Extracting prog: 51m8.368020018s
Minimizing prog: 2m57.918727192s
Simplifying prog options: 0s
Extracting C: 49.492901133s
Simplifying C: 29m39.657818133s


extracting reproducer from 24 programs
testing a last program of every proc
single: executing 4 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): waitid
detailed listing:
executing program 0:
waitid(0x300, 0x0, 0x0, 0x4, 0x0)

program did not crash
program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="120100024650d310450c0a8047db010203010902120001000000000904"], 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)

program did not crash
single: failed to extract reproducer
bisect: bisecting 24 programs with base timeout 30s
testing program (duration=36s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
detailed listing:
executing program 0:
syz_usb_connect$cdc_ecm(0x3, 0x77, &(0x7f0000000000)=ANY=[@ANYBLOB="12011001020000082505a1a4400001020301090265000101020005090400810302060001052406000005240005000d240f0109000000831f0000001524120500a3"], 0x0)
executing program 2:
mount(0x0, &(0x7f0000000040)='./cgroup\x00', &(0x7f0000000000)='gadgetfs\x00', 0x2a4040, 0x0)
executing program 2:
semop(0x0, &(0x7f00000000c0)=[{0xee, 0x4}], 0x1)
executing program 2:
syz_usb_connect(0x2, 0x2d, &(0x7f0000000040)=ANY=[@ANYBLOB="120100000cb768405e0483020b990102030109021b000100000000090400000101292000090509"], 0x0)
executing program 0:
syz_usb_connect(0x5, 0x4a, &(0x7f0000000240)=ANY=[@ANYBLOB="12011001d4f86540d804830047da000003010902380001020840b3090400b201020201e6022406"], 0x0)
executing program 3:
openat$snapshot(0xffffffffffffff9c, &(0x7f0000000100), 0x80002, 0x0)
executing program 3:
syz_usb_connect(0x2, 0x24, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0xcd, 0xef, 0x96, 0x8, 0x17cc, 0xd8d, 0xb1c5, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x57, 0x0, 0x0, 0xf0, 0x31, 0xd}}]}}]}}, 0x0)
executing program 1:
syz_clone3(&(0x7f0000000440)={0x100040000, 0x0, 0x0, 0x0, {0x13}, 0x0, 0x0, 0x0, 0x0}, 0x58)
executing program 2:
add_key(&(0x7f0000000000)='big_key\x00', 0x0, 0x0, 0x0, 0xfffffffffffffffc)
executing program 0:
msgrcv(0x0, 0x0, 0x0, 0x2, 0x4800)
executing program 1:
inotify_init()
executing program 2:
syz_usb_connect(0x5, 0x2d, &(0x7f00000003c0)=ANY=[@ANYBLOB="12010000d3ccb510b1134200292b0102030109021b0001fc00000009040f0001e711e100090583ff03"], 0x0)
executing program 0:
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/binder/transaction_log\x00', 0x600, 0x0)
executing program 1:
keyctl$read(0x3f, 0x0, 0x0, 0x0)
executing program 0:
syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="04360702aaaaaaaaaa10"], 0xa)
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 1:
mount(&(0x7f00000000c0)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./cgroup\x00', &(0x7f0000000000)='gfs2\x00', 0x2000c18, &(0x7f0000000100)='barrier')
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)
executing program 3:
semctl$SEM_STAT(0x0, 0x4, 0x12, &(0x7f0000000140)=""/4096)
executing program 3:
socket(0x6, 0x2, 0x1)
executing program 3:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="120100024650d310450c0a8047db010203010902120001000000000904"], 0x0)
executing program 2:
waitid(0x300, 0x0, 0x0, 0x4, 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
bisect: bisecting 24 programs
bisect: split chunks (needed=false): <24>
bisect: split chunk #0 of len 24 into 3 parts
bisect: testing without sub-chunk 1/3
testing program (duration=34s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
detailed listing:
executing program 2:
add_key(&(0x7f0000000000)='big_key\x00', 0x0, 0x0, 0x0, 0xfffffffffffffffc)
executing program 0:
msgrcv(0x0, 0x0, 0x0, 0x2, 0x4800)
executing program 1:
inotify_init()
executing program 2:
syz_usb_connect(0x5, 0x2d, &(0x7f00000003c0)=ANY=[@ANYBLOB="12010000d3ccb510b1134200292b0102030109021b0001fc00000009040f0001e711e100090583ff03"], 0x0)
executing program 0:
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/binder/transaction_log\x00', 0x600, 0x0)
executing program 1:
keyctl$read(0x3f, 0x0, 0x0, 0x0)
executing program 0:
syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="04360702aaaaaaaaaa10"], 0xa)
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 1:
mount(&(0x7f00000000c0)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./cgroup\x00', &(0x7f0000000000)='gfs2\x00', 0x2000c18, &(0x7f0000000100)='barrier')
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)
executing program 3:
semctl$SEM_STAT(0x0, 0x4, 0x12, &(0x7f0000000140)=""/4096)
executing program 3:
socket(0x6, 0x2, 0x1)
executing program 3:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="120100024650d310450c0a8047db010203010902120001000000000904"], 0x0)
executing program 2:
waitid(0x300, 0x0, 0x0, 0x4, 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
bisect: the chunk can be dropped
bisect: testing without sub-chunk 2/3
testing program (duration=32s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1, 1, 1, 1, 1]
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 1:
mount(&(0x7f00000000c0)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./cgroup\x00', &(0x7f0000000000)='gfs2\x00', 0x2000c18, &(0x7f0000000100)='barrier')
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)
executing program 3:
semctl$SEM_STAT(0x0, 0x4, 0x12, &(0x7f0000000140)=""/4096)
executing program 3:
socket(0x6, 0x2, 0x1)
executing program 3:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="120100024650d310450c0a8047db010203010902120001000000000904"], 0x0)
executing program 2:
waitid(0x300, 0x0, 0x0, 0x4, 0x0)

