Extracting prog: 26.259476753s
Minimizing prog: 20m10.303363255s
Simplifying prog options: 0s
Extracting C: 53.330880308s
Simplifying C: 5m40.896991254s
extracting reproducer from 30 programs
first checking the prog from the crash report
single: executing 1 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-mkdirat-mount-mkdirat-mkdirat-openat-write$uinput_user_dev-ppoll-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/functions/acm.usb0\x00', 0x1ff)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
write$uinput_user_dev(0xffffffffffffffff, &(0x7f0000000400)={'syz0\x00', {0x3, 0x2, 0x6, 0xfff7}, 0x3a, [0x8000, 0xc95a, 0xf, 0x8, 0x80, 0x2, 0x3, 0x80, 0x20000006, 0x4d, 0x6, 0x5f, 0x9, 0x5, 0xffff2d37, 0xff7fff01, 0x6, 0x3, 0x7, 0x5, 0x4, 0x0, 0x7, 0x3c5b, 0x1, 0x24, 0xd, 0x1, 0x0, 0xffffffff, 0xe661, 0x4, 0x7, 0x3, 0x8, 0x4c75, 0x10000, 0x242, 0x3, 0xe, 0x0, 0x80008071, 0x7, 0x17, 0x1, 0x7, 0x5, 0x5, 0x8e, 0x7, 0x6, 0x0, 0x5, 0x4, 0x30a429b, 0x3ff, 0x80, 0x0, 0x5, 0x6, 0x8, 0x4, 0x0, 0x40], [0x10000007, 0x100009, 0x8000012f, 0x8004, 0x5, 0xfffffff3, 0x129432e6, 0xc8, 0xf9, 0xe, 0x2bf, 0x6c7, 0x9, 0xfffffffc, 0x3, 0x0, 0x0, 0x5, 0x2f, 0xe, 0x312, 0x78, 0xea4, 0x7fff, 0x4, 0x7, 0x7fff, 0x6, 0x400, 0x401, 0x3, 0x1, 0xff, 0x5, 0x1000005, 0x5f31, 0xd, 0x4e0, 0x8, 0x4, 0xb, 0x4, 0x9, 0x5, 0x9, 0x6, 0x47, 0xff12, 0x1, 0xfe000000, 0xffff, 0x2, 0x4, 0x9, 0x3, 0x3, 0x9, 0x1, 0x3, 0x3, 0xbc45, 0x48c93690, 0x42, 0xe], [0x7, 0x40b, 0x4, 0x5, 0xfffffffe, 0x100, 0x4, 0x9, 0x5, 0x7fff, 0x0, 0x7, 0xb, 0x4, 0x5, 0x5, 0x0, 0x1ef, 0x5, 0x8, 0x86, 0x3, 0xa, 0x3e7, 0xb, 0x5, 0x2, 0x2, 0x1, 0x2000000b, 0x4, 0x6d01, 0x6, 0x38, 0x800003, 0x200, 0x80, 0xffffffff, 0x4, 0x2950bfaf, 0x1000, 0xa2, 0x7, 0xa9, 0x5, 0x6, 0xac8, 0xbf, 0x2, 0x3, 0x7ff, 0x12b, 0x4, 0x1, 0xa, 0x0, 0x5, 0x1c, 0x120000, 0x5, 0x2006, 0x80a2ed, 0x4, 0x25], [0x80000009, 0xbb33, 0x7, 0xb, 0x5, 0x938, 0x6, 0x6, 0x0, 0xb9, 0xce4, 0x1ff, 0x2, 0x57, 0x5, 0x3, 0x101, 0x4, 0x4, 0x3, 0xffff, 0xa620, 0x1, 0x5, 0x1, 0x3, 0x14c, 0x60a7, 0x4, 0x16, 0xffffffff, 0x80000000, 0x5, 0x4, 0xc8, 0x1, 0xfffff000, 0x10000, 0x3, 0x7e, 0x100, 0x9622, 0x7, 0xaf, 0x8, 0x6, 0x226, 0x5, 0x5, 0x0, 0x30b1d693, 0xa1f, 0xf40, 0x7, 0x1, 0x6c1b, 0x0, 0x4, 0xffffff80, 0xb1e, 0xd7, 0x200, 0xffff3441, 0xfff]}, 0x45c)
ppoll(&(0x7f00000000c0)=[{}, {}], 0x20000000000000dc, 0x0, 0x0, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in tty_open
single: successfully extracted reproducer
found reproducer with 14 syscalls
minimizing guilty program
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-mkdirat-mount-mkdirat-mkdirat-openat-write$uinput_user_dev-ppoll
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/functions/acm.usb0\x00', 0x1ff)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
write$uinput_user_dev(0xffffffffffffffff, &(0x7f0000000400)={'syz0\x00', {0x3, 0x2, 0x6, 0xfff7}, 0x3a, [0x8000, 0xc95a, 0xf, 0x8, 0x80, 0x2, 0x3, 0x80, 0x20000006, 0x4d, 0x6, 0x5f, 0x9, 0x5, 0xffff2d37, 0xff7fff01, 0x6, 0x3, 0x7, 0x5, 0x4, 0x0, 0x7, 0x3c5b, 0x1, 0x24, 0xd, 0x1, 0x0, 0xffffffff, 0xe661, 0x4, 0x7, 0x3, 0x8, 0x4c75, 0x10000, 0x242, 0x3, 0xe, 0x0, 0x80008071, 0x7, 0x17, 0x1, 0x7, 0x5, 0x5, 0x8e, 0x7, 0x6, 0x0, 0x5, 0x4, 0x30a429b, 0x3ff, 0x80, 0x0, 0x5, 0x6, 0x8, 0x4, 0x0, 0x40], [0x10000007, 0x100009, 0x8000012f, 0x8004, 0x5, 0xfffffff3, 0x129432e6, 0xc8, 0xf9, 0xe, 0x2bf, 0x6c7, 0x9, 0xfffffffc, 0x3, 0x0, 0x0, 0x5, 0x2f, 0xe, 0x312, 0x78, 0xea4, 0x7fff, 0x4, 0x7, 0x7fff, 0x6, 0x400, 0x401, 0x3, 0x1, 0xff, 0x5, 0x1000005, 0x5f31, 0xd, 0x4e0, 0x8, 0x4, 0xb, 0x4, 0x9, 0x5, 0x9, 0x6, 0x47, 0xff12, 0x1, 0xfe000000, 0xffff, 0x2, 0x4, 0x9, 0x3, 0x3, 0x9, 0x1, 0x3, 0x3, 0xbc45, 0x48c93690, 0x42, 0xe], [0x7, 0x40b, 0x4, 0x5, 0xfffffffe, 0x100, 0x4, 0x9, 0x5, 0x7fff, 0x0, 0x7, 0xb, 0x4, 0x5, 0x5, 0x0, 0x1ef, 0x5, 0x8, 0x86, 0x3, 0xa, 0x3e7, 0xb, 