Extracting prog: 6m20.959930804s
Minimizing prog: 1h12m3.122480171s
Simplifying prog options: 12m31.495497925s
Extracting C: 5m16.800000935s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$eJzs3d9rW+UbAPDnpO1+f7/rYAwVkcIunMyla+uPCV7MS9HhQO9naM/KaLqMJh1rHbhduBtvZAgiDsR7vfdy+A/4Vwx0MHQUvfCmctKTLmuTJttiUs3nA6e87zknfc+bc543z5uTkACG1kT2pxDxfER8kUQcjogk3zYa+caJjf3WHl6fzZYk1tc//C2p75fVG/+r8biDeeW5iPjps4iThe3tVldWF0rlcrqU1ydri1cmqyurpy4tlubT+fTy9MzMmddnpt96842e9fWV839+/cHdd898fnztqx/uH7mdxNk4lG9r7sczuNFcmYiJ/DkZi7NbdpzqQWO7STLoA+CpjORxPhbZGHA4RvKoB/77Po2IdWBIJeIfhlQjD2jM7XeeB/+/T1lJ/zx4Z2MCtL3/oxvvjcS++tzowFry2Mwom++O96D9rI0ff71zO1uid+9DAHR042ZEnB4d3T7+Jfn4t4MOb/qdbr16X3NlaxvGP+ifu1n+82qr/KdQj83f83Ddmv8cbBG7T6Nz/Bfu96CZtrL87+2W+e/mTavxkbz2v3rON5ZcvFROT+fZ8IkY25vVd7qfc2bt3nq7bc35X7Zk7Tdywfw47o/uffwxc6Va6Vn63OzBzYgXWua/yWb+m7Q4/9nzcb7LNo6ld15qt61z//9Z699FvNzy/D96cUt2vj85Wb8eJhtXxXZ/3Dr2c7v2B93/7Pwf2Ln/40nz/drqk7fx7b6/0nbbHut/dH/970k+qpf35OuulWq1pamIPcn729dPP3pso97YP+v/iePtx7921//+iPi4y/7fOvr9i131f0Dnf+6Jzv+TF+6998k37drvbvx7rV46ka/pZvzr9gCf5bkDAAAAAACA3aYQEYciKRQ3y4VCsbjx+Y6jcaBQrlRrJy9Wli/PRf27suMxVmjc6T7c9HmIqfzzsI369Jb6TEQciYgvR/bX68XZSnlu0J0HAAAAAAAAAAAAAAAAAACAXeJg/Tv/I5v1xvf/M7+MDO64gD7xk98wvDrGfy9+6QnYlbz+w/AS/zC8xD8ML/EPw0v8w/AS/zC8uoj/Qj+OA+g/r/8AAAAAAAAAAAAAAAAAAAAAAAAAAADQU+fPncuW9bWH12ez+tzVleWFytVTc2l1obi4PFucrSxdKc5XKvPltDhbWez0/8qVypWp6Vi+NllLq7XJ6srqhcXK8uXahUuLpfn0QjrWl14BAAAAAAAAAAAAAAAAAADAv0t1ZXWhVC6nSwoKT1UY3R2HodDjwqBHJgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB45O8AAAD//8A2OIo=")
rename(&(0x7f00000000c0)='./file1\x00', 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$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")
rename(&(0x7f00000000c0)='./file1\x00', 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program crashed: KASAN: slab-out-of-bounds Read in ext4_ext_correct_indexes
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$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")
rename(&(0x7f00000000c0)='./file1\x00', 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0xfdef, 0xfecc)

program did not crash
program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$eJzs3d9rW+UbAPDnpO1+f7/rYAwVkcIunMyla+uPCV7MS9HhQO9naM/KaLqMJh1rHbhduBtvZAgiDsR7vfdy+A/4Vwx0MHQUvfCmctKTLmuTJttiUs3nA6e87zknfc+bc543z5uTkACG1kT2pxDxfER8kUQcjogk3zYa+caJjf3WHl6fzZYk1tc//C2p75fVG/+r8biDeeW5iPjps4iThe3tVldWF0rlcrqU1ydri1cmqyurpy4tlubT+fTy9MzMmddnpt96842e9fWV839+/cHdd898fnztqx/uH7mdxNk4lG9r7sczuNFcmYiJ/DkZi7NbdpzqQWO7STLoA+CpjORxPhbZGHA4RvKoB/77Po2IdWBIJeIfhlQjD2jM7XeeB/+/T1lJ/zx4Z2MCtL3/oxvvjcS++tzowFry2Mwom++O96D9rI0ff71zO1uid+9DAHR042ZEnB4d3T7+Jfn4t4MOb/qdbr16X3NlaxvGP+ifu1n+82qr/KdQj83f83Ddmv8cbBG7T6Nz/Bfu96CZtrL87+2W+e/mTavxkbz2v3rON5ZcvFROT+fZ8IkY25vVd7qfc2bt3nq7bc35X7Zk7Tdywfw47o/uffwxc6Va6Vn63OzBzYgXWua/yWb+m7Q4/9nzcb7LNo6ld15qt61z//9Z699FvNzy/D96cUt2vj85Wb8eJhtXxXZ/3Dr2c7v2B93/7Pwf2Ln/40nz/drqk7fx7b6/0nbbHut/dH/970k+qpf35OuulWq1pamIPcn729dPP3pso97YP+v/iePtx7921//+iPi4y/7fOvr9i131f0Dnf+6Jzv+TF+6998k37drvbvx7rV46ka/pZvzr9gCf5bkDAAAAAACA3aYQEYciKRQ3y4VCsbjx+Y6jcaBQrlRrJy9Wli/PRf27suMxVmjc6T7c9HmIqfzzsI369Jb6TEQciYgvR/bX68XZSnlu0J0HAAAAAAAAAAAAAAAAAACAXeJg/Tv/I5v1xvf/M7+MDO64gD7xk98wvDrGfy9+6QnYlbz+w/AS/zC8xD8ML/EPw0v8w/AS/zC8uoj/Qj+OA+g/r/8AAAAAAAAAAAAAAAAAAAAAAAAAAADQU+fPncuW9bWH12ez+tzVleWFytVTc2l1obi4PFucrSxdKc5XKvPltDhbWez0/8qVypWp6Vi+NllLq7XJ6srqhcXK8uXahUuLpfn0QjrWl14BAAAAAAAAAAAAAAAAAADAv0t1ZXWhVC6nSwoKT1UY3R2HodDjwqBHJgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB45O8AAAD//8A2OIo=")
rename(&(0x7f00000000c0)='./file1\x00', 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$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")
rename(&(0x7f00000000c0)='./file1\x00', 0x0)
pwrite64(0xffffffffffffffff, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$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")
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): rename-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
rename(&(0x7f00000000c0)='./file1\x00', 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$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")
rename(0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program crashed: KASAN: use-after-free Read in ext4_ext_correct_indexes
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$eJzs3d9rW+UbAPDnpO1+f7/rYAwVkcIunMyla+uPCV7MS9HhQO9naM/KaLqMJh1rHbhduBtvZAgiDsR7vfdy+A/4Vwx0MHQUvfCmctKTLmuTJttiUs3nA6e87zknfc+bc543z5uTkACG1kT2pxDxfER8kUQcjogk3zYa+caJjf3WHl6fzZYk1tc//C2p75fVG/+r8biDeeW5iPjps4iThe3tVldWF0rlcrqU1ydri1cmqyurpy4tlubT+fTy9MzMmddnpt96842e9fWV839+/cHdd898fnztqx/uH7mdxNk4lG9r7sczuNFcmYiJ/DkZi7NbdpzqQWO7STLoA+CpjORxPhbZGHA4RvKoB/77Po2IdWBIJeIfhlQjD2jM7XeeB/+/T1lJ/zx4Z2MCtL3/oxvvjcS++tzowFry2Mwom++O96D9rI0ff71zO1uid+9DAHR042ZEnB4d3T7+Jfn4t4MOb/qdbr16X3NlaxvGP+ifu1n+82qr/KdQj83f83Ddmv8cbBG7T6Nz/Bfu96CZtrL87+2W+e/mTavxkbz2v3rON5ZcvFROT+fZ8IkY25vVd7qfc2bt3nq7bc35X7Zk7Tdywfw47o/uffwxc6Va6Vn63OzBzYgXWua/yWb+m7Q4/9nzcb7LNo6ld15qt61z//9Z699FvNzy/D96cUt2vj85Wb8eJhtXxXZ/3Dr2c7v2B93/7Pwf2Ln/40nz/drqk7fx7b6/0nbbHut/dH/970k+qpf35OuulWq1pamIPcn729dPP3pso97YP+v/iePtx7921//+iPi4y/7fOvr9i131f0Dnf+6Jzv+TF+6998k37drvbvx7rV46ka/pZvzr9gCf5bkDAAAAAACA3aYQEYciKRQ3y4VCsbjx+Y6jcaBQrlRrJy9Wli/PRf27suMxVmjc6T7c9HmIqfzzsI369Jb6TEQciYgvR/bX68XZSnlu0J0HAAAAAAAAAAAAAAAAAACAXeJg/Tv/I5v1xvf/M7+MDO64gD7xk98wvDrGfy9+6QnYlbz+w/AS/zC8xD8ML/EPw0v8w/AS/zC8uoj/Qj+OA+g/r/8AAAAAAAAAAAAAAAAAAAAAAAAAAADQU+fPncuW9bWH12ez+tzVleWFytVTc2l1obi4PFucrSxdKc5XKvPltDhbWez0/8qVypWp6Vi+NllLq7XJ6srqhcXK8uXahUuLpfn0QjrWl14BAAAAAAAAAAAAAAAAAADAv0t1ZXWhVC6nSwoKT1UY3R2HodDjwqBHJgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB45O8AAAD//8A2OIo=")
rename(0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$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")
