Extracting prog: 49.317202846s
Minimizing prog: 21m41.028710734s
Simplifying prog options: 0s
Extracting C: 33.158351677s
Simplifying C: 7m22.135464019s


extracting reproducer from 30 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-write$RDMA_USER_CM_CMD_CREATE_ID-bpf$PROG_LOAD-write$RDMA_USER_CM_CMD_RESOLVE_IP-write$RDMA_USER_CM_CMD_CREATE_ID-mount-mkdirat-mount-openat-write
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200)={<r2=>0xffffffffffffffff}, 0x2, 0x2}}, 0x20)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000240)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140), 0x2, 0x3}}, 0x20)
bpf$PROG_LOAD(0x5, &(0x7f00000054c0)={0x13, 0x16, &(0x7f0000000540)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x48)
write$RDMA_USER_CM_CMD_RESOLVE_IP(r0, &(0x7f0000001680)={0x3, 0x40, 0xfa00, {{0xa, 0x4e23, 0xe, @empty, 0x2}, {0xa, 0x4e23, 0x9, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}, r2, 0x7}}, 0x48)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000080)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000000), 0x13f, 0x3}}, 0x20)
mount(0x0, &(0x7f0000000080)='./proc\x00', 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r3, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
single: successfully extracted reproducer
found reproducer with 13 syscalls
minimizing guilty program
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-write$RDMA_USER_CM_CMD_CREATE_ID-bpf$PROG_LOAD-write$RDMA_USER_CM_CMD_RESOLVE_IP-write$RDMA_USER_CM_CMD_CREATE_ID-mount-mkdirat-mount-openat
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200)={<r2=>0xffffffffffffffff}, 0x2, 0x2}}, 0x20)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000240)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140), 0x2, 0x3}}, 0x20)
bpf$PROG_LOAD(0x5, &(0x7f00000054c0)={0x13, 0x16, &(0x7f0000000540)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x48)
write$RDMA_USER_CM_CMD_RESOLVE_IP(r0, &(0x7f0000001680)={0x3, 0x40, 0xfa00, {{0xa, 0x4e23, 0xe, @empty, 0x2}, {0xa, 0x4e23, 0x9, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}, r2, 0x7}}, 0x48)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000080)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000000), 0x13f, 0x3}}, 0x20)
mount(0x0, &(0x7f0000000080)='./proc\x00', 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-write$RDMA_USER_CM_CMD_CREATE_ID-bpf$PROG_LOAD-write$RDMA_USER_CM_CMD_RESOLVE_IP-write$RDMA_USER_CM_CMD_CREATE_ID-mount-mkdirat-mount-write
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200)={<r2=>0xffffffffffffffff}, 0x2, 0x2}}, 0x20)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000240)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140), 0x2, 0x3}}, 0x20)
bpf$PROG_LOAD(0x5, &(0x7f00000054c0)={0x13, 0x16, &(0x7f0000000540)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x48)
write$RDMA_USER_CM_CMD_RESOLVE_IP(r0, &(0x7f0000001680)={0x3, 0x40, 0xfa00, {{0xa, 0x4e23, 0xe, @empty, 0x2}, {0xa, 0x4e23, 0x9, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}, r2, 0x7}}, 0x48)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000080)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000000), 0x13f, 0x3}}, 0x20)
mount(0x0, &(0x7f0000000080)='./proc\x00', 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-write$RDMA_USER_CM_CMD_CREATE_ID-bpf$PROG_LOAD-write$RDMA_USER_CM_CMD_RESOLVE_IP-write$RDMA_USER_CM_CMD_CREATE_ID-mount-mkdirat-openat-write
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200)={<r2=>0xffffffffffffffff}, 0x2, 0x2}}, 0x20)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000240)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140), 0x2, 0x3}}, 0x20)
bpf$PROG_LOAD(0x5, &(0x7f00000054c0)={0x13, 0x16, &(0x7f0000000540)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x48)
write$RDMA_USER_CM_CMD_RESOLVE_IP(r0, &(0x7f0000001680)={0x3, 0x40, 0xfa00, {{0xa, 0x4e23, 0xe, @empty, 0x2}, {0xa, 0x4e23, 0x9, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}, r2, 0x7}}, 0x48)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000080)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000000), 0x13f, 0x3}}, 0x20)
mount(0x0, &(0x7f0000000080)='./proc\x00', 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r3, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-write$RDMA_USER_CM_CMD_CREATE_ID-bpf$PROG_LOAD-write$RDMA_USER_CM_CMD_RESOLVE_IP-write$RDMA_USER_CM_CMD_CREATE_ID-mount-mount-openat-write
