Extracting prog: 4m4.252371115s
Minimizing prog: 23m3.995857662s
Simplifying prog options: 0s
Extracting C: 35.635255893s
Simplifying C: 10m21.562681898s


extracting reproducer from 30 programs
testing a last program of every proc
single: executing 5 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mmap-socket$unix-setns-openat$tun-ioctl$TUNSETLINK-socket$inet-ioctl$sock_inet_SIOCSIFFLAGS-syz_init_net_socket$x25-bind$x25-sendmsg$NFT_BATCH-socket$nl_generic-syz_genetlink_get_family_id$nl80211-ioctl$sock_SIOCGIFINDEX_80211-sendmsg$NL80211_CMD_FRAME-syz_usb_control_io
detailed listing:
executing program 0:
mmap(&(0x7f0000000000/0x200000)=nil, 0x200000, 0x300000b, 0x204031, 0xffffffffffffffff, 0xec776000)
socket$unix(0x1, 0x2, 0x0)
setns(0xc9, 0x0)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TUNSETLINK(r0, 0x400454cd, 0x10f)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, 0x0)
r2 = syz_init_net_socket$x25(0x9, 0x5, 0x0)
bind$x25(r2, &(0x7f0000000100), 0x12)
sendmsg$NFT_BATCH(0xffffffffffffffff, 0x0, 0x0)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000140), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r3, 0x8933, &(0x7f0000000340)={'wlan1\x00', <r5=>0x0})
sendmsg$NL80211_CMD_FRAME(r3, &(0x7f0000001380)={0x0, 0x0, &(0x7f0000001340)={&(0x7f0000000000)=ANY=[@ANYBLOB="f4060000", @ANYRES16=r4, @ANYBLOB="01000000000000e14f003b00000008000300", @ANYRES32=r5, @ANYBLOB="d506330080000000ffffffffffff080211000001"], 0x6f4}}, 0x0)
syz_usb_control_io(0xffffffffffffffff, &(0x7f00000003c0)={0x2c, &(0x7f00000000c0)={0x0, 0x3, 0x2e, {0x2e, 0xa, "83efb949f0ff7f562348d180df827ff0478fa22a61a54607b71ea9e43d359c479c37f525cde32758cc0738b4"}}, 0x0, 0x0, 0x0, 0x0}, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): write$uinput_user_dev-openat$kvm-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$BINDER_WRITE_READ-ioctl$KVM_CREATE_VCPU-sendmsg$NLBL_UNLABEL_C_STATICADD-ioctl$KVM_SET_USER_MEMORY_REGION-ioctl$KVM_SET_REGS-openat$kvm-ioctl$KVM_RUN-ioctl$KVM_CREATE_VM-dup-ioctl$KVM_SET_USER_MEMORY_REGION-ioctl$KVM_CREATE_VCPU-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN
detailed listing:
executing program 0:
write$uinput_user_dev(0xffffffffffffffff, &(0x7f0000000cc0)={'syz1\x00', {0xfff9, 0x2, 0x248, 0x9b99}, 0x25, [0x9, 0x7, 0x2, 0x6, 0x8, 0x155f, 0x10000006, 0x4, 0x2dcd, 0x1, 0xb4, 0xd, 0xa2b9, 0x6, 0x7, 0xe1, 0x6, 0xfc000004, 0x403, 0xbbf, 0x3, 0xfffffffd, 0x101c0, 0xd, 0x0, 0x0, 0x6, 0x4, 0x100002, 0xc3, 0x5d6, 0x8001, 0x8a, 0x79, 0x2, 0x10080, 0x2, 0x91, 0x129, 0x4, 0x16, 0x8, 0x5, 0x401, 0x1, 0x405, 0xa7, 0x81, 0x9, 0xf9a2, 0xa9, 0xff, 0x0, 0x2, 0x2, 0x2, 0x7, 0x489, 0x7ff, 0x4, 0x4007f, 0xffffffff, 0x6, 0x4], [0x9, 0x3, 0x6, 0x9, 0x4, 0x8000c66, 0xa8a9, 0x2000006f, 0x8e, 0xd50, 0x7, 0xad, 0x2, 0x809, 0x40, 0xa7, 0x1000, 0x0, 0x200b398, 0x8001, 0x1, 0x4, 0x1c, 0x7, 0x1, 0xfffffffe, 0x3, 0x8, 0xffffff7f, 0x6, 0x6, 0x4c2336d3, 0x4, 0x0, 0xfffbfff8, 0x4, 0x46, 0xf1, 0x7, 0xab00060, 0x2, 0x9, 0xffffffff, 0x5, 0x3ff, 0x1ff, 0x1, 0x7fff, 0x67b2, 0x1cc, 0x9, 0x80000004, 0x6, 0x438, 0x2, 0x9, 0x2, 0x7fffffff, 0x4, 0xfffffff9, 0x18e, 0x1000, 0x2, 0x5], [0x2, 0xfffffffe, 0x9, 0xc, 