Extracting prog: 1m13.516729309s
Minimizing prog: 16m9.068205361s
Simplifying prog options: 0s
Extracting C: 1m37.965470617s
Simplifying C: 9m46.080343156s


extracting reproducer from 24 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:4 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-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-setitimer$auto-unshare$auto-unshare$auto-socket-setitimer$auto-madvise$auto-io_submit$auto-syz_genetlink_get_family_id$auto_nlctrl
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x6) (async, rerun: 32)
r1 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)={0xfc, r1, 0x1, 0x70bd2d, 0x25dfdbfe, {}, [@ETHTOOL_A_LINKMODES_OURS={0xe6, 0x3, 0x0, 0x1, [@typed={0x8, 0xc0, 0x0, 0x0, @ipv4=@multicast2}, @typed={0x4, 0x2a}, @typed={0x4, 0x11}, @typed={0x8, 0x2e, 0x0, 0x0, @fd=r0}, @generic="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32dd7c33b14cc842bc1e2a5da4203e64ceaa9db5223aa655b6313c011b3e73a75f1aa1f7b2ea43344b15bd494886e355cf6d92c8fe670a42bc677830013e9c4aa4fa30c3e6630bf0ed13206d5a18f6813c6fb03466112aedf5d67bb5b99fe96a6dcd279916b0bce029925b63c48d41ca8a76e46c6014", @nested={0x28, 0x5, 0x0, 0x1, [@nested={0x24, 0x63, 0x0, 0x1, [@nested={0x20, 0x96, 0x0, 0x1, [@typed={0x8, 0x5a, 0x0, 0x0, @str='/}!\x00'}, @nested={0x13, 0x86, 0x0, 0x1, [@typed={0xc, 0xd, 0x0, 0x0, @u64=0x6}, @generic='NV.']}]}]}]}]}]}, 0xfc}, 0x1, 0x0, 0x0, 0x40000}, 0x50) (async)
setitimer$auto(0x2, &(0x7f0000000040)={{0x0, 0x5}, {0x0, 0x8}}, 0x0)
unshare$auto(0x40000080)
unshare$auto(0x4)
r2 = socket(0xa, 0x3, 0x100) (async)
setitimer$auto(0x2, 0x0, 0x0)
madvise$auto(0x0, 0x2, 0x9) (async)
io_submit$auto(0x8, 0x400, &(0x7f00000000c0)=&(0x7f0000000080)={0x7, 0x5, 0x9, 0x8, 0x401, r2, 0x7c, 0x1, 0xf07, 0x0, 0x8000, <r3=>r2})
syz_genetlink_get_family_id$auto_nlctrl(&(0x7f0000000000), r3)

program crashed: WARNING in ip6mr_free_table
single: successfully extracted reproducer
found reproducer with 11 syscalls
minimizing guilty program
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-setitimer$auto-unshare$auto-unshare$auto-socket-setitimer$auto-madvise$auto-io_submit$auto
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x6) (async, rerun: 32)
r1 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)={0xfc, r1, 0x1, 0x70bd2d, 0x25dfdbfe, {}, [@ETHTOOL_A_LINKMODES_OURS={0xe6, 0x3, 0x0, 0x1, [@typed={0x8, 0xc0, 0x0, 0x0, @ipv4=@multicast2}, @typed={0x4, 0x2a}, @typed={0x4, 0x11}, @typed={0x8, 0x2e, 0x0, 0x0, @fd=r0}, @generic="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32dd7c33b14cc842bc1e2a5da4203e64ceaa9db5223aa655b6313c011b3e73a75f1aa1f7b2ea43344b15bd494886e355cf6d92c8fe670a42bc677830013e9c4aa4fa30c3e6630bf0ed13206d5a18f6813c6fb03466112aedf5d67bb5b99fe96a6dcd279916b0bce029925b63c48d41ca8a76e46c6014", @nested={0x28, 0x5, 0x0, 0x1, [@nested={0x24, 0x63, 0x0, 0x1, [@nested={0x20, 0x96, 0x0, 0x1, [@typed={0x8, 0x5a, 0x0, 0x0, @str='/}!\x00'}, @nested={0x13, 0x86, 0x0, 0x1, [@typed={0xc, 0xd, 0x0, 0x0, @u64=0x6}, @generic='NV.']}]}]}]}]}]}, 0xfc}, 0x1, 0x0, 0x0, 0x40000}, 0x50) (async)
setitimer$auto(0x2, &(0x7f0000000040)={{0x0, 0x5}, {0x0, 0x8}}, 0x0)
unshare$auto(0x40000080)
unshare$auto(0x4)
r2 = socket(0xa, 0x3, 0x100) (async)
setitimer$auto(0x2, 0x0, 0x0)
madvise$auto(0x0, 0x2, 0x9) (async)
io_submit$auto(0x8, 0x400, &(0x7f00000000c0)=&(0x7f0000000080)={0x7, 0x5, 0x9, 0x8, 0x401, r2, 0x7c, 0x1, 0xf07, 0x0, 0x8000, r2})

