This bug was fixed in the package stress-ng - 0.12.00-1
---------------
stress-ng (0.12.00-1) unstable; urgency=medium
* Makefile: bump version
* stress-epoll: fix sanity check for an unexpected epoll_ctl success
* stress-funccall: disable ALWAYS_INLINE for PCC
* stress-inotify: add void argument, fixes pcc build warning
* stress-epoll: fix pcc build warning
* stress-close: add invalid flags call to close_range
* core-shim: add flags field to close_range shim to match 5.10
system call
* stress-utime: voidify return using assignment and voidification
* stress-stack: reduce scope of variable ret
* stress-sock: clean up some cppcheck warnings
* stress-mlock: put HAVE_MLOCKALL into a statement block
* stress-affinity: add in missing voidification of ret
* stress-brk: remove redundant return 0 statement
* stress-pkey: limit pkey system call warning to just instance 0
* core-helper: don't use getpwent for static stress-ng builds:
* stress-stack: rename sz to mlock_sz to avoid variable shadowing
* stress-pthread: remove duplicate declaration of ret to clean up
build warning
* stress-msg: rename variable i to j to avoid name shadowing warning
* stress-prctl: remove redundant declaration of environ
* stress-msg: clean up variable shadowing
* stress-yield: workaround FreeBSD usleep bug
* stress-timer: workaround duplicated timer_delete segfault in FreeBSD
* stress-ng.h: make shim_unconstify_ptr a static inline helper
* stress-link: cast getpid() return to int for %d format specifier
* stress-open: only declare obsolete_futimesat when it is required
* stress-mmap: voidify page_size if HAVE_MPROTECT is not defined
* stress-access: declare variable j only if HAVE_FACCESSAT is defined
* stress-sem-sysv: silently ignore failures on semctl commands
* stress-sem-sysv: ensure 4th arg of semctl is zero when not used
* stress-sem-sysv: fix zero semaphores case in GETALL semctl
* stress-brk: don't exercise mlockall with MCL_FUTURE if it is not
defined
* Fix clobbering of errno by error message logging before reading errno
* stress-sem-sysv: move scope of array sems
* stress-poll: make tv_nsec out of range value a 32 bit value
* stress-mmap: only use PROT_GROWSUP and PROT_GROWSDOWN if supported
* Fix ~0ULL cast to void * build warnings on 32 bit builds
* kernel-coverage: add --pathological for sysinval stress
* syscalls: update work to do and recent changes
* stress-vm-splice: add pipe to memory vmsplicing
* stress-utime: exercise utime family of calls with invalid filenames
* stress-sysinfo: fix build issues introduced by previous commit
* stress-sysinfo: exercise ustat with invalid major/minor
* stress-userfaultfd: exercise UFFDIO_WAKE
* stress-ramfs: exercise umount with some invalid pathnames
* stress-binderfs: exercise invalid umount calls
* stress-hdd: exercise invalid ftruncate/truncate fd/filename
* stress-hdd: exercise invalid ftruncate/truncate size
* stress-timer: exercise duplicated timer_delete
* stress-pthread: add tkill to shim and exercise it
* stress-pthread: add tgkill to shim and exercise it
* stress-sync-file: exercise 0 nbytes sync, it has special semantics
* stress-swap: exercise swapon with invalid path
* stress-sysinfo: exercise invalid statfs path
* stress-fstat: exercise stat, lstat on invalid path
* stress-splice: exercise splice with some more invalid or untested
arguments
* stress-bad-altstack: exercise sigaltstack with various stack settings
* core-helper: fix comment, min stack size can be MINSIGSTKSZ
* stress-sysinval: only allow with --pathological option (LP: #1906447)
* stress-shm-sysv: exercise duplicated shmdt on unmapped addresses
* stress-shm-sysv: define MPOL_* only if required, add one more
shmctl call
* stress-xattr: exercise invalid setxattr arguments
* stress-set: add timezone argument to get more kernel coverage
* stress-nice: fix priority ranges, use correct offset in priority
* stress-set: exercise invalid pid and pgid in setpgid call
* stress-clone: exercise setns with invalid nstype and fd
* stress-set: exercise sethostname with illegal length host
* stress-set: exercise a range of setgroups calls
