Extracting prog: 8m57.245784622s
Minimizing prog: 1h19m29.302802494s
Simplifying prog options: 12m13.571682967s
Extracting C: 3m7.562950186s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program crashed: INFO: task hung in __iterate_supers
program crashed: WARNING in get_data
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})

program did not crash
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, <r0=>0xffffffffffffffff}, 0x0)
r1 = dup(r0)
write$FUSE_INIT(r1, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-dup-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff}, 0x0)
write$FUSE_INIT(0xffffffffffffffff, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
r0 = dup(0xffffffffffffffff)
write$FUSE_INIT(r0, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {}, 0x2c, {'wfdno', 0x3d, r0}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, 0x0, 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(0x0, 0x0)
r0 = dup(0xffffffffffffffff)
write$FUSE_INIT(r0, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {}, 0x2c, {'wfdno', 0x3d, r0}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, 0x0, 0x0) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, 0x0, &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', 0x0, 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, <r0=>0xffffffffffffffff}, 0x0)
r1 = dup(r0)
write$FUSE_INIT(r1, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, 0x0)
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C 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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
program crashed: INFO: task hung in __iterate_supers
a never seen crash title: INFO: task hung in __iterate_supers, ignore
simplifying guilty program options
testing program (duration=6m0s, {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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program crashed: INFO: task hung in __iterate_supers
validation run: crashed=true
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program did not crash
validation run: crashed=false
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program crashed: INFO: task hung in __iterate_supers
validation run: crashed=true
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}}): mknodat-pipe2$9p-dup-write$FUSE_INIT-mount$9p_fd-quotactl$Q_SYNC
detailed listing:
executing program 0:
mknodat(0xffffffffffffff9c, &(0x7f0000000040)='./file0\x00', 0x0, 0x0)
pipe2$9p(&(0x7f0000000240)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff}, 0x0)
r2 = dup(r1)
write$FUSE_INIT(r2, &(0x7f0000001740)={0x91, 0x0, 0x0, {0x7, 0x21, 0x0, 0x0, 0x7d, 0x1005, 0x0, 0x3}}, 0x50) (async)
mount$9p_fd(0x0, &(0x7f0000000300)='./file0\x00', &(0x7f0000004380), 0x1814800, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r2}, 0x2c, {[], [], 0x6b}})
quotactl$Q_SYNC(0xffffffff80000101, 0x0, 0x0, 0x0)

program crashed: WARNING in get_data
validation run: crashed=true
reproducing took 2h3m51.070742427s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278, CPU#1: kworker/u8:0/12
Modules linked in:
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: udp_tunnel_nic udp_tunnel_nic_device_sync_work
RIP: 0010:get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278
Code: 83 c4 f8 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 84 c0 0f 85 ee 01 00 00 44 89 65 00 49 83 c5 08 eb 13 e8 b7 d6 1e 00 90 <0f> 0b 90 eb 05 e8 ac d6 1e 00 45 31 ed 4c 89 e8 48 83 c4 28 5b 41
RSP: 0018:ffffc90000116d40 EFLAGS: 00010293
RAX: ffffffff81a1ff09 RBX: 00003fffffffffff RCX: ffff88801dac5ac0
RDX: 0000000000000000 RSI: 00003fffffffffff RDI: 0000000000000000
RBP: 0000000000000012 R08: 0000000000000e73 R09: 000000683ebc29d5
R10: 000000683ebc29d5 R11: 0000000cc2000049 R12: 0000000000000012
R13: 0000000000000000 R14: ffffc90000116e88 R15: 1ffffffff1c4ab06
FS:  0000000000000000(0000) GS:ffff888125b9c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b453254e8 CR3: 0000000047c26000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 copy_data kernel/printk/printk_ringbuffer.c:1857 [inline]
