40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  203.371689] md: md_import_device returned -22
[  203.378095] md: invalid raid superblock magic on mtdblock0
[  203.384513] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  203.396220] md: md_import_device returned -22
[  203.411065] md: invalid raid superblock magic on mtdblock0
13:12:35 executing program 3:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:35 executing program 5:
r0 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:35 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
socket$inet6_sctp(0xa, 0x801, 0x84)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  203.418475] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  203.468318] md: md_import_device returned -22
13:12:35 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:35 executing program 5:
r0 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:35 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  203.491031] md: invalid raid superblock magic on mtdblock0
[  203.498229] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  203.526230] md: md_import_device returned -22
[  203.552859] md: invalid raid superblock magic on mtdblock0
[  203.559440] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:35 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  203.603610] md: md_import_device returned -22
13:12:35 executing program 3:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:35 executing program 5:
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:35 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  203.627314] md: invalid raid superblock magic on mtdblock0
[  203.633452] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  203.664917] md: md_import_device returned -22
13:12:36 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:36 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  203.682094] md: invalid raid superblock magic on mtdblock0
[  203.705531] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:36 executing program 5:
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:36 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  203.738595] md: md_import_device returned -22
[  203.758643] md: invalid raid superblock magic on mtdblock0
13:12:36 executing program 3:
perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:36 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  203.800225] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  203.830077] md: md_import_device returned -22
13:12:36 executing program 5:
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  203.863486] md: invalid raid superblock magic on mtdblock0
[  203.870590] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  203.899752] md: md_import_device returned -22
13:12:36 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:36 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  203.913427] md: invalid raid superblock magic on mtdblock0
[  203.935476] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:36 executing program 3:
perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:36 executing program 5:
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

[  203.969488] md: md_import_device returned -22
13:12:36 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  203.992359] md: invalid raid superblock magic on mtdblock0
[  204.004194] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  204.029418] md: md_import_device returned -22
13:12:36 executing program 5:
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

13:12:36 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:36 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:36 executing program 3:
perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:36 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.216477] md: invalid raid superblock magic on mtdblock0
[  204.226680] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:36 executing program 5:
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

13:12:36 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.258986] md: md_import_device returned -22
13:12:36 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.285284] md: invalid raid superblock magic on mtdblock0
[  204.291321] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:36 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  204.335453] md: md_import_device returned -22
13:12:36 executing program 5:
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})

[  204.357280] md: invalid raid superblock magic on mtdblock0
[  204.375536] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:36 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:36 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.409013] md: md_import_device returned -22
13:12:36 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:36 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.438541] md: invalid raid superblock magic on mtdblock0
[  204.458207] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  204.494571] md: md_import_device returned -22
13:12:36 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:36 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.516080] md: could not open unknown-block(0,0).
[  204.521095] md: md_import_device returned -6
[  204.541640] md: invalid raid superblock magic on mtdblock0
13:12:36 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  204.575590] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:36 executing program 5:
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})

13:12:36 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  204.622067] md: md_import_device returned -22
[  204.638894] md: invalid raid superblock magic on mtdblock0
[  204.655751] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:37 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.730186] md: md_import_device returned -22
13:12:37 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:37 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.780710] md: invalid raid superblock magic on mtdblock0
[  204.791242] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  204.817310] md: md_import_device returned -22
[  204.833599] md: could not open unknown-block(0,0).
[  204.841745] md: md_import_device returned -6
13:12:37 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:37 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.875904] md: invalid raid superblock magic on mtdblock0
[  204.882438] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:37 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:37 executing program 5:
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})

13:12:37 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  204.978750] md: md_import_device returned -22
13:12:37 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  204.998964] md: invalid raid superblock magic on mtdblock0
[  205.018177] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  205.049797] md: md_import_device returned -22
[  205.060634] md: could not open unknown-block(0,0).
[  205.066551] md: md_import_device returned -6
13:12:37 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  205.098927] md: invalid raid superblock magic on mtdblock0
[  205.108816] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:37 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  205.154988] md: md_import_device returned -22
[  205.173620] md: invalid raid superblock magic on mtdblock0
13:12:37 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:37 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  205.189303] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  205.244809] md: md_import_device returned -22
[  205.259989] md: invalid raid superblock magic on mtdblock0
[  205.266559] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:37 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:37 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  205.304948] md: md_import_device returned -22
[  205.317187] md: invalid raid superblock magic on mtdblock0
[  205.327312] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:37 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:37 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  205.383222] md: md_import_device returned -22
13:12:37 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:37 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:37 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:37 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  205.513994] md: invalid raid superblock magic on mtdblock0
[  205.540742] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:37 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  205.568960] md: md_import_device returned -22
13:12:37 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  205.602570] md: invalid raid superblock magic on mtdblock0
[  205.612796] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:37 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:37 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:37 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  205.647677] md: md_import_device returned -22
[  205.666081] md: invalid raid superblock magic on mtdblock0
[  205.674911] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:38 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  205.721912] md: md_import_device returned -22
13:12:38 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:38 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  205.759905] md: invalid raid superblock magic on mtdblock0
[  205.773162] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  205.789604] md: md_import_device returned -22
[  205.802760] md: invalid raid superblock magic on mtdblock0
13:12:38 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  205.812501] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  205.842952] md: md_import_device returned -22
13:12:38 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  205.880169] md: invalid raid superblock magic on mtdblock0
[  205.888621] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:38 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:38 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  205.958402] md: md_import_device returned -22
[  205.976416] md: invalid raid superblock magic on mtdblock0
[  205.986971] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  206.022293] md: md_import_device returned -22
[  206.037716] md: invalid raid superblock magic on mtdblock0
[  206.048159] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:38 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

[  206.097395] md: md_import_device returned -22
13:12:38 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:38 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  206.118756] md: invalid raid superblock magic on mtdblock0
[  206.141991] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  206.171820] md: md_import_device returned -22
13:12:38 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

13:12:38 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:38 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