rename(0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, 0x0, 0x0, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$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")
rename(0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140), 0x0, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64-syz_mount_image$vfat
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$eJzs3d9rW+UbAPDnpO1+f7/rYAwVkcIunMyla+uPCV7MS9HhQO9naM/KaLqMJh1rHbhduBtvZAgiDsR7vfdy+A/4Vwx0MHQUvfCmctKTLmuTJttiUs3nA6e87zknfc+bc543z5uTkACG1kT2pxDxfER8kUQcjogk3zYa+caJjf3WHl6fzZYk1tc//C2p75fVG/+r8biDeeW5iPjps4iThe3tVldWF0rlcrqU1ydri1cmqyurpy4tlubT+fTy9MzMmddnpt96842e9fWV839+/cHdd898fnztqx/uH7mdxNk4lG9r7sczuNFcmYiJ/DkZi7NbdpzqQWO7STLoA+CpjORxPhbZGHA4RvKoB/77Po2IdWBIJeIfhlQjD2jM7XeeB/+/T1lJ/zx4Z2MCtL3/oxvvjcS++tzowFry2Mwom++O96D9rI0ff71zO1uid+9DAHR042ZEnB4d3T7+Jfn4t4MOb/qdbr16X3NlaxvGP+ifu1n+82qr/KdQj83f83Ddmv8cbBG7T6Nz/Bfu96CZtrL87+2W+e/mTavxkbz2v3rON5ZcvFROT+fZ8IkY25vVd7qfc2bt3nq7bc35X7Zk7Tdywfw47o/uffwxc6Va6Vn63OzBzYgXWua/yWb+m7Q4/9nzcb7LNo6ld15qt61z//9Z699FvNzy/D96cUt2vj85Wb8eJhtXxXZ/3Dr2c7v2B93/7Pwf2Ln/40nz/drqk7fx7b6/0nbbHut/dH/970k+qpf35OuulWq1pamIPcn729dPP3pso97YP+v/iePtx7921//+iPi4y/7fOvr9i131f0Dnf+6Jzv+TF+6998k37drvbvx7rV46ka/pZvzr9gCf5bkDAAAAAACA3aYQEYciKRQ3y4VCsbjx+Y6jcaBQrlRrJy9Wli/PRf27suMxVmjc6T7c9HmIqfzzsI369Jb6TEQciYgvR/bX68XZSnlu0J0HAAAAAAAAAAAAAAAAAACAXeJg/Tv/I5v1xvf/M7+MDO64gD7xk98wvDrGfy9+6QnYlbz+w/AS/zC8xD8ML/EPw0v8w/AS/zC8uoj/Qj+OA+g/r/8AAAAAAAAAAAAAAAAAAAAAAAAAAADQU+fPncuW9bWH12ez+tzVleWFytVTc2l1obi4PFucrSxdKc5XKvPltDhbWez0/8qVypWp6Vi+NllLq7XJ6srqhcXK8uXahUuLpfn0QjrWl14BAAAAAAAAAAAAAAAAAADAv0t1ZXWhVC6nSwoKT1UY3R2HodDjwqBHJgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAB45O8AAAD//8A2OIo=")
rename(0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rename-openat-pwrite64-syz_mount_image$vfat
detailed listing:
executing program 0:
syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file2\x00', 0x3000046, &(0x7f00000000c0)={[{@debug_want_extra_isize={'debug_want_extra_isize', 0x3d, 0x80}}, {@grpjquota}, {@oldalloc}, {@errors_remount}, {@orlov}, {@usrquota}, {@stripe={'stripe', 0x3d, 0x622}}]}, 0x1, 0x56c, &(0x7f0000001a00)="$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")
rename(0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x0)
pwrite64(r0, &(0x7f0000000140)='2', 0xfdef, 0xfecc)
syz_mount_image$vfat(&(0x7f00000006c0), &(0x7f0000000280)='./bus\x00', 0x444, 0x0, 0x1, 0x0, &(0x7f0000000080))

program did not crash
reproducing took 1h36m12.377934421s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in ext4_ext_correct_indexes+0x72/0x5b0 fs/ext4/extents.c:1712
Read of size 8 at addr ffff888028b9fc50 by task syz.4.1185/11617

CPU: 0 UID: 0 PID: 11617 Comm: syz.4.1185 Not tainted 6.16.0-rc1-next-20250611-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0xd2/0x2b0 mm/kasan/report.c:521
 kasan_report+0x118/0x150 mm/kasan/report.c:634
