Extracting prog: 1m53.23731436s Minimizing prog: 15m16.446169344s Simplifying prog options: 0s Extracting C: 35.080630343s Simplifying C: 7m20.635305438s 1 programs, timeouts [30s 6m0s] 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:6 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}}): mkdir-pipe2$9p-syz_genetlink_get_family_id$ipvs-socket$nl_generic-write$binfmt_elf64-socket$pppoe-getsockopt$sock_cred-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) syz_genetlink_get_family_id$ipvs(0x0, 0xffffffffffffffff) socket$nl_generic(0x10, 0x3, 0x10) write$binfmt_elf64(0xffffffffffffffff, 0x0, 0x7c8) r2 = socket$pppoe(0x18, 0x1, 0x0) getsockopt$sock_cred(r2, 0x1, 0x11, 0x0, 0x0) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program crashed: WARNING in p9_client_create single: successfully extracted reproducer found reproducer with 8 syscalls minimizing guilty program testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-syz_genetlink_get_family_id$ipvs-socket$nl_generic-write$binfmt_elf64-socket$pppoe-getsockopt$sock_cred detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140), 0x0) syz_genetlink_get_family_id$ipvs(0x0, 0xffffffffffffffff) socket$nl_generic(0x10, 0x3, 0x10) write$binfmt_elf64(0xffffffffffffffff, 0x0, 0x7c8) r0 = socket$pppoe(0x18, 0x1, 0x0) getsockopt$sock_cred(r0, 0x1, 0x11, 0x0, 0x0) program did not crash testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-syz_genetlink_get_family_id$ipvs-socket$nl_generic-write$binfmt_elf64-socket$pppoe-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) syz_genetlink_get_family_id$ipvs(0x0, 0xffffffffffffffff) socket$nl_generic(0x10, 0x3, 0x10) write$binfmt_elf64(0xffffffffffffffff, 0x0, 0x7c8) socket$pppoe(0x18, 0x1, 0x0) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program crashed: WARNING in p9_client_create testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-syz_genetlink_get_family_id$ipvs-socket$nl_generic-write$binfmt_elf64-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) syz_genetlink_get_family_id$ipvs(0x0, 0xffffffffffffffff) socket$nl_generic(0x10, 0x3, 0x10) write$binfmt_elf64(0xffffffffffffffff, 0x0, 0x7c8) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program crashed: WARNING in p9_client_create testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-syz_genetlink_get_family_id$ipvs-socket$nl_generic-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) syz_genetlink_get_family_id$ipvs(0x0, 0xffffffffffffffff) socket$nl_generic(0x10, 0x3, 0x10) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program crashed: WARNING in p9_client_create testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-syz_genetlink_get_family_id$ipvs-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) syz_genetlink_get_family_id$ipvs(0x0, 0xffffffffffffffff) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program crashed: WARNING in p9_client_create testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program crashed: WARNING in p9_client_create testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {}, 0x2c, {}, 0x2c, {[], [], 0x6b}}) program did not crash testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): pipe2$9p-mount$9p_fd detailed listing: executing program 0: pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program did not crash testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd detailed listing: executing program 0: mkdir(0x0, 0x0) pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program did not crash testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(0x0, 0x0) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {}, 0x2c, {}, 0x2c, {[], [], 0x6b}}) program did not crash testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) mount$9p_fd(0x0, 0x0, &(0x7f00000000c0), 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program did not crash testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', 0x0, 0x0, &(0x7f0000001340)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[], [], 0x6b}}) program did not crash testing program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd detailed listing: executing program 0: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000140), 0x0) mount$9p_fd(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0), 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=57.382199194s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd program crashed: WARNING in p9_client_create simplifying C reproducer testing compiled C program (duration=57.382199194s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd program crashed: WARNING in p9_client_create testing compiled C program (duration=57.382199194s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-pipe2$9p-mount$9p_fd program did not crash testing compiled C program (duration=57.382199194s, {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}}): mkdir-pipe2$9p-mount$9p_fd program did not crash testing compiled C program (duration=57.382199194s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd program crashed: WARNING in p9_client_create