https://github.com/torvalds/linux
Revision 9a5c107f0c42eb7db6d70d12c8852ef6a8838a1e authored by Mike Christie on 19 December 2017, 10:03:54 UTC, committed by Bryant G. Ly on 28 February 2018, 18:55:59 UTC
We will always have a page mapped for cmd data if it is valid command. If the mapping does not exist then something bad happened in userspace and it should not proceed. This has us return VM_FAULT_SIGBUS when this happens instead of returning a freshly allocated paged. The latter can cause corruption because userspace might write the pages data overwriting valid data or return it to the initiator. Signed-off-by: Mike Christie <mchristi@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
1 parent bab81c3
Tip revision: 9a5c107f0c42eb7db6d70d12c8852ef6a8838a1e authored by Mike Christie on 19 December 2017, 10:03:54 UTC
tcmu: prevent corruption when invalid data page requested
tcmu: prevent corruption when invalid data page requested
Tip revision: 9a5c107
| File | Mode | Size |
|---|---|---|
| bpf | ||
| cgroup | ||
| configs | ||
| debug | ||
| events | ||
| gcov | ||
| irq | ||
| livepatch | ||
| locking | ||
| power | ||
| printk | ||
| rcu | ||
| sched | ||
| time | ||
| trace | ||
| .gitignore | -rw-r--r-- | 69 bytes |
| Kconfig.freezer | -rw-r--r-- | 52 bytes |
| Kconfig.hz | -rw-r--r-- | 1.6 KB |
| Kconfig.locks | -rw-r--r-- | 4.8 KB |
| Kconfig.preempt | -rw-r--r-- | 2.1 KB |
| Makefile | -rw-r--r-- | 4.0 KB |
| acct.c | -rw-r--r-- | 15.4 KB |
| async.c | -rw-r--r-- | 9.9 KB |
| audit.c | -rw-r--r-- | 61.6 KB |
| audit.h | -rw-r--r-- | 11.0 KB |
| audit_fsnotify.c | -rw-r--r-- | 6.1 KB |
| audit_tree.c | -rw-r--r-- | 23.9 KB |
| audit_watch.c | -rw-r--r-- | 14.6 KB |
| auditfilter.c | -rw-r--r-- | 34.3 KB |
| auditsc.c | -rw-r--r-- | 66.0 KB |
| backtracetest.c | -rw-r--r-- | 2.1 KB |
| bounds.c | -rw-r--r-- | 739 bytes |
| capability.c | -rw-r--r-- | 13.9 KB |
| compat.c | -rw-r--r-- | 15.7 KB |
| configs.c | -rw-r--r-- | 2.8 KB |
| context_tracking.c | -rw-r--r-- | 6.3 KB |
| cpu.c | -rw-r--r-- | 48.1 KB |
| cpu_pm.c | -rw-r--r-- | 6.0 KB |
| crash_core.c | -rw-r--r-- | 11.3 KB |
| crash_dump.c | -rw-r--r-- | 1.3 KB |
| cred.c | -rw-r--r-- | 22.1 KB |
| delayacct.c | -rw-r--r-- | 4.6 KB |
| dma.c | -rw-r--r-- | 3.6 KB |
| elfcore.c | -rw-r--r-- | 432 bytes |
| exec_domain.c | -rw-r--r-- | 1.4 KB |
| exit.c | -rw-r--r-- | 44.3 KB |
| extable.c | -rw-r--r-- | 4.8 KB |
| fork.c | -rw-r--r-- | 59.4 KB |
| freezer.c | -rw-r--r-- | 4.4 KB |
