Extracting prog: 4m40.44923959s
Minimizing prog: 31m34.190127875s
Simplifying prog options: 2m13.558536006s
Extracting C: 1m12.526865952s
Simplifying C: 15m34.36348515s


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}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
detailed listing:
executing program 0:
r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000100)='/sys/power/resume', 0x88102, 0x0)
write$cgroup_int(r0, &(0x7f0000000040)=0x704, 0x642a)
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000500)='./file0\x00', 0x0, &(0x7f0000000540), 0x1, 0x4a3, &(0x7f0000000580)="$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")

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {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}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
detailed listing:
executing program 0:
r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000100)='/sys/power/resume', 0x88102, 0x0)
write$cgroup_int(r0, &(0x7f0000000040)=0x704, 0x642a)
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000500)='./file0\x00', 0x0, &(0x7f0000000540), 0x1, 0x4a3, &(0x7f0000000580)="$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")

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}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
detailed listing:
executing program 0:
r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000100)='/sys/power/resume', 0x88102, 0x0)
write$cgroup_int(r0, &(0x7f0000000040)=0x704, 0x642a)
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000500)='./file0\x00', 0x0, &(0x7f0000000540), 0x1, 0x4a3, &(0x7f0000000580)="$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")

program crashed: kernel BUG in submit_bh_wbc
single: successfully extracted reproducer
found reproducer with 3 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}}): openat$sysfs-write$cgroup_int
detailed listing:
executing program 0:
r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000100)='/sys/power/resume', 0x88102, 0x0)
write$cgroup_int(r0, &(0x7f0000000040)=0x704, 0x642a)

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}}): openat$sysfs-syz_mount_image$ext4
detailed listing:
executing program 0:
openat$sysfs(0xffffffffffffff9c, &(0x7f0000000100)='/sys/power/resume', 0x88102, 0x0)
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000500)='./file0\x00', 0x0, &(0x7f0000000540), 0x1, 0x4a3, &(0x7f0000000580)="$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")

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}}): write$cgroup_int-syz_mount_image$ext4
detailed listing:
executing program 0:
write$cgroup_int(0xffffffffffffffff, &(0x7f0000000040)=0x704, 0x642a)
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000500)='./file0\x00', 0x0, &(0x7f0000000540), 0x1, 0x4a3, &(0x7f0000000580)="$eJzs3c9rXNUeAPDvzDRpkua9/niPR9sHr4U+6HtKM/mBNFE3LkRdFMSCG4Uak2msmWRCZlKb0EWruy5ciKIgLtz7F7ixK4sgrnUvLqSiNYIKwsi9M5Pm18RB0wzkfj5wO+feczvfczJ8D3fOvXduAJl1OvknFzEYEV9ExOHG6sYdTjdeVu9dn0qWXNTrF7/Ppfsl661dW//vUETciIi+iHjuqYiXc1vjVpdXZifL5dJic71Ym1soVpdXzl2Zm5wpzZTmR8bPT0yMD4+NTuxaX2+9+eqtCx8/0/vRz2/cvfPWp58kzRps1q3vx25qdL0njq7bdiAiHn8Qwbqg0OxPf7cbwp+SfH7/iIgzaf4fjkL6aQJZUK/X67/VD7arfrIO7Fv59Bg4lx+KiEY5nx8aahzD/zMG8uVKtfbw5crS/HTjWPlI9OQvXymXhpvfFY5ETy5ZH0nL99dHN62PRaTHwG8X+tP1oalKeXpvhzpgk0Ob8v+nQiP/gYzwlR+yS/5Ddsl/yC75D9kl/yG75D9kl/yH7JL/kF3yH7JL/kN2yX/IpGcvXEiWeuv+9+mry0uzlavnpkvV2aG5pamhqcriwtBMpTKT3rMz90fvV65UFkYeiaVrxVqpWitWl1cuzVWW5muX0vv6L5V69qRXQCeOnrr9VS4ibjzany6J3madXIX9rV7PRbfvQQa6o9DtAQjoGlN/kF2+4wPb/ETvBn3tKhZ2vy3A3sh3uwFA15w94fwfZJX5f8gu8/+QXY7xAfP/kD3m/yG7Bts8/+tv657dNRwRf4+ILws9B1vP+gL2g/y3uebx/9nD/x3cXNub+yU9RdAbEa+9f/Hda5O12uJIsv2Hte2195rbR7vRfqBTrTxt5TEAkF2r965PtZa9jPvdE42LELbGP9Ccm+xLz1EOrOY2XKuQ26VrF27cjIjj28XPNZ933jjzMbBa2BL/WPM113iLtL0H0uem7038E+vi/2dd/JN/+a8C2XA7GX+Gt8u/fJrTsZZ/G8efwV26dqL9+JdfG/8Kbca/Ux3GeOWD179pG/9mxMlt47fi9aWxNsdP2na2w/h3X3z+X+3q6h823me7+C1JqVibWyhWl1fOpb8jN1OaHxk/PzExPjw2OlFM56iLrZnqrR47/vmdnfo/0Cb+Tv1Ptv2/w/7/+u/PXji9Q/z/ndn+8z+2Q/z+iHiow/g/jn79Uru6JP50m/7nd4ifbBvrMH71nacPdrgrALAHqssrs5PlcmlRQUFBYa3Q7ZEJeNDuJ323WwIAAAAAAAAAAAB0ai8uJ+52HwEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA9oPfAwAA//8WpdYg")

