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4fda9f0e7c950da4fe03cedeb2ac818edf5d03e9
linux/kernel
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Tejun Heo 4fda9f0e7c sched_ext: Guard scx_dsq_move() against NULL kit->dsq after failed iter_new 
bpf_iter_scx_dsq_new() clears kit->dsq on failure and
bpf_iter_scx_dsq_{next,destroy}() guard against that. scx_dsq_move() doesn't -
it dereferences kit->dsq immediately, so a BPF program that calls
scx_bpf_dsq_move[_vtime]() after a failed iter_new oopses the kernel.

Return false if kit->dsq is NULL.

Fixes: 4c30f5ce4f ("sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq()")
Cc: stable@vger.kernel.org # v6.12+
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
2026-04-24 14:31:35 -10:00
..
bpf
Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-04-15 12:59:16 -07:00
cgroup
Merge tag 'cgroup-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2026-04-15 10:18:49 -07:00
configs
Remove WARN_ALL_UNSEEDED_RANDOM kernel config option
2026-02-23 11:18:48 -08:00
debug
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
dma
dma-debug: suppress cacheline overlap warning when arch has no DMA alignment requirement
2026-03-30 09:41:18 +02:00
entry
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2026-04-14 16:48:56 -07:00
events
Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-04-15 12:59:16 -07:00
futex
Merge tag 'locking-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2026-04-14 12:36:25 -07:00
gcov
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
irq
genirq/chip: Invoke add_interrupt_randomness() in handle_percpu_devid_irq()
2026-04-02 23:03:29 +02:00
kcsan
kcsan: test: Adjust "expect" allocation type for kmalloc_obj
2026-02-26 09:54:08 -08:00
livepatch
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
liveupdate
Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-04-15 12:59:16 -07:00
locking
Merge tag 'sched-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2026-04-14 13:33:36 -07:00
module
module: Simplify warning on positive returns from module_init()
2026-04-04 00:04:48 +00:00
power
Merge branches 'pm-cpuidle', 'pm-opp' and 'pm-sleep'
2026-04-10 12:37:27 +02:00
printk
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
rcu
Merge tag 'rcu.2026.03.31a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
2026-04-13 09:36:45 -07:00
sched
sched_ext: Guard scx_dsq_move() against NULL kit->dsq after failed iter_new
2026-04-24 14:31:35 -10:00
time
Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-04-15 12:59:16 -07:00
trace
Merge tag 'trace-rv-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
2026-04-15 17:15:18 -07:00
unwind
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
.gitignore
…
acct.c
Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2026-04-13 14:20:11 -07:00
async.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
audit_fsnotify.c
audit: widen ino fields to u64
2026-03-06 14:31:26 +01:00
audit_tree.c
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
audit_watch.c
audit: widen ino fields to u64
2026-03-06 14:31:26 +01:00
audit.c
audit: handle unknown status requests in audit_receive_msg()
2026-03-10 15:22:43 -04:00
audit.h
audit: widen ino fields to u64
2026-03-06 14:31:26 +01:00
auditfilter.c
audit: fix coding style issues
2026-03-05 22:16:08 -05:00
auditsc.c
audit: widen ino fields to u64
2026-03-06 14:31:26 +01:00
backtracetest.c
…
bounds.c
x86/asm: Remove ANNOTATE_DATA_SPECIAL usage
2025-12-03 16:53:19 +01:00
capability.c
…
cfi.c
cfi: Move BPF CFI types and helpers to generic code
2025-07-31 18:23:53 -07:00
compat.c
…
configs.c
…
context_tracking.c
context_tracking: Remove rcu_task_trace_heavyweight_{enter,exit}()
2026-01-01 16:39:46 +08:00
cpu_pm.c
syscore: Pass context data to callbacks
2025-11-14 10:01:52 +01:00
cpu.c
Merge tag 'spdx-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx
2026-02-17 09:46:03 -08:00
crash_core_test.c
crash: add KUnit tests for crash_exclude_mem_range
2025-09-13 17:32:55 -07:00
crash_core.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
crash_dump_dm_crypt.c
crash_dump: don't log dm-crypt key bytes in read_key_from_user_keying
2026-03-10 16:01:48 -07:00
crash_reserve.c
crash: let architecture decide crash memory export to iomem_resource
2025-11-12 10:00:15 -08:00
cred.c
cred: remove unused set_security_override_from_ctx()
2026-01-06 20:52:57 -05:00
delayacct.c
delayacct: fix uapi timespec64 definition
2026-02-08 00:13:32 -08:00
dma.c
…
elfcorehdr.c
…
exec_domain.c
…
exit.c
pid_namespace: avoid optimization of accesses to ->child_reaper
2026-03-20 14:44:25 +01:00
exit.h
…
extable.c
…
fail_function.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
fork.c
Merge tag 'sched_ext-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
2026-04-15 10:54:24 -07:00
freezer.c
freezer: Clarify that only cgroup1 freezer uses PM freezer
2025-10-30 20:10:27 +01:00
gen_kheaders.sh
kheaders: make it possible to override TAR
2025-08-06 10:23:36 +09:00
groups.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
hung_task.c
hung_task: add hung_task_sys_info sysctl to dump sys info on task-hung
2025-11-20 14:03:43 -08:00
iomem.c
…
irq_work.c
…
jump_label.c
jump_label: use ATOMIC_INIT() for initialization of .enabled
2026-03-16 13:16:48 +01:00
