Shakeel Butt 777a8560fd lib/buildid: use __kernel_read() for sleepable context ... Prevent a "BUG: unable to handle kernel NULL pointer dereference in filemap_read_folio". For the sleepable context, convert freader to use __kernel_read() instead of direct page cache access via read_cache_folio(). This simplifies the faultable code path by using the standard kernel file reading interface which handles all the complexity of reading file data. At the moment we are not changing the code for non-sleepable context which uses filemap_get_folio() and only succeeds if the target folios are already in memory and up-to-date. The reason is to keep the patch simple and easier to backport to stable kernels. Syzbot repro does not crash the kernel anymore and the selftests run successfully. In the follow up we will make __kernel_read() with IOCB_NOWAIT work for non-sleepable contexts. In addition, I would like to replace the secretmem check with a more generic approach and will add fstest for the buildid code. Link: https://lkml.kernel.org/r/20251222205859.3968077-1-shakeel.butt@linux.dev Fixes: ad41251c29 ("lib/buildid: implement sleepable build_id_parse() API") Reported-by: syzbot+09b7d050e4806540153d@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=09b7d050e4806540153d Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Jinchao Wang <wangjinchao600@gmail.com> Link: https://lkml.kernel.org/r/aUteBPWPYzVWIZFH@ndev Reviewed-by: Christian Brauner <brauner@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Daniel Borkman <daniel@iogearbox.net> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2026-01-14 22:16:21 -08:00
..
842	…
crc	lib/crc: Switch ARM and arm64 to 'ksimd' scoped guard API	2025-11-12 09:52:01 +01:00
crypto	lib/crypto: aes: Fix missing MMU protection for AES S-box	2026-01-08 11:14:59 -08:00
dim	…
fonts	lib/fonts: Add Terminus 10x18 console font	2025-12-02 19:57:01 +01:00
kunit	kunit: make FAULT_TEST default to n when PANIC_ON_OOPS	2025-12-15 09:27:19 -07:00
lz4	…
lzo	…
math	lib: test_mul_u64_u64_div_u64(): test the 32bit code on 64bit	2025-11-20 14:03:42 -08:00
pldmfw	…
raid6	First set of RISC-V updates for v6.19-rc1	2025-12-05 16:26:57 -08:00
reed_solomon	treewide: Update email address	2026-01-11 06:09:11 -10:00
test_fortify	…
tests	Significant patch series in this pull request:	2025-12-06 14:01:20 -08:00
vdso	…
xz	lib/xz: remove dead IA-64 (Itanium) support code	2025-11-12 10:00:15 -08:00
zlib_deflate	…
zlib_dfltcc	…
zlib_inflate	…
zstd	…
.gitignore	…
Kconfig	standalone cache drivers for v6.19	2025-11-27 23:00:45 +01:00
Kconfig.debug	Significant patch series in this pull request:	2025-12-06 14:01:20 -08:00
Kconfig.kasan	…
Kconfig.kcsan	…
Kconfig.kfence	…
Kconfig.kgdb	…
Kconfig.kmsan	KMSAN: Restore dynamic check for '-fsanitize=kernel-memory'	2025-10-27 16:22:02 -07:00
Kconfig.ubsan	…
Makefile	standalone cache drivers for v6.19	2025-11-27 23:00:45 +01:00
alloc_tag.c	lib/alloc_tag: use %pe format specifier	2025-11-20 13:43:57 -08:00
argv_split.c	…
ashldi3.c	…
ashrdi3.c	…