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}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
detailed listing:
executing program 0:
r0 = openat$sysfs(0xffffffffffffff9c, 0x0, 0x88102, 0x0)
write$cgroup_int(r0, &(0x7f0000000040)=0x704, 0x642a)
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000500)='./file0\x00', 0x0, &(0x7f0000000540), 0x1, 0x4a3, &(0x7f0000000580)="$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")

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}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
detailed listing:
executing program 0:
r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000100)='/sys/power/resume', 0x88102, 0x0)
write$cgroup_int(r0, 0x0, 0x0)
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000500)='./file0\x00', 0x0, &(0x7f0000000540), 0x1, 0x4a3, &(0x7f0000000580)="$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")

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}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
detailed listing:
executing program 0:
r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000100)='/sys/power/resume', 0x88102, 0x0)
write$cgroup_int(r0, &(0x7f0000000040)=0x704, 0x642a)
syz_mount_image$ext4(&(0x7f00000004c0)='ext4\x00', &(0x7f0000000500)='./file0\x00', 0x0, &(0x7f0000000540), 0x1, 0x4a3, &(0x7f0000000580)="$eJzs3c9rXNUeAPDvzDRpkua9/niPR9sHr4U+6HtKM/mBNFE3LkRdFMSCG4Uak2msmWRCZlKb0EWruy5ciKIgLtz7F7ixK4sgrnUvLqSiNYIKwsi9M5Pm18RB0wzkfj5wO+feczvfczJ8D3fOvXduAJl1OvknFzEYEV9ExOHG6sYdTjdeVu9dn0qWXNTrF7/Ppfsl661dW//vUETciIi+iHjuqYiXc1vjVpdXZifL5dJic71Ym1soVpdXzl2Zm5wpzZTmR8bPT0yMD4+NTuxaX2+9+eqtCx8/0/vRz2/cvfPWp58kzRps1q3vx25qdL0njq7bdiAiHn8Qwbqg0OxPf7cbwp+SfH7/iIgzaf4fjkL6aQJZUK/X67/VD7arfrIO7Fv59Bg4lx+KiEY5nx8aahzD/zMG8uVKtfbw5crS/HTjWPlI9OQvXymXhpvfFY5ETy5ZH0nL99dHN62PRaTHwG8X+tP1oalKeXpvhzpgk0Ob8v+nQiP/gYzwlR+yS/5Ddsl/yC75D9kl/yG75D9kl/yH7JL/kF3yH7JL/kN2yX/IpGcvXEiWeuv+9+mry0uzlavnpkvV2aG5pamhqcriwtBMpTKT3rMz90fvV65UFkYeiaVrxVqpWitWl1cuzVWW5muX0vv6L5V69qRXQCeOnrr9VS4ibjzany6J3madXIX9rV7PRbfvQQa6o9DtAQjoGlN/kF2+4wPb/ETvBn3tKhZ2vy3A3sh3uwFA15w94fwfZJX5f8gu8/+QXY7xAfP/kD3m/yG7Bts8/+tv657dNRwRf4+ILws9B1vP+gL2g/y3uebx/9nD/x3cXNub+yU9RdAbEa+9f/Hda5O12uJIsv2Hte2195rbR7vRfqBTrTxt5TEAkF2r965PtZa9jPvdE42LELbGP9Ccm+xLz1EOrOY2XKuQ26VrF27cjIjj28XPNZ933jjzMbBa2BL/WPM113iLtL0H0uem7038E+vi/2dd/JN/+a8C2XA7GX+Gt8u/fJrTsZZ/G8efwV26dqL9+JdfG/8Kbca/Ux3GeOWD179pG/9mxMlt47fi9aWxNsdP2na2w/h3X3z+X+3q6h823me7+C1JqVibWyhWl1fOpb8jN1OaHxk/PzExPjw2OlFM56iLrZnqrR47/vmdnfo/0Cb+Tv1Ptv2/w/7/+u/PXji9Q/z/ndn+8z+2Q/z+iHiow/g/jn79Uru6JP50m/7nd4ifbBvrMH71nacPdrgrALAHqssrs5PlcmlRQUFBYa3Q7ZEJeNDuJ323WwIAAAAAAAAAAAB0ai8uJ+52HwEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA9oPfAwAA//8WpdYg")