program did not crash
bisect: testing without sub-chunk 3/3
testing program (duration=32s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1, 1, 1, 1, 1]
detailed listing:
executing program 2:
add_key(&(0x7f0000000000)='big_key\x00', 0x0, 0x0, 0x0, 0xfffffffffffffffc)
executing program 0:
msgrcv(0x0, 0x0, 0x0, 0x2, 0x4800)
executing program 1:
inotify_init()
executing program 2:
syz_usb_connect(0x5, 0x2d, &(0x7f00000003c0)=ANY=[@ANYBLOB="12010000d3ccb510b1134200292b0102030109021b0001fc00000009040f0001e711e100090583ff03"], 0x0)
executing program 0:
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/binder/transaction_log\x00', 0x600, 0x0)
executing program 1:
keyctl$read(0x3f, 0x0, 0x0, 0x0)
executing program 0:
syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="04360702aaaaaaaaaa10"], 0xa)
executing program 1:
mlockall(0x4)

program did not crash
bisect: split chunks (needed=true): <8>, <8>
bisect: split chunk #0 of len 8 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=33s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
detailed listing:
executing program 0:
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/binder/transaction_log\x00', 0x600, 0x0)
executing program 1:
keyctl$read(0x3f, 0x0, 0x0, 0x0)
executing program 0:
syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="04360702aaaaaaaaaa10"], 0xa)
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 1:
mount(&(0x7f00000000c0)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./cgroup\x00', &(0x7f0000000000)='gfs2\x00', 0x2000c18, &(0x7f0000000100)='barrier')
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)
executing program 3:
semctl$SEM_STAT(0x0, 0x4, 0x12, &(0x7f0000000140)=""/4096)
executing program 3:
socket(0x6, 0x2, 0x1)
executing program 3:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="120100024650d310450c0a8047db010203010902120001000000000904"], 0x0)
executing program 2:
waitid(0x300, 0x0, 0x0, 0x4, 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
bisect: the chunk can be dropped
bisect: testing without sub-chunk 2/2
bisect: no need to test this chunk, it's definitely needed
bisect: split chunk #1 of len 8 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=32s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1, 1, 1, 1, 1]
detailed listing:
executing program 0:
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/binder/transaction_log\x00', 0x600, 0x0)
executing program 1:
keyctl$read(0x3f, 0x0, 0x0, 0x0)
executing program 0:
syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="04360702aaaaaaaaaa10"], 0xa)
executing program 1:
mlockall(0x4)
executing program 3:
semctl$SEM_STAT(0x0, 0x4, 0x12, &(0x7f0000000140)=""/4096)
executing program 3:
socket(0x6, 0x2, 0x1)
executing program 3:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="120100024650d310450c0a8047db010203010902120001000000000904"], 0x0)
executing program 2:
waitid(0x300, 0x0, 0x0, 0x4, 0x0)