| futex.c | -rw-r--r-- | 97.7 KB |
| futex_compat.c | -rw-r--r-- | 4.5 KB |
| groups.c | -rw-r--r-- | 4.9 KB |
| hung_task.c | -rw-r--r-- | 6.2 KB |
| irq_work.c | -rw-r--r-- | 4.4 KB |
| jump_label.c | -rw-r--r-- | 19.3 KB |
| kallsyms.c | -rw-r--r-- | 18.0 KB |
| kcmp.c | -rw-r--r-- | 5.7 KB |
| kcov.c | -rw-r--r-- | 10.5 KB |
| kexec.c | -rw-r--r-- | 7.2 KB |
| kexec_core.c | -rw-r--r-- | 30.8 KB |
| kexec_file.c | -rw-r--r-- | 25.7 KB |
| kexec_internal.h | -rw-r--r-- | 924 bytes |
| kmod.c | -rw-r--r-- | 5.0 KB |
| kprobes.c | -rw-r--r-- | 62.8 KB |
| ksysfs.c | -rw-r--r-- | 6.3 KB |
| kthread.c | -rw-r--r-- | 33.7 KB |
| latencytop.c | -rw-r--r-- | 7.9 KB |
| memremap.c | -rw-r--r-- | 15.0 KB |
| module-internal.h | -rw-r--r-- | 458 bytes |
| module.c | -rw-r--r-- | 111.5 KB |
| module_signing.c | -rw-r--r-- | 2.2 KB |
| notifier.c | -rw-r--r-- | 16.3 KB |
| nsproxy.c | -rw-r--r-- | 6.5 KB |
| padata.c | -rw-r--r-- | 27.1 KB |
| panic.c | -rw-r--r-- | 17.0 KB |
| params.c | -rw-r--r-- | 23.5 KB |
| pid.c | -rw-r--r-- | 10.7 KB |
| pid_namespace.c | -rw-r--r-- | 11.6 KB |
| profile.c | -rw-r--r-- | 14.8 KB |
| ptrace.c | -rw-r--r-- | 32.6 KB |
| range.c | -rw-r--r-- | 3.0 KB |
| reboot.c | -rw-r--r-- | 13.8 KB |
| relay.c | -rw-r--r-- | 32.1 KB |
| resource.c | -rw-r--r-- | 39.8 KB |
| seccomp.c | -rw-r--r-- | 31.4 KB |
| signal.c | -rw-r--r-- | 95.8 KB |
| smp.c | -rw-r--r-- | 21.3 KB |
| smpboot.c | -rw-r--r-- | 13.1 KB |
| smpboot.h | -rw-r--r-- | 640 bytes |
| softirq.c | -rw-r--r-- | 18.8 KB |
| stacktrace.c | -rw-r--r-- | 1.8 KB |
| stop_machine.c | -rw-r--r-- | 17.1 KB |
| sys.c | -rw-r--r-- | 61.0 KB |
| sys_ni.c | -rw-r--r-- | 7.3 KB |
| sysctl.c | -rw-r--r-- | 74.4 KB |
| sysctl_binary.c | -rw-r--r-- | 51.0 KB |
| task_work.c | -rw-r--r-- | 3.2 KB |
| taskstats.c | -rw-r--r-- | 15.4 KB |
| test_kprobes.c | -rw-r--r-- | 7.9 KB |
| torture.c | -rw-r--r-- | 21.0 KB |
| tracepoint.c | -rw-r--r-- | 14.6 KB |
| tsacct.c | -rw-r--r-- | 5.1 KB |
| ucount.c | -rw-r--r-- | 5.7 KB |
| uid16.c | -rw-r--r-- | 5.0 KB |
| umh.c | -rw-r--r-- | 15.2 KB |
| up.c | -rw-r--r-- | 2.0 KB |
| user-return-notifier.c | -rw-r--r-- | 1.3 KB |
| user.c | -rw-r--r-- | 5.4 KB |
| user_namespace.c | -rw-r--r-- | 33.5 KB |
| utsname.c | -rw-r--r-- | 3.6 KB |
| utsname_sysctl.c | -rw-r--r-- | 3.0 KB |
| watchdog.c | -rw-r--r-- | 21.7 KB |
| watchdog_hld.c | -rw-r--r-- | 7.7 KB |
| workqueue.c | -rw-r--r-- | 156.0 KB |
| workqueue_internal.h | -rw-r--r-- | 2.3 KB |
Computing file changes ...
