Extracting prog: 2m7.518078038s
Minimizing prog: 15m4.652744779s
Simplifying prog options: 0s
Extracting C: 27.022481058s
Simplifying C: 6m27.375553211s


extracting reproducer from 21 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-setsockopt$IPT_SO_SET_REPLACE-syz_usb_connect$uac2-getgroups-openat-socket$inet-setsockopt$sock_int-close-socket$unix-openat$ttyS3-mount$9p_fd-sendto$packet
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
setsockopt$IPT_SO_SET_REPLACE(r0, 0x0, 0x40, &(0x7f0000000000)=@raw={'raw\x00', 0x8, 0x3, 0x298, 0x0, 0x43, 0xa0, 0x0, 0x98, 0x200, 0x178, 0x178, 0x200, 0x178, 0x49, 0x0, {[{{@ip={@loopback, @local, 0x0, 0x0, 'veth0_to_bond\x00', 'ip6erspan0\x00'}, 0x12a, 0xf0, 0x118, 0x0, {0x0, 0x7a010000}, [@common=@unspec=@connbytes={{0x38}, {[{0x5}, {0xff}], 0x2, 0x1}}, @common=@unspec=@helper={{0x48}, {0x0, 'ftp-20000\x00'}}]}, @common=@unspec=@MARK={0x28, 'MARK\x00', 0x2, {0x2, 0x8}}}, {{@uncond, 0x0, 0xa8, 0xe8, 0x0, {}, [@common=@unspec=@connbytes={{0x38}, {[{0xb}]}}]}, @common=@unspec=@ERROR={0x40, 'ERROR\x00', 0x0, "f1c098b60204ed02d82cf440fef5497b80c29d381d41116000"}}], {{'\x00', 0x0, 0x70, 0x98}, {0x28, '\x00', 0x4}}}}, 0x2f8)
syz_usb_connect$uac2(0x0, 0xd8, &(0x7f0000000500)=ANY=[@ANYBLOB="120110030000004035120c804000010203010902c6000301053009080b00010109208c0904000013010120000924010040041d000708240a0001ff23000c24030207030304000700810904010000010220000904010101010220000824020188040c040024020110020805c4beffc72d6c56e4d10f240201050304809b4df03a1b9c0f1024014b400200000000084000000061090501090002030b040825010000400400090402000001022000090402010101022000092402020400cc1c051024010201", @ANYRESDEC=r0], &(0x7f0000000040)={0x0, 0x0, 0x0, 0x0})
getgroups(0x10cef6c6345e94e2, 0xfffffffffffffffe)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1)
r2 = socket$inet(0x2, 0x2, 0x0)
setsockopt$sock_int(r2, 0xffff, 0x8000, &(0x7f0000002300)=0x200000fd, 0x13)
close(r1)
r3 = socket$unix(0x1, 0x5, 0x0)
openat$ttyS3(0xffffffffffffff9c, &(0x7f00000003c0), 0x8400, 0x0)
mount$9p_fd(0x0, &(0x7f00000002c0)='./file0\x00', &(0x7f0000000040), 0x400, &(0x7f0000000180)={'trans=fd,', {'rfdno', 0x3d, r1}, 0x2c, {'wfdno', 0x3d, r3}})
sendto$packet(r1, &(0x7f0000000300)="92a9ab28d6352f1b9ead3332550220ce337bc72d8ae831b952ecf6e25a0e71dd195a6a5dc2fad1fe122cae1cfc5065090807090ae4520da167a30d132293bb8fb012a39bf154394cf6db8c2ae0966f23bb54809d6709fc019c074f7de9e4f2c52035b104eed1d067d868b2d55255f38cda4087c489a753b08c816a49552cb56805948dd276a6", 0x86, 0x40, 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci-ioctl$sock_inet_SIOCSIFADDR-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-close-syz_init_net_socket$nfc_llcp-fcntl$dupfd-syz_usb_connect$uac2
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r2, 0x400448dd, &(0x7f00000000c0))
ioctl$sock_inet_SIOCSIFADDR(r2, 0x8916, 0x0)
bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000140)={0xd, 0x4, &(0x7f0000000040)=ANY=[@ANYBLOB="18000000000000000000000000e014470f0000000000000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0xc}, 0x94)
close(0x3)
r3 = syz_init_net_socket$nfc_llcp(0x27, 0x3, 0x1)
fcntl$dupfd(r3, 0x0, 0xffffffffffffffff)
syz_usb_connect$uac2(0x3, 0x8c, &(0x7f0000000340)={{0x12, 0x1, 0x300, 0x0, 0x0, 0x0, 0x40, 0xe41, 0x4750, 0x40, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x7a, 0x3, 0x1, 0x40, 0x30, 0x3, {0x8, 0xb, 0x0, 0x2, 0x1, 0x4, 0x20, 0x6}, {{{0x9, 0x4, 0x0, 0x0, 0x0, 0x1, 0x1, 0x20, 0x0, {{0x9, 0x24, 0x1, 0x2, 0x6, 0x1a, 0x2}, [@processing_unit={0x5, 0x24, 0x8, 0x3, 0x6}, @output_terminal={0xc, 0x24, 0x3, 0x4, 0x302, 0x1, 0x3, 0xd, 0x7, 0xc}]}}, {}, {0x9, 0x4, 0x1, 0x1, 0x1, 0x1, 0x2, 0x20, 0x0, {}, {{0x9, 0x5, 0x1, 0x9, 0x20, 0x8, 0x5, 0x0, {0x8, 0x25, 0x1, 0x0, 0x6, 0x4, 0x4}}}}, {}, {0x9, 0x4, 0x2, 0x1, 0x1, 0x1, 0x2, 0x20, 0x0, {}, {{0x9, 0x5, 0x82, 0x9, 0x3ff, 0x3, 0xe6, 0x40, {0x8, 0x25, 0x1, 0x86b97c5ce7dde820, 0x3, 0xfe, 0x5}}}}}}}}]}}, &(0x7f00000002c0)={0x0, 0x0, 0x0, 0x0})