13:12:38 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  206.397315] md: invalid raid superblock magic on mtdblock0
[  206.416793] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  206.451867] md: md_import_device returned -22
[  206.492822] md: invalid raid superblock magic on mtdblock0
[  206.500065] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:38 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})

[  206.544605] md: md_import_device returned -22
[  206.563987] md: invalid raid superblock magic on mtdblock0
[  206.578627] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:38 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:38 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  206.605275] md: md_import_device returned -22
[  206.624151] md: invalid raid superblock magic on mtdblock0
[  206.637121] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  206.680118] md: md_import_device returned -22
[  206.704986] md: could not open unknown-block(0,0).
[  206.710686] md: md_import_device returned -6
13:12:39 executing program 0:
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:39 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  206.763406] md: invalid raid superblock magic on mtdblock0
[  206.781882] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:39 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})

13:12:39 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  206.837951] md: md_import_device returned -22
13:12:39 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:39 executing program 0:
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  206.863786] md: invalid raid superblock magic on mtdblock0
[  206.893678] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:39 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  206.933012] md: md_import_device returned -22
13:12:39 executing program 0:
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  206.969164] md: invalid raid superblock magic on mtdblock0
[  206.984879] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:39 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:39 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  207.056084] md: md_import_device returned -22
13:12:39 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  207.082846] md: could not open unknown-block(0,0).
[  207.089186] md: md_import_device returned -6
[  207.108867] md: invalid raid superblock magic on mtdblock0
[  207.118185] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:39 executing program 1:
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})

13:12:39 executing program 0:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  207.176474] md: md_import_device returned -22
13:12:39 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:39 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:39 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  207.217461] md: invalid raid superblock magic on mtdblock0
[  207.229484] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:39 executing program 0:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  207.275849] md: md_import_device returned -22
[  207.291953] md: could not open unknown-block(0,0).
[  207.299007] md: md_import_device returned -6
13:12:39 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:39 executing program 0:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:39 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:39 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:39 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  207.475192] md: invalid raid superblock magic on mtdblock0
13:12:39 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  207.519599] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  207.564352] md: md_import_device returned -22
13:12:39 executing program 0:
perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:39 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  207.599193] md: invalid raid superblock magic on mtdblock0
[  207.607664] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:39 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  207.661672] md: md_import_device returned -22
13:12:40 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:40 executing program 0:
perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  207.737564] md: invalid raid superblock magic on mtdblock0
[  207.743236] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  207.773911] md: md_import_device returned -22
13:12:40 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:40 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  207.786024] md: invalid raid superblock magic on mtdblock0
[  207.791734] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:40 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  207.852215] md: md_import_device returned -22
13:12:40 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:40 executing program 0:
perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  207.909258] md: invalid raid superblock magic on mtdblock0
[  207.940819] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:40 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.002626] md: md_import_device returned -22
13:12:40 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:40 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.041509] md: invalid raid superblock magic on mtdblock0
[  208.050867] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:40 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:40 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.101871] md: md_import_device returned -22
[  208.162550] md: invalid raid superblock magic on mtdblock0
[  208.179437] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:40 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:40 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.250799] md: md_import_device returned -22
13:12:40 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:40 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:40 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.283376] md: invalid raid superblock magic on mtdblock0
[  208.299379] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  208.356568] md: md_import_device returned -22
13:12:40 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.398121] md: invalid raid superblock magic on mtdblock0
[  208.406412] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:40 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.485741] md: md_import_device returned -22
13:12:40 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:40 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:40 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:40 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:40 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.589150] md: invalid raid superblock magic on mtdblock0
[  208.609757] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  208.673159] md: md_import_device returned -22
13:12:41 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.702478] md: invalid raid superblock magic on mtdblock0
[  208.737236] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:41 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  208.798452] md: md_import_device returned -22
13:12:41 executing program 4:
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:41 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580), 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.831455] md: invalid raid superblock magic on mtdblock0
[  208.848324] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:41 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.890753] md: md_import_device returned -22
13:12:41 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  208.919963] md: invalid raid superblock magic on mtdblock0
[  208.941887] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:41 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580), 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:41 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  208.973002] md: md_import_device returned -22
[  209.013926] md: invalid raid superblock magic on mtdblock0
[  209.023424] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:41 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.072554] md: md_import_device returned -22
[  209.083019] md: invalid raid superblock magic on mtdblock0
[  209.090308] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  209.101432] md: md_import_device returned -22
[  209.108729] md: invalid raid superblock magic on mtdblock0
[  209.115793] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:41 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  209.143248] md: md_import_device returned -22
13:12:41 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.178647] md: invalid raid superblock magic on mtdblock0
[  209.217347] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:41 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:41 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:41 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580), 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.260612] md: md_import_device returned -22
[  209.271573] md: invalid raid superblock magic on mtdblock0
13:12:41 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.310140] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  209.342234] md: md_import_device returned -22
13:12:41 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.370154] md: invalid raid superblock magic on mtdblock0
[  209.380693] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:41 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:41 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.445588] md: md_import_device returned -22
13:12:41 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:41 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:41 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  209.498036] md: invalid raid superblock magic on mtdblock0
[  209.522380] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  209.552908] md: md_import_device returned -22
13:12:41 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:41 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  209.601265] md: invalid raid superblock magic on mtdblock0
[  209.626347] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:41 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.703813] md: md_import_device returned -22
13:12:42 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.755346] md: invalid raid superblock magic on mtdblock0
[  209.779381] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:42 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  209.831100] md: md_import_device returned -22
[  209.846563] md: invalid raid superblock magic on mtdblock0
13:12:42 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.872429] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:42 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  209.979159] md: md_import_device returned -22
[  209.996281] md: invalid raid superblock magic on mtdblock0
[  210.003580] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:42 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:42 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  210.045794] md: md_import_device returned -22
[  210.086479] md: invalid raid superblock magic on mtdblock0
[  210.115893] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:42 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:42 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:42 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  210.169927] md: md_import_device returned -22
[  210.188400] md: invalid raid superblock magic on mtdblock0
[  210.197096] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  210.246653] md: md_import_device returned -22
13:12:42 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  210.270667] md: invalid raid superblock magic on mtdblock0
[  210.279332] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  210.303543] md: md_import_device returned -22
13:12:42 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  210.334131] md: invalid raid superblock magic on mtdblock0
[  210.350360] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:42 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:42 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  210.448313] md: md_import_device returned -22
13:12:42 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