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200)={<r2=>0xffffffffffffffff}, 0x2, 0x2}}, 0x20)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000240)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140), 0x2, 0x3}}, 0x20)
bpf$PROG_LOAD(0x5, &(0x7f00000054c0)={0x13, 0x16, &(0x7f0000000540)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x48)
write$RDMA_USER_CM_CMD_RESOLVE_IP(r0, &(0x7f0000001680)={0x3, 0x40, 0xfa00, {{0xa, 0x4e23, 0xe, @empty, 0x2}, {0xa, 0x4e23, 0x9, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}, r2, 0x7}}, 0x48)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000080)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000000), 0x13f, 0x3}}, 0x20)
mount(0x0, &(0x7f0000000080)='./proc\x00', 0x0, 0x0, 0x0)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r3, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-write$RDMA_USER_CM_CMD_CREATE_ID-bpf$PROG_LOAD-write$RDMA_USER_CM_CMD_RESOLVE_IP-write$RDMA_USER_CM_CMD_CREATE_ID-mkdirat-mount-openat-write
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200)={<r2=>0xffffffffffffffff}, 0x2, 0x2}}, 0x20)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000240)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140), 0x2, 0x3}}, 0x20)
bpf$PROG_LOAD(0x5, &(0x7f00000054c0)={0x13, 0x16, &(0x7f0000000540)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x48)
write$RDMA_USER_CM_CMD_RESOLVE_IP(r0, &(0x7f0000001680)={0x3, 0x40, 0xfa00, {{0xa, 0x4e23, 0xe, @empty, 0x2}, {0xa, 0x4e23, 0x9, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}, r2, 0x7}}, 0x48)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000080)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000000), 0x13f, 0x3}}, 0x20)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r3, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-write$RDMA_USER_CM_CMD_CREATE_ID-bpf$PROG_LOAD-write$RDMA_USER_CM_CMD_RESOLVE_IP-mkdirat-mount-openat-write
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200)={<r2=>0xffffffffffffffff}, 0x2, 0x2}}, 0x20)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000240)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140), 0x2, 0x3}}, 0x20)
bpf$PROG_LOAD(0x5, &(0x7f00000054c0)={0x13, 0x16, &(0x7f0000000540)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x48)
write$RDMA_USER_CM_CMD_RESOLVE_IP(r0, &(0x7f0000001680)={0x3, 0x40, 0xfa00, {{0xa, 0x4e23, 0xe, @empty, 0x2}, {0xa, 0x4e23, 0x9, @initdev={0xfe, 0x88, '\x00', 0x1, 0x0}, 0x3}, r2, 0x7}}, 0x48)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r3, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-write$RDMA_USER_CM_CMD_CREATE_ID-bpf$PROG_LOAD-mkdirat-mount-openat-write
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200), 0x2, 0x2}}, 0x20)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000240)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140), 0x2, 0x3}}, 0x20)
bpf$PROG_LOAD(0x5, &(0x7f00000054c0)={0x13, 0x16, &(0x7f0000000540)=ANY=[@ANYBLOB="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"], &(0x7f0000000100)='GPL\x00'}, 0x48)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r2, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-write$RDMA_USER_CM_CMD_CREATE_ID-mkdirat-mount-openat-write
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200), 0x2, 0x2}}, 0x20)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f0000000240)={0x0, 0x18, 0xfa00, {0x4, &(0x7f0000000140), 0x2, 0x3}}, 0x20)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r2, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-write$RDMA_USER_CM_CMD_CREATE_ID-mkdirat-mount-openat-write
detailed listing:
executing program 0:
r0 = openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r1, &(0x7f0000004180)={0x2020}, 0x2020)
write$RDMA_USER_CM_CMD_CREATE_ID(r0, &(0x7f00000000c0)={0x0, 0x18, 0xfa00, {0x0, &(0x7f0000000200), 0x2, 0x2}}, 0x20)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r2, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-read$FUSE-mkdirat-mount-openat-write
detailed listing:
executing program 0:
openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
read$FUSE(r0, &(0x7f0000004180)={0x2020}, 0x2020)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r1, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-syz_open_procfs-mkdirat-mount-openat-write
detailed listing:
executing program 0:
openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
