': munmap_chunk(): invalid pointer: 0x000055a1bf395030 ***
SIGABRT: abort called
Stack trace (36 frames):
/usr/lib/x86_64-linux-gnu/libboinc.so.7(boinc_catch_signal+0x1d8)[0x7fe1c4365b36]
/lib/x86_64-linux-gnu/libc.so.6(+0x37140)[0x7fe1c45fe140]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7fe1c45fe0bb]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16d)[0x7fe1c45fff5d]
/lib/x86_64-linux-gnu/libc.so.6(+0x8128d)[0x7fe1c464828d]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x270)[0x7fe1c4656650]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(CRYPTO_free+0x1d)[0x7fe1c23eb09d]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(BN_free+0x4d)[0x7fe1c244472d]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(+0xd3df9)[0x7fe1c245bdf9]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(EC_GROUP_free+0x17)[0x7fe1c245aa17]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(EC_KEY_free+0x3e)[0x7fe1c2463bee]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(+0x12692b)[0x7fe1c24ae92b]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(EVP_PKEY_free+0x40)[0x7fe1c24af080]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(+0x138720)[0x7fe1c24c0720]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(+0x13e2c0)[0x7fe1c24c62c0]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(ASN1_template_free+0x9f)[0x7fe1c24c65bf]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(+0x13e480)[0x7fe1c24c6480]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(ASN1_template_free+0x9f)[0x7fe1c24c65bf]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(+0x13e480)[0x7fe1c24c6480]
/lib/x86_64-linux-gnu/libcrypto.so.1.0.0(ASN1_item_free+0x15)[0x7fe1c24c6505]
/lib/x86_64-linux-gnu/libssl.so.1.0.0(SSL_SESSION_free+0xa0)[0x7fe1c280b810]
/lib/x86_64-linux-gnu/libssl.so.1.0.0(SSL_free+0xf8)[0x7fe1c2808b68]
/usr/lib/x86_64-linux-gnu/libcurl.so.4(+0x53869)[0x7fe1c3ef4869]
/usr/lib/x86_64-linux-gnu/libcurl.so.4(+0x579e9)[0x7fe1c3ef89e9]
/usr/lib/x86_64-linux-gnu/libcurl.so.4(+0x23e0c)[0x7fe1c3ec4e0c]
/usr/lib/x86_64-linux-gnu/libcurl.so.4(+0x23ee2)[0x7fe1c3ec4ee2]
/usr/lib/x86_64-linux-gnu/libcurl.so.4(+0x23f29)[0x7fe1c3ec4f29]
/usr/lib/x86_64-linux-gnu/libcurl.so.4(+0x4e3fa)[0x7fe1c3eef3fa]
/usr/lib/x86_64-linux-gnu/libcurl.so.4(+0x251d1)[0x7fe1c3ec61d1]
/usr/lib/x86_64-linux-gnu/libcurl.so.4(+0x38f1b)[0x7fe1c3ed9f1b]
/usr/lib/x86_64-linux-gnu/libcurl.so.4(curl_multi_perform+0xb4)[0x7fe1c3edb014]
/usr/bin/boinc(+0x9cc14)[0x55a1be305c14]
/usr/bin/boinc(+0x5c535)[0x55a1be2c5535]
/usr/bin/boinc(+0xe8aa)[0x55a1be2778aa]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7fe1c45e81c1]
/usr/bin/boinc(+0xf84a)[0x55a1be27884a]

Exiting...

Indeed, I suspended that job and it still crashes with others.
Log a bit different this time:

No protocol specified
boinc: malloc.c:2903: mremap_chunk: Assertion `((size + offset) & (GLRO (dl_pagesize) - 1)) == 0' failed.
SIGABRT: abort called
Stack trace (17 frames):
/usr/lib/x86_64-linux-gnu/libboinc.so.7(boinc_catch_signal+0x1d8)[0x7f747c7b3b36]
/lib/x86_64-linux-gnu/libc.so.6(+0x37140)[0x7f747ca4c140]
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7f747ca4c0bb]
/lib/x86_64-linux-gnu/libc.so.6(abort+0x16d)[0x7f747ca4df5d]
/lib/x86_64-linux-gnu/libc.so.6(+0x88228)[0x7f747ca9d228]
/lib/x86_64-linux-gnu/libc.so.6(+0x884e3)[0x7f747ca9d4e3]
/lib/x86_64-linux-gnu/libc.so.6(realloc+0xc1)[0x7f747caa4ac1]
/usr/lib/x86_64-linux-gnu/libxcb.so.1(xcb_connect_to_fd+0x21e)[0x7f74798995ae]
/usr/lib/x86_64-linux-gnu/libxcb.so.1(xcb_connect_to_display_with_auth_info+0x409)[0x7f747989d3b9]
/usr/lib/x86_64-linux-gnu/libX11.so.6(_XConnectXCB+0x1aa)[0x7f747bbd18ea]
/usr/lib/x86_64-linux-gnu/libX11.so.6(XOpenDisplay+0xb2)[0x7f747bbc2612]
/usr/bin/boinc(+0x80a75)[0x56145cb1ea75]
/usr/bin/boinc(+0x631d5)[0x56145cb011d5]
/usr/bin/boinc(+0x5b7a2)[0x56145caf97a2]
/usr/bin/boinc(+0xe8aa)[0x56145caac8aa]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1)[0x7f747ca361c1]
/usr/bin/boinc(+0xf84a)[0x56145caad84a]