Extracting prog: 2m57.649056696s
Minimizing prog: 18m7.391959207s
Simplifying prog options: 0s
Extracting C: 1m9.183493006s
Simplifying C: 9m23.457187611s


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}}): syz_usb_connect-syz_usb_control_io-syz_usb_control_io-syz_usb_control_io-syz_usb_control_io-syz_usb_control_io-syz_usb_control_io-syz_usb_control_io-syz_usb_control_io-syz_usb_control_io-syz_usb_control_io-nanosleep-socket$nl_generic-syz_genetlink_get_family_id$ethtool-sendmsg$ETHTOOL_MSG_WOL_GET-sendmsg$ETHTOOL_MSG_WOL_GET-sendmsg$ETHTOOL_MSG_WOL_GET-sendmsg$ETHTOOL_MSG_WOL_GET
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffff0040950b90170001000000010902270001010080fa0904000003ffff0000070581020002000705020200020007058303400008"], 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
syz_usb_control_io(r0, 0x0, 0x0)
nanosleep(&(0x7f0000000300)={0x0, 0x5f5e100}, 0x0)
r1 = socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$ethtool(&(0x7f0000000200), 0xffffffffffffffff)
sendmsg$ETHTOOL_MSG_WOL_GET(r1, 0x0, 0x0)
sendmsg$ETHTOOL_MSG_WOL_GET(r1, 0x0, 0x0)
sendmsg$ETHTOOL_MSG_WOL_GET(r1, &(0x7f0000000280)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000000200)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000090100000c0001800800010002000000"], 0x20}}, 0x0)
sendmsg$ETHTOOL_MSG_WOL_GET(r1, &(0x7f0000000380)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000300)=ANY=[@ANYBLOB=' \x00\x00\x00', @ANYRES16=r2, @ANYBLOB="01000000000000000000090100000c0001800800010003000000"], 0x20}}, 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write-nanosleep
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)
nanosleep(&(0x7f0000000400)={0x0, 0x5f5e100}, 0x0)

program crashed: WARNING in __netif_receive_skb_core
single: successfully extracted reproducer
found reproducer with 8 syscalls
minimizing guilty program
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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

program crashed: WARNING in __netif_receive_skb_core
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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
syz_init_net_socket$llc(0x1a, 0x2, 0x0)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
ioctl(0xffffffffffffffff, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
syz_open_pts(r0, 0x2)
r1 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r1, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
ioctl$TIOCSETD(0xffffffffffffffff, 0x5423, &(0x7f0000000100)=0x11)
r1 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r1, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
ioctl$TIOCSPTLCK(0xffffffffffffffff, 0x40045431, &(0x7f0000000080))
r0 = syz_open_pts(0xffffffffffffffff, 0x2)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000100)=0x11)
r1 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r1, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(0xffffffffffffffff, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, 0x0, 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, 0x0)
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, 0x0)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, 0x0)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200))
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300), 0x0)

program did not crash
extracting C reproducer
testing compiled C 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
program crashed: WARNING in __netif_receive_skb_core
simplifying C reproducer
testing compiled C program (duration=30s, {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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
program crashed: WARNING in __netif_receive_skb_core
testing compiled C program (duration=30s, {Threaded:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
program crashed: WARNING in __netif_receive_skb_core
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
program crashed: WARNING in __netif_receive_skb_core
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
program crashed: WARNING in __netif_receive_skb_core
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
program did not crash
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
program crashed: WARNING in __netif_receive_skb_core
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
program did not crash
testing program (duration=30s, {Threaded:false Repeat:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

program crashed: WARNING in __netif_receive_skb_core
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

program did not crash
validation run: crashed=false
testing program (duration=30s, {Threaded:false Repeat:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

program crashed: WARNING in __netif_receive_skb_core
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false 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}}): openat$ptmx-ioctl$TIOCSPTLCK-syz_open_pts-ioctl$TIOCSETD-syz_init_net_socket$llc-ioctl-write
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000040), 0x2, 0x0)
ioctl$TIOCSPTLCK(r0, 0x40045431, &(0x7f0000000080))
r1 = syz_open_pts(r0, 0x2)
ioctl$TIOCSETD(r1, 0x5423, &(0x7f0000000100)=0x11)
r2 = syz_init_net_socket$llc(0x1a, 0x2, 0x0)
ioctl(r2, 0x8914, &(0x7f0000000200)="63616e300000000000000000000000000100"/40)
write(r0, &(0x7f0000000300)='e1a\r', 0x4)