 ext4_ext_correct_indexes+0x72/0x5b0 fs/ext4/extents.c:1712
 ext4_ext_insert_extent+0x1fdd/0x4af0 fs/ext4/extents.c:2188
 ext4_ext_map_blocks+0x1792/0x6ac0 fs/ext4/extents.c:4404
 ext4_map_create_blocks fs/ext4/inode.c:609 [inline]
 ext4_map_blocks+0x931/0x18d0 fs/ext4/inode.c:813
 _ext4_get_block+0x200/0x4c0 fs/ext4/inode.c:892
 ext4_get_block_unwritten+0x2e/0x100 fs/ext4/inode.c:925
 ext4_block_write_begin+0x6f5/0x14b0 fs/ext4/inode.c:1178
 ext4_write_begin+0xa4f/0x1680 fs/ext4/ext4_jbd2.h:-1
 ext4_da_write_begin+0x449/0xd20 fs/ext4/inode.c:3057
 generic_perform_write+0x2c7/0x910 mm/filemap.c:4113
 ext4_buffered_write_iter+0xce/0x3a0 fs/ext4/file.c:299
 ext4_file_write_iter+0x298/0x1bc0 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x54b/0xa90 fs/read_write.c:686
 ksys_pwrite64 fs/read_write.c:793 [inline]
 __do_sys_pwrite64 fs/read_write.c:801 [inline]
 __se_sys_pwrite64 fs/read_write.c:798 [inline]
 __x64_sys_pwrite64+0x193/0x220 fs/read_write.c:798
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f240978e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f240a572038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f24099b5fa0 RCX: 00007f240978e929
RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004
RBP: 00007f2409810b39 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fecc R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f24099b5fa0 R15: 00007ffe2a4ec458
 </TASK>

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x7 pfn:0x28b9f
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea00013c4d08 ffffea0001aae0c8 0000000000000000
raw: 0000000000000007 ffff888031542f60 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x440dc0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_COMP), pid 5953, tgid 5953 (syz-executor), ts 311853401886, free_ts 312635592654
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
 prep_new_page mm/page_alloc.c:1712 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
 alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
 alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2510
 pagetable_alloc_noprof include/linux/mm.h:2868 [inline]
 __pte_alloc_one_noprof include/asm-generic/pgalloc.h:75 [inline]
 pte_alloc_one+0x21/0x170 arch/x86/mm/pgtable.c:18
 __pte_alloc+0x25/0x1a0 mm/memory.c:459
 copy_pte_range mm/memory.c:1130 [inline]
 copy_pmd_range+0x68e6/0x7000 mm/memory.c:1285
 copy_pud_range mm/memory.c:1322 [inline]
 copy_p4d_range mm/memory.c:1346 [inline]
 copy_page_range+0xc46/0x1270 mm/memory.c:1434
 dup_mmap+0xf57/0x1ac0 mm/mmap.c:1838
 dup_mm kernel/fork.c:1476 [inline]
 copy_mm+0x13c/0x4b0 kernel/fork.c:1528
 copy_process+0x1706/0x3c00 kernel/fork.c:2168
 kernel_clone+0x21e/0x870 kernel/fork.c:2598
 __do_sys_clone kernel/fork.c:2741 [inline]
 __se_sys_clone kernel/fork.c:2725 [inline]
 __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2725
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 13 tgid 13 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1248 [inline]
