Extracting prog: 5m55.480166659s
Minimizing prog: 50.156443976s
Simplifying prog options: 0s
Extracting C: 1m21.923804962s
Simplifying C: 18m17.084425998s


extracting reproducer from 30 programs
testing a last program of every proc
single: executing 5 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-openat$ppp-socket$unix-socket$nl_route-syz_open_dev$sndctrl-openat-openat$audio-socket$nl_netfilter-syz_open_dev$dri-socket$nl_route-socket-syz_usb_connect-sendmsg$NL80211_CMD_GET_COALESCE-getsockname$packet-socket$nl_route-sendmsg$nl_route-sendmsg$nl_route_sched
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
openat$ppp(0xffffffffffffff9c, &(0x7f0000001740), 0x101042, 0x0)
socket$unix(0x1, 0x1, 0x0)
socket$nl_route(0x10, 0x3, 0x0)
syz_open_dev$sndctrl(&(0x7f0000000440), 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000380)='./cgroup.cpu/cgroup.procs\x00', 0x0, 0x0)
openat$audio(0xffffffffffffff9c, &(0x7f0000000140), 0x40000000040201, 0x0)
socket$nl_netfilter(0x10, 0x3, 0xc)
syz_open_dev$dri(&(0x7f0000000300), 0x1, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket(0x10, 0x803, 0x0)
syz_usb_connect(0x2, 0x24, &(0x7f0000000080)={{0x12, 0x1, 0x150, 0xd3, 0x12, 0x36, 0x10, 0x9fb, 0x602a, 0xfd36, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x5, 0x0, 0x0, 0x0, [{{0x9, 0x4, 0x3, 0x0, 0x0, 0xaa, 0x72, 0x59}}]}}]}}, 0x0)
sendmsg$NL80211_CMD_GET_COALESCE(r1, &(0x7f0000000600)={0x0, 0x0, &(0x7f0000000400)={0x0, 0x14}}, 0x0)
getsockname$packet(r1, &(0x7f0000000200)={0x11, 0x0, <r2=>0x0, 0x1, 0x0, 0x6, @broadcast}, &(0x7f0000000040)=0x8f)
r3 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r3, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000340)=ANY=[@ANYBLOB="3c0000001000030400000006000000005dcc0300", @ANYRES32=r2, @ANYBLOB="71e79fd800000000140012800c0001006d616376746170001400028008000500", @ANYRES32=r3], 0x3c}, 0x1, 0x0, 0x0, 0x10}, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000100)=@newtfilter={0x2c, 0x10, 0x1, 0x0, 0x0, {0x0, 0x0, 0x74, r2, {0xffe0}, {}, {0xa, 0x1}}, [@TCA_RATE={0x6, 0x5, {0x39, 0x1}}]}, 0x2c}, 0x1, 0xf0ffffffffffff, 0x0, 0x4040940}, 0x0)

