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679fcae46c
linux/drivers/target/iscsi
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Laura Abbott 679fcae46c scsi: iscsi: target: Don't use stack buffer for scatterlist 
Fedora got a bug report of a crash with iSCSI:

kernel BUG at include/linux/scatterlist.h:143!
...
RIP: 0010:iscsit_do_crypto_hash_buf+0x154/0x180 [iscsi_target_mod]
...
 Call Trace:
  ? iscsi_target_tx_thread+0x200/0x200 [iscsi_target_mod]
  iscsit_get_rx_pdu+0x4cd/0xa90 [iscsi_target_mod]
  ? native_sched_clock+0x3e/0xa0
  ? iscsi_target_tx_thread+0x200/0x200 [iscsi_target_mod]
  iscsi_target_rx_thread+0x81/0xf0 [iscsi_target_mod]
  kthread+0x120/0x140
  ? kthread_create_worker_on_cpu+0x70/0x70
  ret_from_fork+0x3a/0x50

This is a BUG_ON for using a stack buffer with a scatterlist.  There
are two cases that trigger this bug. Switch to using a dynamically
allocated buffer for one case and do not assign a NULL buffer in
another case.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-09-11 20:47:08 -04:00
..
cxgbit scsi: target: iscsi: cxgbit: use pr_debug() instead of pr_info() 2018-08-27 12:26:10 -04:00
iscsi_target_auth.c target/iscsi: avoid NULL dereference in CHAP auth error path 2018-01-12 15:07:27 -08:00
iscsi_target_auth.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_configfs.c Revert "scsi: target/iscsi: Reduce number of __iscsit_free_cmd() callers" 2018-07-30 23:30:51 -04:00
iscsi_target_datain_values.c target: Minimize #include directives 2016-12-09 10:22:28 -08:00
iscsi_target_datain_values.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_device.c target: Fix max_cmd_sn increment w/o cmdsn mutex regressions 2015-09-11 00:32:28 -07:00
iscsi_target_device.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_erl1.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2017-11-24 19:19:20 -10:00
iscsi_target_erl1.h Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:56:58 -08:00
iscsi_target_erl2.c target/iscsi: Fix spelling of "reallegiance" 2017-02-09 00:39:08 -08:00
iscsi_target_erl2.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_erl0.c target/iscsi: Convert timers to use timer_setup() 2017-11-01 11:44:50 -07:00
iscsi_target_erl0.h Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:56:58 -08:00
iscsi_target_login.c scsi: iscsi: target: Fix conn_ops double free 2018-08-30 07:07:12 -04:00
iscsi_target_login.h scsi: iscsi: target: Fix conn_ops double free 2018-08-30 07:07:12 -04:00
iscsi_target_nego.c iscsi-target: make sure to wake up sleeping login worker 2018-01-23 23:03:54 -08:00
iscsi_target_nego.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_nodeattrib.c iscsi-target: Move iscsi_target_[core,stat].h under linux include 2015-01-30 13:06:21 -08:00
iscsi_target_nodeattrib.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_parameters.c iSCSI-target: Use common error handling code in iscsi_decode_text_input() 2017-11-04 15:17:49 -07:00
iscsi_target_parameters.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_seq_pdu_list.c target/iscsi: Define OFFLOAD_BUF_SIZE once 2017-11-04 15:15:46 -07:00
iscsi_target_seq_pdu_list.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_stat.c target: make config_item_type const 2017-10-19 16:15:17 +02:00
iscsi_target_tmr.c target/iscsi: Fix spelling of "reallegiance" 2017-02-09 00:39:08 -08:00
iscsi_target_tmr.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_tpg.c scsi: target/iscsi: Make iscsit_ta_authentication() respect the output buffer size 2018-07-02 16:44:31 -04:00
iscsi_target_tpg.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_transport.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iscsi_target_util.c scsi: iscsi target: have iscsit_start_nopin_timer call __iscsit_start_nopin_timer 2018-08-02 15:29:31 -04:00
iscsi_target_util.h Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:56:58 -08:00
iscsi_target.c scsi: iscsi: target: Don't use stack buffer for scatterlist 2018-09-11 20:47:08 -04:00
iscsi_target.h target/iscsi: Allocate session IDs from an IDA 2018-08-21 23:54:19 -04:00
Kconfig cxgbit: add files for cxgbit.ko 2016-05-09 23:12:54 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00