executing program executing program executing program executing program executing program BUG: memory leak unreferenced object 0xffff88811a459760 (size 32): comm "syz-executor019", pid 6857, jiffies 4294947304 (age 13.850s) hex dump (first 32 bytes): 00 64 6d 61 62 75 66 3a 00 00 00 00 00 00 00 00 .dmabuf:........ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000643ab569>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<00000000643ab569>] slab_post_alloc_hook mm/slab.h:586 [inline] [<00000000643ab569>] slab_alloc mm/slab.c:3319 [inline] [<00000000643ab569>] __do_kmalloc mm/slab.c:3653 [inline] [<00000000643ab569>] __kmalloc_track_caller+0x165/0x300 mm/slab.c:3670 [<0000000021b8c40d>] memdup_user+0x26/0xa0 mm/util.c:172 [<0000000080957323>] strndup_user+0x62/0x80 mm/util.c:231 [<000000005526f96f>] dma_buf_set_name drivers/dma-buf/dma-buf.c:331 [inline] [<000000005526f96f>] dma_buf_ioctl+0x60/0x1e0 drivers/dma-buf/dma-buf.c:391 [<00000000b54edc47>] vfs_ioctl fs/ioctl.c:46 [inline] [<00000000b54edc47>] file_ioctl fs/ioctl.c:509 [inline] [<00000000b54edc47>] do_vfs_ioctl+0x62a/0x810 fs/ioctl.c:696 [<00000000c734e859>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:713 [<00000000e71a337d>] __do_sys_ioctl fs/ioctl.c:720 [inline] [<00000000e71a337d>] __se_sys_ioctl fs/ioctl.c:718 [inline] [<00000000e71a337d>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:718 [<00000000f0c85562>] do_syscall_64+0x73/0x1f0 arch/x86/entry/common.c:290 [<00000000fc58525a>] entry_SYSCALL_64_after_hwframe+0x44/0xa9