0x5, 0x2, 0x2, 0x1, 0x2000000b, 0x4, 0x6d01, 0x6, 0x38, 0x800003, 0x200, 0x80, 0xffffffff, 0x4, 0x2950bfaf, 0x1000, 0xa2, 0x7, 0xa9, 0x5, 0x6, 0xac8, 0xbf, 0x2, 0x3, 0x7ff, 0x12b, 0x4, 0x1, 0xa, 0x0, 0x5, 0x1c, 0x120000, 0x5, 0x2006, 0x80a2ed, 0x4, 0x25], [0x80000009, 0xbb33, 0x7, 0xb, 0x5, 0x938, 0x6, 0x6, 0x0, 0xb9, 0xce4, 0x1ff, 0x2, 0x57, 0x5, 0x3, 0x101, 0x4, 0x4, 0x3, 0xffff, 0xa620, 0x1, 0x5, 0x1, 0x3, 0x14c, 0x60a7, 0x4, 0x16, 0xffffffff, 0x80000000, 0x5, 0x4, 0xc8, 0x1, 0xfffff000, 0x10000, 0x3, 0x7e, 0x100, 0x9622, 0x7, 0xaf, 0x8, 0x6, 0x226, 0x5, 0x5, 0x0, 0x30b1d693, 0xa1f, 0xf40, 0x7, 0x1, 0x6c1b, 0x0, 0x4, 0xffffff80, 0xb1e, 0xd7, 0x200, 0xffff3441, 0xfff]}, 0x45c)
ppoll(&(0x7f00000000c0)=[{}, {}], 0x20000000000000dc, 0x0, 0x0, 0x0)
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-mkdirat-mount-mkdirat-mkdirat-openat-write$uinput_user_dev-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/functions/acm.usb0\x00', 0x1ff)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
write$uinput_user_dev(0xffffffffffffffff, &(0x7f0000000400)={'syz0\x00', {0x3, 0x2, 0x6, 0xfff7}, 0x3a, [0x8000, 0xc95a, 0xf, 0x8, 0x80, 0x2, 0x3, 0x80, 0x20000006, 0x4d, 0x6, 0x5f, 0x9, 0x5, 0xffff2d37, 0xff7fff01, 0x6, 0x3, 0x7, 0x5, 0x4, 0x0, 0x7, 0x3c5b, 0x1, 0x24, 0xd, 0x1, 0x0, 0xffffffff, 0xe661, 0x4, 0x7, 0x3, 0x8, 0x4c75, 0x10000, 0x242, 0x3, 0xe, 0x0, 0x80008071, 0x7, 0x17, 0x1, 0x7, 0x5, 0x5, 0x8e, 0x7, 0x6, 0x0, 0x5, 0x4, 0x30a429b, 0x3ff, 0x80, 0x0, 0x5, 0x6, 0x8, 0x4, 0x0, 0x40], [0x10000007, 0x100009, 0x8000012f, 0x8004, 0x5, 0xfffffff3, 0x129432e6, 0xc8, 0xf9, 0xe, 0x2bf, 0x6c7, 0x9, 0xfffffffc, 0x3, 0x0, 0x0, 0x5, 0x2f, 0xe, 0x312, 0x78, 0xea4, 0x7fff, 0x4, 0x7, 0x7fff, 0x6, 0x400, 0x401, 0x3, 0x1, 0xff, 0x5, 0x1000005, 0x5f31, 0xd, 0x4e0, 0x8, 0x4, 0xb, 0x4, 0x9, 0x5, 0x9, 0x6, 0x47, 0xff12, 0x1, 0xfe000000, 0xffff, 0x2, 0x4, 0x9, 0x3, 0x3, 0x9, 0x1, 0x3, 0x3, 0xbc45, 0x48c93690, 0x42, 0xe], [0x7, 0x40b, 0x4, 0x5, 0xfffffffe, 0x100, 0x4, 0x9, 0x5, 0x7fff, 0x0, 0x7, 0xb, 0x4, 0x5, 0x5, 0x0, 0x1ef, 0x5, 0x8, 0x86, 0x3, 0xa, 0x3e7, 0xb, 0x5, 0x2, 0x2, 0x1, 0x2000000b, 0x4, 0x6d01, 0x6, 0x38, 0x800003, 0x200, 0x80, 0xffffffff, 0x4, 0x2950bfaf, 0x1000, 0xa2, 0x7, 0xa9, 0x5, 0x6, 0xac8, 0xbf, 0x2, 0x3, 0x7ff, 0x12b, 0x4, 0x1, 0xa, 0x0, 0x5, 0x1c, 0x120000, 0x5, 0x2006, 0x80a2ed, 0x4, 0x25], [0x80000009, 0xbb33, 0x7, 0xb, 0x5, 0x938, 0x6, 0x6, 0x0, 0xb9, 0xce4, 0x1ff, 0x2, 0x57, 0x5, 0x3, 0x101, 0x4, 0x4, 0x3, 0xffff, 0xa620, 0x1, 0x5, 0x1, 0x3, 0x14c, 0x60a7, 0x4, 0x16, 0xffffffff, 0x80000000, 0x5, 0x4, 0xc8, 0x1, 0xfffff000, 0x10000, 0x3, 0x7e, 0x100, 0x9622, 0x7, 0xaf, 0x8, 0x6, 0x226, 0x5, 0x5, 0x0, 0x30b1d693, 0xa1f, 0xf40, 0x7, 0x1, 0x6c1b, 0x0, 0x4, 0xffffff80, 0xb1e, 0xd7, 0x200, 0xffff3441, 0xfff]}, 0x45c)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in check_tty_count
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-mkdirat-mount-mkdirat-mkdirat-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/functions/acm.usb0\x00', 0x1ff)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in check_tty_count
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-mkdirat-mount-mkdirat-mkdirat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./config/usb_gadget/g1/functions/acm.usb0\x00', 0x1ff)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-mkdirat-mount-mkdirat-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in check_tty_count
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./config\x00', &(0x7f0000000080)='configfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in check_tty_count
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-mkdirat-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in check_tty_count
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in check_tty_count