program crashed: WARNING in ip6mr_free_table
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-setitimer$auto-unshare$auto-unshare$auto-socket-setitimer$auto-madvise$auto
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x6) (async, rerun: 32)
r1 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)={0xfc, r1, 0x1, 0x70bd2d, 0x25dfdbfe, {}, [@ETHTOOL_A_LINKMODES_OURS={0xe6, 0x3, 0x0, 0x1, [@typed={0x8, 0xc0, 0x0, 0x0, @ipv4=@multicast2}, @typed={0x4, 0x2a}, @typed={0x4, 0x11}, @typed={0x8, 0x2e, 0x0, 0x0, @fd=r0}, @generic="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32dd7c33b14cc842bc1e2a5da4203e64ceaa9db5223aa655b6313c011b3e73a75f1aa1f7b2ea43344b15bd494886e355cf6d92c8fe670a42bc677830013e9c4aa4fa30c3e6630bf0ed13206d5a18f6813c6fb03466112aedf5d67bb5b99fe96a6dcd279916b0bce029925b63c48d41ca8a76e46c6014", @nested={0x28, 0x5, 0x0, 0x1, [@nested={0x24, 0x63, 0x0, 0x1, [@nested={0x20, 0x96, 0x0, 0x1, [@typed={0x8, 0x5a, 0x0, 0x0, @str='/}!\x00'}, @nested={0x13, 0x86, 0x0, 0x1, [@typed={0xc, 0xd, 0x0, 0x0, @u64=0x6}, @generic='NV.']}]}]}]}]}]}, 0xfc}, 0x1, 0x0, 0x0, 0x40000}, 0x50) (async)
setitimer$auto(0x2, &(0x7f0000000040)={{0x0, 0x5}, {0x0, 0x8}}, 0x0)
unshare$auto(0x40000080)
unshare$auto(0x4)
socket(0xa, 0x3, 0x100) (async)
setitimer$auto(0x2, 0x0, 0x0)
madvise$auto(0x0, 0x2, 0x9) (async)

program crashed: WARNING in ip6mr_free_table
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-setitimer$auto-unshare$auto-unshare$auto-socket-setitimer$auto
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x6) (async, rerun: 32)
r1 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)={0xfc, r1, 0x1, 0x70bd2d, 0x25dfdbfe, {}, [@ETHTOOL_A_LINKMODES_OURS={0xe6, 0x3, 0x0, 0x1, [@typed={0x8, 0xc0, 0x0, 0x0, @ipv4=@multicast2}, @typed={0x4, 0x2a}, @typed={0x4, 0x11}, @typed={0x8, 0x2e, 0x0, 0x0, @fd=r0}, @generic="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32dd7c33b14cc842bc1e2a5da4203e64ceaa9db5223aa655b6313c011b3e73a75f1aa1f7b2ea43344b15bd494886e355cf6d92c8fe670a42bc677830013e9c4aa4fa30c3e6630bf0ed13206d5a18f6813c6fb03466112aedf5d67bb5b99fe96a6dcd279916b0bce029925b63c48d41ca8a76e46c6014", @nested={0x28, 0x5, 0x0, 0x1, [@nested={0x24, 0x63, 0x0, 0x1, [@nested={0x20, 0x96, 0x0, 0x1, [@typed={0x8, 0x5a, 0x0, 0x0, @str='/}!\x00'}, @nested={0x13, 0x86, 0x0, 0x1, [@typed={0xc, 0xd, 0x0, 0x0, @u64=0x6}, @generic='NV.']}]}]}]}]}]}, 0xfc}, 0x1, 0x0, 0x0, 0x40000}, 0x50) (async)
setitimer$auto(0x2, &(0x7f0000000040)={{0x0, 0x5}, {0x0, 0x8}}, 0x0)
unshare$auto(0x40000080)
unshare$auto(0x4)
socket(0xa, 0x3, 0x100) (async)
setitimer$auto(0x2, 0x0, 0x0)