asn1_decoder.c	…
asn1_encoder.c	…
assoc_array.c	…
atomic64.c	…
atomic64_test.c	…
audit.c	…
base64.c	lib/base64: rework encode/decode for speed and stricter validation	2025-11-20 14:03:44 -08:00
bcd.c	…
bch.c	…
bitmap-str.c	…
bitmap.c	cpumask: Introduce cpumask_weighted_or()	2025-11-20 12:14:54 +01:00
bitrev.c	…
bootconfig-data.S	…
bootconfig.c	…
bsearch.c	…
btree.c	…
bucket_locks.c	…
bug.c	bug: Hush suggest-attribute=format for __warn_printf()	2025-12-12 10:26:26 +01:00
build_OID_registry	…
buildid.c	lib/buildid: use __kernel_read() for sleepable context	2026-01-14 22:16:21 -08:00
bust_spinlocks.c	…
cache_maint.c	lib: Support ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION	2025-11-21 18:42:01 +00:00
check_signature.c	…
checksum.c	…
closure.c	…
clz_ctz.c	…
clz_tab.c	…
cmdline.c	…
cmpdi2.c	…
cmpxchg-emu.c	…
codetag.c	…
compat_audit.c	…
cpu_rmap.c	…
cpumask.c	…
ctype.c	…
debug_info.c	…
debug_locks.c	…
debugobjects.c	treewide: Update email address	2026-01-11 06:09:11 -10:00
dec_and_lock.c	…
decompress.c	…
decompress_bunzip2.c	…
decompress_inflate.c	…
decompress_unlz4.c	…
decompress_unlzma.c	…
decompress_unlzo.c	…
decompress_unxz.c	…
decompress_unzstd.c	…
devmem_is_allowed.c	…
devres.c	…
dhry.h	…
dhry_1.c	…
dhry_2.c	…
dhry_run.c	…
digsig.c	integrity-v6.18	2025-10-05 10:48:33 -07:00
dump_stack.c	…
dynamic_debug.c	dynamic_debug: add support for print stack	2025-11-12 10:00:16 -08:00
dynamic_queue_limits.c	…
earlycpio.c	…
errname.c	…
error-inject.c	…
errseq.c	…
extable.c	…
fault-inject-usercopy.c	…
fault-inject.c	…
fdt.c	…
fdt_addresses.c	…
fdt_empty_tree.c	…
fdt_ro.c	…
fdt_rw.c	…
fdt_strerror.c	…
fdt_sw.c	…
fdt_wip.c	…
find_bit.c	…
find_bit_benchmark.c	…
find_bit_benchmark_rust.rs	…
flex_proportions.c	…
fw_table.c	…
genalloc.c	…
generic-radix-tree.c	…
glob.c	…
globtest.c	…
group_cpus.c	…
hexdump.c	…
hweight.c	bitops: Update kernel-doc in hweight.c to fix the issues with it	2025-11-06 11:51:04 -05:00
idr.c	idr: fix idr_alloc() returning an ID out of range	2025-12-23 11:23:11 -08:00
inflate.c	…
interval_tree.c	interval_tree: Fix ITSTATIC usage for *_subtree_search()	2025-10-14 14:45:22 -07:00
interval_tree_test.c	…
iomap.c	…
iomap_copy.c	…
iomem_copy.c	…
iommu-helper.c	…
iov_iter.c	iov_iter: Add missing speculation barrier to copy_from_user_iter()	2025-11-18 15:27:34 +01:00
irq_poll.c	…
irq_regs.c	…
is_single_threaded.c	…
kasprintf.c	…
kfifo.c	kfifo: add kfifo_alloc_node() helper for NUMA awareness	2025-11-28 09:20:13 -07:00
klist.c	…
kobject.c	…
kobject_uevent.c	…
kstrtox.c	…
kstrtox.h	…
linear_ranges.c	…
list_debug.c	…
list_sort.c	…
llist.c	…
locking-selftest-hardirq.h	…
locking-selftest-mutex.h	…
locking-selftest-rlock-hardirq.h	…
locking-selftest-rlock-softirq.h	…
locking-selftest-rlock.h	…
locking-selftest-rsem.h	…
locking-selftest-rtmutex.h	…
locking-selftest-softirq.h	…
locking-selftest-spin-hardirq.h	…
locking-selftest-spin-softirq.h	…
locking-selftest-spin.h	…
locking-selftest-wlock-hardirq.h	…
locking-selftest-wlock-softirq.h	…
locking-selftest-wlock.h	…
locking-selftest-wsem.h	…