[  210.522324] md: invalid raid superblock magic on mtdblock0
[  210.535813] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:42 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  210.605694] md: md_import_device returned -22
[  210.623140] md: invalid raid superblock magic on mtdblock0
13:12:42 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:42 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  210.651317] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  210.711183] md: md_import_device returned -22
13:12:43 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

13:12:43 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

13:12:43 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  210.921278] md: invalid raid superblock magic on mtdblock0
[  210.944727] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:43 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  211.002393] md: md_import_device returned -22
13:12:43 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  211.027420] md: invalid raid superblock magic on mtdblock0
[  211.046106] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:43 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  211.073510] md: md_import_device returned -22
13:12:43 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})

13:12:43 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  211.215737] md: invalid raid superblock magic on mtdblock0
[  211.249722] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:43 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r0, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})

[  211.324523] md: md_import_device returned -22
[  211.342769] md: could not open unknown-block(0,0).
[  211.348232] md: md_import_device returned -6
13:12:43 executing program 5:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

13:12:43 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)

[  211.493034] md: could not open unknown-block(0,0).
[  211.506130] md: md_import_device returned -6
13:12:43 executing program 4:
socket$inet6(0xa, 0x0, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})

13:12:43 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)

13:12:43 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:43 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)

[  211.660552] md: could not open unknown-block(0,0).
[  211.683210] md: md_import_device returned -6
[  211.705768] md: invalid raid superblock magic on mtdblock0
[  211.713012] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:44 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580), 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  211.756180] md: md_import_device returned -22
13:12:44 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  211.836878] md: invalid raid superblock magic on mtdblock0
[  211.862611] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:44 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)

13:12:44 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)

[  211.930786] md: md_import_device returned -22
13:12:44 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  211.959582] md: invalid raid superblock magic on mtdblock0
[  211.981625] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  212.028910] md: md_import_device returned -22
13:12:44 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580), 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.057154] md: invalid raid superblock magic on mtdblock0
[  212.063094] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:44 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)

[  212.126720] md: md_import_device returned -22
13:12:44 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.163872] md: invalid raid superblock magic on mtdblock0
[  212.170198] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  212.198312] md: md_import_device returned -22
13:12:44 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)