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', 0x0, 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program did not crash
testing program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
program crashed: KASAN: use-after-free Read in check_tty_count
simplifying C reproducer
testing compiled C program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
program did not crash
testing compiled C program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
program crashed: KASAN: use-after-free Write in release_tty
a never seen crash title: KASAN: use-after-free Write in release_tty, ignore
testing compiled C program (duration=34.189685635s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
program crashed: KASAN: use-after-free Write in release_tty
a never seen crash title: KASAN: use-after-free Write in release_tty, ignore
testing compiled C program (duration=34.189685635s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
program crashed: KASAN: use-after-free Read in tty_open
testing compiled C program (duration=34.189685635s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
program crashed: KASAN: use-after-free Read in tty_open
testing compiled C program (duration=34.189685635s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
program did not crash
testing compiled C program (duration=34.189685635s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
program crashed: KASAN: use-after-free Read in check_tty_count
testing program (duration=34.189685635s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in check_tty_count
validation run: crashed=true
testing program (duration=34.189685635s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in check_tty_count
validation run: crashed=true
testing program (duration=34.189685635s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-mkdirat-mkdirat-mkdirat-mount-openat-rmdir
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./my_configfs\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./my_configfs\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./my_configfs/usb_gadget/g1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f00000000a0)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f00000000a0)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./dev/ttyGS0\x00', 0x2, 0x0)
rmdir(&(0x7f0000000440)='./my_configfs/usb_gadget/g1/functions/obex.usb1\x00')
program crashed: KASAN: use-after-free Read in check_tty_count
validation run: crashed=true
reproducing took 30m16.894875661s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:72 [inline]
BUG: KASAN: use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: use-after-free in tty_port_kopened include/linux/tty_port.h:228 [inline]
BUG: KASAN: use-after-free in check_tty_count+0x1a8/0x330 drivers/tty/tty_io.c:287
Read of size 8 at addr ffff888118461110 by task syz.4.21/397
CPU: 1 PID: 397 Comm: syz.4.21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:88
dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
print_address_description+0x71/0x200 mm/kasan/report.c:316
print_report+0x4a/0x60 mm/kasan/report.c:420
kasan_report+0x122/0x150 mm/kasan/report.c:524
check_region_inline mm/kasan/generic.c:-1 [inline]
kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
__kasan_check_read+0x11/0x20 mm/kasan/shadow.c:31
instrument_atomic_read include/linux/instrumented.h:72 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
tty_port_kopened include/linux/tty_port.h:228 [inline]
check_tty_count+0x1a8/0x330 drivers/tty/tty_io.c:287
tty_release+0x88/0x11d0 drivers/tty/tty_io.c:1736
__fput+0x1fd/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f99d1b9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4ad6e4d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f99d1e27da0 RCX: 00007f99d1b9e0d9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f99d1e27da0 R08: 00007f99d1e26038 R09: 0000000000000000
R10: 000000000003fda0 R11: 0000000000000246 R12: 00000000000071bf
