Hello, syzbot found the following issue on: HEAD commit: 9dbc1c03 Merge tag 'xfs-5.10-fixes-3' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14554746500000 kernel config: https://syzkaller.appspot.com/x/.config?x=da948f64bffc0baf dashboard link: https://syzkaller.appspot.com/bug?extid=05d57384ff3551e412be compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10db2f92500000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1698d134500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+05d57384ff3551e412be@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff8881019e6d00 (size 256): comm "syz-executor550", pid 8486, jiffies 4294950527 (age 34.300s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ a0 e0 fd 40 81 88 ff ff c0 96 fc 0f 81 88 ff ff ...@............ backtrace: [<00000000e44e21fc>] kmem_cache_zalloc include/linux/slab.h:654 [inline] [<00000000e44e21fc>] __alloc_file+0x1f/0x130 fs/file_table.c:101 [<00000000d4a5a020>] alloc_empty_file+0x69/0x120 fs/file_table.c:151 [<00000000eb40cf42>] alloc_file+0x33/0x1b0 fs/file_table.c:193 [<000000001c6c0501>] alloc_file_pseudo+0xb2/0x140 fs/file_table.c:233 [<00000000acbecb3c>] anon_inode_getfile fs/anon_inodes.c:91 [inline] [<00000000acbecb3c>] anon_inode_getfile+0xaa/0x120 fs/anon_inodes.c:74 [<0000000047c0be97>] io_uring_get_fd fs/io_uring.c:9172 [inline] [<0000000047c0be97>] io_uring_create fs/io_uring.c:9351 [inline] [<0000000047c0be97>] io_uring_setup+0x1139/0x1640 fs/io_uring.c:9385 [<0000000079584e06>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000009e5ef977>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888110e3ce58 (size 24): comm "syz-executor550", pid 8486, jiffies 4294950527 (age 34.300s) hex dump (first 24 bytes): 00 00 00 00 00 00 00 00 b0 4e 93 00 81 88 ff ff .........N...... 00 00 00 00 00 00 00 00 ........ backtrace: [<00000000c78e23d5>] kmem_cache_zalloc include/linux/slab.h:654 [inline] [<00000000c78e23d5>] lsm_file_alloc security/security.c:568 [inline] [<00000000c78e23d5>] security_file_alloc+0x2a/0xb0 security/security.c:1456 [<000000000d394d00>] __alloc_file+0x5d/0x130 fs/file_table.c:106 [<00000000d4a5a020>] alloc_empty_file+0x69/0x120 fs/file_table.c:151 [<00000000eb40cf42>] alloc_file+0x33/0x1b0 fs/file_table.c:193 [<000000001c6c0501>] alloc_file_pseudo+0xb2/0x140 fs/file_table.c:233 [<00000000acbecb3c>] anon_inode_getfile fs/anon_inodes.c:91 [inline] [<00000000acbecb3c>] anon_inode_getfile+0xaa/0x120 fs/anon_inodes.c:74 [<0000000047c0be97>] io_uring_get_fd fs/io_uring.c:9172 [inline] [<0000000047c0be97>] io_uring_create fs/io_uring.c:9351 [inline] [<0000000047c0be97>] io_uring_setup+0x1139/0x1640 fs/io_uring.c:9385 [<0000000079584e06>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000009e5ef977>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888101abb840 (size 168): comm "syz-executor550", pid 8473, jiffies 4294952674 (age 12.830s) 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: [<0000000046ab9583>] prepare_creds+0x25/0x390 kernel/cred.c:258 [<00000000064d32d3>] copy_creds+0x3a/0x230 kernel/cred.c:358 [<00000000d2f3a3f7>] copy_process+0x66f/0x2510 kernel/fork.c:1971 [<00000000e82686f8>] kernel_clone+0xf3/0x670 kernel/fork.c:2456 [<00000000bbc67aa6>] __do_sys_clone+0x76/0xa0 kernel/fork.c:2573 [<0000000079584e06>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000009e5ef977>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff888101716600 (size 256): comm "syz-executor550", pid 8502, jiffies 4294952674 (age 12.830s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ a0 e0 fd 40 81 88 ff ff 80 fd fd 0f 81 88 ff ff ...@............ backtrace: [<00000000e44e21fc>] kmem_cache_zalloc include/linux/slab.h:654 [inline] [<00000000e44e21fc>] __alloc_file+0x1f/0x130 fs/file_table.c:101 [<00000000d4a5a020>] alloc_empty_file+0x69/0x120 fs/file_table.c:151 [<00000000eb40cf42>] alloc_file+0x33/0x1b0 fs/file_table.c:193 [<000000001c6c0501>] alloc_file_pseudo+0xb2/0x140 fs/file_table.c:233 [<00000000acbecb3c>] anon_inode_getfile fs/anon_inodes.c:91 [inline] [<00000000acbecb3c>] anon_inode_getfile+0xaa/0x120 fs/anon_inodes.c:74 [<0000000047c0be97>] io_uring_get_fd fs/io_uring.c:9172 [inline] [<0000000047c0be97>] io_uring_create fs/io_uring.c:9351 [inline] [<0000000047c0be97>] io_uring_setup+0x1139/0x1640 fs/io_uring.c:9385 [<0000000079584e06>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<000000009e5ef977>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 --- This report is generated by a bot. 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