program did not crash
bisect: testing without sub-chunk 2/2
testing program (duration=32s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1, 1, 1, 1, 1]
detailed listing:
executing program 0:
openat$binder_debug(0xffffffffffffff9c, &(0x7f0000000280)='/sys/kernel/debug/binder/transaction_log\x00', 0x600, 0x0)
executing program 1:
keyctl$read(0x3f, 0x0, 0x0, 0x0)
executing program 0:
syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="04360702aaaaaaaaaa10"], 0xa)
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 1:
mount(&(0x7f00000000c0)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./cgroup\x00', &(0x7f0000000000)='gfs2\x00', 0x2000c18, &(0x7f0000000100)='barrier')
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
bisect: the chunk can be dropped
bisect: split chunks (needed=true): <4>, <4>
bisect: split chunk #0 of len 4 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1, 1, 1]
detailed listing:
executing program 0:
syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="04360702aaaaaaaaaa10"], 0xa)
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 1:
mount(&(0x7f00000000c0)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./cgroup\x00', &(0x7f0000000000)='gfs2\x00', 0x2000c18, &(0x7f0000000100)='barrier')
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
bisect: the chunk can be dropped
bisect: testing without sub-chunk 2/2
bisect: no need to test this chunk, it's definitely needed
bisect: split chunk #1 of len 4 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1]
detailed listing:
executing program 0:
syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="04360702aaaaaaaaaa10"], 0xa)
executing program 1:
mlockall(0x4)
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program did not crash
bisect: testing without sub-chunk 2/2
testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1]
detailed listing:
executing program 0:
syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="04360702aaaaaaaaaa10"], 0xa)
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 1:
mount(&(0x7f00000000c0)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./cgroup\x00', &(0x7f0000000000)='gfs2\x00', 0x2000c18, &(0x7f0000000100)='barrier')

program did not crash
bisect: split chunks (needed=true): <2>, <2>, <2>
bisect: split chunk #0 of len 2 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1, 1]
detailed listing:
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 1:
mount(&(0x7f00000000c0)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./cgroup\x00', &(0x7f0000000000)='gfs2\x00', 0x2000c18, &(0x7f0000000100)='barrier')
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
bisect: the chunk can be dropped
bisect: testing without sub-chunk 2/2
bisect: no need to test this chunk, it's definitely needed
bisect: split chunk #1 of len 2 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1]
detailed listing:
executing program 1:
mlockall(0x4)
executing program 1:
mount(&(0x7f00000000c0)=@loop={'/dev/loop', 0x0}, &(0x7f0000000080)='./cgroup\x00', &(0x7f0000000000)='gfs2\x00', 0x2000c18, &(0x7f0000000100)='barrier')
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program did not crash
bisect: testing without sub-chunk 2/2
testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1, 1]
detailed listing:
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
bisect: the chunk can be dropped
bisect: split chunk #2 of len 2 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1]
detailed listing:
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program did not crash
bisect: testing without sub-chunk 2/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [1, 1, 1]
detailed listing:
executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)

program did not crash
bisect: split chunks (needed=true): <1>, <1>, <1>, <1>
bisect: split chunk #0 of len 1 into 2 parts
bisect: no way to further split the chunk
bisect: split chunk #1 of len 1 into 2 parts
bisect: no way to further split the chunk
bisect: split chunk #2 of len 1 into 2 parts
bisect: no way to further split the chunk
bisect: split chunk #3 of len 1 into 2 parts
bisect: no way to further split the chunk
bisect: 4 programs left: 

executing program 1:
mlockall(0x4)
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)


bisect: trying to concatenate
bisect: concatenate 4 entries
minimizing program #0 before concatenation
testing program (duration=46.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [0, 1, 1, 1]
detailed listing:
executing program 0:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
minimized 1 calls -> 0 calls
minimizing program #1 before concatenation
testing program (duration=46.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [0, 0, 1, 1]
detailed listing:
executing program 1:
executing program 0:
executing program 3:
syz_io_uring_setup(0x317c, &(0x7f0000000140)={0x0, 0x8e5, 0xdae298fde8666b51, 0x2, 0x1af}, 0x0, 0x0)
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program did not crash
minimized 1 calls -> 1 calls
minimizing program #2 before concatenation
testing program (duration=46.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [0, 1, 0, 1]
detailed listing:
executing program 1:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 0:
executing program 1:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000680)=ANY=[@ANYBLOB="12010000061c2f20c81403006c050102030109021b00010000000009040000018ea44300090585"], 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
minimized 1 calls -> 0 calls
minimizing program #3 before concatenation
testing program (duration=46.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [0, 1, 0, 0]
detailed listing:
executing program 1:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)
executing program 3:
executing program 0:

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
minimized 1 calls -> 0 calls
testing program (duration=46.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
bisect: concatenation succeeded
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=46.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=46.5s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
simplifying C reproducer
testing compiled C program (duration=46.5s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
testing compiled C program (duration=46.5s, {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}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
testing compiled C program (duration=46.5s, {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}}): syz_usb_connect
program did not crash
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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}}): syz_usb_connect
program did not crash
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false 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
program did not crash
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:false 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
program did not crash
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false 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
program did not crash
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false 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
program did not crash
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:false 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
program did not crash
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program did not crash
testing compiled C program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program did not crash
testing program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
validation run: crashed=true
testing program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
validation run: crashed=true
testing program (duration=46.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f0000000040)={{0x12, 0x1, 0x0, 0xc4, 0xe4, 0x7, 0x40, 0x14aa, 0x22b, 0x5619, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x0, 0x0, 0x40, 0x0, [{{0x9, 0x4, 0xdb, 0x0, 0x0, 0xb1, 0x94, 0xd9}}]}}]}}, 0x0)

program crashed: KASAN: slab-use-after-free Read in media_devnode_unregister
validation run: crashed=true
reproducing took 1h32m17.245487708s
repro crashed as (corrupted=false):
input: WideView WT-220U PenType Receiver (based on ZL353) as /devices/platform/dummy_hcd.0/usb1/1-1/rc/rc0/input5
dvb-usb: schedule remote query interval to 300 msecs.
dvb-usb: WideView WT-220U PenType Receiver (based on ZL353) successfully initialized and connected.
usb 1-1: USB disconnect, device number 2
==================================================================
BUG: KASAN: slab-use-after-free in media_devnode_unregister+0xe2/0xf0 drivers/media/mc/mc-devnode.c:284
Read of size 4 at addr ffff888144e904f0 by task kworker/1:2/980