program crashed: WARNING in __netif_receive_skb_core
validation run: crashed=true
reproducing took 37m57.510161354s
repro crashed as (corrupted=false):
------------[ cut here ]------------
1
WARNING: ./include/linux/skbuff.h:3003 at skb_reset_mac_len include/linux/skbuff.h:3003 [inline], CPU#0: kworker/u8:3/50
WARNING: ./include/linux/skbuff.h:3003 at __netif_receive_skb_core.constprop.0+0x1706/0x3530 net/core/dev.c:6061, CPU#0: kworker/u8:3/50
Modules linked in:
CPU: 0 UID: 0 PID: 50 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:skb_reset_mac_len include/linux/skbuff.h:3003 [inline]
RIP: 0010:__netif_receive_skb_core.constprop.0+0x1706/0x3530 net/core/dev.c:6061
Code: de 4c 8b bc 24 e8 00 00 00 e8 86 f7 6b f8 85 db 0f 88 11 f2 ff ff 31 db 4d 8d af 81 00 00 00 e9 01 ed ff ff e8 fb fc 6b f8 90 <0f> 0b 90 31 db e9 43 eb ff ff e8 eb fc 6b f8 e8 66 af 4f f8 31 ff
RSP: 0018:ffffc90000007990 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000040 RCX: 0000000000000101
RDX: ffff8880246aa580 RSI: ffffffff89a02015 RDI: ffff8880246aa580
RBP: 000000000000ffff R08: 0000000000000003 R09: 000000000000ffff
R10: 000000000000ffff R11: 0000000000000001 R12: ffff888077625780
R13: ffffc90000007c10 R14: ffff888077625780 R15: ffff888077625780
FS:  0000000000000000(0000) GS:ffff888123b59000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f947403ceb8 CR3: 000000000eb96000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6262
 __netif_receive_skb+0x1f/0x120 net/core/dev.c:6377
 process_backlog+0x487/0x1600 net/core/dev.c:6728
 __napi_poll.constprop.0+0xaf/0x450 net/core/dev.c:7787
 napi_poll net/core/dev.c:7850 [inline]
 net_rx_action+0xa40/0xf20 net/core/dev.c:8007
 handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
 do_softirq kernel/softirq.c:546 [inline]
 do_softirq+0xaf/0xf0 kernel/softirq.c:533
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xff/0x120 kernel/softirq.c:473
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 netif_rx net/core/dev.c:5837 [inline]
 netif_rx+0x93/0xb0 net/core/dev.c:5826
 slcan_bump_err drivers/net/can/slcan/slcan-core.c:448 [inline]
 slcan_bump drivers/net/can/slcan/slcan-core.c:463 [inline]
 slcan_unesc drivers/net/can/slcan/slcan-core.c:476 [inline]
 slcan_receive_buf+0x1a66/0x1f30 drivers/net/can/slcan/slcan-core.c:807
 tty_ldisc_receive_buf+0x15a/0x1a0 drivers/tty/tty_buffer.c:398
 tty_port_default_receive_buf+0x70/0xb0 drivers/tty/tty_port.c:37
 receive_buf drivers/tty/tty_buffer.c:452 [inline]
 flush_to_ldisc+0x26b/0x730 drivers/tty/tty_buffer.c:502
 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 ]------------
1
WARNING: ./include/linux/skbuff.h:3003 at skb_reset_mac_len include/linux/skbuff.h:3003 [inline], CPU#0: kworker/u8:3/50
WARNING: ./include/linux/skbuff.h:3003 at __netif_receive_skb_core.constprop.0+0x1706/0x3530 net/core/dev.c:6061, CPU#0: kworker/u8:3/50
Modules linked in:
CPU: 0 UID: 0 PID: 50 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:skb_reset_mac_len include/linux/skbuff.h:3003 [inline]
RIP: 0010:__netif_receive_skb_core.constprop.0+0x1706/0x3530 net/core/dev.c:6061
Code: de 4c 8b bc 24 e8 00 00 00 e8 86 f7 6b f8 85 db 0f 88 11 f2 ff ff 31 db 4d 8d af 81 00 00 00 e9 01 ed ff ff e8 fb fc 6b f8 90 <0f> 0b 90 31 db e9 43 eb ff ff e8 eb fc 6b f8 e8 66 af 4f f8 31 ff
RSP: 0018:ffffc90000007990 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000040 RCX: 0000000000000101
RDX: ffff8880246aa580 RSI: ffffffff89a02015 RDI: ffff8880246aa580
RBP: 000000000000ffff R08: 0000000000000003 R09: 000000000000ffff
R10: 000000000000ffff R11: 0000000000000001 R12: ffff888077625780
R13: ffffc90000007c10 R14: ffff888077625780 R15: ffff888077625780
FS:  0000000000000000(0000) GS:ffff888123b59000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f947403ceb8 CR3: 000000000eb96000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6262
 __netif_receive_skb+0x1f/0x120 net/core/dev.c:6377
 process_backlog+0x487/0x1600 net/core/dev.c:6728
 __napi_poll.constprop.0+0xaf/0x450 net/core/dev.c:7787
 napi_poll net/core/dev.c:7850 [inline]
 net_rx_action+0xa40/0xf20 net/core/dev.c:8007
 handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
 do_softirq kernel/softirq.c:546 [inline]
 do_softirq+0xaf/0xf0 kernel/softirq.c:533
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xff/0x120 kernel/softirq.c:473
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 netif_rx net/core/dev.c:5837 [inline]
 netif_rx+0x93/0xb0 net/core/dev.c:5826
 slcan_bump_err drivers/net/can/slcan/slcan-core.c:448 [inline]
 slcan_bump drivers/net/can/slcan/slcan-core.c:463 [inline]
 slcan_unesc drivers/net/can/slcan/slcan-core.c:476 [inline]
 slcan_receive_buf+0x1a66/0x1f30 drivers/net/can/slcan/slcan-core.c:807
 tty_ldisc_receive_buf+0x15a/0x1a0 drivers/tty/tty_buffer.c:398
 tty_port_default_receive_buf+0x70/0xb0 drivers/tty/tty_port.c:37
 receive_buf drivers/tty/tty_buffer.c:452 [inline]
 flush_to_ldisc+0x26b/0x730 drivers/tty/tty_buffer.c:502
 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>