program did not crash
program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet-setsockopt$inet_tcp_int-bind$inet-setsockopt$SO_ATTACH_FILTER-sendto$inet-sendmsg-setsockopt$sock_int-sendto$inet
detailed listing:
executing program 0:
r0 = socket$inet(0x2, 0x4000000000000001, 0x0)
setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f00000004c0)=0x79, 0x4)
bind$inet(r0, &(0x7f0000000080)={0x2, 0x4e23, @local}, 0x10)
setsockopt$SO_ATTACH_FILTER(r0, 0x1, 0x1a, &(0x7f0000000000)={0x1, &(0x7f0000000280)=[{0x6, 0xfa, 0x0, 0xe4}]}, 0x10)
sendto$inet(r0, 0x0, 0x0, 0x200007fd, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10)
sendmsg(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000dc0)=[{&(0x7f0000001180)="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", 0x5b9}, {0x0}], 0x2}, 0x40000040)
setsockopt$sock_int(r0, 0x1, 0x8, &(0x7f0000000600)=0xdfa, 0x4)
sendto$inet(r0, &(0x7f0000000580)="17", 0x59a, 0x10008095, 0x0, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$cgroup_ro-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-socket$inet_smc-setsockopt$ARPT_SO_SET_REPLACE
detailed listing:
executing program 0:
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000001c0)='memory.events\x00', 0x275a, 0x0)
r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18010000000000000000000000000000850000006d00000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x0, '\x00', 0x0, 0x2}, 0x94)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000080)={&(0x7f0000000000)='sched_switch\x00', r0, 0x0, 0xfffffffffffffffb}, 0x18)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r2=>0xffffffffffffffff, <r3=>0xffffffffffffffff})
connect$unix(r2, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(r3, &(0x7f0000000000), 0x651, 0x0)
recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6)
r4 = socket$inet_smc(0x2b, 0x1, 0x0)
setsockopt$ARPT_SO_SET_REPLACE(r4, 0x0, 0x60, &(0x7f0000000000)={'filter\x00', 0x7, 0x4, 0x3e0, 0x110, 0x0, 0x110, 0x2f8, 0x2f8, 0x2f8, 0x4, 0x0, {[{{@uncond, 0xc0, 0x110}, @mangle={0x50, 'mangle\x00', 0x0, {@mac, @mac=@remote, @loopback, @local, 0x1, 0x1}}}, {{@arp={@multicast2, @private=0xa010100, 0xff, 0xffffff00, 0xc, 0x4, {@mac=@link_local={0x1, 0x80, 0xc2, 0x0, 0x0, 0x1}, {[0xff, 0xff, 0xff, 0xff, 0x0, 0xbe9240b8a223bba0]}}, {@mac=@dev={'\xaa\xaa\xaa\xaa\xaa', 0x24}, {[0xff, 0x0, 0xff, 0xff, 0xff]}}, 0x2, 0x6, 0x23b0, 0x9dd7, 0x80, 0x9, 'veth1_vlan\x00', 'ip_vti0\x00', {0xff}, {0xff}, 0x0, 0x12}, 0xc0, 0x100}, @unspec=@ERROR={0x40, 'ERROR\x00', 0x0, "716ebd2e1aa0cc683e62f312359594df00da56317f76121697127951fdba"}}, {{@uncond, 0xc0, 0xe8}, @unspec=@NFQUEUE0={0x28}}], {{'\x00', 0xc0, 0xe8}, {0x28}}}}, 0x430)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x3, 0x2d, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x70, 0x7a, 0x5a, 0x20, 0xeb1a, 0xe303, 0x24c5, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0xb7, 0x0, 0x1, 0xa0, 0xdf, 0xdb, 0xfe, [], [{{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0)

program crashed: KASAN: use-after-free Read in load_firmware_cb
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=45.32360746s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x3, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.32360746s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: use-after-free Read in load_firmware_cb
simplifying C reproducer
testing compiled C program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: use-after-free Read in load_firmware_cb
testing compiled C program (duration=45.32360746s, {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 did not crash
testing compiled C program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: use-after-free Read in load_firmware_cb
testing compiled C program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program did not crash
testing compiled C program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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 did not crash
testing compiled C program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false 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 did not crash
testing compiled C program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false 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 did not crash
testing compiled C program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true 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=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true 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=45.32360746s, {Threaded:false 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: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=45.32360746s, {Threaded:false 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: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=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi: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=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154: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: use-after-free Read in load_firmware_cb
testing compiled C program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true 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=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false 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: use-after-free Read in load_firmware_cb
testing compiled C program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false 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 program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false 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, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x70, 0x7a, 0x5a, 0x20, 0xeb1a, 0xe303, 0x24c5, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0xb7, 0x0, 0x1, 0xa0, 0xdf, 0xdb, 0xfe, [], [{{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0)

program did not crash
validation run: crashed=false
testing program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false 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, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x70, 0x7a, 0x5a, 0x20, 0xeb1a, 0xe303, 0x24c5, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0xb7, 0x0, 0x1, 0xa0, 0xdf, 0xdb, 0xfe, [], [{{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0)