R13: 00007f99d1e25fac R14: 0000000000006ec2 R15: 00007fff4ad6e5e0
Allocated by task 398:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:380 [inline]
__kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
kasan_kmalloc include/linux/kasan.h:212 [inline]
kmalloc_trace+0x40/0xb0 mm/slab_common.c:1033
kmalloc include/linux/slab.h:563 [inline]
kzalloc include/linux/slab.h:699 [inline]
gs_port_alloc drivers/usb/gadget/function/u_serial.c:1166 [inline]
gserial_alloc_line_no_console+0x238/0x700 drivers/usb/gadget/function/u_serial.c:1246
obex_alloc_inst+0x86/0xe0 drivers/usb/gadget/function/f_obex.c:435
try_get_usb_function_instance drivers/usb/gadget/functions.c:28 [inline]
usb_get_function_instance+0xf3/0x310 drivers/usb/gadget/functions.c:44
function_make+0x118/0x360 drivers/usb/gadget/configfs.c:652
configfs_mkdir+0x518/0x9e0 fs/configfs/dir.c:1329
vfs_mkdir+0x39c/0x580 fs/namei.c:4113
do_mkdirat+0x174/0x4d0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4153 [inline]
__se_sys_mkdirat fs/namei.c:4151 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 398:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1750 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
slab_free mm/slub.c:3712 [inline]
__kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
kfree+0x6f/0xf0 mm/slab_common.c:990
gserial_free_port+0x240/0x2d0 drivers/usb/gadget/function/u_serial.c:1210
gserial_free_line+0x9b/0x1a0 drivers/usb/gadget/function/u_serial.c:1227
obex_free_inst+0x39/0x60 drivers/usb/gadget/function/f_obex.c:421
usb_put_function_instance+0x9b/0xc0 drivers/usb/gadget/functions.c:77
obex_attr_release+0x15/0x20 drivers/usb/gadget/function/f_obex.c:391
config_item_cleanup fs/configfs/item.c:128 [inline]
config_item_release fs/configfs/item.c:137 [inline]
kref_put include/linux/kref.h:65 [inline]
config_item_put+0x166/0x210 fs/configfs/item.c:149
configfs_rmdir+0x8c9/0x980 fs/configfs/dir.c:1540
vfs_rmdir+0x381/0x4f0 fs/namei.c:4198
do_rmdir+0x261/0x6b0 fs/namei.c:4259
__do_sys_rmdir fs/namei.c:4278 [inline]
__se_sys_rmdir fs/namei.c:4276 [inline]
__x64_sys_rmdir+0x49/0x50 fs/namei.c:4276
x64_sys_call+0x68e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:85
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
The buggy address belongs to the object at ffff888118461000
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 272 bytes inside of
1024-byte region [ffff888118461000, ffff888118461400)
The buggy address belongs to the physical page:
page:ffffea0004611800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118460
head:ffffea0004611800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 119, tgid 119 (udevd), ts 5293962794, free_ts 0
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4586
__alloc_pages+0x1fa/0x610 mm/page_alloc.c:5930
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3e0 mm/slub.c:2020
___slab_alloc+0x70f/0xb70 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc+0xa4/0x1e0 mm/slab_common.c:951
kmalloc include/linux/slab.h:568 [inline]
load_elf_phdrs+0x132/0x230 fs/binfmt_elf.c:507
load_elf_binary+0x9a3/0x2820 fs/binfmt_elf.c:987
search_binary_handler fs/exec.c:1768 [inline]
exec_binprm fs/exec.c:1809 [inline]
bprm_execve+0x782/0x1390 fs/exec.c:1878
do_execveat_common+0x8e3/0xaa0 fs/exec.c:1983
do_execve fs/exec.c:2057 [inline]
__do_sys_execve fs/exec.c:2133 [inline]
__se_sys_execve fs/exec.c:2128 [inline]
__x64_sys_execve+0x92/0xb0 fs/exec.c:2128
x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:60
page_owner free stack trace missing
Memory state around the buggy address:
