Basis Errors and Solutions

Symptom

The SAP Gateway crashes frequently. As a result, RFC communication may no longer be possible.
The trace file of the gateway dev_rd repeatedly contains the following C stack (or similar):
C-STACK
[0] GwIsMyHost ( 0xffff6f601278, 0×100f27666, 0×40, 0xffffffffffffffff, 0×70, 0×7 ), at 0×1000f3d90
[1] GwISendConnReq ( 0×1, 0xffffffff7fff586f, 0×2, 0xffffffff7fff576a, 0xffffffff7fff571f, 0xffffffff7fff575c ), at 0x
[2] R3ALLC ( 0×1, 0×100f26fb0, 0xffffffffffffffff, 0×1, 0×1, 0xffffffff7fff586f ), at 0×100134ac0
[3] GwCommunication ( 0×1, 0×0, 0×100f26fb0, 0xffffffffffffffff, 0×4, 0×1 ), at 0×10012e878
[4] GwIHandleRq ( 0×0, 0×0, 0×0, 0×100f26fb0, 0xffffffffffffffff, 0×100f27020 ), at 0×10009fbbc
[5] GwSendToRemGw ( 0×4e1, 0xffffffff7fffeb4c, 0×0, 0xffffffff6dd55510, 0×0, 0×1 ), at 0×10015ec0c
[6] GwIHdlRqFromSapWp ( 0×0, 0×0, 0xffffffff7fffeb4c, 0×4e1, 0×1, 0×0 ), at 0×10015aad4
[7] GwHdlRqFromSapWp ( 0xffffffff7fffe900, 0×1, 0×0, 0xffffffff7fffeb4c, 0×4e1, 0×1 ), at 0×1001595ac
[8] GwReadSapWpRq2 ( 0×0, 0xffffffff7fffeb48, 0×1c, 0×0, 0xffffffff7fffeb44, 0xffffffff7ffff4c0 ), at 0×10016c42c
[9] GwReadSapWpRq ( 0×0, 0×100d89c70, 0×1, 0×0, 0×0, 0×2 ), at 0×10016c258
[10] nlsui_main ( 0×4, 0×100b8e1b0, 0×1a11e8, 0xffffffff7e9085bc, 0xffffffff7df00780, 0xffffffff7df007c0 ), at 0×10008
[11] main ( 0×4, 0xffffffff7ffff6a8, 0xffffffff7ffff6d0, 0xffffffff7e14aea8, 0xffffffff7df00700, 0xffffffff7df00740 ),

Reason and Prerequisites

This error occurs only as of a specific kernel patch level.
7.00: Patch Level 209
6.40: Patch Level 277
This error does not occur in Releases 46D and 7.01.
Solution

This problem is solved by a kernel patch. Apply a kernel patch with the number that is specified under “SP Patch Level” or with a higher number. This will be made available on SAP Service Marketplace in the course of calendar week 27.