program did not crash
validation run: crashed=false
testing program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false 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, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x70, 0x7a, 0x5a, 0x20, 0xeb1a, 0xe303, 0x24c5, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0xb7, 0x0, 0x1, 0xa0, 0xdf, 0xdb, 0xfe, [], [{{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0)

program crashed: KASAN: use-after-free Read in load_firmware_cb
validation run: crashed=true
testing program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false 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, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x70, 0x7a, 0x5a, 0x20, 0xeb1a, 0xe303, 0x24c5, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0xb7, 0x0, 0x1, 0xa0, 0xdf, 0xdb, 0xfe, [], [{{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0)

program crashed: KASAN: use-after-free Read in load_firmware_cb
validation run: crashed=true
testing program (duration=45.32360746s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false 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, &(0x7f0000000000)={{0x12, 0x1, 0x0, 0x70, 0x7a, 0x5a, 0x20, 0xeb1a, 0xe303, 0x24c5, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x1, 0x0, 0x0, 0x10, 0x0, [{{0x9, 0x4, 0xb7, 0x0, 0x1, 0xa0, 0xdf, 0xdb, 0xfe, [], [{{0x9, 0x5, 0x82, 0x2, 0x200}}]}}]}}]}}, 0x0)

program crashed: KASAN: use-after-free Read in load_firmware_cb
validation run: crashed=true
reproducing took 31m31.408183069s
repro crashed as (corrupted=false):
firmware xc3028-v27.fw: fw_load_sysfs_fallback: device_register failed
==================================================================
BUG: KASAN: use-after-free in load_firmware_cb+0xbc/0x14f4 drivers/media/tuners/xc2028.c:1372
Read of size 8 at addr ffff0000d35ed318 by task kworker/0:9/4382

CPU: 0 PID: 4382 Comm: kworker/0:9 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: events request_firmware_work_func
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 print_address_description+0x88/0x218 mm/kasan/report.c:316
 print_report+0x50/0x68 mm/kasan/report.c:420
 kasan_report+0xa8/0x100 mm/kasan/report.c:524
 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351
 load_firmware_cb+0xbc/0x14f4 drivers/media/tuners/xc2028.c:1372
 request_firmware_work_func+0xe8/0x19c drivers/base/firmware_loader/main.c:1137
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

Allocated by task 4382:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_alloc_info+0x28/0x34 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xa0/0xb8 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 kmalloc_trace+0x7c/0x94 mm/slab_common.c:1031
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 tuner_probe+0xc4/0x1680 drivers/media/v4l2-core/tuner-core.c:638
 i2c_device_probe+0x680/0x8f4 drivers/i2c/i2c-core-base.c:590
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x39c/0xae0 drivers/base/dd.c:639
 __driver_probe_device+0x180/0x314 drivers/base/dd.c:785
 driver_probe_device+0x78/0x330 drivers/base/dd.c:815
 __device_attach_driver+0x290/0x4e0 drivers/base/dd.c:943
 bus_for_each_drv+0x150/0x1d8 drivers/base/bus.c:429
 __device_attach+0x2a8/0x3d4 drivers/base/dd.c:1015
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1064
 bus_probe_device+0xbc/0x1c4 drivers/base/bus.c:489
 device_add+0xb04/0xf94 drivers/base/core.c:3697
 device_register+0x28/0x38 drivers/base/core.c:3779
 i2c_new_client_device+0x87c/0xe6c drivers/i2c/i2c-core-base.c:1018
 v4l2_i2c_new_subdev_board+0xb0/0x20c drivers/media/v4l2-core/v4l2-i2c.c:80
 v4l2_i2c_new_subdev+0x120/0x19c drivers/media/v4l2-core/v4l2-i2c.c:135
 em28xx_v4l2_init+0x6f4/0x2918 drivers/media/usb/em28xx/em28xx-video.c:2617
 em28xx_init_extension+0x10c/0x1b4 drivers/media/usb/em28xx/em28xx-core.c:1116
 request_module_async+0x68/0x98 drivers/media/usb/em28xx/em28xx-cards.c:3405
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 process_scheduled_works kernel/workqueue.c:2355 [inline]
 worker_thread+0xae4/0xfbc kernel/workqueue.c:2444
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

