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linux/crypto
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Sabrina Dubroca a32f1923c6 crypto: scompress - increment scomp_scratch_users when already allocated 
Commit ddd0a42671 only increments scomp_scratch_users when it was 0,
causing a panic when using ipcomp:

    Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
    KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
    CPU: 1 UID: 0 PID: 619 Comm: ping Tainted: G                 N  6.15.0-rc3-net-00032-ga79be02bba5c #41 PREEMPT(full)
    Tainted: [N]=TEST
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014
    RIP: 0010:inflate_fast+0x5a2/0x1b90
    [...]
    Call Trace:
     <IRQ>
     zlib_inflate+0x2d60/0x6620
     deflate_sdecompress+0x166/0x350
     scomp_acomp_comp_decomp+0x45f/0xa10
     scomp_acomp_decompress+0x21/0x120
     acomp_do_req_chain+0x3e5/0x4e0
     ipcomp_input+0x212/0x550
     xfrm_input+0x2de2/0x72f0
    [...]
    Kernel panic - not syncing: Fatal exception in interrupt
    Kernel Offset: disabled
    ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---

Instead, let's keep the old increment, and decrement back to 0 if the
scratch allocation fails.

Fixes: ddd0a42671 ("crypto: scompress - Fix scratch allocation failure handling")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2025-04-25 10:33:30 +08:00
..
asymmetric_keys crypto: sig - Prepare for algorithms with variable signature size 2025-02-09 18:08:12 +08:00
async_tx async_xor: Remove unused 'async_xor_val' 2025-03-15 15:08:53 +08:00
krb5 crypto: krb5 - Use SG miter instead of doing it by hand 2025-03-21 17:33:38 +08:00
842.c crypto: 842 - drop obsolete 'comp' implementation 2025-03-21 17:39:06 +08:00
acompress.c crypto: acomp - Fix synchronous acomp chaining fallback 2025-03-22 07:25:19 +08:00
adiantum.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
aead.c crypto: aead - use str_yes_no() helper in crypto_aead_show() 2025-02-22 15:56:03 +08:00
aegis-neon.h crypto: aegis128-neon - add header for internal prototypes 2023-05-24 18:12:33 +08:00
aegis.h
aegis128-core.c crypto: scatterwalk - Change scatterwalk_next calling convention 2025-03-15 16:21:22 +08:00
aegis128-neon-inner.c crypto: aegis128-neon - add header for internal prototypes 2023-05-24 18:12:33 +08:00
aegis128-neon.c crypto: aegis128-neon - add header for internal prototypes 2023-05-24 18:12:33 +08:00
aes_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
aes_ti.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
af_alg.c crypto: Add missing MODULE_DESCRIPTION() macros 2024-05-31 17:34:56 +08:00
ahash.c crypto: ahash - Disable request chaining 2025-04-12 09:33:09 +08:00
akcipher.c crypto: akcipher - Drop sign/verify operations 2024-10-05 13:22:04 +08:00
algapi.c crypto: api - Call crypto_alg_put in crypto_unregister_alg 2025-03-21 17:39:06 +08:00
algboss.c crypto: algboss - Pass instance creation error up 2024-09-06 14:50:46 +08:00
algif_aead.c sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
algif_hash.c crypto: Add missing MODULE_DESCRIPTION() macros 2024-05-31 17:34:56 +08:00
algif_rng.c sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
algif_skcipher.c crypto: Add missing MODULE_DESCRIPTION() macros 2024-05-31 17:34:56 +08:00
ansi_cprng.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
anubis.c crypto: anubis - stop using cra_alignmask 2024-12-14 17:21:43 +08:00
api.c crypto: remove obsolete 'comp' compression API 2025-03-21 17:39:06 +08:00
arc4.c crypto: arc4 - Add internal state 2023-12-08 11:59:46 +08:00
aria_generic.c crypto: aria - stop using cra_alignmask 2024-12-14 17:21:43 +08:00
authenc.c crypto: authenc - stop using alignmask of ahash 2023-10-27 18:04:29 +08:00
authencesn.c crypto: authencesn - stop using alignmask of ahash 2023-10-27 18:04:29 +08:00
blake2b_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
blowfish_common.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
blowfish_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
bpf_crypto_skcipher.c crypto: bpf - Add MODULE_DESCRIPTION for skcipher 2025-03-02 15:19:43 +08:00
camellia_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
cast5_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
