perf_event_open(&(0x7f0000001d80)={0x0, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4307, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
syz_open_dev$usbmon(&(0x7f0000000000), 0x0, 0x0)
BUG: memory leak
unreferenced object 0xffff88800cc1b840 (size 32):
  comm "syz-executor.6", pid 33657, jiffies 4296520539 (age 22.278s)
  hex dump (first 32 bytes):
    39 70 2d 66 63 61 6c 6c 2d 63 61 63 68 65 2d 32  9p-fcall-cache-2
    31 37 00 00 00 00 00 00 32 31 34 00 00 00 00 00  17......214.....
  backtrace:
    [<0000000050b881bd>] kstrdup+0x36/0x70 mm/util.c:60
    [<00000000f23c8e04>] kstrdup_const+0x53/0x80 mm/util.c:83
    [<00000000d079a512>] kvasprintf_const+0x10c/0x1a0 lib/kasprintf.c:48
    [<000000006c38daef>] kobject_set_name_vargs+0x56/0x150 lib/kobject.c:297
    [<0000000034d8dcc7>] kobject_add_varg lib/kobject.c:392 [inline]
    [<0000000034d8dcc7>] kobject_init_and_add+0xc9/0x160 lib/kobject.c:481
    [<00000000e817da51>] sysfs_slab_add+0x172/0x200 mm/slub.c:5631
    [<000000009e3c151b>] __kmem_cache_create+0x3db/0x520 mm/slub.c:4450
    [<00000000becfce46>] create_cache mm/slab_common.c:255 [inline]
    [<00000000becfce46>] kmem_cache_create_usercopy+0x1db/0x2f0 mm/slab_common.c:350
    [<00000000ce323bf6>] p9_client_create+0xc6a/0x1230 net/9p/client.c:1074
    [<00000000984aeaf9>] v9fs_session_init+0x1dd/0x1680 fs/9p/v9fs.c:406
    [<00000000f81bac52>] v9fs_mount+0x79/0x8f0 fs/9p/vfs_super.c:126
    [<000000006da1a23d>] legacy_get_tree+0x105/0x220 fs/fs_context.c:593
    [<000000006f403473>] vfs_get_tree+0x8e/0x300 fs/super.c:1572
    [<000000005276d9c1>] do_new_mount fs/namespace.c:3006 [inline]
    [<000000005276d9c1>] path_mount+0x1490/0x21e0 fs/namespace.c:3336
    [<00000000f8e8a269>] do_mount fs/namespace.c:3349 [inline]
    [<00000000f8e8a269>] __do_sys_mount fs/namespace.c:3557 [inline]
    [<00000000f8e8a269>] __se_sys_mount fs/namespace.c:3534 [inline]
    [<00000000f8e8a269>] __x64_sys_mount+0x282/0x300 fs/namespace.c:3534
    [<0000000023abd5be>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46

BUG: memory leak
unreferenced object 0xffff88800cd2bec0 (size 32):
  comm "syz-executor.6", pid 33894, jiffies 4296521217 (age 21.600s)
  hex dump (first 32 bytes):
    39 70 2d 66 63 61 6c 6c 2d 63 61 63 68 65 2d 32  9p-fcall-cache-2
    31 39 00 0c 80 88 ff ff 00 00 00 00 00 00 00 00  19..............
  backtrace:
    [<0000000050b881bd>] kstrdup+0x36/0x70 mm/util.c:60
    [<00000000f23c8e04>] kstrdup_const+0x53/0x80 mm/util.c:83
    [<00000000d079a512>] kvasprintf_const+0x10c/0x1a0 lib/kasprintf.c:48
    [<000000006c38daef>] kobject_set_name_vargs+0x56/0x150 lib/kobject.c:297
    [<0000000034d8dcc7>] kobject_add_varg lib/kobject.c:392 [inline]
    [<0000000034d8dcc7>] kobject_init_and_add+0xc9/0x160 lib/kobject.c:481
    [<00000000e817da51>] sysfs_slab_add+0x172/0x200 mm/slub.c:5631
    [<000000009e3c151b>] __kmem_cache_create+0x3db/0x520 mm/slub.c:4450
    [<00000000becfce46>] create_cache mm/slab_common.c:255 [inline]
    [<00000000becfce46>] kmem_cache_create_usercopy+0x1db/0x2f0 mm/slab_common.c:350
    [<00000000ce323bf6>] p9_client_create+0xc6a/0x1230 net/9p/client.c:1074
    [<00000000984aeaf9>] v9fs_session_init+0x1dd/0x1680 fs/9p/v9fs.c:406
    [<00000000f81bac52>] v9fs_mount+0x79/0x8f0 fs/9p/vfs_super.c:126
    [<000000006da1a23d>] legacy_get_tree+0x105/0x220 fs/fs_context.c:593
    [<000000006f403473>] vfs_get_tree+0x8e/0x300 fs/super.c:1572
    [<000000005276d9c1>] do_new_mount fs/namespace.c:3006 [inline]
    [<000000005276d9c1>] path_mount+0x1490/0x21e0 fs/namespace.c:3336
    [<00000000f8e8a269>] do_mount fs/namespace.c:3349 [inline]
    [<00000000f8e8a269>] __do_sys_mount fs/namespace.c:3557 [inline]
    [<00000000f8e8a269>] __se_sys_mount fs/namespace.c:3534 [inline]
    [<00000000f8e8a269>] __x64_sys_mount+0x282/0x300 fs/namespace.c:3534
    [<0000000023abd5be>] do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46

BUG: leak checking failed