Freed by task 4382:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_free_info+0x3c/0x60 mm/kasan/generic.c:516
 ____kasan_slab_free+0x148/0x1b0 mm/kasan/common.c:236
 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1729 [inline]
 slab_free_freelist_hook+0x16c/0x1ec mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 __kmem_cache_free+0xc0/0x224 mm/slub.c:3700
 kfree+0xd0/0x1ac mm/slab_common.c:988
 tuner_remove+0x1d8/0x1f4 drivers/media/v4l2-core/tuner-core.c:791
 i2c_device_remove+0x8c/0x1c0 drivers/i2c/i2c-core-base.c:631
 device_remove drivers/base/dd.c:548 [inline]
 __device_release_driver drivers/base/dd.c:1260 [inline]
 device_release_driver_internal+0x3d4/0x6d0 drivers/base/dd.c:1286
 device_release_driver+0x28/0x38 drivers/base/dd.c:1309
 bus_remove_device+0x294/0x388 drivers/base/bus.c:531
 device_del+0x568/0x96c drivers/base/core.c:3885
 device_unregister+0x2c/0xcc drivers/base/core.c:3928
 i2c_unregister_device+0x114/0x16c drivers/i2c/i2c-core-base.c:1066
 v4l2_i2c_subdev_unregister+0xa8/0xbc drivers/media/v4l2-core/v4l2-i2c.c:28
 v4l2_device_unregister+0x170/0x248 drivers/media/v4l2-core/v4l2-device.c:102
 em28xx_v4l2_init+0x1328/0x2918 drivers/media/usb/em28xx/em28xx-video.c:2898
 em28xx_init_extension+0x10c/0x1b4 drivers/media/usb/em28xx/em28xx-core.c:1116
 request_module_async+0x68/0x98 drivers/media/usb/em28xx/em28xx-cards.c:3405
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 process_scheduled_works kernel/workqueue.c:2355 [inline]
 worker_thread+0xae4/0xfbc kernel/workqueue.c:2444
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

The buggy address belongs to the object at ffff0000d35ed000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 792 bytes inside of
 2048-byte region [ffff0000d35ed000, ffff0000d35ed800)

The buggy address belongs to the physical page:
page:000000005b468e1d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1135e8
head:000000005b468e1d order:3 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0002900
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d35ed200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000d35ed280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000d35ed300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff0000d35ed380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000d35ed400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Unable to handle kernel paging request at virtual address dfff800000000005
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff800000000005] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4382 Comm: kworker/0:9 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: events request_firmware_work_func
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : load_firmware_cb+0x22c/0x14f4 drivers/media/tuners/xc2028.c:1376
lr : load_firmware_cb+0xe0/0x14f4 drivers/media/tuners/xc2028.c:1374
sp : ffff8000211a7940
x29: ffff8000211a7a90 x28: ffff00019f6d4800 x27: 0000000000000000
x26: dfff800000000000 x25: ffff700004234f3c x24: 1fffe0001a6bda63
x23: ffff8000211a79e0 x22: 0000000000000000 x21: 0000000000000000
x20: 0000000000000000 x19: ffff0000d35ed318 x18: ffff800011abbcc0
x17: 1fffe00033ed797e x16: ffff800008042d60 x15: ffff8000150bd000
x14: 0000000000000100 x13: 0000000000000120 x12: 0000000000ff0100
x11: ff0080000dfc1a40 x10: 0000000000000000 x9 : ffff80000dfc1a40
x8 : 0000000000000005 x7 : 0000000000000004 x6 : ffff800008251e10
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008191794
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000028
Call trace:
 load_firmware_cb+0x22c/0x14f4 drivers/media/tuners/xc2028.c:1376
 request_firmware_work_func+0xe8/0x19c drivers/base/firmware_loader/main.c:1137
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Code: b5fff65b f9403bf6 9100a2c0 d343fc08 (387a6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	b5fff65b 	cbnz	x27, 0xfffffffffffffec8
   4:	f9403bf6 	ldr	x22, [sp, #112]
   8:	9100a2c0 	add	x0, x22, #0x28
   c:	d343fc08 	lsr	x8, x0, #3
* 10:	387a6908 	ldrb	w8, [x8, x26] <-- trapping instruction

