Extracting prog: 4m55.813167867s
Minimizing prog: 20m52.824443838s
Simplifying prog options: 0s
Extracting C: 38.747799919s
Simplifying C: 10m36.239760553s


extracting reproducer from 24 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program did not crash
single: failed to extract reproducer
bisect: bisecting 24 programs with base timeout 30s
testing program (duration=36s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3]
detailed listing:
executing program 1:
r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nfc(&(0x7f0000000100), r0)
sendmsg$NFC_CMD_DEV_UP(r0, &(0x7f0000000540)={0x0, 0x0, &(0x7f0000000280)={&(0x7f00000004c0)={0x14, r1, 0x1, 0x70bd28, 0x25dfdbfe}, 0x14}, 0x1, 0x0, 0x0, 0x4040}, 0x8000)
executing program 1:
r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$NFT_BATCH(r0, &(0x7f000000c2c0)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000008c0)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a28000000000a0101000000005e1affd5020000000900010073797a300000000008000240000000032c000000030a01030000e6ff00000000020000000900010073797a30000000000900030073797a320000000014000000110001"], 0x7c}}, 0x0)
sendmsg$NFT_BATCH(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000a00)={{0x14, 0x10, 0x1, 0x0, 0x0, {0x2}}, [@NFT_MSG_NEWRULE={0x50, 0x6, 0xa, 0x40b, 0x0, 0x0, {0x2}, [@NFTA_RULE_EXPRESSIONS={0x24, 0x4, 0x0, 0x1, [{0x20, 0x1, 0x0, 0x1, @target={{0xb}, @val={0x10, 0x2, 0x0, 0x1, [@NFTA_TARGET_NAME={0xb, 0x1, 'TPROXY\x00'}]}}}]}, @NFTA_RULE_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_RULE_CHAIN={0x9, 0x2, 'syz2\x00'}]}], {0x14}}, 0x78}}, 0x10)
executing program 1:
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x2)
r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000180)='/proc/zoneinfo\x00', 0x0, 0x0)
listen(r0, 0x0)
executing program 1:
r0 = syz_open_procfs(0x0, &(0x7f0000000140)='map_files\x00')
lseek(r0, 0x1, 0x0)
getdents64(r0, 0xffffffffffffffff, 0x43)
executing program 1:
r0 = syz_usb_connect(0x0, 0x202, &(0x7f0000000180)=ANY=[@ANYBLOB="1201100152018b401e040740185d000000010902f00101040000030904"], 0x0)
syz_usb_control_io$hid(r0, 0x0, &(0x7f0000000040)={0x2c, &(0x7f0000000000)={0x40, 0xc, 0x35, 'Vx'}, 0x0, 0x0, 0x0, 0x0})
syz_usb_control_io$cdc_ncm(r0, &(0x7f0000000080)={0x14, &(0x7f00000001c0)=ANY=[], 0x0}, 0x0)
executing program 3:
r0 = syz_init_net_socket$netrom(0x6, 0x5, 0x0)
connect$netrom(r0, &(0x7f0000000300)={{0x6, @rose, 0x1}, [@rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @netrom={0xbb, 0xbb, 0xbb, 0xbb, 0xbb, 0x0, 0x0}, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}, @default, @remote={0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0x1}, @bcast]}, 0x48)
bind$netrom(r0, 0x0, 0x0)
executing program 3:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
pipe2(&(0x7f0000000000)={<r0=>0xffffffffffffffff}, 0x0)
readv(r0, &(0x7f0000000080)=[{&(0x7f00000003c0)=""/210, 0xd2}], 0x1)
executing program 3:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000240), 0x28801, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x1)
ioctl$KVM_SET_USER_MEMORY_REGION2(r1, 0x40a0ae49, &(0x7f0000000340)={0x1ff, 0x4, 0x80a0000, 0x2000, &(0x7f000060b000/0x2000)=nil, 0x8000})
executing program 3:
syz_usb_connect$cdc_ncm(0x4, 0xd1, &(0x7f0000000040)=ANY=[@ANYBLOB="12011003020000182505a1a44000010203010902bf0002010650000900000000020d00000524060001082400a9b30d240f010a0000000300ff000606241a05001407240a050905580c240c00000000a90c09000304240202042402000424060244"], 0x0)
syz_usb_connect(0x6, 0x36, &(0x7f00000000c0)={{0x12, 0x1, 0x201, 0xe4, 0x75, 0xb9, 0x8, 0x413c, 0x81b1, 0x776c, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x80, 0x3, 0x60}}]}}, &(0x7f0000000c40)={0x0, 0x0, 0x0, 0x0})
