Extracting prog: 6m2.897423753s
Minimizing prog: 29m34.023144257s
Simplifying prog options: 0s
Extracting C: 2m17.982429249s
Simplifying C: 10m39.041234518s


extracting reproducer from 28 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program did not crash
single: failed to extract reproducer
bisect: bisecting 28 programs with base timeout 30s
testing program (duration=37s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [15, 7, 4, 4, 8, 5, 5, 6, 10, 10, 4, 29, 19, 4, 3, 2, 16, 11, 7, 16, 10, 17, 5, 13, 8, 16, 3, 3]
detailed listing:
executing program 2:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f00000000c0)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./proc/fs/nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000180)='./proc/fs/nfsd\x00', &(0x7f00000001c0)='nfsd\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./proc/fs/nfsd/ports\x00', 0x1, 0x0)
write(r1, &(0x7f0000000280)='tcp 2049\n\x00', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc/fs/nfsd/threads\x00', 0x1, 0x0)
write(r2, &(0x7f0000000380)='1\n\x00', 0x2)
r3 = socket$inet_udp(0x2, 0x2, 0x0)
sendto$inet(r3, &(0x7f0000000100)="000000010000000000000002000186a30000000300000000000000010000002000"/64, 0x40, 0x0, &(0x7f0000000200)={0x2, 0x7f1, @loopback}, 0x10)
r4 = openat(0xffffffffffffff9c, &(0x7f00000003c0)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0)
read(r4, &(0x7f0000000300)=""/100, 0x64)
sendmsg$nl_generic(r0, &(0x7f0000000400)={0x0, 0x0, &(0x7f0000000500)={&(0x7f0000000600)={0x14, 0x25, 0x301, 0x0, 0x0, {0x2}}, 0x14}}, 0x0)
sendmsg$nl_generic(r0, &(0x7f0000000400)={0x0, 0x0, &(0x7f0000000500)={&(0x7f0000000600)={0x14, 0x25, 0x301, 0x0, 0x0, {0x2}}, 0x14}}, 0x0)
executing program 2:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./nfsd/threads\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='0\n', 0x2)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./nfsd/portlist\x00', 0x1, 0x0)
write(r1, &(0x7f0000000180)='2049\n', 0x5)
write(r0, &(0x7f0000000100)='1\n', 0x2)
executing program 2:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./proc/net/rpc/auth.rpcsec.context/channel\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='\\x01000000 2000000000 0 0 0 krb5 \\x00000000ffffffff0000000000000000120000000000000000000000000000000000000000000000000000000000000000000000 client\n', 0x96)
executing program 32:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./proc/net/rpc/auth.rpcsec.context/channel\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='\\x01000000 2000000000 0 0 0 krb5 \\x00000000ffffffff0000000000000000120000000000000000000000000000000000000000000000000000000000000000000000 client\n', 0x96)
executing program 1:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./pipe\x00', 0x1ff)
mount(&(0x7f0000000100)=@filename='none\x00', &(0x7f0000000200)='./pipe\x00', &(0x7f0000000300)='rpc_pipefs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000400)='./pipe/gssd/clntXX/gssd\x00', 0x2, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000500)='./mnt\x00', 0x1ff)