ffff888118461000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888118461080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888118461100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888118461180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888118461200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
------------[ cut here ]------------
WARNING: CPU: 1 PID: 397 at drivers/usb/gadget/function/u_serial.c:694 gs_close+0x17d/0x9b0 drivers/usb/gadget/function/u_serial.c:694
Modules linked in:
CPU: 1 PID: 397 Comm: syz.4.21 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:gs_close+0x17d/0x9b0 drivers/usb/gadget/function/u_serial.c:694
Code: 74 23 fe 41 ff cc 42 0f b6 04 2b 84 c0 0f 85 cf 06 00 00 48 8b 44 24 20 44 89 20 48 8b 5c 24 38 e9 cb 02 00 00 e8 93 74 23 fe <0f> 0b 48 8b 5c 24 38 e9 ba 02 00 00 e8 82 74 23 fe 49 8d bf a8 02
RSP: 0018:ffffc90000a67b60 EFLAGS: 00010093
RAX: ffffffff834df1ad RBX: 1ffff1102308c21a RCX: ffff88810d7ee540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a67c80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200014cf5c R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff9200014cf74 R15: ffff888118461000
FS: 000055555b3a6500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc80958060 CR3: 000000012c0eb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tty_release+0x32b/0x11d0 drivers/tty/tty_io.c:1753
__fput+0x1fd/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f99d1b9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4ad6e4d8 EFLAGS: 00000246
ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f99d1e27da0 RCX: 00007f99d1b9e0d9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f99d1e27da0 R08: 00007f99d1e26038 R09: 0000000000000000
R10: 000000000003fda0 R11: 0000000000000246 R12: 00000000000071bf
R13: 00007f99d1e25fac R14: 0000000000006ec2 R15: 00007fff4ad6e5e0
---[ end trace 0000000000000000 ]---
general protection fault, probably for non-canonical address 0xe088bc2e00000020: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x0446017000000100-0x0446017000000107]
CPU: 1 PID: 397 Comm: syz.4.21 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:get_work_pool_id kernel/workqueue.c:767 [inline]
RIP: 0010:mark_work_canceling kernel/workqueue.c:774 [inline]
RIP: 0010:__cancel_work_timer+0x282/0x4d0 kernel/workqueue.c:3165
Code: 75 0b e8 51 10 29 00 49 c1 ef 05 eb 52 e8 46 10 29 00 49 81 e7 00 ff ff ff 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ff e8 d0 9a 6e 00 4d 8b 3f 49 83 c7 0c 4c
RSP: 0018:ffffc90000a67ac0 EFLAGS: 00010002
RAX: 0088c02e00000020 RBX: ffff888118461008 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffffc90000a67bc0 R08: 0000000000000007 R09: 00000000fffffffb
R10: dffffc0000000000 R11: ffffed102308c201 R12: 0000000000000000
R13: 1ffff1102308c201 R14: 1ffff9200014cf64 R15: 0446017000000100
FS: 000055555b3a6500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc80958060 CR3: 000000012c0eb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
cancel_work_sync+0x17/0x20 kernel/workqueue.c:3209
tty_buffer_cancel_work+0x19/0x20 drivers/tty/tty_buffer.c:692
release_tty+0x487/0x830 drivers/tty/tty_io.c:1596
tty_release_struct+0xbf/0xe0 drivers/tty/tty_io.c:1700
tty_release+0xbb7/0x11d0 drivers/tty/tty_io.c:1860
__fput+0x1fd/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f99d1b9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4ad6e4d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f99d1e27da0 RCX: 00007f99d1b9e0d9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f99d1e27da0 R08: 00007f99d1e26038 R09: 0000000000000000
R10: 000000000003fda0 R11: 0000000000000246 R12: 00000000000071bf
R13: 00007f99d1e25fac R14: 0000000000006ec2 R15: 00007fff4ad6e5e0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:get_work_pool_id kernel/workqueue.c:767 [inline]
RIP: 0010:mark_work_canceling kernel/workqueue.c:774 [inline]
RIP: 0010:__cancel_work_timer+0x282/0x4d0 kernel/workqueue.c:3165