syz_usb_connect(0x3, 0xf5, &(0x7f0000000000)=ANY=[@ANYBLOB="12010000772aed408680070bb96c010203010902e30003dc2000000904003f000e01000505a40600010524007f000d240f0104000000080000000006241a03000a05240101070424020a1524120009a317a88b045e4f01a607c0ffcb7e392a09044c03003a92a2010a240109000102010205240401050c2402"], 0x0)
executing program 2:
r0 = openat$ttyS3(0xffffffffffffff9c, &(0x7f00000006c0), 0x48200, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000100)=0x2)
ioctl$TIOCVHANGUP(r0, 0x5437, 0x200000000000000)
executing program 2:
r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000040)='comm\x00')
exit(0x1ff)
write$UHID_INPUT(r0, 0x0, 0x0)
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
r0 = epoll_create1(0x80000)
epoll_pwait2(r0, &(0x7f0000000080)=[{}], 0x1, 0x0, 0x0, 0x0)
executing program 0:
r0 = syz_clone(0xa04000, &(0x7f0000001280), 0x0, 0x0, 0x0, 0x0)
r1 = syz_pidfd_open(r0, 0x0)
ioctl$int_out(r1, 0x5460, 0x0)
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000140), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_SET_PIT2(r1, 0x4038ae7a, 0x0)
executing program 0:
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0xa7e, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f0000000040)={0x8, 0x1, 0x1})
ioctl$vim2m_VIDIOC_STREAMOFF(r0, 0x40045612, &(0x7f0000000000)=0x1)
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_IOEVENTFD(r1, 0x4040ae79, &(0x7f0000000040)={0x27800000000, 0x70000, 0x0, 0xffffffffffffffff, 0x20})
executing program 2:
sendmsg$kcm(0xffffffffffffffff, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000480)=[{&(0x7f0000000000)="1400000010003507d25a806f8c6394f90324fc", 0x13}], 0x1}, 0x40810)
r0 = socket$kcm(0x10, 0x2, 0x0)
write$cgroup_subtree(r0, &(0x7f0000000000)=ANY=[@ANYBLOB="1c0000004800913a745c7388641f9c0e0a"], 0xfe33)
executing program 0:
r0 = syz_usb_connect(0x0, 0x36, &(0x7f0000000240)=ANY=[@ANYBLOB="12010000772904202404019957c2010203010902240001000010000904430002317d5500090502020002020000090582020002"], 0x0)
syz_usb_control_io$uac1(r0, 0x0, 0x0)
syz_usb_control_io$rtl8150(r0, 0x0, &(0x7f0000000340)={0x2c, &(0x7f00000001c0)={0x0, 0xb, 0x4, "b29d74ae"}, 0x0, 0x0, 0x0, 0x0})
executing program 2:
r0 = socket$inet6_sctp(0xa, 0x5, 0x84)
mmap(&(0x7f0000001000/0xc00000)=nil, 0xc00000, 0x3000004, 0x3032, 0xffffffffffffffff, 0x0)
getsockopt$bt_hci(r0, 0x84, 0xd, &(0x7f0000003140)=""/4111, &(0x7f0000000080)=0x100f)
executing program 2:
r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$GTP_CMD_NEWPDP(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000100)=ANY=[@ANYBLOB='$\x00\x00\x00', @ANYRES16, @ANYBLOB="010000000000000000000000000008000100", @ANYRES32=0x0, @ANYBLOB='\b\x00'], 0x24}}, 0x0)
sendmsg$NFT_BATCH(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000040)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a01020000000000000000010000000900010073797a300000000058000000160a01000000000000000000010000000900010073797a30000000000900020073797a32000000002c0003800800014000000000180003801400010076657468315f00005f626f6e64000000080002400000000064000000160a0101000b000000000000010000000900020073797a32000000000900010073797a3000000000300003802c00038014000100"], 0x104}}, 0x0)
executing program 3:
r0 = syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
ptrace(0x10, r0)
ptrace$getregset(0x4205, r0, 0x1, &(0x7f0000000080)={0x0})
executing program 2:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)
executing program 1:
r0 = syz_usb_connect(0x0, 0x24, &(0x7f0000000040)=ANY=[@ANYBLOB="120100002eab5a40401c3405cc6d010203010902120001000000000904"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$cdc_ecm(r0, 0x0, &(0x7f00000004c0)={0x1c, &(0x7f0000000400)={0x40, 0x12, 0x4, "dd3e97d5"}, 0x0, 0x0})
executing program 3:
r0 = socket$alg(0x26, 0x5, 0x0)
bind$alg(r0, &(0x7f00000004c0)={0x26, 'skcipher\x00', 0x0, 0x0, 'cbc(twofish)\x00'}, 0x4f)
setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000000)="4ef983ac5fa8701627c7dc40ea0d209956", 0x11)