mount(&(0x7f0000000600)=@filename='127.000.000.001:/export\x00', &(0x7f0000000700)='./mnt\x00', &(0x7f0000000800)='nfs\x00', 0x0, &(0x7f0000000900)='sec=krb5,vers=3,proto=tcp\x00')
r0 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./pipe/gssd/clnt0/gssd\x00', 0x2, 0x0)
read(r0, &(0x7f0000000b00)=""/100, 0x64)
write(r0, &(0x7f0000000c00)='\x00'/12, 0xc)
executing program 1:
unshare(0x40000000)
unshare(0x40000000)
unshare(0x40000000)
unshare(0x40000000)
nanosleep(&(0x7f0000000000)={0x0, 0x5f5e100}, 0x0)
executing program 0:
r0 = socket$tipc(0x1e, 0x2, 0x0)
bind$tipc(r0, &(0x7f0000000000)=@nameseq={0x1e, 0x1, 0x0, {0x1000, 0x1, 0x10}}, 0x10)
r1 = socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$tipc(&(0x7f00000000c0), r1)
sendmsg$TIPC_CMD_SHOW_NAME_TABLE(r1, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000280)={0x30, r2, 0x1, 0x0, 0x100000, {{}, {}, {0x14, 0x19, {0x1000, 0x1, 0x10, 0x80000000}}}}, 0x30}, 0x1, 0x0, 0x0, 0x4080}, 0x1004)
executing program 0:
r0 = socket$inet_sctp(0x2, 0x1, 0x84)
bind(r0, &(0x7f0000000000)=@in={0x2, 0x4e20, @empty}, 0x10)
listen(r0, 0x5)
r1 = socket$inet_sctp(0x2, 0x1, 0x84)
setsockopt$inet_sctp_SCTP_INITMSG(r1, 0x84, 0x2, &(0x7f0000000200)={0x10, 0x10}, 0x8)
connect(r1, &(0x7f0000000100)=@in={0x2, 0x4e20, @loopback}, 0x10)
executing program 0:
r0 = socket$rxrpc(0x21, 0x2, 0x2)
bind$rxrpc(r0, &(0x7f0000000000)=@in4={0x21, 0x1, 0x2, 0x10, {0x2, 0x1234, @loopback}}, 0x24)
listen(r0, 0x5)
r1 = socket$rxrpc(0x21, 0x2, 0x2)
sendmsg(r1, &(0x7f0000000100)={&(0x7f0000000080)=@rxrpc=@in4={0x21, 0x1, 0x2, 0x10, {0x2, 0x1234, @loopback}}, 0x80, &(0x7f0000000200)=[{&(0x7f0000000250)='hello', 0x5}], 0x1, &(0x7f0000000300)=[{0x18, 0x110, 0x1, "0100000000000000"}], 0x18}, 0x0)
nanosleep(&(0x7f0000000400)={0x0, 0x5f5e100}, 0x0)
sendmsg(r1, &(0x7f0000000100)={&(0x7f0000000080)=@rxrpc=@in4={0x21, 0x1, 0x2, 0x10, {0x2, 0x1234, @loopback}}, 0x80, &(0x7f0000000200)=[{&(0x7f0000000250)='abort', 0x5}], 0x1, &(0x7f0000000300)=[{0x18, 0x110, 0x1, "0100000000000000"}, {0x18, 0x10f, 0x1, "0100000000000000"}], 0x30}, 0x0)
shutdown(r0, 0x2)
close(r0)
nanosleep(&(0x7f0000000400)={0xb}, 0x0)
executing program 4:
r0 = socket$rxrpc(0x21, 0x2, 0x2)
bind$rxrpc(r0, &(0x7f0000000000)=@in4={0x21, 0x1, 0x2, 0x10, {0x2, 0x1234, @loopback}}, 0x24)
listen(r0, 0x5)
r1 = socket$rxrpc(0x21, 0x2, 0x2)
sendmsg(r1, &(0x7f0000000100)={&(0x7f0000000080)=@rxrpc=@in4={0x21, 0x1, 0x2, 0x10, {0x2, 0x1234, @loopback}}, 0x80, &(0x7f0000000200)=[{&(0x7f0000000250)='hello', 0x5}], 0x1, &(0x7f0000000300)=[{0x18, 0x110, 0x1, "0100000000000000"}], 0x18}, 0x8000)
nanosleep(&(0x7f0000000400)={0x0, 0x5f5e100}, 0x0)
sendmsg(r1, &(0x7f0000000100)={&(0x7f0000000080)=@rxrpc=@in4={0x21, 0x1, 0x2, 0x10, {0x2, 0x1234, @loopback}}, 0x80, &(0x7f0000000200)=[{&(0x7f0000000250)}], 0x1, &(0x7f0000000300)=[{0x18, 0x110, 0x1, "0100000000000000"}, {0x18, 0x110, 0x2, "01000000"}], 0x30}, 0x0)
