Hello, syzbot found the following issue on: HEAD commit: 603c04e27c3e Merge tag 'parisc-for-6.8-rc6' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12bc1372180000 kernel config: https://syzkaller.appspot.com/x/.config?x=1b015d567058472 dashboard link: https://syzkaller.appspot.com/bug?extid=b6ce97de27db385d5cd7 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/6aa7d0a5141b/disk-603c04e2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/2578a4f15ecb/vmlinux-603c04e2.xz kernel image: https://storage.googleapis.com/syzbot-assets/1d54b85566c3/bzImage-603c04e2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b6ce97de27db385d5cd7@xxxxxxxxxxxxxxxxxxxxxxxxx ===================================================== BUG: KMSAN: uninit-value in inv_subshift lib/crypto/aes.c:158 [inline] BUG: KMSAN: uninit-value in aes_decrypt+0x173d/0x1f20 lib/crypto/aes.c:333 inv_subshift lib/crypto/aes.c:158 [inline] aes_decrypt+0x173d/0x1f20 lib/crypto/aes.c:333 aesti_decrypt+0x7d/0xf0 crypto/aes_ti.c:47 crypto_ecb_crypt crypto/ecb.c:23 [inline] crypto_ecb_decrypt2+0x18b/0x2f0 crypto/ecb.c:51 crypto_lskcipher_crypt+0x66d/0x750 crypto/lskcipher.c:160 crypto_lskcipher_decrypt+0x82/0xb0 crypto/lskcipher.c:194 crypto_cbc_decrypt_inplace crypto/cbc.c:108 [inline] crypto_cbc_decrypt+0x4df/0x8e0 crypto/cbc.c:131 crypto_lskcipher_crypt_sg+0x43f/0x930 crypto/lskcipher.c:229 crypto_lskcipher_decrypt_sg+0x8a/0xc0 crypto/lskcipher.c:258 crypto_skcipher_decrypt+0x10d/0x1c0 crypto/skcipher.c:693 cts_cbc_decrypt+0x51b/0x720 crypto/cts.c:219 crypto_cts_decrypt+0x77f/0x9b0 crypto/cts.c:280 crypto_skcipher_decrypt+0x189/0x1c0 crypto/skcipher.c:695 _skcipher_recvmsg crypto/algif_skcipher.c:199 [inline] skcipher_recvmsg+0x1691/0x2190 crypto/algif_skcipher.c:221 sock_recvmsg_nosec+0x7a/0x120 net/socket.c:1046 ____sys_recvmsg+0x664/0x7f0 net/socket.c:2801 ___sys_recvmsg+0x223/0x840 net/socket.c:2845 do_recvmmsg+0x627/0xfd0 net/socket.c:2931 __sys_recvmmsg+0x10a/0x430 net/socket.c:3018 __do_compat_sys_recvmmsg_time32 net/compat.c:418 [inline] __se_compat_sys_recvmmsg_time32 net/compat.c:414 [inline] __ia32_compat_sys_recvmmsg_time32+0xf5/0x180 net/compat.c:414 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb5/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was stored to memory at: memcpy_dir crypto/scatterwalk.c:23 [inline] scatterwalk_copychunks crypto/scatterwalk.c:38 [inline] scatterwalk_map_and_copy+0x6dc/0x9a0 crypto/scatterwalk.c:67 cts_cbc_decrypt+0x3e2/0x720 crypto/cts.c:211 crypto_cts_decrypt+0x77f/0x9b0 crypto/cts.c:280 crypto_skcipher_decrypt+0x189/0x1c0 crypto/skcipher.c:695 _skcipher_recvmsg crypto/algif_skcipher.c:199 [inline] skcipher_recvmsg+0x1691/0x2190 crypto/algif_skcipher.c:221 sock_recvmsg_nosec+0x7a/0x120 net/socket.c:1046 ____sys_recvmsg+0x664/0x7f0 net/socket.c:2801 ___sys_recvmsg+0x223/0x840 net/socket.c:2845 do_recvmmsg+0x627/0xfd0 net/socket.c:2931 __sys_recvmmsg+0x10a/0x430 net/socket.c:3018 __do_compat_sys_recvmmsg_time32 net/compat.c:418 [inline] __se_compat_sys_recvmmsg_time32 net/compat.c:414 [inline] __ia32_compat_sys_recvmmsg_time32+0xf5/0x180 net/compat.c:414 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb5/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was stored to memory at: cts_cbc_decrypt+0x3a3/0x720 crypto/cts.c:208 crypto_cts_decrypt+0x77f/0x9b0 crypto/cts.c:280 crypto_skcipher_decrypt+0x189/0x1c0 crypto/skcipher.c:695 _skcipher_recvmsg crypto/algif_skcipher.c:199 [inline] skcipher_recvmsg+0x1691/0x2190 crypto/algif_skcipher.c:221 sock_recvmsg_nosec+0x7a/0x120 net/socket.c:1046 ____sys_recvmsg+0x664/0x7f0 net/socket.c:2801 ___sys_recvmsg+0x223/0x840 net/socket.c:2845 do_recvmmsg+0x627/0xfd0 net/socket.c:2931 __sys_recvmmsg+0x10a/0x430 net/socket.c:3018 __do_compat_sys_recvmmsg_time32 net/compat.c:418 [inline] __se_compat_sys_recvmmsg_time32 net/compat.c:414 [inline] __ia32_compat_sys_recvmmsg_time32+0xf5/0x180 net/compat.c:414 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb5/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was stored to memory at: __crypto_xor+0x171/0x1310 lib/crypto/utils.c:45 crypto_xor include/crypto/utils.h:31 [inline] cts_cbc_decrypt+0x2da/0x720 crypto/cts.c:199 crypto_cts_decrypt+0x77f/0x9b0 crypto/cts.c:280 crypto_skcipher_decrypt+0x189/0x1c0 crypto/skcipher.c:695 _skcipher_recvmsg crypto/algif_skcipher.c:199 [inline] skcipher_recvmsg+0x1691/0x2190 crypto/algif_skcipher.c:221 sock_recvmsg_nosec+0x7a/0x120 net/socket.c:1046 ____sys_recvmsg+0x664/0x7f0 net/socket.c:2801 ___sys_recvmsg+0x223/0x840 net/socket.c:2845 do_recvmmsg+0x627/0xfd0 net/socket.c:2931 __sys_recvmmsg+0x10a/0x430 net/socket.c:3018 __do_compat_sys_recvmmsg_time32 net/compat.c:418 [inline] __se_compat_sys_recvmmsg_time32 net/compat.c:414 [inline] __ia32_compat_sys_recvmmsg_time32+0xf5/0x180 net/compat.c:414 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb5/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was stored to memory at: memcpy_dir crypto/scatterwalk.c:23 [inline] scatterwalk_copychunks crypto/scatterwalk.c:38 [inline] scatterwalk_map_and_copy+0x6dc/0x9a0 crypto/scatterwalk.c:67 cts_cbc_decrypt+0x1b9/0x720 crypto/cts.c:197 crypto_cts_decrypt+0x77f/0x9b0 crypto/cts.c:280 crypto_skcipher_decrypt+0x189/0x1c0 crypto/skcipher.c:695 _skcipher_recvmsg crypto/algif_skcipher.c:199 [inline] skcipher_recvmsg+0x1691/0x2190 crypto/algif_skcipher.c:221 sock_recvmsg_nosec+0x7a/0x120 net/socket.c:1046 ____sys_recvmsg+0x664/0x7f0 net/socket.c:2801 ___sys_recvmsg+0x223/0x840 net/socket.c:2845 do_recvmmsg+0x627/0xfd0 net/socket.c:2931 __sys_recvmmsg+0x10a/0x430 net/socket.c:3018 __do_compat_sys_recvmmsg_time32 net/compat.c:418 [inline] __se_compat_sys_recvmmsg_time32 net/compat.c:414 [inline] __ia32_compat_sys_recvmmsg_time32+0xf5/0x180 net/compat.c:414 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb5/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was stored to memory at: __crypto_xor+0x171/0x1310 lib/crypto/utils.c:45 crypto_xor include/crypto/utils.h:31 [inline] crypto_cbc_decrypt_segment crypto/cbc.c:81 [inline] crypto_cbc_decrypt+0x2b1/0x8e0 crypto/cbc.c:133 crypto_lskcipher_crypt_sg+0x43f/0x930 crypto/lskcipher.c:229 crypto_lskcipher_decrypt_sg+0x8a/0xc0 crypto/lskcipher.c:258 crypto_skcipher_decrypt+0x10d/0x1c0 crypto/skcipher.c:693 crypto_cts_decrypt+0x704/0x9b0 crypto/cts.c:279 crypto_skcipher_decrypt+0x189/0x1c0 crypto/skcipher.c:695 _skcipher_recvmsg crypto/algif_skcipher.c:199 [inline] skcipher_recvmsg+0x1691/0x2190 crypto/algif_skcipher.c:221 sock_recvmsg_nosec+0x7a/0x120 net/socket.c:1046 ____sys_recvmsg+0x664/0x7f0 net/socket.c:2801 ___sys_recvmsg+0x223/0x840 net/socket.c:2845 do_recvmmsg+0x627/0xfd0 net/socket.c:2931 __sys_recvmmsg+0x10a/0x430 net/socket.c:3018 __do_compat_sys_recvmmsg_time32 net/compat.c:418 [inline] __se_compat_sys_recvmmsg_time32 net/compat.c:414 [inline] __ia32_compat_sys_recvmmsg_time32+0xf5/0x180 net/compat.c:414 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb5/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a Uninit was created at: slab_post_alloc_hook mm/slub.c:3819 [inline] slab_alloc_node mm/slub.c:3860 [inline] __do_kmalloc_node mm/slub.c:3980 [inline] __kmalloc+0x919/0xf80 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [inline] sock_kmalloc+0x134/0x1f0 net/core/sock.c:2684 af_alg_alloc_areq+0xe4/0x3a0 crypto/af_alg.c:1202 _skcipher_recvmsg crypto/algif_skcipher.c:118 [inline] skcipher_recvmsg+0x4f0/0x2190 crypto/algif_skcipher.c:221 sock_recvmsg_nosec+0x7a/0x120 net/socket.c:1046 ____sys_recvmsg+0x664/0x7f0 net/socket.c:2801 ___sys_recvmsg+0x223/0x840 net/socket.c:2845 do_recvmmsg+0x627/0xfd0 net/socket.c:2931 __sys_recvmmsg+0x10a/0x430 net/socket.c:3018 __do_compat_sys_recvmmsg_time32 net/compat.c:418 [inline] __se_compat_sys_recvmmsg_time32 net/compat.c:414 [inline] __ia32_compat_sys_recvmmsg_time32+0xf5/0x180 net/compat.c:414 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb5/0x110 arch/x86/entry/common.c:321 do_fast_syscall_32+0x37/0x70 arch/x86/entry/common.c:346 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:384 entry_SYSENTER_compat_after_hwframe+0x70/0x7a CPU: 1 PID: 11951 Comm: syz-executor.1 Not tainted 6.8.0-rc5-syzkaller-00278-g603c04e27c3e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