program did not crash
replaying the whole log did not cause a kernel crash
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program crashed: KASAN: use-after-free Write in fuse_copy_do
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(0xffffffffffffffff, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, 0x0, 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, 0x0, &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', 0x0, 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, 0x0)
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
program crashed: KASAN: use-after-free Write in fuse_copy_do
simplifying C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
program crashed: KASAN: use-after-free Write in fuse_copy_do
testing compiled C program (duration=1m40s, {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}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
program crashed: KASAN: use-after-free Write in fuse_copy_do
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
program crashed: KASAN: use-after-free Write in fuse_copy_do
testing compiled C program (duration=1m40s, {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:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
program crashed: KASAN: use-after-free Write in fuse_copy_do
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
program crashed: KASAN: use-after-free Write in fuse_copy_do
testing compiled C program (duration=1m40s, {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:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
program crashed: KASAN: use-after-free Write in fuse_copy_do
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
program crashed: KASAN: use-after-free Write in fuse_copy_do
testing program (duration=1m40s, {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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program crashed: KASAN: use-after-free Write in fuse_copy_do
validation run: crashed=true
testing program (duration=1m40s, {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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program crashed: KASAN: use-after-free Write in fuse_copy_do
validation run: crashed=true
testing program (duration=1m40s, {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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fuse-mount$fuse-write$FUSE_NOTIFY_STORE
detailed listing:
executing program 0:
r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000140), 0x2, 0x0)
mount$fuse(0x0, &(0x7f0000002880)='.\x00', &(0x7f00000028c0), 0x4001, &(0x7f00000000c0)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}})
write$FUSE_NOTIFY_STORE(r0, &(0x7f0000000080)={0x2a, 0x4, 0x0, {0x1, 0x7fff, 0x2, 0x0, [0x0, 0x0]}}, 0x2a)

program crashed: KASAN: use-after-free Write in fuse_copy_do
validation run: crashed=true
reproducing took 41m1.408312857s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in fuse_copy_do+0x193/0x380 fs/fuse/dev.c:-1
Write of size 2 at addr ffff88806a123fff by task syz.0.17/5980

CPU: 1 UID: 0 PID: 5980 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xba/0x230 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200
 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106
 fuse_copy_do+0x193/0x380 fs/fuse/dev.c:-1
 fuse_copy_folio+0xefc/0x1b00 fs/fuse/dev.c:1166
 fuse_notify_store fs/fuse/dev.c:1821 [inline]
 fuse_notify fs/fuse/dev.c:2109 [inline]
 fuse_dev_do_write+0x2b9d/0x4060 fs/fuse/dev.c:2205
 fuse_dev_write+0x177/0x220 fs/fuse/dev.c:2289
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61d/0xb90 fs/read_write.c:688
 ksys_write+0x150/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff8bdd9c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff821a8718 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff8be015fa0 RCX: 00007ff8bdd9c799
RDX: 000000000000002a RSI: 0000200000000080 RDI: 0000000000000003
RBP: 00007ff8bde32bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff8be015fac R14: 00007ff8be015fa0 R15: 00007ff8be015fa0
 </TASK>

The buggy address belongs to the physical page:
page: refcount:3 mapcount:0 mapping:ffff88805da5cf20 index:0x7 pfn:0x6a123
memcg:ffff88802caa0500
aops:empty_aops ino:1 dentry name(?):"/"
flags: 0xfff00000000005(locked|referenced|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000005 0000000000000000 dead000000000122 ffff88805da5cf20
raw: 0000000000000007 0000000000000000 00000003ffffffff ffff88802caa0500
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 5980, tgid 5980 (syz.0.17), ts 103759922508, free_ts 103739528314
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x231/0x280 mm/page_alloc.c:1892
 prep_new_page mm/page_alloc.c:1900 [inline]
 get_page_from_freelist+0x23a1/0x2440 mm/page_alloc.c:3965
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5253
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2484
 alloc_frozen_pages_noprof mm/mempolicy.c:2555 [inline]
 alloc_pages_noprof+0xa8/0x190 mm/mempolicy.c:2575
 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2585
 filemap_alloc_folio_noprof+0x111/0x470 mm/filemap.c:1013
 __filemap_get_folio_mpol+0x3fc/0xb00 mm/filemap.c:2011
 __filemap_get_folio include/linux/pagemap.h:774 [inline]
 filemap_grab_folio include/linux/pagemap.h:854 [inline]
 fuse_notify_store fs/fuse/dev.c:1813 [inline]
 fuse_notify fs/fuse/dev.c:2109 [inline]
 fuse_dev_do_write+0x298b/0x4060 fs/fuse/dev.c:2205
 fuse_dev_write+0x177/0x220 fs/fuse/dev.c:2289
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61d/0xb90 fs/read_write.c:688
 ksys_write+0x150/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5934 tgid 5934 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1436 [inline]
 free_unref_folios+0xd71/0x1530 mm/page_alloc.c:3043
 folios_put_refs+0x9ff/0xb40 mm/swap.c:1008
 folios_put include/linux/mm.h:1876 [inline]
 folio_batch_move_lru+0x4c2/0x550 mm/swap.c:179
 __folio_batch_add_and_move+0x510/0xc50 mm/swap.c:196
 wp_page_copy mm/memory.c:3829 [inline]
 do_wp_page+0x40d4/0x5930 mm/memory.c:4222
 handle_pte_fault mm/memory.c:6314 [inline]
 __handle_mm_fault mm/memory.c:6436 [inline]
 handle_mm_fault+0x1520/0x3310 mm/memory.c:6605
 do_user_addr_fault+0xa73/0x1340 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618

