shmctl$IPC_RMID(0xffffffffffffffff, 0x0)
shmat(0x0, &(0x7f0000ff9000/0x4000)=nil, 0x0)
r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000140)='/proc/keys\x00', 0x0, 0x0)
r1 = shmget$private(0x0, 0x4000, 0x40, &(0x7f0000ffa000/0x4000)=nil)
shmat(r1, &(0x7f0000ffa000/0x4000)=nil, 0x1000)
sched_setaffinity(0x0, 0x0, 0x0)
r2 = perf_event_open(&(0x7f0000000340)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}, 0x0, 0x0, 0x0, 0x2}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
syz_open_dev$vcsa(&(0x7f0000000080), 0x7, 0x220740)
r3 = syz_open_dev$tty20(0xc, 0x4, 0x1)
ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r2, 0x81f8943c, &(0x7f00000023c0)={0x0, ""/256, <r4=>0x0, <r5=>0x0})
ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r2, 0x81f8943c, &(0x7f00000025c0)={<r6=>0x0})
r7 = creat(0x0, 0x0)
perf_event_open(&(0x7f0000000340)={0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x81, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r7, 0x81f8943c, &(0x7f0000056640)={<r8=>0x0, ""/256, <r9=>0x0, <r10=>0x0})
ioctl$BTRFS_IOC_GET_SUBVOL_INFO(0xffffffffffffffff, 0x81f8943c, &(0x7f00000027c0))
shmat(r1, &(0x7f0000ff7000/0x4000)=nil, 0x2000)
ioctl$BTRFS_IOC_GET_SUBVOL_ROOTREF(r3, 0xd000943d, &(0x7f00000003c0)={0xffffffffffff08b9, [{}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {r6}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {r4}, {}, {}, {0x0, r10}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {r9}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {0x0, r5}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {r8}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {r9}], 0x0, "e46f67d522384d"})
sendfile(r3, r0, 0x0, 0x3fffffffffffc)