final repro crashed as (corrupted=false):
firmware xc3028-v27.fw: fw_load_sysfs_fallback: device_register failed
==================================================================
BUG: KASAN: use-after-free in load_firmware_cb+0xbc/0x14f4 drivers/media/tuners/xc2028.c:1372
Read of size 8 at addr ffff0000d35ed318 by task kworker/0:9/4382

CPU: 0 PID: 4382 Comm: kworker/0:9 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: events request_firmware_work_func
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 print_address_description+0x88/0x218 mm/kasan/report.c:316
 print_report+0x50/0x68 mm/kasan/report.c:420
 kasan_report+0xa8/0x100 mm/kasan/report.c:524
 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351
 load_firmware_cb+0xbc/0x14f4 drivers/media/tuners/xc2028.c:1372
 request_firmware_work_func+0xe8/0x19c drivers/base/firmware_loader/main.c:1137
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

Allocated by task 4382:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_alloc_info+0x28/0x34 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xa0/0xb8 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 kmalloc_trace+0x7c/0x94 mm/slab_common.c:1031
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 tuner_probe+0xc4/0x1680 drivers/media/v4l2-core/tuner-core.c:638
 i2c_device_probe+0x680/0x8f4 drivers/i2c/i2c-core-base.c:590
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x39c/0xae0 drivers/base/dd.c:639
 __driver_probe_device+0x180/0x314 drivers/base/dd.c:785
 driver_probe_device+0x78/0x330 drivers/base/dd.c:815
 __device_attach_driver+0x290/0x4e0 drivers/base/dd.c:943
 bus_for_each_drv+0x150/0x1d8 drivers/base/bus.c:429
 __device_attach+0x2a8/0x3d4 drivers/base/dd.c:1015
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1064
 bus_probe_device+0xbc/0x1c4 drivers/base/bus.c:489
 device_add+0xb04/0xf94 drivers/base/core.c:3697
 device_register+0x28/0x38 drivers/base/core.c:3779
 i2c_new_client_device+0x87c/0xe6c drivers/i2c/i2c-core-base.c:1018
 v4l2_i2c_new_subdev_board+0xb0/0x20c drivers/media/v4l2-core/v4l2-i2c.c:80
 v4l2_i2c_new_subdev+0x120/0x19c drivers/media/v4l2-core/v4l2-i2c.c:135
 em28xx_v4l2_init+0x6f4/0x2918 drivers/media/usb/em28xx/em28xx-video.c:2617
 em28xx_init_extension+0x10c/0x1b4 drivers/media/usb/em28xx/em28xx-core.c:1116
 request_module_async+0x68/0x98 drivers/media/usb/em28xx/em28xx-cards.c:3405
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 process_scheduled_works kernel/workqueue.c:2355 [inline]
 worker_thread+0xae4/0xfbc kernel/workqueue.c:2444
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