program crashed: KASAN: use-after-free Write in __run_timers
single: successfully extracted reproducer
found reproducer with 14 syscalls
minimizing guilty program
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci-ioctl$sock_inet_SIOCSIFADDR-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-close-syz_init_net_socket$nfc_llcp-fcntl$dupfd
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r2, 0x400448dd, &(0x7f00000000c0))
ioctl$sock_inet_SIOCSIFADDR(r2, 0x8916, 0x0)
bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000140)={0xd, 0x4, &(0x7f0000000040)=ANY=[@ANYBLOB="18000000000000000000000000e014470f0000000000000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0xc}, 0x94)
close(0x3)
r3 = syz_init_net_socket$nfc_llcp(0x27, 0x3, 0x1)
fcntl$dupfd(r3, 0x0, 0xffffffffffffffff)

program crashed: KASAN: use-after-free Write in enqueue_timer
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci-ioctl$sock_inet_SIOCSIFADDR-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-close-syz_init_net_socket$nfc_llcp
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r2, 0x400448dd, &(0x7f00000000c0))
ioctl$sock_inet_SIOCSIFADDR(r2, 0x8916, 0x0)
bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000140)={0xd, 0x4, &(0x7f0000000040)=ANY=[@ANYBLOB="18000000000000000000000000e014470f0000000000000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0xc}, 0x94)
close(0x3)
syz_init_net_socket$nfc_llcp(0x27, 0x3, 0x1)

program crashed: KASAN: use-after-free Write in enqueue_timer
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci-ioctl$sock_inet_SIOCSIFADDR-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-close
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r2, 0x400448dd, &(0x7f00000000c0))
ioctl$sock_inet_SIOCSIFADDR(r2, 0x8916, 0x0)
bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000140)={0xd, 0x4, &(0x7f0000000040)=ANY=[@ANYBLOB="18000000000000000000000000e014470f0000000000000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0xc}, 0x94)
close(0x3)

program crashed: KASAN: use-after-free Write in enqueue_timer
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci-ioctl$sock_inet_SIOCSIFADDR-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r2, 0x400448dd, &(0x7f00000000c0))
ioctl$sock_inet_SIOCSIFADDR(r2, 0x8916, 0x0)
bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000140)={0xd, 0x4, &(0x7f0000000040)=ANY=[@ANYBLOB="18000000000000000000000000e014470f0000000000000095"], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0xc}, 0x94)

program crashed: KASAN: use-after-free Write in __run_timers
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci-ioctl$sock_inet_SIOCSIFADDR
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r2, 0x400448dd, &(0x7f00000000c0))
ioctl$sock_inet_SIOCSIFADDR(r2, 0x8916, 0x0)