program crashed: WARNING in ip6mr_free_table
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-setitimer$auto-unshare$auto-unshare$auto-socket
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x6) (async, rerun: 32)
r1 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)={0xfc, r1, 0x1, 0x70bd2d, 0x25dfdbfe, {}, [@ETHTOOL_A_LINKMODES_OURS={0xe6, 0x3, 0x0, 0x1, [@typed={0x8, 0xc0, 0x0, 0x0, @ipv4=@multicast2}, @typed={0x4, 0x2a}, @typed={0x4, 0x11}, @typed={0x8, 0x2e, 0x0, 0x0, @fd=r0}, @generic="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32dd7c33b14cc842bc1e2a5da4203e64ceaa9db5223aa655b6313c011b3e73a75f1aa1f7b2ea43344b15bd494886e355cf6d92c8fe670a42bc677830013e9c4aa4fa30c3e6630bf0ed13206d5a18f6813c6fb03466112aedf5d67bb5b99fe96a6dcd279916b0bce029925b63c48d41ca8a76e46c6014", @nested={0x28, 0x5, 0x0, 0x1, [@nested={0x24, 0x63, 0x0, 0x1, [@nested={0x20, 0x96, 0x0, 0x1, [@typed={0x8, 0x5a, 0x0, 0x0, @str='/}!\x00'}, @nested={0x13, 0x86, 0x0, 0x1, [@typed={0xc, 0xd, 0x0, 0x0, @u64=0x6}, @generic='NV.']}]}]}]}]}]}, 0xfc}, 0x1, 0x0, 0x0, 0x40000}, 0x50) (async)
setitimer$auto(0x2, &(0x7f0000000040)={{0x0, 0x5}, {0x0, 0x8}}, 0x0)
unshare$auto(0x40000080)
unshare$auto(0x4)
socket(0xa, 0x3, 0x100) (async)

program crashed: WARNING: locking bug in __set_page_owner
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-setitimer$auto-unshare$auto-unshare$auto
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x6) (async, rerun: 32)
r1 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)={0xfc, r1, 0x1, 0x70bd2d, 0x25dfdbfe, {}, [@ETHTOOL_A_LINKMODES_OURS={0xe6, 0x3, 0x0, 0x1, [@typed={0x8, 0xc0, 0x0, 0x0, @ipv4=@multicast2}, @typed={0x4, 0x2a}, @typed={0x4, 0x11}, @typed={0x8, 0x2e, 0x0, 0x0, @fd=r0}, @generic="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32dd7c33b14cc842bc1e2a5da4203e64ceaa9db5223aa655b6313c011b3e73a75f1aa1f7b2ea43344b15bd494886e355cf6d92c8fe670a42bc677830013e9c4aa4fa30c3e6630bf0ed13206d5a18f6813c6fb03466112aedf5d67bb5b99fe96a6dcd279916b0bce029925b63c48d41ca8a76e46c6014", @nested={0x28, 0x5, 0x0, 0x1, [@nested={0x24, 0x63, 0x0, 0x1, [@nested={0x20, 0x96, 0x0, 0x1, [@typed={0x8, 0x5a, 0x0, 0x0, @str='/}!\x00'}, @nested={0x13, 0x86, 0x0, 0x1, [@typed={0xc, 0xd, 0x0, 0x0, @u64=0x6}, @generic='NV.']}]}]}]}]}]}, 0xfc}, 0x1, 0x0, 0x0, 0x40000}, 0x50) (async)
setitimer$auto(0x2, &(0x7f0000000040)={{0x0, 0x5}, {0x0, 0x8}}, 0x0)
unshare$auto(0x40000080)
unshare$auto(0x4)

program crashed: WARNING in ip6mr_free_table
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-setitimer$auto-unshare$auto
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x6) (async, rerun: 32)
r1 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)={0xfc, r1, 0x1, 0x70bd2d, 0x25dfdbfe, {}, [@ETHTOOL_A_LINKMODES_OURS={0xe6, 0x3, 0x0, 0x1, [@typed={0x8, 0xc0, 0x0, 0x0, @ipv4=@multicast2}, @typed={0x4, 0x2a}, @typed={0x4, 0x11}, @typed={0x8, 0x2e, 0x0, 0x0, @fd=r0}, @generic="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32dd7c33b14cc842bc1e2a5da4203e64ceaa9db5223aa655b6313c011b3e73a75f1aa1f7b2ea43344b15bd494886e355cf6d92c8fe670a42bc677830013e9c4aa4fa30c3e6630bf0ed13206d5a18f6813c6fb03466112aedf5d67bb5b99fe96a6dcd279916b0bce029925b63c48d41ca8a76e46c6014", @nested={0x28, 0x5, 0x0, 0x1, [@nested={0x24, 0x63, 0x0, 0x1, [@nested={0x20, 0x96, 0x0, 0x1, [@typed={0x8, 0x5a, 0x0, 0x0, @str='/}!\x00'}, @nested={0x13, 0x86, 0x0, 0x1, [@typed={0xc, 0xd, 0x0, 0x0, @u64=0x6}, @generic='NV.']}]}]}]}]}]}, 0xfc}, 0x1, 0x0, 0x0, 0x40000}, 0x50) (async)
setitimer$auto(0x2, &(0x7f0000000040)={{0x0, 0x5}, {0x0, 0x8}}, 0x0)
unshare$auto(0x40000080)

