Extracting prog: 1m34.136591008s
Minimizing prog: 15m23.123818375s
Simplifying prog options: 0s
Extracting C: 57.159898237s
Simplifying C: 9m0.616784337s


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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sync-socket$packet-setsockopt$packet_tx_ring-mmap-mmap-mprotect-syz_clone-syz_clone-syz_extract_tcp_res$synack-syz_emit_ethernet
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000100)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0) (async)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0)
syz_extract_tcp_res$synack(&(0x7f0000000000)={0x41424344, <r1=>0x41424344}, 0x1, 0x0)
syz_emit_ethernet(0x5a, &(0x7f0000000040)=ANY=[@ANYBLOB="aaaaaaaaaaaa000b5d9200000800451c004c0000000000069078ac1414bbac1414aafffc4e22", @ANYRES32=r1, @ANYRES32=0x41424344, @ANYBLOB="e440000090900000080a000000e35f000000014d000e04f6fea52eb715ea7022d6e202047ab0d6b02663e594"], 0x0)

program crashed: WARNING in ip6mr_free_table
single: successfully extracted reproducer
found reproducer with 10 syscalls
minimizing guilty program
testing program (duration=48.917162524s, {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}}): sync-socket$packet-setsockopt$packet_tx_ring-mmap-mmap-mprotect-syz_clone-syz_clone-syz_extract_tcp_res$synack
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000100)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0) (async)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0)
syz_extract_tcp_res$synack(&(0x7f0000000000), 0x1, 0x0)

program crashed: WARNING in ip6mr_free_table
testing program (duration=48.917162524s, {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}}): sync-socket$packet-setsockopt$packet_tx_ring-mmap-mmap-mprotect-syz_clone-syz_clone
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000100)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0) (async)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in ip6mr_free_table
testing program (duration=48.917162524s, {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}}): sync-socket$packet-setsockopt$packet_tx_ring-mmap-mmap-mprotect-syz_clone
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000100)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0) (async)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)

program crashed: WARNING in ip6mr_free_table
testing program (duration=48.917162524s, {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}}): sync-socket$packet-setsockopt$packet_tx_ring-mmap-mmap-mprotect
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000100)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0) (async)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)

program did not crash
testing program (duration=48.917162524s, {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}}): sync-socket$packet-setsockopt$packet_tx_ring-mmap-mmap-syz_clone
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000100)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0) (async)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)

program did not crash
testing program (duration=48.917162524s, {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}}): sync-socket$packet-setsockopt$packet_tx_ring-mmap-mprotect-syz_clone
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000100)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0) (async)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)

program did not crash
testing program (duration=48.917162524s, {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}}): sync-socket$packet-setsockopt$packet_tx_ring-mmap-mprotect-syz_clone
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000100)=@req3={0x10000, 0x100000001, 0x10000, 0x1}, 0x1c)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)

program did not crash
testing program (duration=48.917162524s, {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}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0) (async)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)

program crashed: WARNING in ip6mr_free_table
testing program (duration=48.917162524s, {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}}): sync-mmap-mmap-mprotect-syz_clone
detailed listing:
executing program 0:
sync()
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, 0xffffffffffffffff, 0x0) (async)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, 0xffffffffffffffff, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)

program did not crash
testing program (duration=48.917162524s, {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}}): socket$packet-mmap-mmap-mprotect-syz_clone
detailed listing:
executing program 0:
r0 = socket$packet(0x11, 0x3, 0x300)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0) (async)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0) (async)

