Hello, syzbot found the following issue on: HEAD commit: 8f6f76a6a29f Merge tag 'mm-nonmm-stable-2023-11-02-14-08' .. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15169b87680000 kernel config: https://syzkaller.appspot.com/x/.config?x=5ea2285f517f94d0 dashboard link: https://syzkaller.appspot.com/bug?extid=d3ddc6dcc6386dea398b compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=179c2ecf680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=149dff40e80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/dfead0cc157b/disk-8f6f76a6.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c2ab876430bc/vmlinux-8f6f76a6.xz kernel image: https://storage.googleapis.com/syzbot-assets/e9cd314888e8/bzImage-8f6f76a6.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/4a497ff0ef1a/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d3ddc6dcc6386dea398b@xxxxxxxxxxxxxxxxxxxxxxxxx executing program BUG: memory leak unreferenced object 0xffff88810891e940 (size 64): comm "syz-executor244", pid 5031, jiffies 4294941874 (age 13.150s) 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 e0 51 00 00 00 00 00 ..........Q..... backtrace: [<ffffffff816336ad>] kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline] [<ffffffff816336ad>] slab_post_alloc_hook mm/slab.h:766 [inline] [<ffffffff816336ad>] slab_alloc_node mm/slub.c:3478 [inline] [<ffffffff816336ad>] __kmem_cache_alloc_node+0x2dd/0x3f0 mm/slub.c:3517 [<ffffffff8157e505>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1098 [<ffffffff82135480>] kmalloc include/linux/slab.h:600 [inline] [<ffffffff82135480>] kzalloc include/linux/slab.h:721 [inline] [<ffffffff82135480>] btrfs_add_delayed_tree_ref+0x550/0x5b0 fs/btrfs/delayed-ref.c:1045 [<ffffffff820874bb>] btrfs_alloc_tree_block+0x65b/0x7c0 fs/btrfs/extent-tree.c:5153 [<ffffffff8206c15e>] btrfs_force_cow_block+0x1be/0xb30 fs/btrfs/ctree.c:563 [<ffffffff8206cbf8>] btrfs_cow_block+0x128/0x3b0 fs/btrfs/ctree.c:741 [<ffffffff82073609>] btrfs_search_slot+0xa49/0x1770 fs/btrfs/ctree.c:2095 [<ffffffff82074fa3>] btrfs_insert_empty_items+0x43/0xc0 fs/btrfs/ctree.c:4285 [<ffffffff820b8a34>] btrfs_create_new_inode+0x354/0xfe0 fs/btrfs/inode.c:6283 [<ffffffff820b99e7>] btrfs_create_common+0xf7/0x190 fs/btrfs/inode.c:6511 [<ffffffff820b9c12>] btrfs_create+0x72/0x90 fs/btrfs/inode.c:6551 [<ffffffff816b673f>] lookup_open fs/namei.c:3477 [inline] [<ffffffff816b673f>] open_last_lookups fs/namei.c:3546 [inline] [<ffffffff816b673f>] path_openat+0x17df/0x1d60 fs/namei.c:3776 [<ffffffff816b78e1>] do_filp_open+0xd1/0x1c0 fs/namei.c:3809 [<ffffffff816906c4>] do_sys_openat2+0xf4/0x150 fs/open.c:1440 [<ffffffff81690ec5>] do_sys_open fs/open.c:1455 [inline] [<ffffffff81690ec5>] __do_sys_open fs/open.c:1463 [inline] [<ffffffff81690ec5>] __se_sys_open fs/open.c:1459 [inline] [<ffffffff81690ec5>] __x64_sys_open+0xa5/0xf0 fs/open.c:1459 [<ffffffff84b5dd4f>] do_syscall_x64 arch/x86/entry/common.c:51 [inline] [<ffffffff84b5dd4f>] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 BUG: memory leak unreferenced object 0xffff88810891e980 (size 64): comm "syz-executor244", pid 5031, jiffies 4294941874 (age 13.150s) 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 69 00 00 00 00 00 ..........i..... backtrace: [<ffffffff816336ad>] kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline] [<ffffffff816336ad>] slab_post_alloc_hook mm/slab.h:766 [inline] [<ffffffff816336ad>] slab_alloc_node mm/slub.c:3478 [inline] [<ffffffff816336ad>] __kmem_cache_alloc_node+0x2dd/0x3f0 mm/slub.c:3517 [<ffffffff8157e505>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1098 [<ffffffff82135480>] kmalloc include/linux/slab.h:600 [inline] [<ffffffff82135480>] kzalloc include/linux/slab.h:721 [inline] [<ffffffff82135480>] btrfs_add_delayed_tree_ref+0x550/0x5b0 fs/btrfs/delayed-ref.c:1045 [<ffffffff82083f81>] btrfs_free_tree_block+0x131/0x450 fs/btrfs/extent-tree.c:3432 [<ffffffff8206c678>] btrfs_force_cow_block+0x6d8/0xb30 fs/btrfs/ctree.c:618 [<ffffffff8206cbf8>] btrfs_cow_block+0x128/0x3b0 fs/btrfs/ctree.c:741 [<ffffffff82073609>] btrfs_search_slot+0xa49/0x1770 fs/btrfs/ctree.c:2095 [<ffffffff82074fa3>] btrfs_insert_empty_items+0x43/0xc0 fs/btrfs/ctree.c:4285 [<ffffffff820b8a34>] btrfs_create_new_inode+0x354/0xfe0 fs/btrfs/inode.c:6283 [<ffffffff820b99e7>] btrfs_create_common+0xf7/0x190 fs/btrfs/inode.c:6511 [<ffffffff820b9c12>] btrfs_create+0x72/0x90 fs/btrfs/inode.c:6551 [<ffffffff816b673f>] lookup_open fs/namei.c:3477 [inline] [<ffffffff816b673f>] open_last_lookups fs/namei.c:3546 [inline] [<ffffffff816b673f>] path_openat+0x17df/0x1d60 fs/namei.c:3776 [<ffffffff816b78e1>] do_filp_open+0xd1/0x1c0 fs/namei.c:3809 [<ffffffff816906c4>] do_sys_openat2+0xf4/0x150 fs/open.c:1440 [<ffffffff81690ec5>] do_sys_open fs/open.c:1455 [inline] [<ffffffff81690ec5>] __do_sys_open fs/open.c:1463 [inline] [<ffffffff81690ec5>] __se_sys_open fs/open.c:1459 [inline] [<ffffffff81690ec5>] __x64_sys_open+0xa5/0xf0 fs/open.c:1459 [<ffffffff84b5dd4f>] do_syscall_x64 arch/x86/entry/common.c:51 [inline] [<ffffffff84b5dd4f>] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 BUG: memory leak unreferenced object 0xffff88810891ea00 (size 64): comm "syz-executor244", pid 5031, jiffies 4294941874 (age 13.150s) 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 f0 51 00 00 00 00 00 ..........Q..... backtrace: [<ffffffff816336ad>] kmemleak_alloc_recursive include/linux/kmemleak.h:42 [inline] [<ffffffff816336ad>] slab_post_alloc_hook mm/slab.h:766 [inline] [<ffffffff816336ad>] slab_alloc_node mm/slub.c:3478 [inline] [<ffffffff816336ad>] __kmem_cache_alloc_node+0x2dd/0x3f0 mm/slub.c:3517 [<ffffffff8157e505>] kmalloc_trace+0x25/0x90 mm/slab_common.c:1098 [<ffffffff82135480>] kmalloc include/linux/slab.h:600 [inline] [<ffffffff82135480>] kzalloc include/linux/slab.h:721 [inline] [<ffffffff82135480>] btrfs_add_delayed_tree_ref+0x550/0x5b0 fs/btrfs/delayed-ref.c:1045 [<ffffffff820874bb>] btrfs_alloc_tree_block+0x65b/0x7c0 fs/btrfs/extent-tree.c:5153 [<ffffffff8206c15e>] btrfs_force_cow_block+0x1be/0xb30 fs/btrfs/ctree.c:563 [<ffffffff8206cbf8>] btrfs_cow_block+0x128/0x3b0 fs/btrfs/ctree.c:741 [<ffffffff82073609>] btrfs_search_slot+0xa49/0x1770 fs/btrfs/ctree.c:2095 [<ffffffff82074fa3>] btrfs_insert_empty_items+0x43/0xc0 fs/btrfs/ctree.c:4285 [<ffffffff820b8a34>] btrfs_create_new_inode+0x354/0xfe0 fs/btrfs/inode.c:6283 [<ffffffff820b99e7>] btrfs_create_common+0xf7/0x190 fs/btrfs/inode.c:6511 [<ffffffff820b9c12>] btrfs_create+0x72/0x90 fs/btrfs/inode.c:6551 [<ffffffff816b673f>] lookup_open fs/namei.c:3477 [inline] [<ffffffff816b673f>] open_last_lookups fs/namei.c:3546 [inline] [<ffffffff816b673f>] path_openat+0x17df/0x1d60 fs/namei.c:3776 [<ffffffff816b78e1>] do_filp_open+0xd1/0x1c0 fs/namei.c:3809 [<ffffffff816906c4>] do_sys_openat2+0xf4/0x150 fs/open.c:1440 [<ffffffff81690ec5>] do_sys_open fs/open.c:1455 [inline] [<ffffffff81690ec5>] __do_sys_open fs/open.c:1463 [inline] [<ffffffff81690ec5>] __se_sys_open fs/open.c:1459 [inline] [<ffffffff81690ec5>] __x64_sys_open+0xa5/0xf0 fs/open.c:1459 [<ffffffff84b5dd4f>] do_syscall_x64 arch/x86/entry/common.c:51 [inline] [<ffffffff84b5dd4f>] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