* stress-set: exercise setdomainname with invalid name length
* stress-pthread: exercise set_tid_address with NULL address
* stress-pthread: exercise set_robust_list with invalid length
* stress-numa: add in a mix of various set_mempolicy calls
* stress-sendfile: add more kernel coverage tests
* stress-sendfile: periodically exercise sendfile with invalid arguments
* core-helper: find bad_fd in reverse fd order if RLIMIT not supported
* stress-sem-sysv: disable SETALL and exercise long run of semops
* stress-sem-sysv: exercise semctl with various invalid arguments
* stress-sem-sysv: add SIGCHLD handler to ensure pause() gets
interrupted
* stress-schedpolicy: exercise sched_setscheduler with invalid arguments
* stress-affinity: exercise sched_{get|set}affinity with invalid
arguments
* stress-schedpolicy: exercise sched_getscheduler with bad pid
* stress-schedpolicy: exercise sched_{get|set}param with invalid
arguments
* stress-schedpolicy: exercise sched_getattr with invalid arguments
* kernel-coverage: exercise sysinval for longer
* stress-dir: exercise various invalid pathnames for rmdir and add
comments
* stress-xattr: exercise ENOENT error on removexattr calls
* stress-remap-file-pages: exercised locked mremap and invalid mremap
arguments
* kernel-coverage: remove trailing whitespace
* Revert "stress-file-ioctl: enable FIFREEZE and FITHAW file ioctls"
* kernel-coverage: add mremap --mremap-mlock option to add to coverage
testing
* stress-sock: exercise various invalid recv, recv, recvmmsg calls
* stress-reboot: update magic values, add two clearly invalid cmds too
* stress-link: exercise invalid readlinkat calls
* stress-link: exercise invalid readlink calls, remove redundant
cleanup
* stress-readahead: exercise invalid fd and range of readahead sizes
* stress-readahead: improve I/O speed and reduce setup time
* stress-vm-rw: exercise process_vm_{read|write}v with invalid arguments
* stress-prctl: exercise prctl PR_SET_MM_AUXV and PR_GET_TIMERSLACK more
* stress-poll: add some invalid arg tests for ppoll
* stress-cpu: correct the Ackermann count now we are doing calls
* stress-cpu: modify number of iterations to improve cpu instruction mix
* stress-pkey: exercise pkey system calls a little harder
* stress-pipe: add FIONREAD ioctl build time detection
* stress-pipe: exercise the FIONREAD ioctl on pipe read end
* stress-pidfd: exercise pidfd_open with invalid pid
* stress-handle: exercise name_to_handle_at and open_by_handle_at
further
* stress-mmap: exercise munmap with two invalid unmap calls
* stress-msync: exercise some invalid msync calls
* stress-msg: add some unusual msgsnd arguments to exercise kernel
* stress-msg: exercise msgget a little more, create many message queues
* stress-msg: exercise msgctl with invalid msqid and commands
* stress-mremap: add --mremap-mlock option to mlock pages into memory
* stress-mmap: remove some empty lines
* stress-clone: remove whitespace
* stress-mremap: exercise MREMAP_DONTUNMAP on a remap
* stress-mq: exercise fstat and mmap on mq descriptor
* stress-mq: exercise mq_close and mq_unlink with invalid arguments
* stress-mq: exercise mq_notify with SIGEV_NONE and invalid notify
notifications
* stress-mq: exercise mq_getattr with invalid mq and exercise mq_setattr
* stress-mmap: add some extra illegal mprotect calls
* stress-numa: exercise move_pages with various valid and invalid
arguments
* stress-clone: exercise modify_ldt with extra command types
* stress-get: disable gettimeofday with NULL args (LP: #1905205)
* kernel-coverage: add two stack stressor options
* stress-stack: add --stack-mlock option to lock stack pages into memory
* stress-mlock: exercise mlock/munlock with invalid or unusual arguments
* stress-mknod: exercise mknod S_IFDIR
* stress-dir: exercise illegal length directory name
* stress-numa: exercise migrate_pages with invalid arguments
* stress-memfd: exercise memfd_create with illegal arguments and more
flags
* stress-membarrer: exercise illegal command and flags
* stress-numa: exercise mbind with various illegal arguments
* stress-madvise: exercise invalid madvise arguments