program crashed: KASAN: use-after-free Write in enqueue_timer
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r2, 0x400448dd, &(0x7f00000000c0))

program crashed: KASAN: use-after-free Write in enqueue_timer
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-ioctl$TCFLSH-syz_init_net_socket$bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)

program did not crash
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-ioctl$TCFLSH-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
ioctl$sock_bt_hci(0xffffffffffffffff, 0x400448dd, &(0x7f00000000c0))

program did not crash
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-mmap-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r1, 0x0)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r2, 0x400448dd, &(0x7f00000000c0))

program did not crash
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-write$FUSE_NOTIFY_STORE-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
r1 = memfd_create(0x0, 0x0)
write$FUSE_NOTIFY_STORE(r1, 0x0, 0xe)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r2, 0x400448dd, &(0x7f00000000c0))

program crashed: KASAN: use-after-free Write in enqueue_timer
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
memfd_create(0x0, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r1 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r1, 0x400448dd, &(0x7f00000000c0))

program crashed: KASAN: use-after-free Write in enqueue_timer
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r1 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r1, 0x400448dd, &(0x7f00000000c0))

program did not crash
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
memfd_create(0x0, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r1 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r1, 0x400448dd, &(0x7f00000000c0))

program did not crash
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
ioctl$TIOCSETD(0xffffffffffffffff, 0x5423, &(0x7f0000000080)=0xf)
memfd_create(0x0, 0x0)
ioctl$TCFLSH(0xffffffffffffffff, 0x400455c8, 0x1000000000)
r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r0, 0x400448dd, &(0x7f00000000c0))

program did not crash
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, 0x0, 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
memfd_create(0x0, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r1 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r1, 0x400448dd, &(0x7f00000000c0))

program did not crash
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, 0x0)
memfd_create(0x0, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r1 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r1, 0x400448dd, &(0x7f00000000c0))

program did not crash
testing program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
memfd_create(0x0, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r1 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r1, 0x400448dd, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.224189872s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
program crashed: KASAN: use-after-free Write in enqueue_timer
simplifying C reproducer
testing compiled C program (duration=45.224189872s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
program crashed: KASAN: use-after-free Write in __run_timers
testing compiled C program (duration=45.224189872s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
program did not crash
testing compiled C program (duration=45.224189872s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
program did not crash
testing compiled C program (duration=45.224189872s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
program crashed: KASAN: use-after-free Write in enqueue_timer
testing compiled C program (duration=45.224189872s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
program crashed: KASAN: use-after-free Write in __run_timers
testing compiled C program (duration=45.224189872s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
program did not crash
testing compiled C program (duration=45.224189872s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
program crashed: KASAN: use-after-free Write in __run_timers
testing program (duration=45.224189872s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
memfd_create(0x0, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r1 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r1, 0x400448dd, &(0x7f00000000c0))

program crashed: KASAN: use-after-free Write in enqueue_timer
validation run: crashed=true
testing program (duration=45.224189872s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
memfd_create(0x0, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r1 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r1, 0x400448dd, &(0x7f00000000c0))

program crashed: KASAN: use-after-free Write in __run_timers
validation run: crashed=true
testing program (duration=45.224189872s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ptmx-ioctl$TIOCSETD-memfd_create-ioctl$TCFLSH-syz_init_net_socket$bt_hci-ioctl$sock_bt_hci
detailed listing:
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100), 0x382, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000080)=0xf)
memfd_create(0x0, 0x0)
ioctl$TCFLSH(r0, 0x400455c8, 0x1000000000)
r1 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
ioctl$sock_bt_hci(r1, 0x400448dd, &(0x7f00000000c0))

program crashed: KASAN: use-after-free Write in enqueue_timer
validation run: crashed=true
reproducing took 26m47.003626328s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in hlist_add_head include/linux/list.h:930 [inline]
BUG: KASAN: use-after-free in enqueue_timer+0xae/0x480 kernel/time/timer.c:611
Write of size 8 at addr ffff88811a5cca00 by task kworker/1:1/39