program did not crash
testing program (duration=48.917162524s, {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}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
detailed listing:
executing program 0:
sync()
r0 = socket$packet(0x11, 0x3, 0x300)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mmap(&(0x7f0000ff0000/0x10000)=nil, 0x10000, 0x0, 0x13012, r0, 0x0)
mprotect(&(0x7f0000ff7000/0x1000)=nil, 0x1000, 0xb)
syz_clone(0x640c7000, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: WARNING in ip6mr_free_table
extracting C reproducer
testing compiled C program (duration=48.917162524s, {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}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
program crashed: WARNING in ip6mr_free_table
simplifying C reproducer
testing compiled C program (duration=48.917162524s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
program did not crash
testing compiled C program (duration=48.917162524s, {Threaded:true 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}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
program did not crash
testing compiled C program (duration=48.917162524s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
program did not crash
testing compiled C program (duration=48.917162524s, {Threaded:true 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}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
program crashed: WARNING in ip6mr_free_table
testing compiled C program (duration=48.917162524s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
program crashed: WARNING in ip6mr_free_table
testing compiled C program (duration=48.917162524s, {Threaded:true 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}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
program crashed: WARNING in ip6mr_free_table
testing compiled C program (duration=48.917162524s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
program crashed: WARNING in ip6mr_free_table
testing compiled C program (duration=48.917162524s, {Threaded:true 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:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sync-socket$packet-mmap-mmap-mprotect-syz_clone
program crashed: WARNING in ip6mr_free_table
reproducing took 26m55.037116305s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5828 at net/ipv6/ip6mr.c:419 ip6mr_free_table+0xbd/0x120 net/ipv6/ip6mr.c:419
Modules linked in:
CPU: 1 UID: 0 PID: 5828 Comm: syz-executor387 Not tainted 6.13.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ip6mr_free_table+0xbd/0x120 net/ipv6/ip6mr.c:419
Code: 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 58 49 83 bc 24 c0 0e 00 00 00 74 09 e8 c4 c5 af f7 90 <0f> 0b 90 e8 bb c5 af f7 48 8d 7b 38 e8 22 86 9c f7 48 89 df be 0f
RSP: 0018:ffffc900047bf820 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888074d54000 RCX: ffffffff89ea4014
RDX: ffff88802e6a0000 RSI: ffffffff89ea404c RDI: ffff88802ce56980
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802ce55ac0
R13: ffff888074d54000 R14: ffff888074d54008 R15: dead000000000100
FS:  00007fe3da4fa6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3da5eb250 CR3: 0000000074e5c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ip6mr_rules_exit+0x176/0x2d0 net/ipv6/ip6mr.c:283
 ip6mr_net_exit_batch+0x53/0xa0 net/ipv6/ip6mr.c:1388
 ops_exit_list+0x128/0x180 net/core/net_namespace.c:177
 setup_net+0x4fe/0x860 net/core/net_namespace.c:394
 copy_net_ns+0x2b4/0x6b0 net/core/net_namespace.c:500
 create_new_namespaces+0x3ea/0xad0 kernel/nsproxy.c:110
 copy_namespaces+0x468/0x560 kernel/nsproxy.c:179
 copy_process+0x2a11/0x8df0 kernel/fork.c:2398
 kernel_clone+0xfd/0x960 kernel/fork.c:2807
 __do_sys_clone+0xba/0x100 kernel/fork.c:2950
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe3da5603d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe3da4fa238 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fe3da5ea318 RCX: 00007fe3da5603d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000640c7000
RBP: 00007fe3da5ea310 R08: 0000000000000000 R09: 00007fe3da4fa6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe3da5b7074
R13: 000000000000006e R14: 00007fff81aeffd0 R15: 00007fff81af00b8
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5828 at net/ipv6/ip6mr.c:419 ip6mr_free_table+0xbd/0x120 net/ipv6/ip6mr.c:419
Modules linked in:
CPU: 1 UID: 0 PID: 5828 Comm: syz-executor387 Not tainted 6.13.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:ip6mr_free_table+0xbd/0x120 net/ipv6/ip6mr.c:419
Code: 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 58 49 83 bc 24 c0 0e 00 00 00 74 09 e8 c4 c5 af f7 90 <0f> 0b 90 e8 bb c5 af f7 48 8d 7b 38 e8 22 86 9c f7 48 89 df be 0f
RSP: 0018:ffffc900047bf820 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888074d54000 RCX: ffffffff89ea4014
RDX: ffff88802e6a0000 RSI: ffffffff89ea404c RDI: ffff88802ce56980
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802ce55ac0
R13: ffff888074d54000 R14: ffff888074d54008 R15: dead000000000100
FS:  00007fe3da4fa6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3da5eb250 CR3: 0000000074e5c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ip6mr_rules_exit+0x176/0x2d0 net/ipv6/ip6mr.c:283
 ip6mr_net_exit_batch+0x53/0xa0 net/ipv6/ip6mr.c:1388
 ops_exit_list+0x128/0x180 net/core/net_namespace.c:177
 setup_net+0x4fe/0x860 net/core/net_namespace.c:394
 copy_net_ns+0x2b4/0x6b0 net/core/net_namespace.c:500
 create_new_namespaces+0x3ea/0xad0 kernel/nsproxy.c:110
 copy_namespaces+0x468/0x560 kernel/nsproxy.c:179
 copy_process+0x2a11/0x8df0 kernel/fork.c:2398
 kernel_clone+0xfd/0x960 kernel/fork.c:2807
 __do_sys_clone+0xba/0x100 kernel/fork.c:2950
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe3da5603d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe3da4fa238 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fe3da5ea318 RCX: 00007fe3da5603d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000640c7000
RBP: 00007fe3da5ea310 R08: 0000000000000000 R09: 00007fe3da4fa6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe3da5b7074
R13: 000000000000006e R14: 00007fff81aeffd0 R15: 00007fff81af00b8
 </TASK>