cast6_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
cast_common.c crypto: Add missing MODULE_DESCRIPTION() macros 2024-05-31 17:34:56 +08:00
cbc.c crypto: cbc - Ensure statesize is zero 2024-02-02 18:08:12 +08:00
ccm.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
chacha20poly1305.c crypto: chacha20poly1305 - Annotate struct chachapoly_ctx with __counted_by() 2024-08-17 13:55:49 +08:00
chacha_generic.c crypto: lib/chacha - remove unused arch-specific init support 2025-03-21 17:39:06 +08:00
cipher.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
cmac.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
compress.h crypto: acomp - Move stream management into scomp layer 2025-03-15 16:21:22 +08:00
crc32_generic.c crypto: crc32 - don't unnecessarily register arch algorithms 2024-12-01 17:23:01 -08:00
crc32c_generic.c lib/crc32: remove "_le" from crc32c base and arch functions 2025-02-08 20:06:30 -08:00
cryptd.c crypto: cryptd - Only access common skcipher fields on spawn 2023-10-13 18:27:26 +08:00
crypto_engine.c treewide: Introduce kthread_run_worker[_on_cpu]() 2025-01-08 18:15:03 +01:00
crypto_null.c crypto: compress_null - drop obsolete 'comp' implementation 2025-03-21 17:39:06 +08:00
crypto_user.c crypto: remove obsolete 'comp' compression API 2025-03-21 17:39:06 +08:00
ctr.c crypto: skcipher - Make skcipher_walk src.virt.addr const 2025-03-15 16:21:22 +08:00
cts.c crypto: cts - Only access common skcipher fields on spawn 2023-10-13 18:27:27 +08:00
curve25519-generic.c crypto: Add missing MODULE_DESCRIPTION() macros 2024-05-31 17:34:56 +08:00
deflate.c crypto: deflate - drop obsolete 'comp' implementation 2025-03-21 17:39:06 +08:00
des_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
dh.c crypto: dh - Check mpi_rshift errors 2024-08-17 13:55:50 +08:00
dh_helper.c
drbg.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
ecb.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
ecc.c crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() 2025-02-09 18:08:12 +08:00
ecc_curve_defs.h crypto: ecc - Add NIST P521 curve parameters 2024-04-12 15:07:52 +08:00
ecdh.c crypto: ecdh - Initialize ctx->private_key in proper byte order 2024-04-26 17:26:09 +08:00
ecdh_helper.c
ecdsa-p1363.c crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() 2025-02-09 18:08:12 +08:00
ecdsa-x962.c crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() 2025-02-09 18:08:12 +08:00
ecdsa.c crypto: ecdsa - Support P1363 signature decoding 2024-10-05 13:22:05 +08:00
ecdsasignature.asn1
echainiv.c
ecrdsa.c crypto: ecrdsa - Fix signature size calculation 2024-10-05 13:22:05 +08:00
ecrdsa_defs.h crypto: ecc - Add nbits field to ecc_curve structure 2024-04-12 15:07:52 +08:00
ecrdsa_params.asn1
ecrdsa_pub_key.asn1
essiv.c crypto: essiv - Replace memcpy() + NUL-termination with strscpy() 2025-03-21 17:39:06 +08:00
fcrypt.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
fips.c treewide: const qualify ctl_tables where applicable 2025-01-28 13:48:37 +01:00
gcm.c crypto: gcm - stop using alignmask of ahash 2023-10-27 18:04:29 +08:00
geniv.c
ghash-generic.c
hash.h crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
hash_info.c crypto: FIPS 202 SHA-3 register in hash info for IMA 2023-10-27 18:04:30 +08:00
hctr2.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
hkdf.c crypto,fs: Separate out hkdf_extract() and hkdf_expand() 2025-03-20 16:53:53 -07:00
hmac.c crypto: hmac - remove unnecessary alignment logic 2023-10-27 18:04:24 +08:00
internal.h crypto: api - Add cra_type->destroy hook 2025-03-15 16:21:22 +08:00
jitterentropy-kcapi.c crypto: jitter - Use kvfree_sensitive() to fix Coccinelle warning 2024-04-05 15:46:33 +08:00
jitterentropy-testing.c crypto: jitter - output full sample from test interface 2024-10-19 08:44:30 +08:00
jitterentropy.c crypto: jitter - Use min() to simplify jent_read_entropy() 2024-08-30 18:22:30 +08:00
jitterentropy.h crypto: jitter - output full sample from test interface 2024-10-19 08:44:30 +08:00
Kconfig This update includes the following changes: 2025-03-29 10:01:55 -07:00
kdf_sp800108.c crypto: kdf - silence noisy self-test 2022-11-25 17:39:18 +08:00
khazad.c crypto: khazad - stop using cra_alignmask 2024-12-14 17:21:44 +08:00