Memory state around the buggy address:
 ffff88806a123f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88806a123f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88806a124000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88806a124080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88806a124100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in fuse_copy_do+0x193/0x380 fs/fuse/dev.c:-1
Write of size 2 at addr ffff88806a123fff by task syz.0.17/5980

CPU: 1 UID: 0 PID: 5980 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xba/0x230 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200
 __asan_memcpy+0x40/0x70 mm/kasan/shadow.c:106
 fuse_copy_do+0x193/0x380 fs/fuse/dev.c:-1
 fuse_copy_folio+0xefc/0x1b00 fs/fuse/dev.c:1166
 fuse_notify_store fs/fuse/dev.c:1821 [inline]
 fuse_notify fs/fuse/dev.c:2109 [inline]
 fuse_dev_do_write+0x2b9d/0x4060 fs/fuse/dev.c:2205
 fuse_dev_write+0x177/0x220 fs/fuse/dev.c:2289
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61d/0xb90 fs/read_write.c:688
 ksys_write+0x150/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff8bdd9c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff821a8718 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff8be015fa0 RCX: 00007ff8bdd9c799
RDX: 000000000000002a RSI: 0000200000000080 RDI: 0000000000000003
RBP: 00007ff8bde32bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff8be015fac R14: 00007ff8be015fa0 R15: 00007ff8be015fa0
 </TASK>

The buggy address belongs to the physical page:
page: refcount:3 mapcount:0 mapping:ffff88805da5cf20 index:0x7 pfn:0x6a123
memcg:ffff88802caa0500
aops:empty_aops ino:1 dentry name(?):"/"
flags: 0xfff00000000005(locked|referenced|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000005 0000000000000000 dead000000000122 ffff88805da5cf20
raw: 0000000000000007 0000000000000000 00000003ffffffff ffff88802caa0500
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 5980, tgid 5980 (syz.0.17), ts 103759922508, free_ts 103739528314
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x231/0x280 mm/page_alloc.c:1892
 prep_new_page mm/page_alloc.c:1900 [inline]
 get_page_from_freelist+0x23a1/0x2440 mm/page_alloc.c:3965
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5253
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2484
 alloc_frozen_pages_noprof mm/mempolicy.c:2555 [inline]
 alloc_pages_noprof+0xa8/0x190 mm/mempolicy.c:2575
 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2585
 filemap_alloc_folio_noprof+0x111/0x470 mm/filemap.c:1013
 __filemap_get_folio_mpol+0x3fc/0xb00 mm/filemap.c:2011
 __filemap_get_folio include/linux/pagemap.h:774 [inline]
 filemap_grab_folio include/linux/pagemap.h:854 [inline]
 fuse_notify_store fs/fuse/dev.c:1813 [inline]
 fuse_notify fs/fuse/dev.c:2109 [inline]
 fuse_dev_do_write+0x298b/0x4060 fs/fuse/dev.c:2205
 fuse_dev_write+0x177/0x220 fs/fuse/dev.c:2289
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61d/0xb90 fs/read_write.c:688
 ksys_write+0x150/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5934 tgid 5934 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1436 [inline]
 free_unref_folios+0xd71/0x1530 mm/page_alloc.c:3043
 folios_put_refs+0x9ff/0xb40 mm/swap.c:1008
 folios_put include/linux/mm.h:1876 [inline]
 folio_batch_move_lru+0x4c2/0x550 mm/swap.c:179
 __folio_batch_add_and_move+0x510/0xc50 mm/swap.c:196
 wp_page_copy mm/memory.c:3829 [inline]
 do_wp_page+0x40d4/0x5930 mm/memory.c:4222
 handle_pte_fault mm/memory.c:6314 [inline]
 __handle_mm_fault mm/memory.c:6436 [inline]
 handle_mm_fault+0x1520/0x3310 mm/memory.c:6605
 do_user_addr_fault+0xa73/0x1340 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618

Memory state around the buggy address:
 ffff88806a123f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88806a123f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88806a124000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88806a124080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88806a124100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================