CPU: 1 UID: 0 PID: 980 Comm: kworker/1:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xca/0x240 mm/kasan/report.c:482
 kasan_report+0x118/0x150 mm/kasan/report.c:595
 media_devnode_unregister+0xe2/0xf0 drivers/media/mc/mc-devnode.c:284
 media_device_unregister+0x37c/0x400 drivers/media/mc/mc-device.c:828
 dvb_usb_media_device_unregister drivers/media/usb/dvb-usb/dvb-usb-dvb.c:136 [inline]
 dvb_usb_adapter_dvb_exit+0xf3/0x1b0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:226
 dvb_usb_adapter_exit+0x8b/0x240 drivers/media/usb/dvb-usb/dvb-usb-init.c:128
 dvb_usb_exit drivers/media/usb/dvb-usb/dvb-usb-init.c:143 [inline]
 dvb_usb_device_exit+0x1b6/0x350 drivers/media/usb/dvb-usb/dvb-usb-init.c:338
 usb_unbind_interface+0x26e/0x910 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:571 [inline]
 __device_release_driver drivers/base/dd.c:1274 [inline]
 device_release_driver_internal+0x4d6/0x800 drivers/base/dd.c:1297
 bus_remove_device+0x34d/0x410 drivers/base/bus.c:579
 device_del+0x511/0x8e0 drivers/base/core.c:3878
 usb_disable_device+0x3e9/0x8a0 drivers/usb/core/message.c:1418
 usb_disconnect+0x330/0x950 drivers/usb/core/hub.c:2344
 hub_port_connect drivers/usb/core/hub.c:5406 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x1cf5/0x4a20 drivers/usb/core/hub.c:5952
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 980:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 poison_kmalloc_redzone mm/kasan/common.c:397 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:414
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x3d5/0x6f0 mm/slub.c:5397
 kmalloc_noprof include/linux/slab.h:956 [inline]
 kzalloc_noprof include/linux/slab.h:1090 [inline]
 __media_device_register+0x58/0x280 drivers/media/mc/mc-device.c:720
 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:90 [inline]
 dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:186 [inline]
 dvb_usb_device_init+0x1bed/0x2580 drivers/media/usb/dvb-usb/dvb-usb-init.c:310
 dtt200u_usb_probe+0xb5/0x120 drivers/media/usb/dvb-usb/dtt200u.c:152
 usb_probe_interface+0x665/0xc30 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9e0 drivers/base/dd.c:659
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1031
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3689
 usb_set_configuration+0x1a87/0x20e0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
 usb_probe_device+0x1c1/0x390 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9e0 drivers/base/dd.c:659
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1031
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3689
 usb_new_device+0xa39/0x16f0 drivers/usb/core/hub.c:2694
 hub_port_connect drivers/usb/core/hub.c:5566 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x2958/0x4a20 drivers/usb/core/hub.c:5952
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 980:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 __kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587
 kasan_save_free_info mm/kasan/kasan.h:406 [inline]
 poison_slab_object mm/kasan/common.c:252 [inline]
 __kasan_slab_free+0x5b/0x80 mm/kasan/common.c:284
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2484 [inline]
 slab_free mm/slub.c:6121 [inline]
 kfree+0x199/0x6d0 mm/slub.c:6329
 media_devnode_release+0x61/0xa0 drivers/media/mc/mc-devnode.c:57
 device_release+0x9c/0x1c0 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x228/0x480 lib/kobject.c:737
 media_devnode_unregister+0x6d/0xf0 drivers/media/mc/mc-devnode.c:281
 media_device_unregister+0x37c/0x400 drivers/media/mc/mc-device.c:828
 dvb_usb_media_device_unregister drivers/media/usb/dvb-usb/dvb-usb-dvb.c:136 [inline]