kallsyms_internal.h
kallsyms: Get rid of kallsyms relative base
2026-01-22 15:58:22 -07:00
kallsyms_selftest.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kallsyms_selftest.h
…
kallsyms.c
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2026-02-12 12:13:01 -08:00
kcmp.c
…
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.kexec
liveupdate: kho: move to kernel/liveupdate
2025-11-27 14:24:33 -08:00
Kconfig.locks
…
Kconfig.preempt
sched: Further restrict the preemption modes
2026-01-08 12:43:57 +01:00
kcov.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kexec_core.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kexec_elf.c
…
kexec_file.c
kexec: derive purgatory entry from symbol
2026-01-31 16:16:07 -08:00
kexec_internal.h
kexec: enable CMA based contiguous allocation
2025-08-02 12:01:38 -07:00
kexec.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
kheaders.c
…
kprobes.c
kprobes: Remove unneeded warnings from __arm_kprobe_ftrace()
2026-03-13 23:15:26 +09:00
kstack_erase.c
sysctl: remove __user qualifier from stack_erasing_sysctl buffer argument
2025-11-27 15:44:53 +01:00
ksyms_common.c
…
ksysfs.c
kernel: ksysfs: initialize kernel_kobj earlier
2026-04-03 19:39:52 +02:00
kthread.c
kthread: consolidate kthread exit paths to prevent use-after-free
2026-02-26 10:45:49 +01:00
latencytop.c
…
Makefile
kcov: Enable context analysis
2026-01-05 16:43:34 +01:00
module_signature.c
module: Give 'enum pkey_id_type' a more specific name
2026-03-24 21:42:37 +00:00
notifier.c
…
nscommon.c
nsfs: tighten permission checks for ns iteration ioctls
2026-02-27 22:00:08 +01:00
nsproxy.c
Merge tag 'vfs-7.1-rc1.mount.v2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2026-04-14 19:59:25 -07:00
nstree.c
nstree: tighten permission checks for listing
2026-02-27 22:00:11 +01:00
padata.c
padata: Put CPU offline callback in ONLINE section to allow failure
2026-03-22 11:17:59 +09:00
panic.c
panic: add panic_force_cpu= parameter to redirect panic to a specific CPU
2026-02-03 08:21:26 -08:00
params.c
module: Clean up parse_args() arguments
2026-03-18 21:43:18 +00:00
pid_namespace.c
pid_namespace: allow opening pid_for_children before init was created
2026-03-20 14:44:26 +01:00
pid_sysctl.h
…
pid.c
pid: check init is created first after idr alloc
2026-03-20 14:44:26 +01:00
profile.c
…
ptrace.c
clone: add CLONE_AUTOREAP
2026-03-11 23:14:02 +01:00
range.c
…
reboot.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
regset.c
…
relay.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
resource_kunit.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
resource.c
PCI: Align head space better
2026-03-27 10:19:08 -05:00
rseq.c
rseq: slice ext: Ensure rseq feature size differs from original rseq size
2026-02-23 11:19:19 +01:00
scftorture.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
scs.c
scs: fix a wrong parameter in __scs_magic
2025-11-12 10:00:13 -08:00
seccomp.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
signal.c
Merge tag 'kernel-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2026-04-14 20:28:40 -07:00
smp.c
smp: Use system_percpu_wq instead of system_wq
2026-03-26 17:31:35 +01:00
smpboot.c
…
smpboot.h
…
softirq.c
softirq: Prepare for deferred hrtimer rearming
2026-02-27 16:40:13 +01:00
stacktrace.c
…
static_call_inline.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
static_call.c
…
stop_machine.c
…
sys_ni.c
rseq: Implement sys_rseq_slice_yield()
2026-01-22 11:11:17 +01:00
sys.c
prctl: cfi: change the branch landing pad prctl()s to be more descriptive
2026-04-04 18:40:58 -06:00
sysctl-test.c
…
sysctl.c
sysctl: fix uninitialized variable in proc_do_large_bitmap
2026-03-26 09:32:19 +01:00
task_work.c
task_work: Fix NMI race condition
2025-10-29 10:29:54 +01:00
taskstats.c
…
torture.c
torture: Avoid modulo-zero error in torture_hrtimeout_ns()
2026-03-30 15:48:14 -04:00
tracepoint.c
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
tsacct.c
tsacct: skip all kernel threads
2026-01-26 19:07:13 -08:00
ucount.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
uid16.c
…
uid16.h
…
umh.c
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
up.c
…
user_namespace.c
Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses
2026-02-22 08:26:33 -08:00
user-return-notifier.c
…
user.c
ns: drop custom reference count initialization for initial namespaces
2025-11-11 10:01:32 +01:00
utsname_sysctl.c
…
utsname.c
Merge tag 'namespace-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
2025-09-29 11:20:29 -07:00
vhost_task.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
vmcore_info.c
mm: rename the 'compound_head' field in the 'struct page' to 'compound_info'
2026-04-05 13:53:08 -07:00
watch_queue.c
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
watchdog_buddy.c
watchdog: fix opencoded cpumask_next_wrap() in watchdog_next_cpu()
2025-07-31 11:28:03 -04:00
watchdog_perf.c
watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency
2026-02-08 00:13:35 -08:00
watchdog.c
watchdog/softlockup: fix sample ring index wrap in need_counting_irqs()
2026-02-08 00:13:34 -08:00
workqueue_internal.h
workqueue: Show in-flight work item duration in stall diagnostics
2026-03-05 07:27:48 -10:00
workqueue.c
Merge tag 'wq-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
2026-04-15 10:32:08 -07:00