syz_open_procfs(0xffffffffffffffff, &(0x7f0000000080)='stat\x00')
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$rdma_cm-mkdirat-mount-openat-write
detailed listing:
executing program 0:
openat$rdma_cm(0xffffffffffffff9c, &(0x7f00000004c0), 0x2, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, 0x0, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250), 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: divide error in block2mtd_setup2
simplifying C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: divide error in block2mtd_setup2
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: divide error in block2mtd_setup2
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write
program crashed: divide error in block2mtd_setup2
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write
program crashed: divide error in block2mtd_setup2
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write
program crashed: divide error in block2mtd_setup2
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write
program crashed: divide error in block2mtd_setup2
testing compiled C program (duration=30s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write
program crashed: divide error in block2mtd_setup2
testing program (duration=30s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:false 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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000110)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r0, &(0x7f0000000250)='/dev/zram0,0', 0xb3)

program crashed: divide error in block2mtd_setup2
validation run: crashed=true
reproducing took 33m53.944702251s
repro crashed as (corrupted=false):
divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4434 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:add_device drivers/mtd/devices/block2mtd.c:275 [inline]
RIP: 0010:block2mtd_setup2+0x59e/0xf30 drivers/mtd/devices/block2mtd.c:438
Code: b9 66 fc 48 8b 1b 48 83 c3 50 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 7c b9 66 fc 48 8b 03 48 63 4c 24 20 48 99 <48> f7 f9 48 89 d3 31 ff 48 89 d6 e8 a2 62 15 fc 48 85 db 4c 8b 6c
RSP: 0018:ffffc900033c79e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888148d45e28 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000fc00000 RDI: 0000000001f00000
RBP: ffffc900033c7bf8 R08: ffff8880253a745f R09: 1ffff11004a74e8b
R10: dffffc0000000000 R11: ffffed1004a74e8c R12: dffffc0000000000
R13: ffffc900033c7a80 R14: 1ffff1100e88d802 R15: ffffc900033c7a80
FS:  000055557e290500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb10470050 CR3: 0000000030e3e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 block2mtd_setup+0x23/0xd0 drivers/mtd/devices/block2mtd.c:455
 param_attr_store+0x20a/0x300 kernel/params.c:585
 module_attr_store+0x5b/0x80 kernel/params.c:905
 kernfs_fop_write_iter+0x3a0/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x482/0x9a0 fs/read_write.c:584
 ksys_write+0x14d/0x260 fs/read_write.c:637
 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
RIP: 0033:0x7fcb1059e159
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:00007fffaab71dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fcb10825fa0 RCX: 00007fcb1059e159
RDX: 00000000000000b3 RSI: 0000200000000250 RDI: 0000000000000003
RBP: 00007fcb1063506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcb10825fac R14: 00007fcb10825fa0 R15: 00007fcb10825fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_device drivers/mtd/devices/block2mtd.c:275 [inline]
RIP: 0010:block2mtd_setup2+0x59e/0xf30 drivers/mtd/devices/block2mtd.c:438
Code: b9 66 fc 48 8b 1b 48 83 c3 50 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 7c b9 66 fc 48 8b 03 48 63 4c 24 20 48 99 <48> f7 f9 48 89 d3 31 ff 48 89 d6 e8 a2 62 15 fc 48 85 db 4c 8b 6c
RSP: 0018:ffffc900033c79e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888148d45e28 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000fc00000 RDI: 0000000001f00000
RBP: ffffc900033c7bf8 R08: ffff8880253a745f R09: 1ffff11004a74e8b
R10: dffffc0000000000 R11: ffffed1004a74e8c R12: dffffc0000000000
R13: ffffc900033c7a80 R14: 1ffff1100e88d802 R15: ffffc900033c7a80
FS:  000055557e290500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb10470050 CR3: 0000000030e3e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	b9 66 fc 48 8b       	mov    $0x8b48fc66,%ecx
   5:	1b 48 83             	sbb    -0x7d(%rax),%ecx
   8:	c3                   	ret
