BUG: memory leak unreferenced object 0xffff888023a29f40 (size 16): comm "syz-executor.6", pid 9674, jiffies 4295411626 (age 15.000s) hex dump (first 16 bytes): d0 71 c6 46 80 88 ff ff 00 a0 f7 0d 80 88 ff ff .q.F............ backtrace: [<00000000242f33fd>] kmalloc include/linux/slab.h:552 [inline] [<00000000242f33fd>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367 [<000000008487b228>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774 [<00000000ce7e9fba>] mount_bdev+0x331/0x3f0 fs/super.c:1419 [<00000000bbdf7768>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592 [<000000008679ca70>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 [<0000000015d00315>] do_new_mount fs/namespace.c:2881 [inline] [<0000000015d00315>] path_mount+0x139a/0x2080 fs/namespace.c:3211 [<000000008dc03853>] do_mount fs/namespace.c:3224 [inline] [<000000008dc03853>] __do_sys_mount fs/namespace.c:3432 [inline] [<000000008dc03853>] __se_sys_mount fs/namespace.c:3409 [inline] [<000000008dc03853>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 [<000000009c0bb1d0>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<0000000081912ab5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888023a29f80 (size 16): comm "syz-executor.3", pid 9667, jiffies 4295411626 (age 15.000s) hex dump (first 16 bytes): e8 70 c6 46 80 88 ff ff 00 80 fd 43 80 88 ff ff .p.F.......C.... backtrace: [<00000000242f33fd>] kmalloc include/linux/slab.h:552 [inline] [<00000000242f33fd>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367 [<000000008487b228>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774 [<00000000ce7e9fba>] mount_bdev+0x331/0x3f0 fs/super.c:1419 [<00000000bbdf7768>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592 [<000000008679ca70>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 [<0000000015d00315>] do_new_mount fs/namespace.c:2881 [inline] [<0000000015d00315>] path_mount+0x139a/0x2080 fs/namespace.c:3211 [<000000008dc03853>] do_mount fs/namespace.c:3224 [inline] [<000000008dc03853>] __do_sys_mount fs/namespace.c:3432 [inline] [<000000008dc03853>] __se_sys_mount fs/namespace.c:3409 [inline] [<000000008dc03853>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 [<000000009c0bb1d0>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<0000000081912ab5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888032c60940 (size 16): comm "syz-executor.0", pid 9673, jiffies 4295411627 (age 14.999s) hex dump (first 16 bytes): e8 90 f6 46 80 88 ff ff 00 40 14 33 80 88 ff ff ...F.....@.3.... backtrace: [<00000000242f33fd>] kmalloc include/linux/slab.h:552 [inline] [<00000000242f33fd>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367 [<000000008487b228>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774 [<00000000ce7e9fba>] mount_bdev+0x331/0x3f0 fs/super.c:1419 [<00000000bbdf7768>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592 [<000000008679ca70>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 [<0000000015d00315>] do_new_mount fs/namespace.c:2881 [inline] [<0000000015d00315>] path_mount+0x139a/0x2080 fs/namespace.c:3211 [<000000008dc03853>] do_mount fs/namespace.c:3224 [inline] [<000000008dc03853>] __do_sys_mount fs/namespace.c:3432 [inline] [<000000008dc03853>] __se_sys_mount fs/namespace.c:3409 [inline] [<000000008dc03853>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 [<000000009c0bb1d0>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<0000000081912ab5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff8880466046a0 (size 16): comm "syz-executor.7", pid 9676, jiffies 4295411633 (age 14.993s) hex dump (first 16 bytes): 10 09 c6 46 80 88 ff ff 00 00 90 41 80 88 ff ff ...F.......A.... backtrace: [<00000000242f33fd>] kmalloc include/linux/slab.h:552 [inline] [<00000000242f33fd>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367 [<000000008487b228>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774 [<00000000ce7e9fba>] mount_bdev+0x331/0x3f0 fs/super.c:1419 [<00000000bbdf7768>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592 [<000000008679ca70>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 [<0000000015d00315>] do_new_mount fs/namespace.c:2881 [inline] [<0000000015d00315>] path_mount+0x139a/0x2080 fs/namespace.c:3211 [<000000008dc03853>] do_mount fs/namespace.c:3224 [inline] [<000000008dc03853>] __do_sys_mount fs/namespace.c:3432 [inline] [<000000008dc03853>] __se_sys_mount fs/namespace.c:3409 [inline] [<000000008dc03853>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 [<000000009c0bb1d0>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<0000000081912ab5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888023a293a0 (size 16): comm "syz-executor.4", pid 9725, jiffies 4295411888 (age 14.738s) hex dump (first 16 bytes): 80 0e 54 19 80 88 ff ff 00 80 d9 44 80 88 ff ff ..T........D.... backtrace: [<00000000242f33fd>] kmalloc include/linux/slab.h:552 [inline] [<00000000242f33fd>] ext4_multi_mount_protect+0x861/0xb20 fs/ext4/mmp.c:367 [<000000008487b228>] ext4_fill_super+0xa20e/0xcf20 fs/ext4/super.c:4774 [<00000000ce7e9fba>] mount_bdev+0x331/0x3f0 fs/super.c:1419 [<00000000bbdf7768>] legacy_get_tree+0x105/0x220 fs/fs_context.c:592 [<000000008679ca70>] vfs_get_tree+0x8e/0x2f0 fs/super.c:1549 [<0000000015d00315>] do_new_mount fs/namespace.c:2881 [inline] [<0000000015d00315>] path_mount+0x139a/0x2080 fs/namespace.c:3211 [<000000008dc03853>] do_mount fs/namespace.c:3224 [inline] [<000000008dc03853>] __do_sys_mount fs/namespace.c:3432 [inline] [<000000008dc03853>] __se_sys_mount fs/namespace.c:3409 [inline] [<000000008dc03853>] __x64_sys_mount+0x27e/0x300 fs/namespace.c:3409 [<000000009c0bb1d0>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 [<0000000081912ab5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: leak checking failed