shutdown(r0, 0x2)
close(r0)
nanosleep(&(0x7f0000000400)={0x0, 0x5f5e100}, 0x0)
executing program 0:
r0 = fsopen(&(0x7f0000000000)='nfs\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000040)='source\x00', &(0x7f0000000080)='127.0.0.1:/export\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f00000000c0)='addr\x00', &(0x7f0000000100)='127.0.0.1\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0)
executing program 0:
r0 = socket$inet(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000200)={0x2, 0x801, @empty}, 0x10)
getsockname(r0, &(0x7f0000000104), &(0x7f0000000120)=0x10)
r1 = socket$inet(0x2, 0x1, 0x0)
bind$inet(r1, &(0x7f0000000000)={0x2, 0x801, @loopback}, 0x10)
listen(r1, 0x10)
mkdirat(0xffffffffffffff9c, &(0x7f0000001400)='./mnt\x00', 0x1ff)
r2 = fsopen(&(0x7f0000000400)='nfs\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r2, 0x1, &(0x7f0000000500)='source\x00', &(0x7f0000000600)='127.0.0.1:/export\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r2, 0x1, &(0x7f0000000700)='addr\x00', &(0x7f0000000800)='127.0.0.1\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r2, 0x1, &(0x7f0000000900)='nfsvers\x00', &(0x7f0000000a00)='3\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r2, 0x1, &(0x7f0000000b00)='proto\x00', &(0x7f0000000c00)='tcp\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r2, 0x1, &(0x7f0000000d00)='port\x00', &(0x7f0000000e00)='2049\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r2, 0x1, &(0x7f0000000f00)='mountport\x00', &(0x7f0000001000)='2049\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r2, 0x1, &(0x7f0000001100)='mountproto\x00', &(0x7f0000001200)='tcp\x00', 0x0)
fsconfig$FSCONFIG_SET_FLAG(r2, 0x0, &(0x7f0000001300)='ro\x00', 0x0, 0x0)
syz_clone(0x511, 0x0, 0x0, 0x0, 0x0, 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r2, 0x6, 0x0, 0x0, 0x0)
mount$nfs(&(0x7f0000000500)='127.0.0.1:/export\x00', &(0x7f0000001400)='./mnt\x00', &(0x7f0000000400), 0x0, &(0x7f0000000600)=ANY=[@ANYBLOB='addr=127.0.0.1,nfsvers=3,proto=tcp,port=2049,mountport=2049,nolock\x00'])
r3 = accept4$inet(r1, 0x0, 0x0, 0x0)
recvfrom$inet(r3, &(0x7f0000000100)=""/8, 0x8, 0x0, 0x0, 0x0)
write(r3, &(0x7f0000000100), 0x40)
recvfrom$inet(r3, &(0x7f0000000100)=""/8, 0x8, 0x0, 0x0, 0x0)
write(r3, &(0x7f0000000100), 0x40)
recvfrom$inet(r3, &(0x7f0000000100)=""/8, 0x8, 0x0, 0x0, 0x0)
write(r3, &(0x7f0000000100), 0x40)
r4 = fsmount(r2, 0x0, 0x0)
move_mount(r4, &(0x7f0000001500)='\x00', 0xffffffffffffff9c, &(0x7f0000001400)='./mnt\x00', 0x4)
getxattr(&(0x7f0000001400)='./mnt/file\x00', &(0x7f0000001600)=@known='system.posix_acl_access\x00', &(0x7f0000001700)=""/256, 0x100)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(&(0x7f0000000000)=@filename='none\x00', &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(&(0x7f0000000100)=@filename='none\x00', &(0x7f0000000140)='./sys\x00', &(0x7f0000000180)='sysfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./debug\x00', 0x1ff)
