3379182 - LNX: system hang with call "__GI___open64" on top of C-stack

SAP application server gets hang intermittently.

Stack trace dumped into work process traces shows it is stuck in while accessing the security storage file.

M  ------------------ C-STACK ----------------------
dw.sapABC_D00[S](LinStackBacktrace+0xa9)[0x555bb49396c4,0x7b66c4]
dw.sapABC_D00[S](LinStack+0x4d)[0x555bb493c6ba,0x7b96ba]
dw.sapABC_D00[S](CTrcStack2+0x4b)[0x555bb4938466,0x7b5466]
dw.sapABC_D00[S](ThStackHandler()+0x2f5)[0x555bb47b3d03,0x630d03]
dw.sapABC_D00[S](DpTrcOnOff(int)+0x32b)[0x555bb472b8eb,0x5a88eb]
<signal handler called> [0x7f8c3836f630,0xf630]
libc.so.6[S](__GI___open64+0x2d)[0x7f8c3808191d,0xef91d]
libc.so.6[S](__GI__IO_file_fopen+0xd0)[0x7f8c3800d520,0x7b520]
libc.so.6[S](__fopen_internal+0x74)[0x7f8c38000ca4,0x6eca4]
dw.sapABC_D00[S](fopenU16+0xc5)[0x555bb6b55f15,0x29d2f15]
dw.sapABC_D00[S](rsecssfs_FileOpen+0x7b)[0x555bb60240a9,0x1ea10a9]
dw.sapABC_D00[S](RSecSSFsListRecords+0x9e)[0x555bb6029daa,0x1ea6daa]
dw.sapABC_D00[S](rsecxdb__FillSecStoreFsBuffer+0xb1)[0x555bb6b73921,0x29f0921]
dw.sapABC_D00[S](rsecxdb__GetKey+0xdf)[0x555bb6b7492f,0x29f192f]
dw.sapABC_D00[S](rsecxdb__read_and_migrate+0x19b)[0x555bb6b7514b,0x29f214b]
dw.sapABC_D00[S](RSecDReadItemEx+0xbf)[0x555bb6b75e5f,0x29f2e5f]
dw.sapABC_D00[S](LocFunc_ReadKeyFromDB.constprop.0+0x86)[0x555bb6b69886,0x29e6886]

<snipped>

M  ------------------ c-stack end ------------------

Other possible stack trace

# buildID: cfb059a57e69ac95d5dadab831626b3bd48a4309
libc.so.6;0x1071e4;[S](__GI___read+0x46)[0x7f1b76ecb1e4]
libc.so.6;0x92bb8;[S](__GI__IO_file_seekoff+0x2da)[0x7f1b76e56bb8]
libc.so.6;0x8ee0d;[S](__GI_fseek+0x6f)[0x7f1b76e52e0d]
# buildID: ac8693faf01d24c193d77130db7428cd670f4590
dw.sapABC_D00;0x205bfb8;[S](PfSearchETimeWithIndex(char16_t const*, char16_t*, STATREC*, unsigned int*) [clone .cold]+0xfc)[0x55e562089fb8]
dw.sapABC_D00;0x37cb4bf;[S](PfReadStatRec(char16_t const*, PF_READ_MODE, PF_READ_MODE_PAR*, STATREC*, unsigned int*, PF_HYPIND*, PF_ABAP_INFO*)+0x4ef)[0x55e5637f94bf]
dw.sapABC_D00;0x37cedb6;[S](PfCall+0x7d6)[0x55e5637fcdb6]

# buildID: cfb059a57e69ac95d5dadab831626b3bd48a4309
libc.so.6;0x106555;[S](_xstat+0x17)[0x7f1b76eca555]
# buildID: ac8693faf01d24c193d77130db7428cd670f4590
dw.sapABC_D00;0x3452438;[S](statU16(char16_t const*, stat*)+0x68)[0x55e563480438]
dw.sapABC_D00;0x34523b7;[S](DpFileSize+0x17)[0x55e5634803b7]

• SAP system on Linux server
• NFS share

__GI___open64, __GI__IO_file_fopen, __fopen_internal, fopen, __GI___read, __GI__IO_file_seekoff, __GI_fseek, statU16, hang, stuck , KBA , BC-OP-LNX , Linux , BC-CST , Client/Server Technology , Problem