CPU: 1 PID: 39 Comm: kworker/1:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report_generic.c:356
 hlist_add_head include/linux/list.h:930 [inline]
 enqueue_timer+0xae/0x480 kernel/time/timer.c:611
 internal_add_timer kernel/time/timer.c:640 [inline]
 __mod_timer+0x84c/0xc00 kernel/time/timer.c:1137
 mod_timer+0x1f/0x30 kernel/time/timer.c:1196
 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline]
 wg_timers_any_authenticated_packet_traversal+0x133/0x1a0 drivers/net/wireguard/timers.c:215
 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline]
 wg_packet_tx_worker+0x15e/0x4e0 drivers/net/wireguard/send.c:276
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11e0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Allocated by task 412:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc+0xb1/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 hci_alloc_dev_priv+0x27/0x1bd0 net/bluetooth/hci_core.c:2433
 hci_alloc_dev include/net/bluetooth/hci_core.h:1505 [inline]
 hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:641 [inline]
 hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:719 [inline]
 hci_uart_tty_ioctl+0x3c8/0xa20 drivers/bluetooth/hci_ldisc.c:774
 tty_ioctl+0x8ef/0xc60 drivers/tty/tty_io.c:2785
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 417:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 hci_release_dev+0x12a3/0x13b0 net/bluetooth/hci_core.c:2761
 bt_host_release+0x82/0x90 net/bluetooth/hci_sysfs.c:85
 device_release+0xa4/0x1d0 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:681 [inline]
 kobject_release lib/kobject.c:712 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x19d/0x280 lib/kobject.c:729
 put_device+0x1f/0x30 drivers/base/core.c:3806
 hci_dev_put include/net/bluetooth/hci_core.h:1465 [inline]
 hci_dev_cmd+0x279/0x740 net/bluetooth/hci_core.c:795
 hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
 sock_do_ioctl+0x114/0x330 net/socket.c:1191
 sock_ioctl+0x4bd/0x710 net/socket.c:1310
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 insert_work+0x51/0x300 kernel/workqueue.c:1368
 __queue_work+0x9b1/0xd30 kernel/workqueue.c:1527
 queue_work_on+0xde/0x150 kernel/workqueue.c:1555
 queue_work include/linux/workqueue.h:510 [inline]
 hci_cmd_sync_run net/bluetooth/hci_sync.c:140 [inline]
 __hci_cmd_sync_sk+0xa7f/0xd30 net/bluetooth/hci_sync.c:162
 __hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:253 [inline]
 __hci_cmd_sync_status net/bluetooth/hci_sync.c:277 [inline]
 hci_cmd_sync_status+0x53/0x120 net/bluetooth/hci_sync.c:288
 hci_dev_cmd+0x35b/0x740 net/bluetooth/hci_core.c:749
 hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
 sock_do_ioctl+0x114/0x330 net/socket.c:1191
 sock_ioctl+0x4bd/0x710 net/socket.c:1310
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Second to last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 insert_work+0x51/0x300 kernel/workqueue.c:1368
 __queue_work+0x9b1/0xd30 kernel/workqueue.c:1527
 queue_work_on+0xde/0x150 kernel/workqueue.c:1555
 queue_work include/linux/workqueue.h:510 [inline]
 hci_cmd_sync_run net/bluetooth/hci_sync.c:140 [inline]
 __hci_cmd_sync_sk+0xa7f/0xd30 net/bluetooth/hci_sync.c:162
 __hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:253 [inline]
 __hci_cmd_sync_status net/bluetooth/hci_sync.c:277 [inline]
 hci_cmd_sync_status+0x53/0x120 net/bluetooth/hci_sync.c:288
 hci_dev_cmd+0x35b/0x740 net/bluetooth/hci_core.c:749
 hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
 sock_do_ioctl+0x114/0x330 net/socket.c:1191
 sock_ioctl+0x4bd/0x710 net/socket.c:1310
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88811a5cc000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2560 bytes inside of
 8192-byte region [ffff88811a5cc000, ffff88811a5ce000)