 dvb_usb_adapter_dvb_exit+0xf3/0x1b0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:226
 dvb_usb_adapter_exit+0x8b/0x240 drivers/media/usb/dvb-usb/dvb-usb-init.c:128
 dvb_usb_exit drivers/media/usb/dvb-usb/dvb-usb-init.c:143 [inline]
 dvb_usb_device_exit+0x1b6/0x350 drivers/media/usb/dvb-usb/dvb-usb-init.c:338
 usb_unbind_interface+0x26e/0x910 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:571 [inline]
 __device_release_driver drivers/base/dd.c:1274 [inline]
 device_release_driver_internal+0x4d6/0x800 drivers/base/dd.c:1297
 bus_remove_device+0x34d/0x410 drivers/base/bus.c:579
 device_del+0x511/0x8e0 drivers/base/core.c:3878
 usb_disable_device+0x3e9/0x8a0 drivers/usb/core/message.c:1418
 usb_disconnect+0x330/0x950 drivers/usb/core/hub.c:2344
 hub_port_connect drivers/usb/core/hub.c:5406 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x1cf5/0x4a20 drivers/usb/core/hub.c:5952
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff888144e90000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1264 bytes inside of
 freed 2048-byte region [ffff888144e90000, ffff888144e90800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x144e90
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff88801a842000 ffffea000512b600 dead000000000002
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 057ff00000000040 ffff88801a842000 ffffea000512b600 dead000000000002
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 057ff00000000003 ffffea000513a401 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
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 1, tgid 1 (swapper/0), ts 4002246788, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3863
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5153
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:2996 [inline]
 allocate_slab+0x8a/0x330 mm/slub.c:3164
 new_slab mm/slub.c:3218 [inline]
 ___slab_alloc+0xbd1/0x13f0 mm/slub.c:4420
 __slab_alloc+0x55/0xa0 mm/slub.c:4511
 __slab_alloc_node mm/slub.c:4586 [inline]
 slab_alloc_node mm/slub.c:4996 [inline]
 __kmalloc_cache_noprof+0x411/0x6f0 mm/slub.c:5392
 kmalloc_noprof include/linux/slab.h:956 [inline]
 kzalloc_noprof include/linux/slab.h:1090 [inline]
 acpi_ds_create_walk_state+0xd9/0x270 drivers/acpi/acpica/dswstate.c:518
 acpi_ps_execute_method+0x220/0x7c0 drivers/acpi/acpica/psxface.c:134
 acpi_ns_evaluate+0x5a6/0xa20 drivers/acpi/acpica/nseval.c:205
 acpi_evaluate_object+0x53f/0xa10 drivers/acpi/acpica/nsxfeval.c:354
 acpi_evaluate_integer+0xfc/0x270 drivers/acpi/utils.c:260
 acpi_bus_get_status_handle drivers/acpi/bus.c:82 [inline]
 acpi_bus_get_status+0x14a/0x380 drivers/acpi/bus.c:111
 acpi_bus_attach+0x232/0xbb0 drivers/acpi/scan.c:2283
 device_for_each_child+0x103/0x190 drivers/base/core.c:4018
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888144e90380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888144e90400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888144e90480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff888144e90500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888144e90580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
input: WideView WT-220U PenType Receiver (based on ZL353) as /devices/platform/dummy_hcd.0/usb1/1-1/rc/rc0/input5
dvb-usb: schedule remote query interval to 300 msecs.
dvb-usb: WideView WT-220U PenType Receiver (based on ZL353) successfully initialized and connected.
usb 1-1: USB disconnect, device number 2
==================================================================
BUG: KASAN: slab-use-after-free in media_devnode_unregister+0xe2/0xf0 drivers/media/mc/mc-devnode.c:284
Read of size 4 at addr ffff888144e904f0 by task kworker/1:2/980