mount(&(0x7f0000000200)=@filename='none\x00', &(0x7f0000000240)='./debug\x00', &(0x7f0000000280)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/kernel/slab/skbuff_head_cache/failslab\x00', 0x1, 0x0)
write(r0, &(0x7f0000000450)='1', 0x1)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./debug/failslab/cache-filter\x00', 0x1, 0x0)
write(r1, &(0x7f0000000550)='1', 0x1)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./debug/failslab/probability\x00', 0x1, 0x0)
write(r2, &(0x7f0000000650)='100', 0x3)
socket$packet(0x11, 0x3, 0x300)
socket$packet(0x11, 0x3, 0x300)
r3 = socket$inet_udp(0x2, 0x2, 0x0)
sendto$inet(r3, &(0x7f0000000700)="00112233445566778899aabbccddeeff", 0x10, 0x0, &(0x7f0000000750)={0x2, 0x1234, @loopback}, 0x10)
r4 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/self/fail-nth\x00', 0x1, 0x0)
write(r4, &(0x7f0000000850)='4', 0x1)
sendto$inet(r3, &(0x7f0000000700)="00112233445566778899aabbccddeeff", 0x10, 0x0, &(0x7f0000000750)={0x2, 0x1234, @loopback}, 0x10)
executing program 3:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./sys\x00', &(0x7f0000000300)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/class/net/bridge0/bridge/root_port\x00', 0x0, 0x0)
read(r0, &(0x7f0000000500), 0x100)
executing program 3:
r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$NFT_BATCH(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000800)={&(0x7f0000000200)={{0x14, 0x10, 0x0, 0x0, 0x0, {0x2}}, [@NFT_MSG_NEWTABLE={0x18, 0x0, 0xa, 0x0, 0x0, 0x0, {0x2}, [@NFTA_TABLE_NAME={0x9, 0x1, 'syz0\x00'}]}, @NFT_MSG_NEWCHAIN={0x1c, 0x1, 0xa, 0x0, 0x0, 0x0, {0x2}, [@NFTA_CHAIN_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_CHAIN_NAME={0x9, 0x2, 'syz1\x00'}]}, @NFT_MSG_NEWCHAIN={0x1c, 0x1, 0xa, 0x0, 0x0, 0x0, {0x2}, [@NFTA_CHAIN_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_CHAIN_NAME={0x9, 0x3, 'syz2\x00'}]}, @NFT_MSG_NEWRULE={0x6c, 0x6, 0xa, 0x401, 0x0, 0x0, {0x2}, [@NFTA_RULE_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_RULE_CHAIN={0x9, 0x2, 'syz1\x00'}, @NFTA_RULE_EXPRESSIONS={0x40, 0x4, 0x0, 0x1, [{0x3c, 0x1, 0x0, 0x1, @immediate={{0xe}, @val={0x28, 0x2, 0x0, 0x1, [@NFTA_IMMEDIATE_DREG={0x8}, @NFTA_IMMEDIATE_DATA={0x1c, 0x2, 0x0, 0x1, [@NFTA_DATA_VERDICT={0x18, 0x2, 0x0, 0x1, [@NFTA_VERDICT_CODE={0x8, 0x1, 0x0, 0x1, 0xfffffffffffffffd}, @NFTA_VERDICT_CHAIN={0x9, 0x2, 'syz2\x00'}]}]}]}}}]}]}], {0x14, 0x11, 0x0, 0x0, 0x0, {0x2}}}, 0xe4}}, 0x0)
sendmsg$NFT_BATCH(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000500)={{0x14, 0x10, 0x0, 0x0, 0x0, {0x2}}, [@NFT_MSG_DELRULE={0x2c, 0x6, 0xa, 0x201, 0x0, 0x0, {0x2}, [@NFTA_RULE_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_RULE_CHAIN={0x9, 0x2, 'syz1\x00'}]}], {0x14, 0x11, 0x0, 0x0, 0x0, {0x2}}}, 0x54}}, 0x0)
executing program 4:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
sendmsg$nl_generic(r0, &(0x7f0000000000)={&(0x7f0000000100), 0xc, &(0x7f0000000020)={&(0x7f0000000040)={0x20, 0x10, 0x1, 0x0, 0x0, {0x3}, [@typed={0xb, 0x2, 0x0, 0x0, @str='nlctrl\x00'}]}, 0x20}}, 0x0)