locking-selftest.c	treewide: Remove in_irq()	2025-10-24 21:39:27 +02:00
lockref.c	lockref: add a __cond_lock annotation for lockref_put_or_lock	2025-12-10 05:58:51 +09:00
logic_iomem.c	…
logic_pio.c	…
lru_cache.c	…
lshrdi3.c	…
lwq.c	…
maple_tree.c	maple_tree: fix tracepoint string pointers	2025-11-09 21:19:45 -08:00
memcat_p.c	…
memory-notifier-error-inject.c	…
memregion.c	…
memweight.c	…
min_heap.c	…
muldi3.c	…
net_utils.c	…
netdev-notifier-error-inject.c	…
nlattr.c	…
nmi_backtrace.c	…
notifier-error-inject.c	…
notifier-error-inject.h	…
objagg.c	…
objpool.c	…
of-reconfig-notifier-error-inject.c	…
oid_registry.c	…
once.c	…
packing.c	…
packing_test.c	…
parman.c	…
parser.c	…
percpu-refcount.c	…
percpu_counter.c	…
percpu_test.c	…
plist.c	treewide: Update email address	2026-01-11 06:09:11 -10:00
pm-notifier-error-inject.c	…
polynomial.c	…
radix-tree.c	…
radix-tree.h	…
random32.c	…
ratelimit.c	lib: ratelimit: fix spelling mistake 'seperately'	2025-11-20 14:03:45 -08:00
rbtree.c	rbtree: inline rb_last()	2025-11-27 14:24:30 -08:00
rbtree_test.c	…
rcuref.c	…
ref_tracker.c	…
refcount.c	…
rhashtable.c	…
sbitmap.c	…
scatterlist.c	…
seq_buf.c	…
sg_pool.c	…
sg_split.c	…
siphash.c	…
smp_processor_id.c	…
sort.c	…
stackdepot.c	…
stmp_device.c	…
string.c	…
string_helpers.c	…
strncpy_from_user.c	lib/strn*,uaccess: Use masked_user_{read/write}_access_begin when required	2025-11-18 15:27:35 +01:00
strnlen_user.c	lib/strn*,uaccess: Use masked_user_{read/write}_access_begin when required	2025-11-18 15:27:35 +01:00
sys_info.c	sys_info: add a default kernel sys_info mask	2025-11-20 14:03:43 -08:00
syscall.c	…
test-kstrtox.c	…
test_bitmap.c	…
test_bitops.c	…
test_bpf.c	…
test_debug_virtual.c	…
test_dynamic_debug.c	…
test_firmware.c	…
test_fpu.h	…
test_fpu_glue.c	…
test_fpu_impl.c	…
test_free_pages.c	…
test_hexdump.c	…
test_hmm.c	mm/hmm/test: fix error handling in dmirror_device_init	2025-11-24 15:08:50 -08:00
test_hmm_uapi.h	lib/test_hmm: add large page allocation failure testing	2025-11-24 15:08:48 -08:00
test_ida.c	…
test_kho.c	test_kho: always print restore status	2025-11-27 14:24:42 -08:00
test_kmod.c	…
test_lockup.c	…
test_maple_tree.c	Summary of significant series in this pull request:	2025-10-02 18:18:33 -07:00
test_memcat_p.c	…
test_meminit.c	…
test_min_heap.c	…
test_module.c	…
test_objagg.c	…
test_objpool.c	…
test_parman.c	…
test_ref_tracker.c	…
test_rhashtable.c	…
test_static_key_base.c	…
test_static_keys.c	…
test_sysctl.c	…
test_ubsan.c	…
test_uuid.c	…
test_vmalloc.c	lib/test_vmalloc: remove xfail condition check	2025-11-16 17:27:53 -08:00
test_xarray.c	…
textsearch.c	…
timerqueue.c	…
trace_readwrite.c	…
ts_bm.c	…
ts_fsm.c	…
ts_kmp.c	…
ubsan.c	…
ubsan.h	…
ucmpdi2.c	…
ucs2_string.c	…
union_find.c	…
usercopy.c	uaccess: decouple INLINE_COPY_FROM_USER and CONFIG_RUST	2025-11-12 10:00:16 -08:00
uuid.c	…
vsprintf.c	Merge branch 'for-6.19-vsprintf-timespec64' into for-linus	2025-12-01 14:14:34 +01:00
win_minmax.c	…
xarray.c	…
xxhash.c	lib/xxhash: remove more unused xxh functions	2025-11-12 10:00:17 -08:00