The buggy address belongs to the physical page:
page:ffffea0004697200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11a5c8
head:ffffea0004697200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100043500
raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 409, tgid 409 (syz.2.24), ts 31496382705, free_ts 31417534068
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
 get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4585
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5926
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3d0 mm/slub.c:2020
 ___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc+0xa1/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 hci_alloc_dev_priv+0x27/0x1bd0 net/bluetooth/hci_core.c:2433
 hci_alloc_dev include/net/bluetooth/hci_core.h:1505 [inline]
 hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:641 [inline]
 hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:719 [inline]
 hci_uart_tty_ioctl+0x3c8/0xa20 drivers/bluetooth/hci_ldisc.c:774
 tty_ioctl+0x8ef/0xc60 drivers/tty/tty_io.c:2785
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1580 [inline]
 free_pcp_prepare mm/page_alloc.c:1654 [inline]
 free_unref_page_prepare+0x7f8/0x800 mm/page_alloc.c:3620
 free_unref_page+0x95/0x540 mm/page_alloc.c:3718
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6016
 __free_slab+0xca/0x1a0 mm/slub.c:2044
 free_slab mm/slub.c:2059 [inline]
 discard_slab mm/slub.c:2065 [inline]
 __unfreeze_partials+0x160/0x190 mm/slub.c:2614
 put_cpu_partial+0xa9/0x100 mm/slub.c:2690
 __slab_free+0x1c4/0x280 mm/slub.c:3589
 do_slab_free mm/slub.c:3666 [inline]
 ___cache_free+0xbf/0xd0 mm/slub.c:3722
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0xc6/0x140 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x24/0x80 mm/kasan/common.c:311
 kasan_slab_alloc include/linux/kasan.h:202 [inline]
 slab_post_alloc_hook+0x4f/0x2d0 mm/slab.h:768
 slab_alloc_node mm/slub.c:3382 [inline]
 slab_alloc mm/slub.c:3392 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3399 [inline]
 kmem_cache_alloc+0x16e/0x330 mm/slub.c:3408
 kmem_cache_zalloc include/linux/slab.h:689 [inline]
 alloc_buffer_head+0x26/0x120 fs/buffer.c:2951
 jbd2_journal_write_metadata_buffer+0xd5/0xc00 fs/jbd2/journal.c:361
 jbd2_journal_commit_transaction+0x1539/0x5490 fs/jbd2/commit.c:698

Memory state around the buggy address:
 ffff88811a5cc900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811a5cc980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88811a5cca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88811a5cca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811a5ccb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in hlist_add_head include/linux/list.h:930 [inline]
BUG: KASAN: use-after-free in enqueue_timer+0xae/0x480 kernel/time/timer.c:611
Write of size 8 at addr ffff88811a5cca00 by task kworker/1:1/39

CPU: 1 PID: 39 Comm: kworker/1:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: wg-crypt-wg0 wg_packet_tx_worker
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report_generic.c:356
 hlist_add_head include/linux/list.h:930 [inline]
 enqueue_timer+0xae/0x480 kernel/time/timer.c:611
 internal_add_timer kernel/time/timer.c:640 [inline]
 __mod_timer+0x84c/0xc00 kernel/time/timer.c:1137
 mod_timer+0x1f/0x30 kernel/time/timer.c:1196
 mod_peer_timer drivers/net/wireguard/timers.c:37 [inline]
 wg_timers_any_authenticated_packet_traversal+0x133/0x1a0 drivers/net/wireguard/timers.c:215
 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline]
 wg_packet_tx_worker+0x15e/0x4e0 drivers/net/wireguard/send.c:276
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11e0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Allocated by task 412:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc+0xb1/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 hci_alloc_dev_priv+0x27/0x1bd0 net/bluetooth/hci_core.c:2433
 hci_alloc_dev include/net/bluetooth/hci_core.h:1505 [inline]
 hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:641 [inline]
 hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:719 [inline]
 hci_uart_tty_ioctl+0x3c8/0xa20 drivers/bluetooth/hci_ldisc.c:774
 tty_ioctl+0x8ef/0xc60 drivers/tty/tty_io.c:2785
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 417:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 hci_release_dev+0x12a3/0x13b0 net/bluetooth/hci_core.c:2761
 bt_host_release+0x82/0x90 net/bluetooth/hci_sysfs.c:85
 device_release+0xa4/0x1d0 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:681 [inline]
 kobject_release lib/kobject.c:712 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x19d/0x280 lib/kobject.c:729
 put_device+0x1f/0x30 drivers/base/core.c:3806
 hci_dev_put include/net/bluetooth/hci_core.h:1465 [inline]
 hci_dev_cmd+0x279/0x740 net/bluetooth/hci_core.c:795
 hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
 sock_do_ioctl+0x114/0x330 net/socket.c:1191
 sock_ioctl+0x4bd/0x710 net/socket.c:1310
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 insert_work+0x51/0x300 kernel/workqueue.c:1368
 __queue_work+0x9b1/0xd30 kernel/workqueue.c:1527
 queue_work_on+0xde/0x150 kernel/workqueue.c:1555
 queue_work include/linux/workqueue.h:510 [inline]
 hci_cmd_sync_run net/bluetooth/hci_sync.c:140 [inline]
 __hci_cmd_sync_sk+0xa7f/0xd30 net/bluetooth/hci_sync.c:162
 __hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:253 [inline]
 __hci_cmd_sync_status net/bluetooth/hci_sync.c:277 [inline]
 hci_cmd_sync_status+0x53/0x120 net/bluetooth/hci_sync.c:288
 hci_dev_cmd+0x35b/0x740 net/bluetooth/hci_core.c:749
 hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
 sock_do_ioctl+0x114/0x330 net/socket.c:1191
 sock_ioctl+0x4bd/0x710 net/socket.c:1310
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Second to last potentially related work creation:
 kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 insert_work+0x51/0x300 kernel/workqueue.c:1368
 __queue_work+0x9b1/0xd30 kernel/workqueue.c:1527
 queue_work_on+0xde/0x150 kernel/workqueue.c:1555
 queue_work include/linux/workqueue.h:510 [inline]
 hci_cmd_sync_run net/bluetooth/hci_sync.c:140 [inline]
 __hci_cmd_sync_sk+0xa7f/0xd30 net/bluetooth/hci_sync.c:162
 __hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:253 [inline]
 __hci_cmd_sync_status net/bluetooth/hci_sync.c:277 [inline]
 hci_cmd_sync_status+0x53/0x120 net/bluetooth/hci_sync.c:288
 hci_dev_cmd+0x35b/0x740 net/bluetooth/hci_core.c:749
 hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
 sock_do_ioctl+0x114/0x330 net/socket.c:1191
 sock_ioctl+0x4bd/0x710 net/socket.c:1310
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88811a5cc000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2560 bytes inside of
 8192-byte region [ffff88811a5cc000, ffff88811a5ce000)