Code: 75 0b e8 51 10 29 00 49 c1 ef 05 eb 52 e8 46 10 29 00 49 81 e7 00 ff ff ff 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ff e8 d0 9a 6e 00 4d 8b 3f 49 83 c7 0c 4c
RSP: 0018:ffffc90000a67ac0 EFLAGS: 00010002
RAX: 0088c02e00000020 RBX: ffff888118461008 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffffc90000a67bc0 R08: 0000000000000007 R09: 00000000fffffffb
R10: dffffc0000000000 R11: ffffed102308c201 R12: 0000000000000000
R13: 1ffff1102308c201 R14: 1ffff9200014cf64 R15: 0446017000000100
FS: 000055555b3a6500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc80958060 CR3: 000000012c0eb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 75 0b jne 0xd
2: e8 51 10 29 00 call 0x291058
7: 49 c1 ef 05 shr $0x5,%r15
b: eb 52 jmp 0x5f
d: e8 46 10 29 00 call 0x291058
12: 49 81 e7 00 ff ff ff and $0xffffffffffffff00,%r15
19: 4c 89 f8 mov %r15,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
27: fc ff df
* 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 4c 89 ff mov %r15,%rdi
33: e8 d0 9a 6e 00 call 0x6e9b08
38: 4d 8b 3f mov (%r15),%r15
3b: 49 83 c7 0c add $0xc,%r15
3f: 4c rex.WR
final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:72 [inline]
BUG: KASAN: use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: use-after-free in tty_port_kopened include/linux/tty_port.h:228 [inline]
BUG: KASAN: use-after-free in check_tty_count+0x1a8/0x330 drivers/tty/tty_io.c:287
Read of size 8 at addr ffff888118461110 by task syz.4.21/397
CPU: 1 PID: 397 Comm: syz.4.21 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:88
dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
print_address_description+0x71/0x200 mm/kasan/report.c:316
print_report+0x4a/0x60 mm/kasan/report.c:420
kasan_report+0x122/0x150 mm/kasan/report.c:524
check_region_inline mm/kasan/generic.c:-1 [inline]
kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
__kasan_check_read+0x11/0x20 mm/kasan/shadow.c:31
instrument_atomic_read include/linux/instrumented.h:72 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
tty_port_kopened include/linux/tty_port.h:228 [inline]
check_tty_count+0x1a8/0x330 drivers/tty/tty_io.c:287
tty_release+0x88/0x11d0 drivers/tty/tty_io.c:1736
__fput+0x1fd/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f99d1b9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4ad6e4d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f99d1e27da0 RCX: 00007f99d1b9e0d9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f99d1e27da0 R08: 00007f99d1e26038 R09: 0000000000000000
R10: 000000000003fda0 R11: 0000000000000246 R12: 00000000000071bf
R13: 00007f99d1e25fac R14: 0000000000006ec2 R15: 00007fff4ad6e5e0
Allocated by task 398:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:380 [inline]
__kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
kasan_kmalloc include/linux/kasan.h:212 [inline]
kmalloc_trace+0x40/0xb0 mm/slab_common.c:1033
kmalloc include/linux/slab.h:563 [inline]
kzalloc include/linux/slab.h:699 [inline]
gs_port_alloc drivers/usb/gadget/function/u_serial.c:1166 [inline]
gserial_alloc_line_no_console+0x238/0x700 drivers/usb/gadget/function/u_serial.c:1246
obex_alloc_inst+0x86/0xe0 drivers/usb/gadget/function/f_obex.c:435
try_get_usb_function_instance drivers/usb/gadget/functions.c:28 [inline]
usb_get_function_instance+0xf3/0x310 drivers/usb/gadget/functions.c:44
function_make+0x118/0x360 drivers/usb/gadget/configfs.c:652
configfs_mkdir+0x518/0x9e0 fs/configfs/dir.c:1329
vfs_mkdir+0x39c/0x580 fs/namei.c:4113
do_mkdirat+0x174/0x4d0 fs/namei.c:4138
__do_sys_mkdirat fs/namei.c:4153 [inline]
__se_sys_mkdirat fs/namei.c:4151 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4151
x64_sys_call+0x73d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:259
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 398:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1750 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