   9:	50                   	push   %rax
   a:	48 89 d8             	mov    %rbx,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  16:	74 08                	je     0x20
  18:	48 89 df             	mov    %rbx,%rdi
  1b:	e8 7c b9 66 fc       	call   0xfc66b99c
  20:	48 8b 03             	mov    (%rbx),%rax
  23:	48 63 4c 24 20       	movslq 0x20(%rsp),%rcx
  28:	48 99                	cqto
* 2a:	48 f7 f9             	idiv   %rcx <-- trapping instruction
  2d:	48 89 d3             	mov    %rdx,%rbx
  30:	31 ff                	xor    %edi,%edi
  32:	48 89 d6             	mov    %rdx,%rsi
  35:	e8 a2 62 15 fc       	call   0xfc1562dc
  3a:	48 85 db             	test   %rbx,%rbx
  3d:	4c                   	rex.WR
  3e:	8b                   	.byte 0x8b
  3f:	6c                   	insb   (%dx),%es:(%rdi)

final repro crashed as (corrupted=false):
divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4434 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:add_device drivers/mtd/devices/block2mtd.c:275 [inline]
RIP: 0010:block2mtd_setup2+0x59e/0xf30 drivers/mtd/devices/block2mtd.c:438
Code: b9 66 fc 48 8b 1b 48 83 c3 50 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 7c b9 66 fc 48 8b 03 48 63 4c 24 20 48 99 <48> f7 f9 48 89 d3 31 ff 48 89 d6 e8 a2 62 15 fc 48 85 db 4c 8b 6c
RSP: 0018:ffffc900033c79e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888148d45e28 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000fc00000 RDI: 0000000001f00000
RBP: ffffc900033c7bf8 R08: ffff8880253a745f R09: 1ffff11004a74e8b
R10: dffffc0000000000 R11: ffffed1004a74e8c R12: dffffc0000000000
R13: ffffc900033c7a80 R14: 1ffff1100e88d802 R15: ffffc900033c7a80
FS:  000055557e290500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb10470050 CR3: 0000000030e3e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 block2mtd_setup+0x23/0xd0 drivers/mtd/devices/block2mtd.c:455
 param_attr_store+0x20a/0x300 kernel/params.c:585
 module_attr_store+0x5b/0x80 kernel/params.c:905
 kernfs_fop_write_iter+0x3a0/0x520 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x482/0x9a0 fs/read_write.c:584
 ksys_write+0x14d/0x260 fs/read_write.c:637
 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
RIP: 0033:0x7fcb1059e159
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:00007fffaab71dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fcb10825fa0 RCX: 00007fcb1059e159
RDX: 00000000000000b3 RSI: 0000200000000250 RDI: 0000000000000003
RBP: 00007fcb1063506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcb10825fac R14: 00007fcb10825fa0 R15: 00007fcb10825fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_device drivers/mtd/devices/block2mtd.c:275 [inline]
RIP: 0010:block2mtd_setup2+0x59e/0xf30 drivers/mtd/devices/block2mtd.c:438
Code: b9 66 fc 48 8b 1b 48 83 c3 50 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 7c b9 66 fc 48 8b 03 48 63 4c 24 20 48 99 <48> f7 f9 48 89 d3 31 ff 48 89 d6 e8 a2 62 15 fc 48 85 db 4c 8b 6c
RSP: 0018:ffffc900033c79e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888148d45e28 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000fc00000 RDI: 0000000001f00000
RBP: ffffc900033c7bf8 R08: ffff8880253a745f R09: 1ffff11004a74e8b
R10: dffffc0000000000 R11: ffffed1004a74e8c R12: dffffc0000000000
R13: ffffc900033c7a80 R14: 1ffff1100e88d802 R15: ffffc900033c7a80
FS:  000055557e290500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb10470050 CR3: 0000000030e3e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	b9 66 fc 48 8b       	mov    $0x8b48fc66,%ecx
   5:	1b 48 83             	sbb    -0x7d(%rax),%ecx
   8:	c3                   	ret
   9:	50                   	push   %rax
   a:	48 89 d8             	mov    %rbx,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  16:	74 08                	je     0x20
  18:	48 89 df             	mov    %rbx,%rdi
  1b:	e8 7c b9 66 fc       	call   0xfc66b99c
  20:	48 8b 03             	mov    (%rbx),%rax
  23:	48 63 4c 24 20       	movslq 0x20(%rsp),%rcx
  28:	48 99                	cqto
* 2a:	48 f7 f9             	idiv   %rcx <-- trapping instruction
  2d:	48 89 d3             	mov    %rdx,%rbx
  30:	31 ff                	xor    %edi,%edi
  32:	48 89 d6             	mov    %rdx,%rsi
  35:	e8 a2 62 15 fc       	call   0xfc1562dc
  3a:	48 85 db             	test   %rbx,%rbx
  3d:	4c                   	rex.WR
  3e:	8b                   	.byte 0x8b
  3f:	6c                   	insb   (%dx),%es:(%rdi)