 prb_read kernel/printk/printk_ringbuffer.c:1966 [inline]
 _prb_read_valid+0x672/0xa90 kernel/printk/printk_ringbuffer.c:2143
 prb_read_valid+0x3c/0x60 kernel/printk/printk_ringbuffer.c:2215
 printk_get_next_message+0x15c/0x7b0 kernel/printk/printk.c:2978
 console_emit_next_record kernel/printk/printk.c:3062 [inline]
 console_flush_one_record kernel/printk/printk.c:3194 [inline]
 console_flush_all+0x4cc/0xb10 kernel/printk/printk.c:3268
 __console_flush_and_unlock kernel/printk/printk.c:3298 [inline]
 console_unlock+0xbb/0x190 kernel/printk/printk.c:3338
 vprintk_emit+0x4c5/0x590 kernel/printk/printk.c:2423
 dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4914
 dev_printk_emit+0xe0/0x130 drivers/base/core.c:4925
 __netdev_printk+0x3d7/0x4d0 net/core/dev.c:12873
 netdev_info+0x10a/0x160 net/core/dev.c:12928
 nsim_udp_tunnel_set_port+0x26e/0x3e0 drivers/net/netdevsim/udp_tunnels.c:31
 udp_tunnel_nic_device_sync_one net/ipv4/udp_tunnel_nic.c:-1 [inline]
 udp_tunnel_nic_device_sync_by_port net/ipv4/udp_tunnel_nic.c:249 [inline]
 __udp_tunnel_nic_device_sync+0xb0f/0x14d0 net/ipv4/udp_tunnel_nic.c:292
 udp_tunnel_nic_device_sync_work+0x97/0xa50 net/ipv4/udp_tunnel_nic.c:740
 process_one_work+0x94a/0x15d0 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3350 [inline]
 worker_thread+0x9b0/0xee0 kernel/workqueue.c:3431
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 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 ]------------
WARNING: kernel/printk/printk_ringbuffer.c:1278 at get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278, CPU#1: kworker/u8:0/12
Modules linked in:
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: udp_tunnel_nic udp_tunnel_nic_device_sync_work
RIP: 0010:get_data+0x48a/0x840 kernel/printk/printk_ringbuffer.c:1278
Code: 83 c4 f8 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 84 c0 0f 85 ee 01 00 00 44 89 65 00 49 83 c5 08 eb 13 e8 b7 d6 1e 00 90 <0f> 0b 90 eb 05 e8 ac d6 1e 00 45 31 ed 4c 89 e8 48 83 c4 28 5b 41
RSP: 0018:ffffc90000116d40 EFLAGS: 00010293
RAX: ffffffff81a1ff09 RBX: 00003fffffffffff RCX: ffff88801dac5ac0
RDX: 0000000000000000 RSI: 00003fffffffffff RDI: 0000000000000000
RBP: 0000000000000012 R08: 0000000000000e73 R09: 000000683ebc29d5
R10: 000000683ebc29d5 R11: 0000000cc2000049 R12: 0000000000000012
R13: 0000000000000000 R14: ffffc90000116e88 R15: 1ffffffff1c4ab06
FS:  0000000000000000(0000) GS:ffff888125b9c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b453254e8 CR3: 0000000047c26000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 copy_data kernel/printk/printk_ringbuffer.c:1857 [inline]
 prb_read kernel/printk/printk_ringbuffer.c:1966 [inline]
 _prb_read_valid+0x672/0xa90 kernel/printk/printk_ringbuffer.c:2143
 prb_read_valid+0x3c/0x60 kernel/printk/printk_ringbuffer.c:2215
 printk_get_next_message+0x15c/0x7b0 kernel/printk/printk.c:2978
 console_emit_next_record kernel/printk/printk.c:3062 [inline]
 console_flush_one_record kernel/printk/printk.c:3194 [inline]
 console_flush_all+0x4cc/0xb10 kernel/printk/printk.c:3268
 __console_flush_and_unlock kernel/printk/printk.c:3298 [inline]
 console_unlock+0xbb/0x190 kernel/printk/printk.c:3338
 vprintk_emit+0x4c5/0x590 kernel/printk/printk.c:2423
 dev_vprintk_emit+0x337/0x3f0 drivers/base/core.c:4914
 dev_printk_emit+0xe0/0x130 drivers/base/core.c:4925
 __netdev_printk+0x3d7/0x4d0 net/core/dev.c:12873
 netdev_info+0x10a/0x160 net/core/dev.c:12928
 nsim_udp_tunnel_set_port+0x26e/0x3e0 drivers/net/netdevsim/udp_tunnels.c:31
 udp_tunnel_nic_device_sync_one net/ipv4/udp_tunnel_nic.c:-1 [inline]
 udp_tunnel_nic_device_sync_by_port net/ipv4/udp_tunnel_nic.c:249 [inline]
 __udp_tunnel_nic_device_sync+0xb0f/0x14d0 net/ipv4/udp_tunnel_nic.c:292
 udp_tunnel_nic_device_sync_work+0x97/0xa50 net/ipv4/udp_tunnel_nic.c:740
 process_one_work+0x94a/0x15d0 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3350 [inline]
 worker_thread+0x9b0/0xee0 kernel/workqueue.c:3431
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>