program crashed: WARNING in ip6mr_free_table
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-setitimer$auto
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x6) (async, rerun: 32)
r1 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)={0xfc, r1, 0x1, 0x70bd2d, 0x25dfdbfe, {}, [@ETHTOOL_A_LINKMODES_OURS={0xe6, 0x3, 0x0, 0x1, [@typed={0x8, 0xc0, 0x0, 0x0, @ipv4=@multicast2}, @typed={0x4, 0x2a}, @typed={0x4, 0x11}, @typed={0x8, 0x2e, 0x0, 0x0, @fd=r0}, @generic="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32dd7c33b14cc842bc1e2a5da4203e64ceaa9db5223aa655b6313c011b3e73a75f1aa1f7b2ea43344b15bd494886e355cf6d92c8fe670a42bc677830013e9c4aa4fa30c3e6630bf0ed13206d5a18f6813c6fb03466112aedf5d67bb5b99fe96a6dcd279916b0bce029925b63c48d41ca8a76e46c6014", @nested={0x28, 0x5, 0x0, 0x1, [@nested={0x24, 0x63, 0x0, 0x1, [@nested={0x20, 0x96, 0x0, 0x1, [@typed={0x8, 0x5a, 0x0, 0x0, @str='/}!\x00'}, @nested={0x13, 0x86, 0x0, 0x1, [@typed={0xc, 0xd, 0x0, 0x0, @u64=0x6}, @generic='NV.']}]}]}]}]}]}, 0xfc}, 0x1, 0x0, 0x0, 0x40000}, 0x50) (async)
setitimer$auto(0x2, &(0x7f0000000040)={{0x0, 0x5}, {0x0, 0x8}}, 0x0)

program did not crash
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-syz_genetlink_get_family_id$auto_ethtool-sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET-unshare$auto
detailed listing:
executing program 0:
r0 = socket(0x10, 0x3, 0x6) (async, rerun: 32)
r1 = syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
sendmsg$auto_ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)={0xfc, r1, 0x1, 0x70bd2d, 0x25dfdbfe, {}, [@ETHTOOL_A_LINKMODES_OURS={0xe6, 0x3, 0x0, 0x1, [@typed={0x8, 0xc0, 0x0, 0x0, @ipv4=@multicast2}, @typed={0x4, 0x2a}, @typed={0x4, 0x11}, @typed={0x8, 0x2e, 0x0, 0x0, @fd=r0}, @generic="d152e64e22695352dd73864415aa8a78c65e6ab752fb4d469a47a092ae7d5061cdd9690cac4138553ecfbb1b32dd7c33b14cc842bc1e2a5da4203e64ceaa9db5223aa655b6313c011b3e73a75f1aa1f7b2ea43344b15bd494886e355cf6d92c8fe670a42bc677830013e9c4aa4fa30c3e6630bf0ed13206d5a18f6813c6fb03466112aedf5d67bb5b99fe96a6dcd279916b0bce029925b63c48d41ca8a76e46c6014", @nested={0x28, 0x5, 0x0, 0x1, [@nested={0x24, 0x63, 0x0, 0x1, [@nested={0x20, 0x96, 0x0, 0x1, [@typed={0x8, 0x5a, 0x0, 0x0, @str='/}!\x00'}, @nested={0x13, 0x86, 0x0, 0x1, [@typed={0xc, 0xd, 0x0, 0x0, @u64=0x6}, @generic='NV.']}]}]}]}]}]}, 0xfc}, 0x1, 0x0, 0x0, 0x40000}, 0x50) (async)
unshare$auto(0x40000080)

program crashed: WARNING in ip6mr_free_table
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-syz_genetlink_get_family_id$auto_ethtool-unshare$auto
detailed listing:
executing program 0:
socket(0x10, 0x3, 0x6) (async, rerun: 32)
syz_genetlink_get_family_id$auto_ethtool(&(0x7f0000000040), 0xffffffffffffffff) (rerun: 32)
unshare$auto(0x40000080)