13:12:44 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.217634] md: invalid raid superblock magic on mtdblock0
[  212.255364] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  212.292813] md: md_import_device returned -22
13:12:44 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580), 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.367828] md: invalid raid superblock magic on mtdblock0
[  212.381300] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:44 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.463870] md: md_import_device returned -22
13:12:44 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580), 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:44 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.603918] md: invalid raid superblock magic on mtdblock0
13:12:45 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.682386] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  212.717617] md: md_import_device returned -22
13:12:45 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.757950] md: invalid raid superblock magic on mtdblock0
[  212.775451] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:45 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580), 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.848124] md: md_import_device returned -22
[  212.865211] md: invalid raid superblock magic on mtdblock0
13:12:45 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.897577] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  212.936775] md: md_import_device returned -22
13:12:45 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  212.966843] md: invalid raid superblock magic on mtdblock0
[  212.984638] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  213.016838] md: md_import_device returned -22
13:12:45 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580), 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.048097] md: invalid raid superblock magic on mtdblock0
[  213.056691] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:45 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.139022] md: md_import_device returned -22
[  213.155890] md: invalid raid superblock magic on mtdblock0
[  213.161562] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:45 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.216702] md: md_import_device returned -22
13:12:45 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.274768] md: invalid raid superblock magic on mtdblock0
[  213.280884] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  213.314740] md: md_import_device returned -22
13:12:45 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(0xffffffffffffffff, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.322840] md: invalid raid superblock magic on mtdblock0
[  213.331927] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  213.356565] md: md_import_device returned -22
13:12:45 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.437113] md: invalid raid superblock magic on mtdblock0
[  213.465791] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:45 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.519794] md: md_import_device returned -22
13:12:45 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:45 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.656949] md: invalid raid superblock magic on mtdblock0
[  213.688307] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  213.751350] md: md_import_device returned -22
13:12:46 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.815743] md: invalid raid superblock magic on mtdblock0
[  213.846819] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  213.863894] md: md_import_device returned -22
13:12:46 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.886268] md: invalid raid superblock magic on mtdblock0
[  213.911418] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  213.952126] md: md_import_device returned -22
13:12:46 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x0)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  213.982772] md: invalid raid superblock magic on mtdblock0
[  214.000701] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  214.028245] md: md_import_device returned -22
13:12:46 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  214.041561] md: invalid raid superblock magic on mtdblock0
[  214.073860] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  214.132258] md: md_import_device returned -22
[  214.172719] md: invalid raid superblock magic on mtdblock0
[  214.188047] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:46 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  214.225995] md: md_import_device returned -22
[  214.247753] md: invalid raid superblock magic on mtdblock0
[  214.265746] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:46 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  214.329121] md: md_import_device returned -22
13:12:46 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  214.355559] md: invalid raid superblock magic on mtdblock0
[  214.362442] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  214.392921] md: md_import_device returned -22
[  214.586105] md: invalid raid superblock magic on mtdblock0
[  214.609669] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:46 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:46 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  214.650086] md: md_import_device returned -22
[  214.657503] md: invalid raid superblock magic on mtdblock0
[  214.674369] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:47 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  214.765519] md: md_import_device returned -22
[  214.787335] md: invalid raid superblock magic on mtdblock0
[  214.794747] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:47 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  214.837630] md: md_import_device returned -22
13:12:47 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  214.884023] md: invalid raid superblock magic on mtdblock0
[  214.897536] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  214.954146] md: md_import_device returned -22
13:12:47 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.004027] md: invalid raid superblock magic on mtdblock0
[  215.030368] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:47 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.107222] md: md_import_device returned -22
13:12:47 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.133965] md: invalid raid superblock magic on mtdblock0
[  215.151185] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  215.183098] md: md_import_device returned -22
13:12:47 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, 0x0, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.220779] md: invalid raid superblock magic on mtdblock0
[  215.248393] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:47 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.324462] md: md_import_device returned -22
13:12:47 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.383012] md: invalid raid superblock magic on mtdblock0
[  215.398443] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:47 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.447297] md: md_import_device returned -22
13:12:47 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.475580] md: invalid raid superblock magic on mtdblock0
[  215.481435] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:47 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.527688] md: md_import_device returned -22
13:12:47 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:47 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.593443] md: invalid raid superblock magic on mtdblock0
[  215.599487] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  215.643602] md: md_import_device returned -22
13:12:47 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.666969] md: invalid raid superblock magic on mtdblock0
[  215.676916] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  215.705341] md: md_import_device returned -22
13:12:48 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.733265] md: invalid raid superblock magic on mtdblock0
13:12:48 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.779319] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:48 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.850613] md: md_import_device returned -22
13:12:48 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.886379] md: invalid raid superblock magic on mtdblock0
[  215.904710] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:48 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  215.990613] md: md_import_device returned -22
13:12:48 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.038824] md: invalid raid superblock magic on mtdblock0
[  216.068207] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:48 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.108486] md: md_import_device returned -22
[  216.119880] md: invalid raid superblock magic on mtdblock0
[  216.128642] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:48 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.190736] md: md_import_device returned -22
13:12:48 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.250697] md: invalid raid superblock magic on mtdblock0
[  216.275235] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:48 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.358528] md: md_import_device returned -22
13:12:48 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.412888] md: invalid raid superblock magic on mtdblock0
[  216.419114] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  216.447117] md: md_import_device returned -22
13:12:48 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.526284] md: invalid raid superblock magic on mtdblock0
13:12:48 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.574017] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:48 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:48 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.640771] md: md_import_device returned -22
[  216.658143] md: invalid raid superblock magic on mtdblock0
[  216.669208] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  216.736504] md: md_import_device returned -22
13:12:49 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.762968] md: invalid raid superblock magic on mtdblock0
[  216.775199] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:49 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.818396] md: md_import_device returned -22
13:12:49 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.846855] md: invalid raid superblock magic on mtdblock0
[  216.865773] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  216.903514] md: md_import_device returned -22
13:12:49 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  216.934534] md: invalid raid superblock magic on mtdblock0
[  216.941857] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  216.992880] md: md_import_device returned -22
13:12:49 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.017330] md: invalid raid superblock magic on mtdblock0
[  217.024319] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:49 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.069268] md: md_import_device returned -22
13:12:49 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.116589] md: invalid raid superblock magic on mtdblock0
[  217.128991] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:49 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.170659] md: md_import_device returned -22
[  217.210086] md: invalid raid superblock magic on mtdblock0
[  217.245727] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:49 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.312280] md: md_import_device returned -22
[  217.324612] md: invalid raid superblock magic on mtdblock0
[  217.343996] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:49 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.415308] md: md_import_device returned -22
13:12:49 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.451876] md: invalid raid superblock magic on mtdblock0
[  217.475095] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  217.546471] md: md_import_device returned -22
[  217.565239] md: invalid raid superblock magic on mtdblock0
13:12:49 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.589123] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  217.633120] md: md_import_device returned -22
13:12:49 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, 0x0, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:49 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.706534] md: invalid raid superblock magic on mtdblock0
13:12:50 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.758136] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:50 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.811798] md: md_import_device returned -22
13:12:50 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.836051] md: invalid raid superblock magic on mtdblock0
[  217.851294] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:50 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.888796] md: md_import_device returned -22
13:12:50 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  217.926952] md: invalid raid superblock magic on mtdblock0
[  217.999799] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:50 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.097654] md: md_import_device returned -22
[  218.117244] md: invalid raid superblock magic on mtdblock0
[  218.125612] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  218.171472] md: md_import_device returned -22
13:12:50 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.206137] md: invalid raid superblock magic on mtdblock0
[  218.230123] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:50 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={0x0, 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.300300] md: md_import_device returned -22
13:12:50 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.336731] md: invalid raid superblock magic on mtdblock0
[  218.347809] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:50 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.427713] md: md_import_device returned -22
[  218.447209] md: invalid raid superblock magic on mtdblock0
[  218.454540] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  218.475106] md: md_import_device returned -22
13:12:50 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.510455] md: invalid raid superblock magic on mtdblock0
[  218.542087] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:50 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.567441] md: md_import_device returned -22
[  218.583217] md: invalid raid superblock magic on mtdblock0
13:12:50 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:50 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.620557] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  218.648538] md: md_import_device returned -22
[  218.687238] md: invalid raid superblock magic on mtdblock0
[  218.706447] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:51 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.753112] md: md_import_device returned -22
13:12:51 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.799450] md: invalid raid superblock magic on mtdblock0
[  218.810816] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:51 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.840584] md: md_import_device returned -22
13:12:51 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:51 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.874030] md: invalid raid superblock magic on mtdblock0
[  218.879744] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:51 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:51 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  218.947821] md: md_import_device returned -22
[  218.961267] md: invalid raid superblock magic on mtdblock0
[  218.982466] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  219.038515] md: md_import_device returned -22
13:12:51 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:51 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.058726] md: invalid raid superblock magic on mtdblock0
[  219.068243] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:51 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.117643] md: md_import_device returned -22
[  219.139497] md: invalid raid superblock magic on mtdblock0
[  219.147777] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  219.182125] md: md_import_device returned -22
13:12:51 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
close(0xffffffffffffffff)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:51 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.203748] md: invalid raid superblock magic on mtdblock0
[  219.209576] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:51 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:51 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:51 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.273454] md: md_import_device returned -22
[  219.312164] md: invalid raid superblock magic on mtdblock0
[  219.328123] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:51 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:51 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff000000000000"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.370362] md: md_import_device returned -22
13:12:51 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.408887] md: invalid raid superblock magic on mtdblock0
[  219.437998] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:51 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:51 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.510085] md: md_import_device returned -22
13:12:51 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:51 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.544891] md: invalid raid superblock magic on mtdblock0
[  219.556105] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  219.614669] md: md_import_device returned -22
[  219.644195] md: invalid raid superblock magic on mtdblock0
[  219.676737] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:52 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
close(0xffffffffffffffff)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.701354] md: md_import_device returned -22
13:12:52 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.753076] md: invalid raid superblock magic on mtdblock0
[  219.759262] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  219.819017] md: md_import_device returned -22
[  219.852893] md: invalid raid superblock magic on mtdblock0
[  219.859172] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:52 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/34], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  219.893744] md: md_import_device returned -22
[  219.905932] md: invalid raid superblock magic on mtdblock0
[  219.930118] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  219.963597] md: md_import_device returned -22
13:12:52 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 1:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
close(0xffffffffffffffff)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.017768] md: invalid raid superblock magic on mtdblock0
[  220.039014] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:52 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.098525] md: md_import_device returned -22
13:12:52 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 1:
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.190191] md: invalid raid superblock magic on mtdblock0
[  220.201086] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:52 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 1:
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.295448] md: md_import_device returned -22
[  220.311977] md: invalid raid superblock magic on mtdblock0
[  220.319645] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:52 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.401780] md: md_import_device returned -22
13:12:52 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.442564] md: invalid raid superblock magic on mtdblock0
13:12:52 executing program 1:
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.486502] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  220.525709] md: md_import_device returned -22
13:12:52 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.538128] md: invalid raid superblock magic on mtdblock0
[  220.554919] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:52 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.584031] md: md_import_device returned -22
[  220.602476] md: invalid raid superblock magic on mtdblock0
13:12:52 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:52 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.640612] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  220.668364] md: md_import_device returned -22
[  220.723108] md: invalid raid superblock magic on mtdblock0
[  220.746135] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:53 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffff"], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.776670] md: md_import_device returned -22
13:12:53 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.799830] md: invalid raid superblock magic on mtdblock0
[  220.806777] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:53 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:53 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.866738] md: md_import_device returned -22
13:12:53 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:53 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.905264] md: invalid raid superblock magic on mtdblock0
[  220.924991] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:53 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  220.974898] md: md_import_device returned -22
13:12:53 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:53 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.016233] md: invalid raid superblock magic on mtdblock0
[  221.038305] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:53 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.073123] md: md_import_device returned -22
[  221.087563] md: invalid raid superblock magic on mtdblock0
[  221.096444] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:53 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.158357] md: md_import_device returned -22
13:12:53 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:53 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.187636] md: invalid raid superblock magic on mtdblock0
[  221.199566] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:53 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:53 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.263762] md: md_import_device returned -22
13:12:53 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
r0 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:53 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.295899] md: invalid raid superblock magic on mtdblock0
[  221.326127] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  221.380588] md: md_import_device returned -22
13:12:53 executing program 1:
perf_event_open(0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:53 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.407980] md: invalid raid superblock magic on mtdblock0
[  221.439567] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:53 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:53 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.495693] md: md_import_device returned -22
13:12:53 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:53 executing program 1:
perf_event_open(0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.543637] md: invalid raid superblock magic on mtdblock0
[  221.575560] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:53 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.609841] md: md_import_device returned -22
[  221.627413] md: invalid raid superblock magic on mtdblock0
13:12:53 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:53 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.667283] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  221.694111] md: md_import_device returned -22
[  221.712999] md: invalid raid superblock magic on mtdblock0
[  221.725693] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  221.738031] md: md_import_device returned -22
[  221.753815] md: invalid raid superblock magic on mtdblock0
13:12:54 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.767684] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:54 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:54 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/36], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.866302] md: md_import_device returned -22
13:12:54 executing program 1:
perf_event_open(0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  221.890031] md: invalid raid superblock magic on mtdblock0
[  221.927625] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:54 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  221.979567] md: md_import_device returned -22
13:12:54 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.004673] md: invalid raid superblock magic on mtdblock0
[  222.034550] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:54 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.068950] md: md_import_device returned -22
13:12:54 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.108219] md: invalid raid superblock magic on mtdblock0
[  222.120384] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  222.202189] md: md_import_device returned -22
13:12:54 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.222369] md: invalid raid superblock magic on mtdblock0
[  222.243743] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:54 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.297716] md: md_import_device returned -22
[  222.324539] md: invalid raid superblock magic on mtdblock0
[  222.337083] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  222.378563] md: md_import_device returned -22
13:12:54 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r1 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r1, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.399172] md: invalid raid superblock magic on mtdblock0
[  222.405043] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:54 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.451690] md: md_import_device returned -22
13:12:54 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.497109] md: invalid raid superblock magic on mtdblock0
[  222.506737] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:54 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.543488] md: md_import_device returned -22
13:12:54 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:54 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.577903] md: invalid raid superblock magic on mtdblock0
[  222.601340] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:54 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.650047] md: md_import_device returned -22
[  222.668809] md: invalid raid superblock magic on mtdblock0
[  222.678372] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:55 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.715976] md: md_import_device returned -22
13:12:55 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x0, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:55 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:55 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.776006] md: invalid raid superblock magic on mtdblock0
[  222.811359] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  222.847847] md: md_import_device returned -22
13:12:55 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:55 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180), 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:55 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:55 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.914514] md: invalid raid superblock magic on mtdblock0
[  222.920899] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:55 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  222.972613] md: md_import_device returned -22
13:12:55 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.009058] md: invalid raid superblock magic on mtdblock0
[  223.045102] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:55 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180), 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.081124] md: md_import_device returned -22
13:12:55 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:55 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:55 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
socket$inet6(0xa, 0x400000000001, 0x0)
close(0xffffffffffffffff)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.111360] md: invalid raid superblock magic on mtdblock0
[  223.120331] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  223.183658] md: md_import_device returned -22
13:12:55 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180), 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:55 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.219589] md: invalid raid superblock magic on mtdblock0
[  223.230072] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:55 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:55 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

[  223.296685] md: md_import_device returned -22
13:12:55 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.349301] md: invalid raid superblock magic on mtdblock0
[  223.363587] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:55 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.413072] md: md_import_device returned -22
[  223.429844] md: invalid raid superblock magic on mtdblock0
[  223.441974] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:55 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, 0x0, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.467955] md: md_import_device returned -22
[  223.484589] md: invalid raid superblock magic on mtdblock0
[  223.504838] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:55 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x0, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.527470] md: md_import_device returned -22
13:12:55 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x0)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.550260] md: invalid raid superblock magic on mtdblock0
[  223.567363] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:55 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, 0x0, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.617571] md: md_import_device returned -22
13:12:55 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:55 executing program 4:
r0 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r0, 0x40140921, 0x0)

13:12:56 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r2 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r2, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r3 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r3, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r2, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.695712] md: invalid raid superblock magic on mtdblock0
[  223.717854] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:56 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, 0x0, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.763319] md: md_import_device returned -22
13:12:56 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.788130] md: invalid raid superblock magic on mtdblock0
[  223.796370] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  223.852981] md: md_import_device returned -22
13:12:56 executing program 4:
perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.878132] md: invalid raid superblock magic on mtdblock0
[  223.891804] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:56 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={0x0}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x0, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.936703] md: md_import_device returned -22
13:12:56 executing program 5:
perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  223.965241] md: invalid raid superblock magic on mtdblock0
[  223.981213] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:56 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.030868] md: md_import_device returned -22
[  224.041953] md: invalid raid superblock magic on mtdblock0
13:12:56 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={0x0}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 4:
perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.073437] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  224.119940] md: md_import_device returned -22
13:12:56 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.145939] md: invalid raid superblock magic on mtdblock0
[  224.154002] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:56 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.203069] md: md_import_device returned -22
13:12:56 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x0, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.256904] md: invalid raid superblock magic on mtdblock0
[  224.271812] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:56 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(0xffffffffffffffff, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={0x0}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.375573] md: md_import_device returned -22
[  224.386517] md: invalid raid superblock magic on mtdblock0
[  224.393787] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  224.422066] md: md_import_device returned -22
[  224.443620] md: invalid raid superblock magic on mtdblock0
[  224.451941] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:56 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={0x0}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.544166] md: md_import_device returned -22
13:12:56 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:56 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={0x0}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.611023] md: invalid raid superblock magic on mtdblock0
[  224.637542] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  224.675313] md: md_import_device returned -22
13:12:57 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x0, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB, @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.767173] md: invalid raid superblock magic on mtdblock0
[  224.787372] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:57 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  224.828373] md: md_import_device returned -22
13:12:57 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:57 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x0, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.000478] md: invalid raid superblock magic on mtdblock0
[  225.036595] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:57 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.082395] md: md_import_device returned -22
13:12:57 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.130109] md: invalid raid superblock magic on mtdblock0
[  225.151422] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:57 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(0xffffffffffffffff, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x0, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.188480] md: md_import_device returned -22
13:12:57 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, 0x0)
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.286994] md: invalid raid superblock magic on mtdblock0
[  225.320199] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:57 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r2, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})

13:12:57 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.383385] md: md_import_device returned -22
13:12:57 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.414025] md: invalid raid superblock magic on mtdblock0
[  225.437849] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:57 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, 0x0)
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 2:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x0, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.471986] md: md_import_device returned -22
[  225.490837] md: invalid raid superblock magic on mtdblock0
[  225.496539] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  225.532917] md: md_import_device returned -22
13:12:57 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, 0x0, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.557743] md: invalid raid superblock magic on mtdblock0
[  225.563808] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
13:12:57 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c80", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:57 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180), 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.630618] md: md_import_device returned -22
13:12:58 executing program 4:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x0, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:58 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, 0x0)
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.720738] ==================================================================
[  225.728292] BUG: KASAN: use-after-free in disk_unblock_events+0x4b/0x50
[  225.735233] Read of size 8 at addr ffff88803b3e1cc8 by task syz-executor.2/12223
[  225.742814] 
[  225.744455] CPU: 1 PID: 12223 Comm: syz-executor.2 Not tainted 4.14.180-syzkaller #0
[  225.752867] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  225.763221] Call Trace:
[  225.765936]  dump_stack+0x13e/0x194
[  225.770270]  ? disk_unblock_events+0x4b/0x50
[  225.774868]  print_address_description.cold+0x7c/0x1e2
[  225.777224] md: invalid raid superblock magic on mtdblock0
[  225.780620]  ? disk_unblock_events+0x4b/0x50
[  225.780636]  kasan_report.cold+0xa9/0x2ae
[  225.780650]  disk_unblock_events+0x4b/0x50
[  225.780660]  __blkdev_get+0x79c/0x10d0
[  225.780675]  ? __blkdev_put+0x6a0/0x6a0
[  225.780685]  ? retint_kernel+0x2d/0x2d
[  225.780698]  blkdev_get+0x84/0x8a0
[  225.780711]  ? lock_acquire+0x1ec/0x3f0
13:12:58 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x0, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  225.780720]  ? bd_may_claim+0xd0/0xd0
[  225.780727]  ? lock_downgrade+0x6e0/0x6e0
[  225.780740]  ? inode_has_perm.isra.0+0x1d0/0x1d0
[  225.815120] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  225.818852]  ? do_raw_spin_unlock+0x164/0x250
[  225.818866]  ? _raw_spin_unlock+0x29/0x40
[  225.818881]  blkdev_open+0x1cc/0x250
[  225.818893]  ? security_file_open+0x82/0x190
[  225.818907]  do_dentry_open+0x732/0xe90
[  225.861774]  ? bd_acquire+0x2c0/0x2c0
[  225.866071]  ? __inode_permission+0x7c/0x300
[  225.870869]  vfs_open+0x105/0x220
[  225.874778]  path_openat+0x8ca/0x3c50
[  225.878681]  ? check_preemption_disabled+0x35/0x240
[  225.883797]  ? path_lookupat.isra.0+0x7b0/0x7b0
[  225.889047]  ? perf_trace_lock+0x109/0x4b0
[  225.893485]  do_filp_open+0x18e/0x250
[  225.898542]  ? may_open_dev+0xe0/0xe0
[  225.902401]  ? lock_downgrade+0x6e0/0x6e0
[  225.906664]  ? do_raw_spin_unlock+0x164/0x250
[  225.911801]  ? __alloc_fd+0x1bf/0x490
[  225.916311]  do_sys_open+0x29d/0x3f0
[  225.920047]  ? filp_open+0x60/0x60
[  225.923679]  ? SyS_clock_settime+0x1a0/0x1a0
[  225.928086]  ? do_syscall_64+0x4c/0x640
[  225.932060]  ? SyS_open+0x30/0x30
[  225.935516]  do_syscall_64+0x1d5/0x640
[  225.938880] md: md_import_device returned -22
[  225.939431]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[  225.939441] RIP: 0033:0x45c829
[  225.939447] RSP: 002b:00007fa0cd950c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[  225.939457] RAX: ffffffffffffffda RBX: 00000000004f7760 RCX: 000000000045c829
[  225.939466] RDX: 0000000000000000 RSI: 0000000020000080 RDI: ffffffffffffff9c
[  225.974510] RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
[  225.981783] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
[  225.989051] R13: 00000000000007ae R14: 00000000004ca5fb R15: 00007fa0cd9516d4
[  225.996347] 
[  225.997971] Allocated by task 12108:
[  226.001683]  save_stack+0x32/0xa0
[  226.005140]  kasan_kmalloc+0xbf/0xe0
[  226.008854]  kmem_cache_alloc_node_trace+0x15a/0x7b0
[  226.013954]  alloc_disk_node+0x5d/0x3d0
[  226.017928]  md_alloc+0x20e/0x810
[  226.021385]  md_probe+0x28/0x40
[  226.024660]  kobj_lookup+0x221/0x410
[  226.028721]  get_gendisk+0x36/0x240
[  226.032349]  __blkdev_get+0x384/0x10d0
[  226.036237]  blkdev_get+0x84/0x8a0
[  226.039776]  blkdev_open+0x1cc/0x250
[  226.043489]  do_dentry_open+0x732/0xe90
[  226.047461]  vfs_open+0x105/0x220
[  226.051112]  path_openat+0x8ca/0x3c50
[  226.054916]  do_filp_open+0x18e/0x250
[  226.058717]  do_sys_open+0x29d/0x3f0
[  226.062436]  do_syscall_64+0x1d5/0x640
[  226.066321]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
13:12:58 executing program 3:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180), 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
setsockopt$inet_sctp6_SCTP_MAXSEG(0xffffffffffffffff, 0x84, 0xd, &(0x7f0000000140)=@assoc_value={0x0, 0x839}, 0x8)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  226.071505] 
[  226.072359] md: invalid raid superblock magic on mtdblock0
[  226.073129] Freed by task 12223:
[  226.073146]  save_stack+0x32/0xa0
[  226.073155]  kasan_slab_free+0x75/0xc0
[  226.073162]  kfree+0xcb/0x260
[  226.073173]  device_release+0xf0/0x1a0
[  226.073181]  kobject_put+0x13e/0x1f0
[  226.073191]  put_disk+0x1f/0x30
[  226.073199]  __blkdev_get+0x707/0x10d0
[  226.073206]  blkdev_get+0x84/0x8a0
[  226.073216]  blkdev_open+0x1cc/0x250
[  226.079075] md: mtdblock0 does not have a valid v0.0 superblock, not importing!
[  226.082188]  do_dentry_open+0x732/0xe90
[  226.082197]  vfs_open+0x105/0x220
[  226.082205]  path_openat+0x8ca/0x3c50
[  226.082213]  do_filp_open+0x18e/0x250
[  226.082222]  do_sys_open+0x29d/0x3f0
[  226.082230]  do_syscall_64+0x1d5/0x640
[  226.082239]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[  226.082242] 
[  226.082249] The buggy address belongs to the object at ffff88803b3e1740
[  226.082249]  which belongs to the cache kmalloc-2048 of size 2048
[  226.082256] The buggy address is located 1416 bytes inside of
[  226.082256]  2048-byte region [ffff88803b3e1740, ffff88803b3e1f40)
[  226.082260] The buggy address belongs to the page:
[  226.082268] page:ffffea0000ecf800 count:1 mapcount:0 mapping:ffff88803b3e0640 index:0x0 compound_mapcount: 0
[  226.082282] flags: 0xfffe0000008100(slab|head)
[  226.082295] raw: 00fffe0000008100 ffff88803b3e0640 0000000000000000 0000000100000003
[  226.082304] raw: ffffea0002824920 ffffea00022044a0 ffff88812fe54c40 0000000000000000
[  226.082307] page dumped because: kasan: bad access detected
[  226.082310] 
[  226.082313] Memory state around the buggy address:
[  226.082320]  ffff88803b3e1b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  226.082327]  ffff88803b3e1c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  226.082334] >ffff88803b3e1c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  226.082337]                                               ^
[  226.082343]  ffff88803b3e1d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  226.082354]  ffff88803b3e1d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  226.101146] md: md_import_device returned -22
13:12:58 executing program 1:
perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
dup2(0xffffffffffffffff, 0xffffffffffffffff)
syz_genetlink_get_family_id$nbd(0x0)
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r1 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r1, 0x40140921, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0})
connect$inet6(0xffffffffffffffff, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:58 executing program 5:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={0x0}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={&(0x7f0000001580)={0x10, 0x0, 0x0, 0x400000}, 0xc, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c800000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/38], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000000300)={&(0x7f0000000180)={0x10, 0x0, 0x0, 0x400}, 0xc, &(0x7f00000002c0)={&(0x7f0000000240)={0x6c, 0x0, 0x8, 0x70bd25, 0x25dfdbfb, {}, [@NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x303}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_INDEX={0x8, 0x1, 0x0}, @NBD_ATTR_TIMEOUT={0xc, 0x4, 0x3f}, @NBD_ATTR_SIZE_BYTES={0xc, 0x2, 0x8}, @NBD_ATTR_DEAD_CONN_TIMEOUT={0xc, 0x8, 0x1}, @NBD_ATTR_BLOCK_SIZE_BYTES={0xc, 0x3, 0x8}, @NBD_ATTR_SERVER_FLAGS={0xc, 0x5, 0x128}]}, 0x6c}, 0x1, 0x0, 0x0, 0x2001c000}, 0x4040)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