Freed by task 4382:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_free_info+0x3c/0x60 mm/kasan/generic.c:516
 ____kasan_slab_free+0x148/0x1b0 mm/kasan/common.c:236
 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1729 [inline]
 slab_free_freelist_hook+0x16c/0x1ec mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 __kmem_cache_free+0xc0/0x224 mm/slub.c:3700
 kfree+0xd0/0x1ac mm/slab_common.c:988
 tuner_remove+0x1d8/0x1f4 drivers/media/v4l2-core/tuner-core.c:791
 i2c_device_remove+0x8c/0x1c0 drivers/i2c/i2c-core-base.c:631
 device_remove drivers/base/dd.c:548 [inline]
 __device_release_driver drivers/base/dd.c:1260 [inline]
 device_release_driver_internal+0x3d4/0x6d0 drivers/base/dd.c:1286
 device_release_driver+0x28/0x38 drivers/base/dd.c:1309
 bus_remove_device+0x294/0x388 drivers/base/bus.c:531
 device_del+0x568/0x96c drivers/base/core.c:3885
 device_unregister+0x2c/0xcc drivers/base/core.c:3928
 i2c_unregister_device+0x114/0x16c drivers/i2c/i2c-core-base.c:1066
 v4l2_i2c_subdev_unregister+0xa8/0xbc drivers/media/v4l2-core/v4l2-i2c.c:28
 v4l2_device_unregister+0x170/0x248 drivers/media/v4l2-core/v4l2-device.c:102
 em28xx_v4l2_init+0x1328/0x2918 drivers/media/usb/em28xx/em28xx-video.c:2898
 em28xx_init_extension+0x10c/0x1b4 drivers/media/usb/em28xx/em28xx-core.c:1116
 request_module_async+0x68/0x98 drivers/media/usb/em28xx/em28xx-cards.c:3405
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 process_scheduled_works kernel/workqueue.c:2355 [inline]
 worker_thread+0xae4/0xfbc kernel/workqueue.c:2444
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850

The buggy address belongs to the object at ffff0000d35ed000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 792 bytes inside of
 2048-byte region [ffff0000d35ed000, ffff0000d35ed800)

The buggy address belongs to the physical page:
page:000000005b468e1d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1135e8
head:000000005b468e1d order:3 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0002900
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d35ed200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000d35ed280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000d35ed300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff0000d35ed380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000d35ed400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Unable to handle kernel paging request at virtual address dfff800000000005
KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
[dfff800000000005] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4382 Comm: kworker/0:9 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: events request_firmware_work_func
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : load_firmware_cb+0x22c/0x14f4 drivers/media/tuners/xc2028.c:1376
lr : load_firmware_cb+0xe0/0x14f4 drivers/media/tuners/xc2028.c:1374
sp : ffff8000211a7940
x29: ffff8000211a7a90 x28: ffff00019f6d4800 x27: 0000000000000000
x26: dfff800000000000 x25: ffff700004234f3c x24: 1fffe0001a6bda63
x23: ffff8000211a79e0 x22: 0000000000000000 x21: 0000000000000000
x20: 0000000000000000 x19: ffff0000d35ed318 x18: ffff800011abbcc0
x17: 1fffe00033ed797e x16: ffff800008042d60 x15: ffff8000150bd000
x14: 0000000000000100 x13: 0000000000000120 x12: 0000000000ff0100
x11: ff0080000dfc1a40 x10: 0000000000000000 x9 : ffff80000dfc1a40
x8 : 0000000000000005 x7 : 0000000000000004 x6 : ffff800008251e10
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008191794
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000028
Call trace:
 load_firmware_cb+0x22c/0x14f4 drivers/media/tuners/xc2028.c:1376
 request_firmware_work_func+0xe8/0x19c drivers/base/firmware_loader/main.c:1137
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Code: b5fff65b f9403bf6 9100a2c0 d343fc08 (387a6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	b5fff65b 	cbnz	x27, 0xfffffffffffffec8
   4:	f9403bf6 	ldr	x22, [sp, #112]
   8:	9100a2c0 	add	x0, x22, #0x28
   c:	d343fc08 	lsr	x8, x0, #3
* 10:	387a6908 	ldrb	w8, [x8, x26] <-- trapping instruction