slab_free mm/slub.c:3712 [inline]
__kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
kfree+0x6f/0xf0 mm/slab_common.c:990
gserial_free_port+0x240/0x2d0 drivers/usb/gadget/function/u_serial.c:1210
gserial_free_line+0x9b/0x1a0 drivers/usb/gadget/function/u_serial.c:1227
obex_free_inst+0x39/0x60 drivers/usb/gadget/function/f_obex.c:421
usb_put_function_instance+0x9b/0xc0 drivers/usb/gadget/functions.c:77
obex_attr_release+0x15/0x20 drivers/usb/gadget/function/f_obex.c:391
config_item_cleanup fs/configfs/item.c:128 [inline]
config_item_release fs/configfs/item.c:137 [inline]
kref_put include/linux/kref.h:65 [inline]
config_item_put+0x166/0x210 fs/configfs/item.c:149
configfs_rmdir+0x8c9/0x980 fs/configfs/dir.c:1540
vfs_rmdir+0x381/0x4f0 fs/namei.c:4198
do_rmdir+0x261/0x6b0 fs/namei.c:4259
__do_sys_rmdir fs/namei.c:4278 [inline]
__se_sys_rmdir fs/namei.c:4276 [inline]
__x64_sys_rmdir+0x49/0x50 fs/namei.c:4276
x64_sys_call+0x68e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:85
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
The buggy address belongs to the object at ffff888118461000
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 272 bytes inside of
1024-byte region [ffff888118461000, ffff888118461400)
The buggy address belongs to the physical page:
page:ffffea0004611800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118460
head:ffffea0004611800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 119, tgid 119 (udevd), ts 5293962794, free_ts 0
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4586
__alloc_pages+0x1fa/0x610 mm/page_alloc.c:5930
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3e0 mm/slub.c:2020
___slab_alloc+0x70f/0xb70 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc+0xa4/0x1e0 mm/slab_common.c:951
kmalloc include/linux/slab.h:568 [inline]
load_elf_phdrs+0x132/0x230 fs/binfmt_elf.c:507
load_elf_binary+0x9a3/0x2820 fs/binfmt_elf.c:987
search_binary_handler fs/exec.c:1768 [inline]
exec_binprm fs/exec.c:1809 [inline]
bprm_execve+0x782/0x1390 fs/exec.c:1878
do_execveat_common+0x8e3/0xaa0 fs/exec.c:1983
do_execve fs/exec.c:2057 [inline]
__do_sys_execve fs/exec.c:2133 [inline]
__se_sys_execve fs/exec.c:2128 [inline]
__x64_sys_execve+0x92/0xb0 fs/exec.c:2128
x64_sys_call+0x98/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:60
page_owner free stack trace missing
Memory state around the buggy address:
ffff888118461000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888118461080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888118461100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888118461180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888118461200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
------------[ cut here ]------------
WARNING: CPU: 1 PID: 397 at drivers/usb/gadget/function/u_serial.c:694 gs_close+0x17d/0x9b0 drivers/usb/gadget/function/u_serial.c:694
Modules linked in:
CPU: 1 PID: 397 Comm: syz.4.21 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:gs_close+0x17d/0x9b0 drivers/usb/gadget/function/u_serial.c:694
Code: 74 23 fe 41 ff cc 42 0f b6 04 2b 84 c0 0f 85 cf 06 00 00 48 8b 44 24 20 44 89 20 48 8b 5c 24 38 e9 cb 02 00 00 e8 93 74 23 fe <0f> 0b 48 8b 5c 24 38 e9 ba 02 00 00 e8 82 74 23 fe 49 8d bf a8 02
RSP: 0018:ffffc90000a67b60 EFLAGS: 00010093
RAX: ffffffff834df1ad RBX: 1ffff1102308c21a RCX: ffff88810d7ee540
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a67c80 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200014cf5c R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff9200014cf74 R15: ffff888118461000
FS: 000055555b3a6500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc80958060 CR3: 000000012c0eb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tty_release+0x32b/0x11d0 drivers/tty/tty_io.c:1753