0x2, 0x2e6bf783, 0x80000001, 0x5, 0x5, 0x491, 0x9, 0x200026, 0x7f, 0x400, 0x102, 0x1, 0x41, 0x6, 0xee4b, 0x2000004, 0x1, 0xc, 0x5, 0x9, 0x5, 0x3, 0x9, 0x3, 0xc7, 0xfff, 0x10000a, 0x2, 0x400, 0x8, 0x5, 0xd3, 0x8, 0x97f7, 0x3, 0x200000d, 0x3, 0x10010, 0x7, 0xdd81, 0x4, 0x7f, 0x9d27, 0x9, 0x1, 0x100, 0x2, 0x6, 0x7ffe, 0x28, 0x5, 0xd500, 0x8, 0x77, 0x9, 0x6, 0x10000, 0xfffffffd, 0x5, 0xfffffffe], [0xa772, 0x6, 0x5, 0x1af8, 0xbfc, 0x9, 0x5, 0x7f, 0x55, 0x7ff, 0xff, 0x1005, 0x10000001, 0x7, 0x21, 0x9, 0x81, 0x7, 0x9d87, 0x8, 0x8, 0x4, 0x140f1, 0x5396, 0x3, 0x6, 0x80008001, 0x7777, 0x1, 0x2, 0x100, 0xd8ce, 0x7fffffff, 0x100009, 0xc, 0x32d, 0x3, 0x1ff, 0x2000803, 0xffffffff, 0x10000, 0x0, 0x8004, 0x7fff, 0x3, 0x6, 0xf, 0xe, 0x8, 0x274, 0x6, 0xfffffff9, 0x4, 0x9, 0x9, 0x4, 0x463f, 0x4, 0xdab, 0x5, 0x8, 0x13fff, 0x1, 0x9]}, 0x45c)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)
r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0)
ioctl$BINDER_WRITE_READ(0xffffffffffffffff, 0xc0306201, &(0x7f0000000240)={0x4, 0x0, &(0x7f0000000380)=[@register_looper], 0x0, 0x0, 0x0})
r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0)
sendmsg$NLBL_UNLABEL_C_STATICADD(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f00000001c0)={&(0x7f00000000c0)={0x44, 0x0, 0x1, 0x70bd29, 0x25dfdbfe, {}, [@NLBL_UNLABEL_A_IPV4MASK={0x8, 0x5, @broadcast}, @NLBL_UNLABEL_A_IFACE={0x14, 0x6, 'pim6reg1\x00'}, @NLBL_UNLABEL_A_IPV6ADDR={0x14, 0x2, @private2}]}, 0x44}}, 0x8004)
ioctl$KVM_SET_USER_MEMORY_REGION(r2, 0x4020ae46, &(0x7f0000000180)={0x0, 0x0, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil})
ioctl$KVM_SET_REGS(r3, 0x4090ae82, &(0x7f0000000000)={[0x35, 0xfff, 0xfffffffffffffffe, 0x40000000000180, 0x2, 0x7, 0xf2, 0xd, 0x7fffffffffffe, 0x7, 0x5, 0xb, 0x7, 0xfffffffffffffff8, 0x9, 0x8], 0x25000, 0x304})
openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)
r4 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r5 = dup(r4)
ioctl$KVM_SET_USER_MEMORY_REGION(r4, 0x4020ae46, &(0x7f0000000840)={0x1fe, 0x2, 0x3000, 0x2000, &(0x7f0000003000/0x2000)=nil})
r6 = ioctl$KVM_CREATE_VCPU(r5, 0xae41, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r6, &(0x7f0000000000/0x18000)=nil, &(0x7f0000000040)=[@text32={0x20, &(0x7f00000000c0)="c20000361e0f01c3660fd2eff30f10f1b961020000b80e000000ba000000000f30b98d0200000f320b99f3530000660f6af7c4e2f91d20", 0x37}], 0x1, 0x11, 0x0, 0x0)
ioctl$KVM_RUN(r6, 0xae80, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-syz_usb_connect$hid-openat-write-ioctl
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000640)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
syz_usb_connect$hid(0x2, 0x36, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x0, 0x0, 0x0, 0x40, 0x757, 0xa00, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0x0, 0x5, "", [{{0x9, 0x4, 0x0, 0x0, 0x9, 0x3, 0x0, 0x0, 0x0, {0x9, 0x21, 0x0, 0x20, 0x1, {0x22, 0x29}}}}]}}]}}, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000280)='./dev/mapper/control\x00', 0x240, 0x310)
write(0xffffffffffffffff, &(0x7f0000000000)="240000001a005f0214f9f4070009", 0xe)
ioctl(r0, 0xc138fd02, &(0x7f0000000000)="0400000000000000")