kpp.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
krb5enc.c crypto: Add 'krb5enc' hash and cipher AEAD algorithm 2025-03-02 21:39:34 +00:00
lrw.c crypto: skcipher - Make skcipher_walk src.virt.addr const 2025-03-15 16:21:22 +08:00
lskcipher.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
lz4.c crypto: lz4 - drop obsolete 'comp' implementation 2025-03-21 17:39:06 +08:00
lz4hc.c crypto: lz4hc - drop obsolete 'comp' implementation 2025-03-21 17:39:06 +08:00
lzo-rle.c crypto: lzo-rle - drop obsolete 'comp' implementation 2025-03-21 17:39:06 +08:00
lzo.c crypto: lzo - drop obsolete 'comp' implementation 2025-03-21 17:39:06 +08:00
Makefile This update includes the following changes: 2025-03-29 10:01:55 -07:00
md4.c
md5.c
michael_mic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
nhpoly1305.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
pcbc.c crypto: skcipher - Make skcipher_walk src.virt.addr const 2025-03-15 16:21:22 +08:00
pcrypt.c crypto: pcrypt - Call crypto layer directly when padata_do_parallel() return -EBUSY 2024-10-28 18:32:36 +08:00
poly1305_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
polyval-generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
proc.c crypto: remove obsolete 'comp' compression API 2025-03-21 17:39:06 +08:00
ripemd.h
rmd160.c
rng.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
rsa-pkcs1pad.c crypto: rsassa-pkcs1 - Migrate to sig_alg backend 2024-10-05 13:22:04 +08:00
rsa.c crypto: rsassa-pkcs1 - Migrate to sig_alg backend 2024-10-05 13:22:04 +08:00
rsa_helper.c
rsaprivkey.asn1 treewide: Add SPDX identifier to IETF ASN.1 modules 2023-10-27 18:04:28 +08:00
rsapubkey.asn1 treewide: Add SPDX identifier to IETF ASN.1 modules 2023-10-27 18:04:28 +08:00
rsassa-pkcs1.c crypto: sig - Prepare for algorithms with variable signature size 2025-02-09 18:08:12 +08:00
scatterwalk.c crypto: scatterwalk - Add memcpy_sglist 2025-03-15 16:21:22 +08:00
scompress.c crypto: scompress - increment scomp_scratch_users when already allocated 2025-04-25 10:33:30 +08:00
seed.c crypto: seed - stop using cra_alignmask 2024-12-14 17:21:44 +08:00
seqiv.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
serpent_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sha1_generic.c
sha3_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sha256_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sha512_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
shash.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
sig.c crypto: sig - Set maskset to CRYPTO_ALG_TYPE_MASK 2024-12-10 13:44:21 +08:00
simd.c crypto: simd - Do not call crypto_alloc_tfm during registration 2024-08-24 21:39:15 +08:00
skcipher.c crypto: scatterwalk - simplify map and unmap calling convention 2025-03-21 17:33:38 +08:00
skcipher.h crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
sm3.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sm3_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sm4.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sm4_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
streebog_generic.c
tcrypt.c This update includes the following changes: 2025-03-29 10:01:55 -07:00
tcrypt.h crypto: tcrypt - include larger key sizes in RFC4106 benchmark 2023-01-20 18:29:31 +08:00
tea.c crypto: tea - stop using cra_alignmask 2024-12-14 17:21:43 +08:00
testmgr.c Revert "crypto: testmgr - Add multibuffer acomp testing" 2025-04-19 11:07:58 +08:00
testmgr.h This update includes the following changes: 2025-03-29 10:01:55 -07:00
twofish_common.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
twofish_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
wp512.c crypto: wp512 - disable kmsan checks in wp512_process_buffer() 2022-12-30 22:56:27 +08:00
xcbc.c module: Convert symbol namespace to string literal 2024-12-02 11:34:44 -08:00
xctr.c crypto: skcipher - Make skcipher_walk src.virt.addr const 2025-03-15 16:21:22 +08:00
xor.c crypto: xor - fix template benchmarking 2024-08-02 20:53:25 +08:00
xts.c crypto: skcipher - Make skcipher_walk src.virt.addr const 2025-03-15 16:21:22 +08:00
xxhash_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
zstd.c crypto: zstd - drop obsolete 'comp' implementation 2025-03-21 17:39:06 +08:00