The buggy address belongs to the physical page:
page:ffffea0004697200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11a5c8
head:ffffea0004697200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100043500
raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 409, tgid 409 (syz.2.24), ts 31496382705, free_ts 31417534068
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
 get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4585
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5926
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3d0 mm/slub.c:2020
 ___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc+0xa1/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 hci_alloc_dev_priv+0x27/0x1bd0 net/bluetooth/hci_core.c:2433
 hci_alloc_dev include/net/bluetooth/hci_core.h:1505 [inline]
 hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:641 [inline]
 hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:719 [inline]
 hci_uart_tty_ioctl+0x3c8/0xa20 drivers/bluetooth/hci_ldisc.c:774
 tty_ioctl+0x8ef/0xc60 drivers/tty/tty_io.c:2785
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1580 [inline]
 free_pcp_prepare mm/page_alloc.c:1654 [inline]
 free_unref_page_prepare+0x7f8/0x800 mm/page_alloc.c:3620
 free_unref_page+0x95/0x540 mm/page_alloc.c:3718
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6016
 __free_slab+0xca/0x1a0 mm/slub.c:2044
 free_slab mm/slub.c:2059 [inline]
 discard_slab mm/slub.c:2065 [inline]
 __unfreeze_partials+0x160/0x190 mm/slub.c:2614
 put_cpu_partial+0xa9/0x100 mm/slub.c:2690
 __slab_free+0x1c4/0x280 mm/slub.c:3589
 do_slab_free mm/slub.c:3666 [inline]
 ___cache_free+0xbf/0xd0 mm/slub.c:3722
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0xc6/0x140 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x24/0x80 mm/kasan/common.c:311
 kasan_slab_alloc include/linux/kasan.h:202 [inline]
 slab_post_alloc_hook+0x4f/0x2d0 mm/slab.h:768
 slab_alloc_node mm/slub.c:3382 [inline]
 slab_alloc mm/slub.c:3392 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3399 [inline]
 kmem_cache_alloc+0x16e/0x330 mm/slub.c:3408
 kmem_cache_zalloc include/linux/slab.h:689 [inline]
 alloc_buffer_head+0x26/0x120 fs/buffer.c:2951
 jbd2_journal_write_metadata_buffer+0xd5/0xc00 fs/jbd2/journal.c:361
 jbd2_journal_commit_transaction+0x1539/0x5490 fs/jbd2/commit.c:698

Memory state around the buggy address:
 ffff88811a5cc900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811a5cc980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88811a5cca00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88811a5cca80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811a5ccb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================