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-sched_setscheduler-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000180)=0x4)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
single: successfully extracted reproducer
found reproducer with 9 syscalls
minimizing guilty program
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-sched_setscheduler-bind$inet-listen-mkdir-mount-accept
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000180)=0x4)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
accept(r0, 0x0, 0x0)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-sched_setscheduler-bind$inet-listen-mkdir-mount-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000180)=0x4)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
write(0xffffffffffffffff, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-sched_setscheduler-bind$inet-listen-mkdir-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000180)=0x4)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-sched_setscheduler-bind$inet-listen-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000180)=0x4)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-sched_setscheduler-bind$inet-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000180)=0x4)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-sched_setscheduler-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000180)=0x4)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(0xffffffffffffffff, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(0xffffffffffffffff, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r0 = accept(0xffffffffffffffff, 0x0, 0x0)
write(r0, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, 0x0, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, 0x0, 0x0)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(0x0, 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, 0x0, &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', 0x0, 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, 0x0)
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, 0x0, 0x0)

program did not crash
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500), 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
simplifying C reproducer
testing compiled C program (duration=47.670399601s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
program did not crash
testing compiled C program (duration=47.670399601s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false 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$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
program did not crash
testing compiled C program (duration=47.670399601s, {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}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
testing compiled C program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
testing compiled C program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
testing compiled C program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
program did not crash
testing compiled C program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
testing compiled C program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
validation run: crashed=true
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
validation run: crashed=true
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program did not crash
validation run: crashed=false
testing program (duration=47.670399601s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-prlimit64-bind$inet-listen-mkdir-mount-accept-write
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000280)={0x85, 0xfffffffffffffffc}, 0x0)
bind$inet(r0, &(0x7f0000000000)={0x2, 0x1bd, @empty}, 0x10)
listen(r0, 0xa)
mkdir(&(0x7f0000000100)='./file0\x00', 0x0)
mount(0x0, &(0x7f0000000100)='./file0\x00', &(0x7f0000000200)='cifs\x00', 0x0, &(0x7f0000000300)='source=//127.0.0.1/share,user=root,pass=root,port=445,vers=3.0\x00')
r1 = accept(r0, 0x0, 0x0)
write(r1, &(0x7f0000000500)="00000080fe534d4240000000000000000000010001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000041000100000300000000000000000000000000000000000000000000000010000000100000001000000000000000000000000000000000008000000000000000", 0x88)

program crashed: KASAN: use-after-free Read in reconn_set_ipaddr_from_hostname
validation run: crashed=true
reproducing took 43m43.396067046s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in string_nocheck lib/vsprintf.c:642 [inline]
BUG: KASAN: use-after-free in string+0x204/0x290 lib/vsprintf.c:724
Read of size 1 at addr ffff888071136260 by task cifsd/4400