* stress-seek: add SEEK_HOLE/DATA walkthrough
* stress-link: exercise illegal cross-device hard links
* stress-keyctl: exercise more keyctl commands
* stress-file-ioctl: remove whitespace
* stress-ioprio: exercise IOPRIO_WHO_{PGRP|USER} for invalid set/get
* stress-ioprio: exercise some invalid set/get arguments
* stress-ioport: add iopl test and exercise io calls with invalid args
* stress-klog: add .supported check before running
* stress-klog: inform use when klog can't be accessed because of
permission reasons
* stress-file-ioctl: exercise SEEK_CUR, SEEK_END on FS_IOC_UNRESVSP*
ioctls
* stress-file-ioctl: exercise invalid block range for FIBMAP ioctl
* stress-file-ioctl: force ENOMEM with invalid dest_count with
FIDEDUPERANGE ioctl
* stress-aio-linux: fix errno checking and exercise aio POLLing
* stress-aio-linux: make FSYNC/FDSYNC commands occur more frequently
* stress-aio-linux: use direct system calls and just cancel one async op
* stress-get: use NULL args for gettimeofday, update comments
* stress-getrandom: exercise GRND_NONBLOCK | GRND_INSECURE and illegal
flags
* stress-open: voidify unused arguments to obsolete function helpers
* stress-sock: exercise illegal getsockname calls
* stress-open: exercise obsolete futimes and futimesat calls
* stress-access: fix AT_EMPTY_PATH check
* stress-itimer: exercise getitimer on all the itimers
* stress-get: exercise getgroups with zero and invalid gid size argument
* stress-getdent: exercise getdents with illegal zero size
* stress-pthread: exercise get_robust_list with invalid PID
* stress-numa: exercise get_mempolicy with invalid maxnodes argument
* stress-hdd: exercise futimes with invalid times
* kernel-coverage: exercise noatime and syncfs hdd options
* stress-flock: add periodic /proc/locks exercising
* stress-flock: exercise illegal lock command combination
* stress-flock: exercise LOCK_MAND with LOCK_READ, LOCK_WRITE
* stress-access: avoid name shadowing by renaming array flags
* TODO: add xattr todo item
* stress-xattr: add more invalid attribute strings and sizes
* stress-sync-file: exercise sync_file_range with more illegal arguments
* stress-iomix: add illegal fdatasync call for more kernel exercising
* stress-fcntl: reset default signal using F_SETSIG with 0 arg
* stress-epoll: exercise epoll_ctl_add with an illegal fd, clean up
some errors
* stress-chroot: voidify unused args parameter in non-linux builds
* stress-chroot: don't exercise EFAULT check on non-linux systems
* stress-chmod: exercise illegal filenames
* stress-chdir: exercise some invalid chdir and fchdir calls
* stress-cap: add macro define checks to ensure code is always buildable
* stress-cap: exercise capget with different capability versions and
invalid pid
* stress-brk: add --brk-mlock option to mlock future brk pages into
memory
* stress-open: exercise new openat2 system call
* stress-access: try to use faccessat2 for faccessat
-- Colin King <colin.k...@canonical.com> Thu, 3 Dec 2020 11:07:41
+0000
** Changed in: stress-ng (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1906447
Title:
init_module may pin a lot of memory if given a bogus size
Status in linux package in Ubuntu:
Incomplete
Status in stress-ng package in Ubuntu:
Fix Released
Bug description:
When running stress-ng sysinval stressor, I got a panic from an
unrecoverable OOM.
This happens because stress-ng will call init_module with a module
length of INT_MAX and that will allocate that much memory with
vmalloc, which is not accountable for the process. This memory is
freed by using vfree right after that, but when you run 4 to 8
stressors on a VM with ~8GiB of RAM, that might trigger OOM and there
will be no way to recover, causing a panic.
Using __GFP_RETRY_MAYFAIL for both init_module and kernel_read_file
(called by finit_module), alleviates the problem, but does not solve
it, as other allocators will trigger OOM.
Module loading is an operation that is considered trusted, so it will
be hard to do many changes in that path, so we might consider not
stressing the system like that in our testing.
Cascardo.
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