executing program 3:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(&(0x7f00000000c0)=@filename='./rpc_pipefs\x00', 0x0, &(0x7f0000000140)='rpc_pipefs\x00', 0x0, 0x0)
mount(&(0x7f00000001c0)=@filename='./nfsd\x00', &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000240)='nfsd\x00', 0x0, 0x0)
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/versions\x00', 0x1, 0x0)
write(r1, &(0x7f0000000300)='-2 -3\n\x00', 0x6)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./nfsd/portlist\x00', 0x1, 0x0)
write(r2, &(0x7f0000000380)='4\n\x00', 0x2)
write(0xffffffffffffffff, &(0x7f0000000400)='1\n\x00', 0x2)
r3 = socket$inet_tcp(0x2, 0x1, 0x0)
write(r3, &(0x7f0000000480)="80000040000000010000000000000002000186a30000000400000001000000010000001400000001000000000000000000000000000000000000000000000000000000000000000100000018", 0x44)
mkdirat(0xffffffffffffff9c, &(0x7f0000000500)='./proc\x00', 0x1ff)
mount(&(0x7f0000000540)=@filename='./proc\x00', &(0x7f0000000580)='./proc\x00', &(0x7f00000005c0)='proc\x00', 0x0, 0x0)
r4 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x1, 0x0)
write(r4, &(0x7f0000000640)='nfsd 127.0.0.1 999999999 anonymous\n\x00', 0x23)
executing program 3:
r0 = socket$inet_sctp(0x2, 0x1, 0x84)
r1 = socket$inet_sctp(0x2, 0x1, 0x84)
bind(r0, &(0x7f0000000000)=@in={0x2, 0x4e20, @loopback}, 0x10)
listen(r0, 0x5)
bind(r1, &(0x7f0000000100)=@in={0x2, 0x0, @loopback}, 0x10)
connect(r1, &(0x7f0000000200)=@in={0x2, 0x4e20, @loopback}, 0x10)
accept(r0, 0x0, 0x0)
setsockopt$inet_sctp_SCTP_ASSOCINFO(r1, 0x84, 0x1, &(0x7f0000000300), 0x14)
setsockopt$inet_sctp_SCTP_RTOINFO(r1, 0x84, 0x0, &(0x7f0000000400)={0x0, 0x1, 0xa, 0x1}, 0x10)
setsockopt$inet_sctp_SCTP_PEER_ADDR_PARAMS(r1, 0x84, 0x9, &(0x7f0000000500)={0x0, @in={{0x2, 0x4e20, @loopback}}, 0x1, 0x0, 0x0, 0x0, 0x1}, 0x9c)
nanosleep(&(0x7f0000000600)={0x0, 0x11e1a300}, 0x0)
executing program 4:
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'dvmrp0\x00', 0x1})
ioctl$TUNSETLINK(r0, 0x400454cd, 0x10f)
r1 = socket(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000200)={'dvmrp0\x00', 0x1})
r2 = socket(0x9, 0x5, 0x0)
ioctl$SIOCX25SSUBSCRIP(r2, 0x89e1, &(0x7f0000000100)={'dvmrp0\x00', 0x0, 0x1})
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000080)=@filename='none\x00', &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, &(0x7f0000000140)={0x2, 0x801, @loopback}, 0x10)
listen(r0, 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/portlist\x00', 0x1, 0x0)
write(r1, &(0x7f00000001c0)='3\n', 0x2)
write(r1, &(0x7f0000000200)='4\n', 0x2)
write(r1, &(0x7f0000000240)='5\n', 0x2)
write(r1, &(0x7f0000000280)='6\n', 0x2)
r2 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/versions\x00', 0x1, 0x0)
write(r2, &(0x7f0000000300)='-2 -3\n', 0x6)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./nfsd/threads\x00', 0x1, 0x0)
write(r3, &(0x7f0000000380)='1\n', 0x2)
r4 = socket$inet_tcp(0x2, 0x1, 0x0)