CPU: 0 PID: 4400 Comm: cifsd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 string_nocheck lib/vsprintf.c:642 [inline]
 string+0x204/0x290 lib/vsprintf.c:724
 vsnprintf+0x10db/0x1c20 lib/vsprintf.c:2811
 vscnprintf lib/vsprintf.c:2914 [inline]
 scnprintf+0xe5/0x180 lib/vsprintf.c:2968
 reconn_set_ipaddr_from_hostname+0x112/0x580 fs/cifs/connect.c:107
 __cifs_reconnect fs/cifs/connect.c:288 [inline]
 cifs_reconnect+0x470/0x1350 fs/cifs/connect.c:447
 cifs_demultiplex_thread+0x1eca/0x35b0 fs/cifs/connect.c:-1
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Allocated by task 4399:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xaf/0xe0 mm/kasan/common.c:522
 kstrdup+0x32/0x70 mm/util.c:60
 cifs_get_tcp_session+0xde/0x18f0 fs/cifs/connect.c:1431
 mount_get_conns+0xc3/0xe00 fs/cifs/connect.c:2988
 is_dfs_mount fs/cifs/connect.c:3354 [inline]
 cifs_mount+0x162/0x1380 fs/cifs/connect.c:3549
 cifs_smb3_do_mount+0x366/0x760 fs/cifs/cifsfs.c:895
 smb3_get_tree_common fs/cifs/fs_context.c:708 [inline]
 smb3_get_tree+0x59a/0xa80 fs/cifs/fs_context.c:726
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x247/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Freed by task 4399:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1710 [inline]
 slab_free_freelist_hook+0xec/0x170 mm/slub.c:1736
 slab_free mm/slub.c:3504 [inline]
 kfree+0xef/0x2a0 mm/slub.c:4564
 cifs_put_tcp_session+0x2e1/0x3d0 fs/cifs/connect.c:1404
 mount_put_conns+0xb0/0x270 fs/cifs/connect.c:2969
 cifs_mount+0xbf5/0x1380 fs/cifs/connect.c:3597
 cifs_smb3_do_mount+0x366/0x760 fs/cifs/cifsfs.c:895
 smb3_get_tree_common fs/cifs/fs_context.c:708 [inline]
 smb3_get_tree+0x59a/0xa80 fs/cifs/fs_context.c:726
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x247/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff888071136260
 which belongs to the cache kmalloc-16 of size 16
The buggy address is located 0 bytes inside of
 16-byte region [ffff888071136260, ffff888071136270)
The buggy address belongs to the page:
page:ffffea0001c44d80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x71136
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888016c413c0
raw: 0000000000000000 0000000080800080 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 4299, ts 89404424684, free_ts 89397043492
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 __alloc_pages_node include/linux/gfp.h:570 [inline]
 alloc_slab_page mm/slub.c:1782 [inline]
 allocate_slab mm/slub.c:1917 [inline]
 new_slab+0xb6/0x4b0 mm/slub.c:1980
 ___slab_alloc+0x807/0xdd0 mm/slub.c:3013
 __slab_alloc mm/slub.c:3100 [inline]
 slab_alloc_node mm/slub.c:3191 [inline]
 __kmalloc_node+0x142/0x3a0 mm/slub.c:4456
 kmalloc_node include/linux/slab.h:630 [inline]
 kvmalloc_node+0x84/0x130 mm/util.c:619
 xt_jumpstack_alloc net/netfilter/x_tables.c:1377 [inline]
 xt_replace_table+0x160/0x750 net/netfilter/x_tables.c:1416
 __do_replace+0x16f/0xa00 net/ipv6/netfilter/ip6_tables.c:1081
 do_replace net/ipv6/netfilter/ip6_tables.c:1158 [inline]
 do_ip6t_set_ctl+0xaa4/0xd90 net/ipv6/netfilter/ip6_tables.c:1643
 nf_setsockopt+0x25f/0x280 net/netfilter/nf_sockopt.c:101
 ipv6_setsockopt+0x20ba/0x3cc0 net/ipv6/ipv6_sockglue.c:1014
 tcp_setsockopt+0x229/0x1e60 net/ipv4/tcp.c:3722
 __sys_setsockopt+0x2bf/0x3d0 net/socket.c:2213
 __do_sys_setsockopt net/socket.c:2224 [inline]
 __se_sys_setsockopt net/socket.c:2221 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2221
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x8f/0x2a0 mm/page_alloc.c:3396
 __vunmap+0x8e0/0xa80 mm/vmalloc.c:2628
 free_work+0x56/0x80 mm/vmalloc.c:95
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

Memory state around the buggy address:
 ffff888071136100: 00 00 fc fc fa fb fc fc 00 00 fc fc 00 00 fc fc
 ffff888071136180: 00 00 fc fc fa fb fc fc 00 06 fc fc 00 00 fc fc
>ffff888071136200: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
                                                       ^
 ffff888071136280: 00 00 fc fc 00 00 fc fc fc fc fc fc fc fc fc fc
 ffff888071136300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in string_nocheck lib/vsprintf.c:642 [inline]
BUG: KASAN: use-after-free in string+0x204/0x290 lib/vsprintf.c:724
Read of size 1 at addr ffff888071136260 by task cifsd/4400

CPU: 0 PID: 4400 Comm: cifsd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 string_nocheck lib/vsprintf.c:642 [inline]
 string+0x204/0x290 lib/vsprintf.c:724
 vsnprintf+0x10db/0x1c20 lib/vsprintf.c:2811
 vscnprintf lib/vsprintf.c:2914 [inline]
 scnprintf+0xe5/0x180 lib/vsprintf.c:2968
 reconn_set_ipaddr_from_hostname+0x112/0x580 fs/cifs/connect.c:107
 __cifs_reconnect fs/cifs/connect.c:288 [inline]
 cifs_reconnect+0x470/0x1350 fs/cifs/connect.c:447
 cifs_demultiplex_thread+0x1eca/0x35b0 fs/cifs/connect.c:-1
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Allocated by task 4399:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xaf/0xe0 mm/kasan/common.c:522
 kstrdup+0x32/0x70 mm/util.c:60
 cifs_get_tcp_session+0xde/0x18f0 fs/cifs/connect.c:1431
 mount_get_conns+0xc3/0xe00 fs/cifs/connect.c:2988
 is_dfs_mount fs/cifs/connect.c:3354 [inline]
 cifs_mount+0x162/0x1380 fs/cifs/connect.c:3549
 cifs_smb3_do_mount+0x366/0x760 fs/cifs/cifsfs.c:895
 smb3_get_tree_common fs/cifs/fs_context.c:708 [inline]
 smb3_get_tree+0x59a/0xa80 fs/cifs/fs_context.c:726
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x247/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

Freed by task 4399:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1710 [inline]
 slab_free_freelist_hook+0xec/0x170 mm/slub.c:1736
 slab_free mm/slub.c:3504 [inline]
 kfree+0xef/0x2a0 mm/slub.c:4564
 cifs_put_tcp_session+0x2e1/0x3d0 fs/cifs/connect.c:1404
 mount_put_conns+0xb0/0x270 fs/cifs/connect.c:2969
 cifs_mount+0xbf5/0x1380 fs/cifs/connect.c:3597
 cifs_smb3_do_mount+0x366/0x760 fs/cifs/cifsfs.c:895
 smb3_get_tree_common fs/cifs/fs_context.c:708 [inline]
 smb3_get_tree+0x59a/0xa80 fs/cifs/fs_context.c:726
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x247/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff888071136260
 which belongs to the cache kmalloc-16 of size 16
The buggy address is located 0 bytes inside of
 16-byte region [ffff888071136260, ffff888071136270)
The buggy address belongs to the page:
page:ffffea0001c44d80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x71136
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888016c413c0
raw: 0000000000000000 0000000080800080 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 4299, ts 89404424684, free_ts 89397043492
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 __alloc_pages_node include/linux/gfp.h:570 [inline]
 alloc_slab_page mm/slub.c:1782 [inline]
 allocate_slab mm/slub.c:1917 [inline]
 new_slab+0xb6/0x4b0 mm/slub.c:1980
 ___slab_alloc+0x807/0xdd0 mm/slub.c:3013
 __slab_alloc mm/slub.c:3100 [inline]
 slab_alloc_node mm/slub.c:3191 [inline]
 __kmalloc_node+0x142/0x3a0 mm/slub.c:4456
 kmalloc_node include/linux/slab.h:630 [inline]
 kvmalloc_node+0x84/0x130 mm/util.c:619
 xt_jumpstack_alloc net/netfilter/x_tables.c:1377 [inline]
 xt_replace_table+0x160/0x750 net/netfilter/x_tables.c:1416
 __do_replace+0x16f/0xa00 net/ipv6/netfilter/ip6_tables.c:1081
 do_replace net/ipv6/netfilter/ip6_tables.c:1158 [inline]
 do_ip6t_set_ctl+0xaa4/0xd90 net/ipv6/netfilter/ip6_tables.c:1643
 nf_setsockopt+0x25f/0x280 net/netfilter/nf_sockopt.c:101
 ipv6_setsockopt+0x20ba/0x3cc0 net/ipv6/ipv6_sockglue.c:1014
 tcp_setsockopt+0x229/0x1e60 net/ipv4/tcp.c:3722
 __sys_setsockopt+0x2bf/0x3d0 net/socket.c:2213
 __do_sys_setsockopt net/socket.c:2224 [inline]
 __se_sys_setsockopt net/socket.c:2221 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2221
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x8f/0x2a0 mm/page_alloc.c:3396
 __vunmap+0x8e0/0xa80 mm/vmalloc.c:2628
 free_work+0x56/0x80 mm/vmalloc.c:95
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

Memory state around the buggy address:
 ffff888071136100: 00 00 fc fc fa fb fc fc 00 00 fc fc 00 00 fc fc
 ffff888071136180: 00 00 fc fc fa fb fc fc 00 06 fc fc 00 00 fc fc
>ffff888071136200: fa fb fc fc fa fb fc fc fa fb fc fc fa fb fc fc
                                                       ^
 ffff888071136280: 00 00 fc fc 00 00 fc fc fc fc fc fc fc fc fc fc
 ffff888071136300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================