CPU: 1 UID: 0 PID: 980 Comm: kworker/1:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xca/0x240 mm/kasan/report.c:482
 kasan_report+0x118/0x150 mm/kasan/report.c:595
 media_devnode_unregister+0xe2/0xf0 drivers/media/mc/mc-devnode.c:284
 media_device_unregister+0x37c/0x400 drivers/media/mc/mc-device.c:828
 dvb_usb_media_device_unregister drivers/media/usb/dvb-usb/dvb-usb-dvb.c:136 [inline]
 dvb_usb_adapter_dvb_exit+0xf3/0x1b0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:226
 dvb_usb_adapter_exit+0x8b/0x240 drivers/media/usb/dvb-usb/dvb-usb-init.c:128
 dvb_usb_exit drivers/media/usb/dvb-usb/dvb-usb-init.c:143 [inline]
 dvb_usb_device_exit+0x1b6/0x350 drivers/media/usb/dvb-usb/dvb-usb-init.c:338
 usb_unbind_interface+0x26e/0x910 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:571 [inline]
 __device_release_driver drivers/base/dd.c:1274 [inline]
 device_release_driver_internal+0x4d6/0x800 drivers/base/dd.c:1297
 bus_remove_device+0x34d/0x410 drivers/base/bus.c:579
 device_del+0x511/0x8e0 drivers/base/core.c:3878
 usb_disable_device+0x3e9/0x8a0 drivers/usb/core/message.c:1418
 usb_disconnect+0x330/0x950 drivers/usb/core/hub.c:2344
 hub_port_connect drivers/usb/core/hub.c:5406 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x1cf5/0x4a20 drivers/usb/core/hub.c:5952
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 980:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 poison_kmalloc_redzone mm/kasan/common.c:397 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:414
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x3d5/0x6f0 mm/slub.c:5397
 kmalloc_noprof include/linux/slab.h:956 [inline]
 kzalloc_noprof include/linux/slab.h:1090 [inline]
 __media_device_register+0x58/0x280 drivers/media/mc/mc-device.c:720
 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:90 [inline]
 dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:186 [inline]
 dvb_usb_device_init+0x1bed/0x2580 drivers/media/usb/dvb-usb/dvb-usb-init.c:310
 dtt200u_usb_probe+0xb5/0x120 drivers/media/usb/dvb-usb/dtt200u.c:152
 usb_probe_interface+0x665/0xc30 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9e0 drivers/base/dd.c:659
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1031
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3689
 usb_set_configuration+0x1a87/0x20e0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
 usb_probe_device+0x1c1/0x390 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x26a/0x9e0 drivers/base/dd.c:659
 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
 driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
 __device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
 bus_for_each_drv+0x251/0x2e0 drivers/base/bus.c:462
 __device_attach+0x2b8/0x400 drivers/base/dd.c:1031
 bus_probe_device+0x185/0x260 drivers/base/bus.c:537
 device_add+0x7b6/0xb50 drivers/base/core.c:3689
 usb_new_device+0xa39/0x16f0 drivers/usb/core/hub.c:2694
 hub_port_connect drivers/usb/core/hub.c:5566 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x2958/0x4a20 drivers/usb/core/hub.c:5952
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 980:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
 __kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587
 kasan_save_free_info mm/kasan/kasan.h:406 [inline]
 poison_slab_object mm/kasan/common.c:252 [inline]
 __kasan_slab_free+0x5b/0x80 mm/kasan/common.c:284
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2484 [inline]
 slab_free mm/slub.c:6121 [inline]
 kfree+0x199/0x6d0 mm/slub.c:6329
 media_devnode_release+0x61/0xa0 drivers/media/mc/mc-devnode.c:57
 device_release+0x9c/0x1c0 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x228/0x480 lib/kobject.c:737
 media_devnode_unregister+0x6d/0xf0 drivers/media/mc/mc-devnode.c:281
 media_device_unregister+0x37c/0x400 drivers/media/mc/mc-device.c:828
 dvb_usb_media_device_unregister drivers/media/usb/dvb-usb/dvb-usb-dvb.c:136 [inline]
 dvb_usb_adapter_dvb_exit+0xf3/0x1b0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:226
 dvb_usb_adapter_exit+0x8b/0x240 drivers/media/usb/dvb-usb/dvb-usb-init.c:128
 dvb_usb_exit drivers/media/usb/dvb-usb/dvb-usb-init.c:143 [inline]
 dvb_usb_device_exit+0x1b6/0x350 drivers/media/usb/dvb-usb/dvb-usb-init.c:338
 usb_unbind_interface+0x26e/0x910 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:571 [inline]
 __device_release_driver drivers/base/dd.c:1274 [inline]
 device_release_driver_internal+0x4d6/0x800 drivers/base/dd.c:1297
 bus_remove_device+0x34d/0x410 drivers/base/bus.c:579
 device_del+0x511/0x8e0 drivers/base/core.c:3878
 usb_disable_device+0x3e9/0x8a0 drivers/usb/core/message.c:1418
 usb_disconnect+0x330/0x950 drivers/usb/core/hub.c:2344
 hub_port_connect drivers/usb/core/hub.c:5406 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
 port_event drivers/usb/core/hub.c:5870 [inline]
 hub_event+0x1cf5/0x4a20 drivers/usb/core/hub.c:5952
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff888144e90000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1264 bytes inside of
 freed 2048-byte region [ffff888144e90000, ffff888144e90800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x144e90
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff88801a842000 ffffea000512b600 dead000000000002
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 057ff00000000040 ffff88801a842000 ffffea000512b600 dead000000000002
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 057ff00000000003 ffffea000513a401 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
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 1, tgid 1 (swapper/0), ts 4002246788, free_ts 0
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3863
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5153
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_slab_page mm/slub.c:2996 [inline]
 allocate_slab+0x8a/0x330 mm/slub.c:3164
 new_slab mm/slub.c:3218 [inline]
 ___slab_alloc+0xbd1/0x13f0 mm/slub.c:4420
 __slab_alloc+0x55/0xa0 mm/slub.c:4511
 __slab_alloc_node mm/slub.c:4586 [inline]
 slab_alloc_node mm/slub.c:4996 [inline]
 __kmalloc_cache_noprof+0x411/0x6f0 mm/slub.c:5392
 kmalloc_noprof include/linux/slab.h:956 [inline]
 kzalloc_noprof include/linux/slab.h:1090 [inline]
 acpi_ds_create_walk_state+0xd9/0x270 drivers/acpi/acpica/dswstate.c:518
 acpi_ps_execute_method+0x220/0x7c0 drivers/acpi/acpica/psxface.c:134
 acpi_ns_evaluate+0x5a6/0xa20 drivers/acpi/acpica/nseval.c:205
 acpi_evaluate_object+0x53f/0xa10 drivers/acpi/acpica/nsxfeval.c:354
 acpi_evaluate_integer+0xfc/0x270 drivers/acpi/utils.c:260
 acpi_bus_get_status_handle drivers/acpi/bus.c:82 [inline]
 acpi_bus_get_status+0x14a/0x380 drivers/acpi/bus.c:111
 acpi_bus_attach+0x232/0xbb0 drivers/acpi/scan.c:2283
 device_for_each_child+0x103/0x190 drivers/base/core.c:4018
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888144e90380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888144e90400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888144e90480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff888144e90500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888144e90580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================