Re: [syzbot] memory leak in crypto_create_tfm_node
From: Herbert Xu
Date: Wed Oct 12 2022 - 05:23:52 EST
Hi:
I presume this is a leak in fscrypt (or perhaps something at an
even higher level).
Thanks,
On Tue, Oct 11, 2022 at 01:46:41PM -0700, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 4c86114194e6 Merge tag 'iomap-6.1-merge-1' of git://git.ke..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=104827bc880000
> kernel config: https://syzkaller.appspot.com/x/.config?x=10f41fbb818af57a
> dashboard link: https://syzkaller.appspot.com/bug?extid=104c2a89561289cec13e
> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17a1d5fa880000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12f77e34880000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/47a35ffaaa39/disk-4c861141.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/cc11d48eaf17/vmlinux-4c861141.xz
> mounted in repro: https://storage.googleapis.com/syzbot-assets/c14465c5ddba/mount_0.gz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+104c2a89561289cec13e@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> BUG: memory leak
> unreferenced object 0xffff8881024bd800 (size 512):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
> hex dump (first 32 bytes):
> d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810eb2e740 (size 32):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
> hex dump (first 32 bytes):
> d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
>
> BUG: memory leak
> unreferenced object 0xffff88810a9a1800 (size 2048):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810a820800 (size 1024):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 21.340s)
> hex dump (first 32 bytes):
> 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> backtrace:
> [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff8881024bd800 (size 512):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
> hex dump (first 32 bytes):
> d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810eb2e740 (size 32):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
> hex dump (first 32 bytes):
> d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
>
> BUG: memory leak
> unreferenced object 0xffff88810a9a1800 (size 2048):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810a820800 (size 1024):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 24.890s)
> hex dump (first 32 bytes):
> 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> backtrace:
> [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff8881024bd800 (size 512):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
> hex dump (first 32 bytes):
> d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810eb2e740 (size 32):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
> hex dump (first 32 bytes):
> d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
>
> BUG: memory leak
> unreferenced object 0xffff88810a9a1800 (size 2048):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810a820800 (size 1024):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 27.260s)
> hex dump (first 32 bytes):
> 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> backtrace:
> [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff8881024bd800 (size 512):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
> hex dump (first 32 bytes):
> d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810eb2e740 (size 32):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
> hex dump (first 32 bytes):
> d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
>
> BUG: memory leak
> unreferenced object 0xffff88810a9a1800 (size 2048):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810a820800 (size 1024):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 28.460s)
> hex dump (first 32 bytes):
> 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> backtrace:
> [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff8881024bd800 (size 512):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
> hex dump (first 32 bytes):
> d8 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> e0 be 2a 82 ff ff ff ff 68 fc 1c 08 81 88 ff ff ..*.....h.......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810eb2e740 (size 32):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
> hex dump (first 32 bytes):
> d0 00 00 00 00 00 00 00 00 00 00 00 ff ff ff ff ................
> 00 00 00 00 00 00 00 00 20 cb c7 85 ff ff ff ff ........ .......
> backtrace:
> [<ffffffff822a2f30>] kmalloc_node include/linux/slab.h:623 [inline]
> [<ffffffff822a2f30>] kzalloc_node include/linux/slab.h:744 [inline]
> [<ffffffff822a2f30>] crypto_create_tfm_node+0x30/0x130 crypto/api.c:504
> [<ffffffff822a50f5>] crypto_create_tfm crypto/internal.h:92 [inline]
> [<ffffffff822a50f5>] crypto_spawn_tfm2+0x45/0x90 crypto/algapi.c:803
> [<ffffffff822b4c1b>] crypto_spawn_shash include/crypto/internal/hash.h:231 [inline]
> [<ffffffff822b4c1b>] hmac_init_tfm+0x3b/0xa0 crypto/hmac.c:152
> [<ffffffff822ac8c7>] crypto_shash_init_tfm+0x77/0xf0 crypto/shash.c:440
> [<ffffffff822a2f52>] crypto_create_tfm_node+0x52/0x130 crypto/api.c:512
> [<ffffffff822a3816>] crypto_alloc_tfm_node+0x96/0x180 crypto/api.c:588
> [<ffffffff8168ccdc>] fscrypt_init_hkdf+0x3c/0x180 fs/crypto/hkdf.c:75
> [<ffffffff8168eb90>] add_master_key+0x160/0x370 fs/crypto/keyring.c:535
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
>
> BUG: memory leak
> unreferenced object 0xffff88810a9a1800 (size 2048):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
> hex dump (first 32 bytes):
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> backtrace:
> [<ffffffff8168ecf6>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168ecf6>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168ecf6>] allocate_filesystem_keyring fs/crypto/keyring.c:194 [inline]
> [<ffffffff8168ecf6>] do_add_master_key fs/crypto/keyring.c:502 [inline]
> [<ffffffff8168ecf6>] add_master_key+0x2c6/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> BUG: memory leak
> unreferenced object 0xffff88810a820800 (size 1024):
> comm "syz-executor361", pid 3670, jiffies 4294954234 (age 29.660s)
> hex dump (first 32 bytes):
> 00 b0 a4 0e 81 88 ff ff 00 00 00 00 00 00 00 00 ................
> 58 19 9a 0a 81 88 ff ff 00 00 00 00 00 00 00 00 X...............
> backtrace:
> [<ffffffff8168e25a>] kmalloc include/linux/slab.h:600 [inline]
> [<ffffffff8168e25a>] kzalloc include/linux/slab.h:733 [inline]
> [<ffffffff8168e25a>] add_new_master_key+0x4a/0x250 fs/crypto/keyring.c:418
> [<ffffffff8168ec10>] do_add_master_key fs/crypto/keyring.c:504 [inline]
> [<ffffffff8168ec10>] add_master_key+0x1e0/0x370 fs/crypto/keyring.c:554
> [<ffffffff8168f233>] fscrypt_add_test_dummy_key+0x93/0xc0 fs/crypto/keyring.c:801
> [<ffffffff8180b59a>] ext4_check_test_dummy_encryption fs/ext4/super.c:2680 [inline]
> [<ffffffff8180b59a>] ext4_check_opt_consistency+0x79a/0xb80 fs/ext4/super.c:2735
> [<ffffffff818119f6>] __ext4_fill_super fs/ext4/super.c:5095 [inline]
> [<ffffffff818119f6>] ext4_fill_super+0xb66/0x5080 fs/ext4/super.c:5648
> [<ffffffff815e7851>] get_tree_bdev+0x1f1/0x320 fs/super.c:1323
> [<ffffffff815e5a88>] vfs_get_tree+0x28/0x100 fs/super.c:1530
> [<ffffffff81629be7>] do_new_mount fs/namespace.c:3040 [inline]
> [<ffffffff81629be7>] path_mount+0xc37/0x10d0 fs/namespace.c:3370
> [<ffffffff8162a7ce>] do_mount fs/namespace.c:3383 [inline]
> [<ffffffff8162a7ce>] __do_sys_mount fs/namespace.c:3591 [inline]
> [<ffffffff8162a7ce>] __se_sys_mount fs/namespace.c:3568 [inline]
> [<ffffffff8162a7ce>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3568
> [<ffffffff8460f1e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
> [<ffffffff8460f1e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
> [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
>
> executing program
> executing program
> executing program
>
>
> ---
> 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.
> syzbot can test patches for this issue, for details see:
> https://goo.gl/tpsmEJ#testing-patches
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt