Extracting prog: 2m48.121667529s
Minimizing prog: 40m43.353525658s
Simplifying prog options: 0s
Extracting C: 36.388905724s
Simplifying C: 13m23.877422616s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-setsockopt$IPT_SO_SET_REPLACE-getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic
detailed listing:
executing program 0:
socket$netlink(0x10, 0x3, 0x0)
setsockopt$IPT_SO_SET_REPLACE(0xffffffffffffffff, 0x0, 0x40, 0x0, 0x0)
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-setsockopt$IPT_SO_SET_REPLACE-getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT-syz_init_net_socket$nl_generic
detailed listing:
executing program 0:
socket$netlink(0x10, 0x3, 0x0)
setsockopt$IPT_SO_SET_REPLACE(0xffffffffffffffff, 0x0, 0x40, 0x0, 0x0)
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)

program crashed: WARNING in blk_mq_free_tag_set
single: successfully extracted reproducer
found reproducer with 7 syscalls
minimizing guilty program
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-setsockopt$IPT_SO_SET_REPLACE-getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$netlink(0x10, 0x3, 0x0)
setsockopt$IPT_SO_SET_REPLACE(0xffffffffffffffff, 0x0, 0x40, 0x0, 0x0)
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program crashed: WARNING in blk_mq_free_tag_set
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-setsockopt$IPT_SO_SET_REPLACE-getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd
detailed listing:
executing program 0:
socket$netlink(0x10, 0x3, 0x0)
setsockopt$IPT_SO_SET_REPLACE(0xffffffffffffffff, 0x0, 0x40, 0x0, 0x0)
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-setsockopt$IPT_SO_SET_REPLACE-getsockname$packet-syz_init_net_socket$nl_generic-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$netlink(0x10, 0x3, 0x0)
setsockopt$IPT_SO_SET_REPLACE(0xffffffffffffffff, 0x0, 0x40, 0x0, 0x0)
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-setsockopt$IPT_SO_SET_REPLACE-getsockname$packet-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$netlink(0x10, 0x3, 0x0)
setsockopt$IPT_SO_SET_REPLACE(0xffffffffffffffff, 0x0, 0x40, 0x0, 0x0)
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(0xffffffffffffffff, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r0, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-setsockopt$IPT_SO_SET_REPLACE-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$netlink(0x10, 0x3, 0x0)
setsockopt$IPT_SO_SET_REPLACE(0xffffffffffffffff, 0x0, 0x40, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$netlink-getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
socket$netlink(0x10, 0x3, 0x0)
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program crashed: WARNING in blk_mq_free_tag_set
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program crashed: WARNING in blk_mq_free_tag_set
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(0x0, 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, 0x0, 0x0)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, 0x0}, 0x0)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={0x0, 0x48}}, 0x0)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[], 0x48}}, 0x0)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB], 0x48}}, 0x0)

program did not crash
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB, @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: WARNING in blk_mq_free_tag_set
simplifying C reproducer
testing compiled C program (duration=3m12.812594432s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program did not crash
testing compiled C program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program did not crash
testing compiled C program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: WARNING in blk_mq_free_tag_set
testing compiled C program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: WARNING in blk_mq_free_tag_set
testing compiled C program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: WARNING in blk_mq_free_tag_set
testing compiled C program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: WARNING in blk_mq_free_tag_set
testing compiled C program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
program crashed: WARNING in blk_mq_free_tag_set
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program did not crash
validation run: crashed=false
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program crashed: WARNING in blk_mq_free_tag_set
validation run: crashed=true
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program crashed: WARNING in blk_mq_free_tag_set
validation run: crashed=true
testing program (duration=3m12.812594432s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): getsockname$packet-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_CONNECT
detailed listing:
executing program 0:
getsockname$packet(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nbd(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000001ac0)={0x0, 0x0, &(0x7f0000001a80)={&(0x7f0000000740)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="01000000000000000000010000000c00060001000000000000000c00020000000000000000001c0007"], 0x48}}, 0x0)

program crashed: WARNING in blk_mq_free_tag_set
validation run: crashed=true
reproducing took 1h6m17.029001673s
repro crashed as (corrupted=false):
------------[ cut here ]------------
timer_delete_sync(&sdp->delay_work) && rcu_segcblist_n_cbs(&sdp->srcu_cblist)
WARNING: kernel/rcu/srcutree.c:706 at cleanup_srcu_struct+0x6e4/0xb30 kernel/rcu/srcutree.c:706, CPU#0: kworker/u33:4/74
Modules linked in:
CPU: 0 UID: 0 PID: 74 Comm: kworker/u33:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: nbd-del nbd_dev_remove_work
RIP: 0010:cleanup_srcu_struct+0x6e4/0xb30 kernel/rcu/srcutree.c:706
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f4 03 00 00 48 8b 83 e8 00 00 00 48 8d 93 80 01 00 00 48 85 c0 0f 84 a7 fc ff ff 90 <0f> 0b 90 48 8d 8b 00 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89
RSP: 0018:ffffc90000fc7b60 EFLAGS: 00010202
RAX: 0000000000000004 RBX: ffffe8fefc448f80 RCX: 0000000000000000
RDX: ffffe8fefc449100 RSI: ffffffff81f703bf RDI: ffff88801d368000
RBP: ffff88802b5bf000 R08: 0000000000000005 R09: 00000000ffffffff
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88802b5ba910
R13: 0000000000000000 R14: ffffffff8e65b0b0 R15: ffff88802b5ba950
FS:  0000000000000000(0000) GS:ffff8880d5b4f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9301deb840 CR3: 000000003f80d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 blk_mq_free_tag_set+0x354/0x550 block/blk-mq.c:4976
 nbd_dev_remove+0x43/0xe0 drivers/block/nbd.c:270
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
 process_scheduled_works kernel/workqueue.c:3479 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
timer_delete_sync(&sdp->delay_work) && rcu_segcblist_n_cbs(&sdp->srcu_cblist)
WARNING: kernel/rcu/srcutree.c:706 at cleanup_srcu_struct+0x6e4/0xb30 kernel/rcu/srcutree.c:706, CPU#0: kworker/u33:4/74
Modules linked in:
CPU: 0 UID: 0 PID: 74 Comm: kworker/u33:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: nbd-del nbd_dev_remove_work
RIP: 0010:cleanup_srcu_struct+0x6e4/0xb30 kernel/rcu/srcutree.c:706
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f4 03 00 00 48 8b 83 e8 00 00 00 48 8d 93 80 01 00 00 48 85 c0 0f 84 a7 fc ff ff 90 <0f> 0b 90 48 8d 8b 00 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89
RSP: 0018:ffffc90000fc7b60 EFLAGS: 00010202
RAX: 0000000000000004 RBX: ffffe8fefc448f80 RCX: 0000000000000000
RDX: ffffe8fefc449100 RSI: ffffffff81f703bf RDI: ffff88801d368000
RBP: ffff88802b5bf000 R08: 0000000000000005 R09: 00000000ffffffff
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88802b5ba910
R13: 0000000000000000 R14: ffffffff8e65b0b0 R15: ffff88802b5ba950
FS:  0000000000000000(0000) GS:ffff8880d5b4f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9301deb840 CR3: 000000003f80d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 blk_mq_free_tag_set+0x354/0x550 block/blk-mq.c:4976
 nbd_dev_remove+0x43/0xe0 drivers/block/nbd.c:270
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
 process_scheduled_works kernel/workqueue.c:3479 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>