13:12:58 executing program 0:
perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0xb07, 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, 0x6, 0x0, @perf_bp={&(0x7f00000001c0)}, 0x0, 0x4}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0)
r0 = socket$inet6(0xa, 0x400000000001, 0x0)
close(r0)
r1 = dup2(0xffffffffffffffff, 0xffffffffffffffff)
ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200)
r2 = syz_genetlink_get_family_id$nbd(0x0)
sendmsg$NBD_CMD_DISCONNECT(0xffffffffffffffff, &(0x7f0000001680)={0x0, 0x0, &(0x7f0000001640)={&(0x7f0000001600)=ANY=[@ANYBLOB="2c8000", @ANYRES16=r2, @ANYBLOB="0a002b74000000000000000c000400fdffffffffffffff00"/37], 0x2c}, 0x1, 0x0, 0x0, 0xfedcdc6ca15aa55a}, 0x40000)
r3 = socket$inet6_sctp(0xa, 0x801, 0x84)
setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r3, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c)
link(&(0x7f0000000340)='./bus\x00', &(0x7f0000000380)='./bus\x00')
clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff)
r4 = openat$md(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0\x00', 0x0, 0x0)
ioctl$BLKPG(r4, 0x40140921, &(0x7f0000000100)={0x0, 0x1f, 0x0, 0x0})
connect$inet6(r3, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0)
sendmsg$AUDIT_SIGNAL_INFO(0xffffffffffffffff, &(0x7f0000000200)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x1000000}, 0xc, &(0x7f00000000c0)={&(0x7f0000000040)={0x10, 0x3f2, 0x2, 0x70bd27, 0x25dfdbfc, "", ["", ""]}, 0x10}, 0x1, 0x0, 0x0, 0x20000001}, 0x40001)

[  226.103659] ==================================================================
[  226.103664] Disabling lock debugging due to kernel taint
[  226.375673] Kernel panic - not syncing: panic_on_warn set ...
[  226.375673] 
[  226.383065] CPU: 1 PID: 12223 Comm: syz-executor.2 Tainted: G    B           4.14.180-syzkaller #0
[  226.392242] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  226.401593] Call Trace:
[  226.404192]  dump_stack+0x13e/0x194
[  226.407819]  panic+0x1f9/0x42d
[  226.411012]  ? add_taint.cold+0x16/0x16
[  226.414982]  ? preempt_schedule_common+0x4a/0xc0
[  226.419730]  ? disk_unblock_events+0x4b/0x50
[  226.424133]  ? ___preempt_schedule+0x16/0x18
[  226.428541]  ? disk_unblock_events+0x4b/0x50
[  226.432947]  kasan_end_report+0x43/0x49
[  226.436917]  kasan_report.cold+0x12f/0x2ae
[  226.441153]  disk_unblock_events+0x4b/0x50
[  226.445384]  __blkdev_get+0x79c/0x10d0
[  226.449273]  ? __blkdev_put+0x6a0/0x6a0
[  226.453242]  ? retint_kernel+0x2d/0x2d
[  226.457127]  blkdev_get+0x84/0x8a0
[  226.460661]  ? lock_acquire+0x1ec/0x3f0
[  226.464632]  ? bd_may_claim+0xd0/0xd0
[  226.468426]  ? lock_downgrade+0x6e0/0x6e0
[  226.472568]  ? inode_has_perm.isra.0+0x1d0/0x1d0
[  226.477326]  ? do_raw_spin_unlock+0x164/0x250
[  226.481819]  ? _raw_spin_unlock+0x29/0x40
[  226.485968]  blkdev_open+0x1cc/0x250
[  226.489681]  ? security_file_open+0x82/0x190
[  226.494087]  do_dentry_open+0x732/0xe90
[  226.498058]  ? bd_acquire+0x2c0/0x2c0
[  226.501858]  ? __inode_permission+0x7c/0x300
[  226.506264]  vfs_open+0x105/0x220
[  226.509715]  path_openat+0x8ca/0x3c50
[  226.513519]  ? check_preemption_disabled+0x35/0x240
[  226.518536]  ? path_lookupat.isra.0+0x7b0/0x7b0
[  226.523207]  ? perf_trace_lock+0x109/0x4b0
[  226.527441]  do_filp_open+0x18e/0x250
[  226.531238]  ? may_open_dev+0xe0/0xe0
[  226.535044]  ? lock_downgrade+0x6e0/0x6e0
[  226.539186]  ? do_raw_spin_unlock+0x164/0x250
[  226.543676]  ? __alloc_fd+0x1bf/0x490
[  226.547475]  do_sys_open+0x29d/0x3f0
[  226.551186]  ? filp_open+0x60/0x60
[  226.554728]  ? SyS_clock_settime+0x1a0/0x1a0
[  226.559144]  ? do_syscall_64+0x4c/0x640
[  226.563119]  ? SyS_open+0x30/0x30
[  226.566572]  do_syscall_64+0x1d5/0x640
[  226.570464]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[  226.575646] RIP: 0033:0x45c829
[  226.578830] RSP: 002b:00007fa0cd950c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[  226.586535] RAX: ffffffffffffffda RBX: 00000000004f7760 RCX: 000000000045c829
[  226.593814] RDX: 0000000000000000 RSI: 0000000020000080 RDI: ffffffffffffff9c
[  226.601081] RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
[  226.608437] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
[  226.615715] R13: 00000000000007ae R14: 00000000004ca5fb R15: 00007fa0cd9516d4
[  226.624491] Kernel Offset: disabled
[  226.628155] Rebooting in 86400 seconds..