program crashed: WARNING in ip6mr_free_table
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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-unshare$auto
detailed listing:
executing program 0:
socket(0x10, 0x3, 0x6) (async, rerun: 32)
unshare$auto(0x40000080)

program crashed: WARNING in ip6mr_free_table
testing program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): unshare$auto
detailed listing:
executing program 0:
unshare$auto(0x40000080)

program crashed: WARNING in ip6mr_free_table
extracting C reproducer
testing compiled C program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): unshare$auto
program crashed: WARNING in ip6mr_free_table
simplifying C reproducer
testing compiled C program (duration=53.113019823s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare$auto
program did not crash
testing compiled C program (duration=53.113019823s, {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}}): unshare$auto
program did not crash
testing compiled C program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare$auto
program did not crash
testing compiled C program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): unshare$auto
program crashed: WARNING in ip6mr_free_table
testing compiled C program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare$auto
program crashed: WARNING in ip6mr_free_table
testing compiled C program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): unshare$auto
program crashed: WARNING in ip6mr_free_table
testing compiled C program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare$auto
program crashed: WARNING in ip6mr_free_table
testing compiled C program (duration=53.113019823s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): unshare$auto
program crashed: WARNING in ip6mr_free_table
reproducing took 28m46.630768601s
repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5843 at net/ipv6/ip6mr.c:419 ip6mr_free_table+0xbd/0x120 net/ipv6/ip6mr.c:419
Modules linked in:
CPU: 1 UID: 0 PID: 5843 Comm: syz-executor151 Not tainted 6.13.0-rc1-syzkaller-00036-g5076001689e4 #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 e4 3f bb f7 90 <0f> 0b 90 e8 db 3f bb f7 48 8d 7b 38 e8 b2 17 a8 f7 48 89 df be 0f
RSP: 0018:ffffc90003857bd8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88807b248000 RCX: ffffffff89de0064
RDX: ffff88807b210000 RSI: ffffffff89de009c RDI: ffff888035094b40
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: ffff888035093c80
R13: ffff88807b248000 R14: ffff88807b248008 R15: dead000000000100
FS:  00007f0ccedb86c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555566c1cce8 CR3: 0000000033caa000 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
 unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228
 ksys_unshare+0x45d/0xa40 kernel/fork.c:3334
 __do_sys_unshare kernel/fork.c:3405 [inline]
 __se_sys_unshare kernel/fork.c:3403 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3403
 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: 0033:0x7f0ccedfd2d9
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:00007f0ccedb8238 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f0ccee87308 RCX: 00007f0ccedfd2d9
RDX: 00007f0ccedd98c6 RSI: 0000000000000000 RDI: 0000000040000080
RBP: 00007f0ccee87300 R08: 00007fff50c78907 R09: 00007f0ccedb86c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0ccee8730c
R13: 0000000000000000 R14: 00007fff50c78820 R15: 00007fff50c78908
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5843 at net/ipv6/ip6mr.c:419 ip6mr_free_table+0xbd/0x120 net/ipv6/ip6mr.c:419
Modules linked in:
CPU: 1 UID: 0 PID: 5843 Comm: syz-executor151 Not tainted 6.13.0-rc1-syzkaller-00036-g5076001689e4 #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 e4 3f bb f7 90 <0f> 0b 90 e8 db 3f bb f7 48 8d 7b 38 e8 b2 17 a8 f7 48 89 df be 0f
RSP: 0018:ffffc90003857bd8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88807b248000 RCX: ffffffff89de0064
RDX: ffff88807b210000 RSI: ffffffff89de009c RDI: ffff888035094b40
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: ffff888035093c80
R13: ffff88807b248000 R14: ffff88807b248008 R15: dead000000000100
FS:  00007f0ccedb86c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555566c1cce8 CR3: 0000000033caa000 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
 unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228
 ksys_unshare+0x45d/0xa40 kernel/fork.c:3334
 __do_sys_unshare kernel/fork.c:3405 [inline]
 __se_sys_unshare kernel/fork.c:3403 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3403
 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: 0033:0x7f0ccedfd2d9
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:00007f0ccedb8238 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f0ccee87308 RCX: 00007f0ccedfd2d9
RDX: 00007f0ccedd98c6 RSI: 0000000000000000 RDI: 0000000040000080
RBP: 00007f0ccee87300 R08: 00007fff50c78907 R09: 00007f0ccedb86c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0ccee8730c
R13: 0000000000000000 R14: 00007fff50c78820 R15: 00007fff50c78908
 </TASK>