 __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
 pagetable_free include/linux/mm.h:2885 [inline]
 pagetable_dtor_free include/linux/mm.h:2983 [inline]
 __tlb_remove_table+0x2d2/0x3b0 include/asm-generic/tlb.h:220
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2576 [inline]
 rcu_core+0xca8/0x1710 kernel/rcu/tree.c:2832
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 do_softirq+0xec/0x180 kernel/softirq.c:480
 __local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 batadv_nc_purge_paths+0x318/0x3b0 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
 process_one_work kernel/workqueue.c:3235 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3318
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3399
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff888028b9fb00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888028b9fb80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888028b9fc00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                 ^
 ffff888028b9fc80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888028b9fd00: 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 ext4_ext_correct_indexes+0x72/0x5b0 fs/ext4/extents.c:1712
Read of size 8 at addr ffff888028b9fc50 by task syz.4.1185/11617

CPU: 0 UID: 0 PID: 11617 Comm: syz.4.1185 Not tainted 6.16.0-rc1-next-20250611-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0xd2/0x2b0 mm/kasan/report.c:521
 kasan_report+0x118/0x150 mm/kasan/report.c:634
 ext4_ext_correct_indexes+0x72/0x5b0 fs/ext4/extents.c:1712
 ext4_ext_insert_extent+0x1fdd/0x4af0 fs/ext4/extents.c:2188
 ext4_ext_map_blocks+0x1792/0x6ac0 fs/ext4/extents.c:4404
 ext4_map_create_blocks fs/ext4/inode.c:609 [inline]
 ext4_map_blocks+0x931/0x18d0 fs/ext4/inode.c:813
 _ext4_get_block+0x200/0x4c0 fs/ext4/inode.c:892
 ext4_get_block_unwritten+0x2e/0x100 fs/ext4/inode.c:925
 ext4_block_write_begin+0x6f5/0x14b0 fs/ext4/inode.c:1178
 ext4_write_begin+0xa4f/0x1680 fs/ext4/ext4_jbd2.h:-1
 ext4_da_write_begin+0x449/0xd20 fs/ext4/inode.c:3057
 generic_perform_write+0x2c7/0x910 mm/filemap.c:4113
 ext4_buffered_write_iter+0xce/0x3a0 fs/ext4/file.c:299
 ext4_file_write_iter+0x298/0x1bc0 fs/ext4/file.c:-1
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x54b/0xa90 fs/read_write.c:686
 ksys_pwrite64 fs/read_write.c:793 [inline]
 __do_sys_pwrite64 fs/read_write.c:801 [inline]
 __se_sys_pwrite64 fs/read_write.c:798 [inline]
 __x64_sys_pwrite64+0x193/0x220 fs/read_write.c:798
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f240978e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f240a572038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f24099b5fa0 RCX: 00007f240978e929
RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004