program crashed: kernel BUG in submit_bh_wbc
extracting C reproducer
testing compiled C 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}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
program crashed: kernel BUG in submit_bh_wbc
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {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:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
program crashed: kernel BUG in submit_bh_wbc
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
program crashed: kernel BUG in submit_bh_wbc
testing compiled C program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
program crashed: kernel BUG in submit_bh_wbc
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$sysfs-write$cgroup_int-syz_mount_image$ext4
program crashed: kernel BUG in submit_bh_wbc
reproducing took 59m15.600958013s
repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2666!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4332 Comm: kmmpd-loop4 Tainted: G        W          6.1.121-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : submit_bh_wbc+0x3f4/0x468 fs/buffer.c:2666
lr : submit_bh_wbc+0x3f4/0x468 fs/buffer.c:2666
sp : ffff800021207b10
x29: ffff800021207b20 x28: 1fffe0001b358c72 x27: dfff800000000000
x26: 1ffff00004240f74 x25: 0000000000000000 x24: 1fffe0001c90aa91
x23: 1fffe0001b358ccf x22: ffff0000da4b2000 x21: 0000000000003801
x20: ffff0000e4855488 x19: 0000000000000005 x18: 1fffe000367a0176
x17: ffff800015a8d000 x16: ffff8000082ffa8c x15: ffff0001b3d00bbc
x14: 1ffff00002b520b2 x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff800008b3ce10
x8 : ffff0000c7423780 x7 : ffff800008eb22c8 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008eb1d90
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 submit_bh_wbc+0x3f4/0x468 fs/buffer.c:2666
 submit_bh+0x2c/0x3c fs/buffer.c:2707
 write_mmp_block_thawed+0x340/0x52c fs/ext4/mmp.c:51
 write_mmp_block+0x23c/0x734 fs/ext4/mmp.c:67
 kmmpd+0x330/0x9f8 fs/ext4/mmp.c:178
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
Code: 17ffffad 97e6dcde d4210000 97e6dcdc (d4210000) 
---[ end trace 0000000000000000 ]---

final repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at fs/buffer.c:2666!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4332 Comm: kmmpd-loop4 Tainted: G        W          6.1.121-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : submit_bh_wbc+0x3f4/0x468 fs/buffer.c:2666
lr : submit_bh_wbc+0x3f4/0x468 fs/buffer.c:2666
sp : ffff800021207b10
x29: ffff800021207b20 x28: 1fffe0001b358c72 x27: dfff800000000000
x26: 1ffff00004240f74 x25: 0000000000000000 x24: 1fffe0001c90aa91
x23: 1fffe0001b358ccf x22: ffff0000da4b2000 x21: 0000000000003801
x20: ffff0000e4855488 x19: 0000000000000005 x18: 1fffe000367a0176
x17: ffff800015a8d000 x16: ffff8000082ffa8c x15: ffff0001b3d00bbc
x14: 1ffff00002b520b2 x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff800008b3ce10
x8 : ffff0000c7423780 x7 : ffff800008eb22c8 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008eb1d90
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 submit_bh_wbc+0x3f4/0x468 fs/buffer.c:2666
 submit_bh+0x2c/0x3c fs/buffer.c:2707
 write_mmp_block_thawed+0x340/0x52c fs/ext4/mmp.c:51
 write_mmp_block+0x23c/0x734 fs/ext4/mmp.c:67
 kmmpd+0x330/0x9f8 fs/ext4/mmp.c:178
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
Code: 17ffffad 97e6dcde d4210000 97e6dcdc (d4210000) 
---[ end trace 0000000000000000 ]---