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memory leak in prepare_creds (3)

Status: upstream: reported C repro on 2022/04/21 02:56
Reported-by: syzbot+b43f20e5dc7bddc29028@syzkaller.appspotmail.com
First crash: 290d, last: 8d11h
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream memory leak in prepare_creds (2) C 2 586d 682d 22/24 fixed on 2021/11/10 00:50
upstream memory leak in prepare_creds C 10 713d 887d 21/24 fixed on 2021/03/10 01:48
Last patch testing requests:
Created Duration User Patch Repo Result
2022/11/15 09:30 13m retest repro upstream OK log
2022/11/15 04:30 16m retest repro upstream OK log

Sample crash report:
executing program
executing program
executing program
executing program
executing program
BUG: memory leak
unreferenced object 0xffff888104e82240 (size 176):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 23.740s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0ac0 (size 32):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 23.740s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82b40 (size 176):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 23.730s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0b40 (size 32):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 23.730s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82240 (size 176):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 27.230s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0ac0 (size 32):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 27.230s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82b40 (size 176):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 27.220s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0b40 (size 32):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 27.220s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82240 (size 176):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 28.420s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0ac0 (size 32):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 28.420s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82b40 (size 176):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 28.410s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0b40 (size 32):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 28.410s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82240 (size 176):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 29.660s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0ac0 (size 32):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 29.660s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82b40 (size 176):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 29.650s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0b40 (size 32):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 29.650s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82240 (size 176):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 29.690s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0ac0 (size 32):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 29.690s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82b40 (size 176):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 29.680s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0b40 (size 32):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 29.680s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82240 (size 176):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 29.730s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0ac0 (size 32):
  comm "syz-executor115", pid 5105, jiffies 4294958010 (age 29.730s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff888104e82b40 (size 176):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 29.720s)
  hex dump (first 32 bytes):
    01 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:
    [<ffffffff812a54d7>] prepare_creds+0x27/0x470 kernel/cred.c:260
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

BUG: memory leak
unreferenced object 0xffff8881051b0b40 (size 32):
  comm "syz-executor115", pid 5112, jiffies 4294958011 (age 29.720s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 a8 d1 e1 00 81 88 ff ff  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff814fa106>] __do_kmalloc_node mm/slab_common.c:967 [inline]
    [<ffffffff814fa106>] __kmalloc+0x46/0x120 mm/slab_common.c:981
    [<ffffffff8222f0e5>] kmalloc include/linux/slab.h:584 [inline]
    [<ffffffff8222f0e5>] kzalloc include/linux/slab.h:720 [inline]
    [<ffffffff8222f0e5>] lsm_cred_alloc security/security.c:568 [inline]
    [<ffffffff8222f0e5>] security_prepare_creds+0xa5/0xd0 security/security.c:1780
    [<ffffffff812a5796>] prepare_creds+0x2e6/0x470 kernel/cred.c:291
    [<ffffffff81c1738d>] ovl_fill_super+0xad/0x2760 fs/overlayfs/super.c:1917
    [<ffffffff8160faac>] mount_nodev+0x5c/0xc0 fs/super.c:1405
    [<ffffffff81673f2b>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:610
    [<ffffffff8160d598>] vfs_get_tree+0x28/0x100 fs/super.c:1489
    [<ffffffff81651437>] do_new_mount fs/namespace.c:3145 [inline]
    [<ffffffff81651437>] path_mount+0xc37/0x10d0 fs/namespace.c:3475
    [<ffffffff8165206e>] do_mount fs/namespace.c:3488 [inline]
    [<ffffffff8165206e>] __do_sys_mount fs/namespace.c:3697 [inline]
    [<ffffffff8165206e>] __se_sys_mount fs/namespace.c:3674 [inline]
    [<ffffffff8165206e>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3674
    [<ffffffff848f08b5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]
    [<ffffffff848f08b5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
    [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

executing program
executing program

Crashes (24):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-gce-leak 2023/01/24 05:02 upstream 7bf70dbb1882 9dfcf09c .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2023/01/12 20:36 upstream e8f60cd7db24 96166539 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2023/01/11 15:02 upstream 7dd4b804e080 1dac8c7a .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2023/01/07 13:44 upstream a689b938df39 1dac8c7a .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2023/01/05 06:33 upstream 512dee0c00ad 1dac8c7a .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2023/01/03 15:47 upstream 69b41ac87e4a ab32d508 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2023/01/02 08:42 upstream 150aae354b81 ab32d508 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/12/23 05:30 upstream 8395ae05cb5a 9da18ae8 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/12/22 02:35 upstream d264dd3bbbd1 4067838e .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/12/13 06:56 upstream 3a28c2c89f4b 67be1ae7 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/12/09 21:15 upstream 0d1409e4ff08 67be1ae7 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/12/06 19:18 upstream bce9332220bd d88f3abb .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/12/01 13:45 upstream ef4d3ea40565 4c2a66e8 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/11/28 10:59 upstream bf82d38c91f8 74a66371 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/11/26 14:17 upstream 0b1dcc2cf55a 74a66371 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/11/21 05:00 upstream 77c51ba552a1 5bb70014 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/11/18 19:34 upstream 84368d882b96 5bb70014 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/11/16 07:23 upstream 81e7cfa3a9eb 3a127a31 .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/11/15 17:42 upstream e01d50cbd6ee 97de9cfc .config console log report syz C [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2023/01/04 01:59 upstream 69b41ac87e4a 1dac8c7a .config console log report syz [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/12/29 11:14 upstream 1b929c02afd3 44712fbc .config console log report syz [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/11/23 16:45 upstream eb7081409f94 75740b3f .config console log report syz [disk image] [vmlinux] [kernel image] memory leak in prepare_creds
ci-upstream-gce-leak 2022/04/17 02:48 upstream 90ea17a9e27b 8bcc32a6 .config console log report syz C memory leak in prepare_creds
ci-upstream-gce-leak 2022/08/07 03:50 upstream 20cf903a0c40 88e3a122 .config console log report syz memory leak in prepare_creds
* Struck through repros no longer work on HEAD.