RBP: 00007f2409810b39 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fecc R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f24099b5fa0 R15: 00007ffe2a4ec458
 </TASK>

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x7 pfn:0x28b9f
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea00013c4d08 ffffea0001aae0c8 0000000000000000
raw: 0000000000000007 ffff888031542f60 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x440dc0(GFP_KERNEL_ACCOUNT|__GFP_ZERO|__GFP_COMP), pid 5953, tgid 5953 (syz-executor), ts 311853401886, free_ts 312635592654
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
 prep_new_page mm/page_alloc.c:1712 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
 alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
 alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2510
 pagetable_alloc_noprof include/linux/mm.h:2868 [inline]
 __pte_alloc_one_noprof include/asm-generic/pgalloc.h:75 [inline]
 pte_alloc_one+0x21/0x170 arch/x86/mm/pgtable.c:18
 __pte_alloc+0x25/0x1a0 mm/memory.c:459
 copy_pte_range mm/memory.c:1130 [inline]
 copy_pmd_range+0x68e6/0x7000 mm/memory.c:1285
 copy_pud_range mm/memory.c:1322 [inline]
 copy_p4d_range mm/memory.c:1346 [inline]
 copy_page_range+0xc46/0x1270 mm/memory.c:1434
 dup_mmap+0xf57/0x1ac0 mm/mmap.c:1838
 dup_mm kernel/fork.c:1476 [inline]
 copy_mm+0x13c/0x4b0 kernel/fork.c:1528
 copy_process+0x1706/0x3c00 kernel/fork.c:2168
 kernel_clone+0x21e/0x870 kernel/fork.c:2598
 __do_sys_clone kernel/fork.c:2741 [inline]
 __se_sys_clone kernel/fork.c:2725 [inline]
 __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2725
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 13 tgid 13 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1248 [inline]
 __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
 pagetable_free include/linux/mm.h:2885 [inline]
 pagetable_dtor_free include/linux/mm.h:2983 [inline]
 __tlb_remove_table+0x2d2/0x3b0 include/asm-generic/tlb.h:220
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2576 [inline]
 rcu_core+0xca8/0x1710 kernel/rcu/tree.c:2832
 handle_softirqs+0x283/0x870 kernel/softirq.c:579
 do_softirq+0xec/0x180 kernel/softirq.c:480
 __local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 batadv_nc_purge_paths+0x318/0x3b0 net/batman-adv/network-coding.c:471
 batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
 process_one_work kernel/workqueue.c:3235 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3318
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3399
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff888028b9fb00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888028b9fb80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888028b9fc00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                 ^
 ffff888028b9fc80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff888028b9fd00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================