__fput+0x1fd/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f99d1b9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4ad6e4d8 EFLAGS: 00000246
ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f99d1e27da0 RCX: 00007f99d1b9e0d9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f99d1e27da0 R08: 00007f99d1e26038 R09: 0000000000000000
R10: 000000000003fda0 R11: 0000000000000246 R12: 00000000000071bf
R13: 00007f99d1e25fac R14: 0000000000006ec2 R15: 00007fff4ad6e5e0
---[ end trace 0000000000000000 ]---
general protection fault, probably for non-canonical address 0xe088bc2e00000020: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x0446017000000100-0x0446017000000107]
CPU: 1 PID: 397 Comm: syz.4.21 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:get_work_pool_id kernel/workqueue.c:767 [inline]
RIP: 0010:mark_work_canceling kernel/workqueue.c:774 [inline]
RIP: 0010:__cancel_work_timer+0x282/0x4d0 kernel/workqueue.c:3165
Code: 75 0b e8 51 10 29 00 49 c1 ef 05 eb 52 e8 46 10 29 00 49 81 e7 00 ff ff ff 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ff e8 d0 9a 6e 00 4d 8b 3f 49 83 c7 0c 4c
RSP: 0018:ffffc90000a67ac0 EFLAGS: 00010002
RAX: 0088c02e00000020 RBX: ffff888118461008 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffffc90000a67bc0 R08: 0000000000000007 R09: 00000000fffffffb
R10: dffffc0000000000 R11: ffffed102308c201 R12: 0000000000000000
R13: 1ffff1102308c201 R14: 1ffff9200014cf64 R15: 0446017000000100
FS: 000055555b3a6500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc80958060 CR3: 000000012c0eb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
cancel_work_sync+0x17/0x20 kernel/workqueue.c:3209
tty_buffer_cancel_work+0x19/0x20 drivers/tty/tty_buffer.c:692
release_tty+0x487/0x830 drivers/tty/tty_io.c:1596
tty_release_struct+0xbf/0xe0 drivers/tty/tty_io.c:1700
tty_release+0xbb7/0x11d0 drivers/tty/tty_io.c:1860
__fput+0x1fd/0x8f0 fs/file_table.c:320
____fput+0x15/0x20 fs/file_table.c:348
task_work_run+0x1e1/0x250 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f99d1b9e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff4ad6e4d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f99d1e27da0 RCX: 00007f99d1b9e0d9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f99d1e27da0 R08: 00007f99d1e26038 R09: 0000000000000000
R10: 000000000003fda0 R11: 0000000000000246 R12: 00000000000071bf
R13: 00007f99d1e25fac R14: 0000000000006ec2 R15: 00007fff4ad6e5e0
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:get_work_pool_id kernel/workqueue.c:767 [inline]
RIP: 0010:mark_work_canceling kernel/workqueue.c:774 [inline]
RIP: 0010:__cancel_work_timer+0x282/0x4d0 kernel/workqueue.c:3165
Code: 75 0b e8 51 10 29 00 49 c1 ef 05 eb 52 e8 46 10 29 00 49 81 e7 00 ff ff ff 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ff e8 d0 9a 6e 00 4d 8b 3f 49 83 c7 0c 4c
RSP: 0018:ffffc90000a67ac0 EFLAGS: 00010002
RAX: 0088c02e00000020 RBX: ffff888118461008 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffffc90000a67bc0 R08: 0000000000000007 R09: 00000000fffffffb
R10: dffffc0000000000 R11: ffffed102308c201 R12: 0000000000000000
R13: 1ffff1102308c201 R14: 1ffff9200014cf64 R15: 0446017000000100
FS: 000055555b3a6500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbc80958060 CR3: 000000012c0eb000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 75 0b jne 0xd
2: e8 51 10 29 00 call 0x291058
7: 49 c1 ef 05 shr $0x5,%r15
b: eb 52 jmp 0x5f
d: e8 46 10 29 00 call 0x291058
12: 49 81 e7 00 ff ff ff and $0xffffffffffffff00,%r15
19: 4c 89 f8 mov %r15,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
27: fc ff df
* 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 4c 89 ff mov %r15,%rdi
33: e8 d0 9a 6e 00 call 0x6e9b08
38: 4d 8b 3f mov (%r15),%r15
3b: 49 83 c7 0c add $0xc,%r15
3f: 4c rex.WR