testing compiled C program (duration=57.382199194s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd program crashed: WARNING in p9_client_create testing compiled C program (duration=57.382199194s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd program crashed: WARNING in p9_client_create testing compiled C program (duration=57.382199194s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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}}): mkdir-pipe2$9p-mount$9p_fd program crashed: WARNING in p9_client_create testing compiled C program (duration=57.382199194s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-pipe2$9p-mount$9p_fd program crashed: WARNING in p9_client_create reproducing took 25m5.399441815s repro crashed as (corrupted=false): ------------[ cut here ]------------ kmem_cache of name '9p-fcall-cache' already exists WARNING: CPU: 0 PID: 5102 at mm/slab_common.c:108 kmem_cache_sanity_check mm/slab_common.c:107 [inline] WARNING: CPU: 0 PID: 5102 at mm/slab_common.c:108 __kmem_cache_create_args+0xa7/0x350 mm/slab_common.c:294 Modules linked in: CPU: 0 UID: 0 PID: 5102 Comm: syz-executor167 Not tainted 6.11.0-syzkaller-09959-gabf2050f51fd #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:kmem_cache_sanity_check mm/slab_common.c:107 [inline] RIP: 0010:__kmem_cache_create_args+0xa7/0x350 mm/slab_common.c:294 Code: 8e 48 8b 1b 48 39 eb 74 25 48 8b 7b f8 4c 89 fe e8 fe 20 df 09 85 c0 75 e8 90 48 c7 c7 8d d2 0a 8e 4c 89 fe e8 da 82 78 ff 90 <0f> 0b 90 90 4c 89 ff be 20 00 00 00 e8 58 22 df 09 48 85 c0 0f 85 RSP: 0018:ffffc9000b18f788 EFLAGS: 00010246 RAX: 95ae9352a8e3dd00 RBX: ffff88803e076428 RCX: ffff888000910000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8ea1fa80 R08: ffffffff8155aaa2 R09: fffffbfff1cf9fd8 R10: dffffc0000000000 R11: fffffbfff1cf9fd8 R12: 0000000000020018 R13: 0000000000000000 R14: ffffc9000b18f860 R15: ffffffff8d2da0c0 FS: 0000555583ff6380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555eec5d1dc8 CR3: 00000000360da000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kmem_cache_create_usercopy include/linux/slab.h:361 [inline] p9_client_create+0xba5/0x1110 net/9p/client.c:1042 v9fs_session_init+0x1e4/0x1b80 fs/9p/v9fs.c:410 v9fs_mount+0xcf/0xaa0 fs/9p/vfs_super.c:122 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2b0 fs/super.c:1800 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4055 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4032 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3d97f80e29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe6a2639f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f3d97fca04e RCX: 00007f3d97f80e29 RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000000000000 RBP: 00000000000f4240 R08: 0000000020001340 R09: 00000000000000a0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe6a263c18 R14: 00007ffe6a263a20 R15: 00007ffe6a263a10 final repro crashed as (corrupted=false): ------------[ cut here ]------------ kmem_cache of name '9p-fcall-cache' already exists WARNING: CPU: 0 PID: 5102 at mm/slab_common.c:108 kmem_cache_sanity_check mm/slab_common.c:107 [inline] WARNING: CPU: 0 PID: 5102 at mm/slab_common.c:108 __kmem_cache_create_args+0xa7/0x350 mm/slab_common.c:294 Modules linked in: CPU: 0 UID: 0 PID: 5102 Comm: syz-executor167 Not tainted 6.11.0-syzkaller-09959-gabf2050f51fd #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:kmem_cache_sanity_check mm/slab_common.c:107 [inline] RIP: 0010:__kmem_cache_create_args+0xa7/0x350 mm/slab_common.c:294 Code: 8e 48 8b 1b 48 39 eb 74 25 48 8b 7b f8 4c 89 fe e8 fe 20 df 09 85 c0 75 e8 90 48 c7 c7 8d d2 0a 8e 4c 89 fe e8 da 82 78 ff 90 <0f> 0b 90 90 4c 89 ff be 20 00 00 00 e8 58 22 df 09 48 85 c0 0f 85 RSP: 0018:ffffc9000b18f788 EFLAGS: 00010246 RAX: 95ae9352a8e3dd00 RBX: ffff88803e076428 RCX: ffff888000910000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffffff8ea1fa80 R08: ffffffff8155aaa2 R09: fffffbfff1cf9fd8 R10: dffffc0000000000 R11: fffffbfff1cf9fd8 R12: 0000000000020018 R13: 0000000000000000 R14: ffffc9000b18f860 R15: ffffffff8d2da0c0 FS: 0000555583ff6380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555eec5d1dc8 CR3: 00000000360da000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kmem_cache_create_usercopy include/linux/slab.h:361 [inline] p9_client_create+0xba5/0x1110 net/9p/client.c:1042 v9fs_session_init+0x1e4/0x1b80 fs/9p/v9fs.c:410 v9fs_mount+0xcf/0xaa0 fs/9p/vfs_super.c:122 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2b0 fs/super.c:1800 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4055 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4032 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3d97f80e29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe6a2639f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f3d97fca04e RCX: 00007f3d97f80e29 RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000000000000 RBP: 00000000000f4240 R08: 0000000020001340 R09: 00000000000000a0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe6a263c18 R14: 00007ffe6a263a20 R15: 00007ffe6a263a10