connect$inet(r4, &(0x7f00000003c0)={0x2, 0x801, @loopback}, 0x10)
executing program 4:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = socket$xdp(0x2c, 0x3, 0x0)
setsockopt$XDP_UMEM_REG(r1, 0x11b, 0x4, &(0x7f0000000340)={&(0x7f0000000000)=""/65536, 0x10000, 0x800}, 0x20)
setsockopt$XDP_TX_RING(r1, 0x11b, 0x3, &(0x7f0000000080)=0x10, 0x4)
setsockopt$XDP_UMEM_COMPLETION_RING(r1, 0x11b, 0x6, &(0x7f0000000080)=0x10, 0x4)
setsockopt$XDP_UMEM_FILL_RING(r1, 0x11b, 0x5, &(0x7f0000000300)=0x10, 0x4)
ioctl$ifreq_SIOCGIFINDEX_batadv_hard(r0, 0x8933, &(0x7f0000000040)={'batadv_slave_0\x00', <r2=>0x0})
bind$xdp(r1, &(0x7f0000000100)={0x2c, 0x2, r2, 0x0, 0x0}, 0x10)
mmap$xdp(0x0, 0x1000, 0x3, 0x11, r1, 0x80000000)
sendmsg$xdp(r1, &(0x7f0000000200), 0x40)
executing program 3:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000000), 0xffffffffffffffff)
sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)={0x24, r1, 0x1, 0x0, 0x0, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x2, 0x8}, @MPTCP_PM_ATTR_SUBFLOWS={0x8, 0x3, 0x8}]}, 0x24}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./proc\x00', &(0x7f0000000240)='proc\x00', 0x0, 0x0)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000280)='./proc/sys/net/mptcp/add_addr_timeout\x00', 0x1, 0x0)
write(r2, &(0x7f00000002c0)='1\n\x00', 0x2)
r3 = socket$inet_mptcp(0x2, 0x1, 0x106)
bind$inet(r3, &(0x7f0000000300)={0x2, 0x1f40, @loopback}, 0x10)
listen(r3, 0x5)
r4 = socket$inet_mptcp(0x2, 0x1, 0x106)
connect$inet(r4, &(0x7f0000000300)={0x2, 0x1f40, @loopback}, 0x10)
r5 = accept(r3, 0x0, 0x0)
write(r4, &(0x7f0000000400)="0123456789", 0xa)
read(r5, &(0x7f0000000500), 0xa)
sendmsg$MPTCP_PM_CMD_ADD_ADDR(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000180)={0x38, r1, 0x1, 0x0, 0x0, {}, [@MPTCP_PM_ATTR_ADDR={0x24, 0x1, 0x0, 0x1, [@MPTCP_PM_ADDR_ATTR_ADDR4={0x8, 0x3, @private=0xa010100}, @MPTCP_PM_ADDR_ATTR_FAMILY={0x6, 0x1, 0x2}, @MPTCP_PM_ADDR_ATTR_FLAGS={0x8, 0x6, 0x1}, @MPTCP_PM_ADDR_ATTR_ID={0x5, 0x2, 0x2}]}]}, 0x38}}, 0x0)
nanosleep(&(0x7f0000000700)={0x3}, 0x0)
executing program 1:
r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$NFQNL_MSG_CONFIG(r0, &(0x7f0000000100)={&(0x7f0000000000), 0x0, &(0x7f0000000140)={&(0x7f0000000180)={0x28, 0x2, 0x3, 0x0, 0x0, 0x0, {0x2}, [@NFQA_CFG_CMD={0x8, 0x1, {0x1, 0x0, 0x2}}, @NFQA_CFG_PARAMS={0x9, 0x2, {0x1000, 0x2}}]}, 0x28}}, 0x0)
sendmsg$NFT_BATCH(r0, &(0x7f00000001c0)={&(0x7f0000000000), 0x0, &(0x7f0000000240)={&(0x7f0000000340)={{0x14, 0x10, 0x1, 0x0, 0x0, {0x2, 0x0, 0x2}}, [@NFT_MSG_NEWTABLE={0x20, 0x0, 0x2, 0x201, 0x0, 0x0, {0x2}, [@NFTA_TABLE_NAME={0x9, 0x1, 'syz0\x00'}]}, @NFT_MSG_NEWCHAIN={0x4c, 0x3, 0x2, 0x201, 0x0, 0x0, {0x2}, [@NFTA_CHAIN_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_CHAIN_NAME={0x9, 0x3, 'syz0\x00'}, @NFTA_CHAIN_HOOK={0x14, 0x4, 0x0, 0x1, [@NFTA_HOOK_HOOKNUM={0x8, 0x1, 0x1, 0x0, 0x3}, @NFTA_HOOK_PRIORITY={0x8}]}, @NFTA_CHAIN_TYPE={0xb, 0x7, 'filter\x00'}]}, @NFT_MSG_NEWRULE={0x60, 0x6, 0x2, 0x201, 0x0, 0x0, {0x2}, [@NFTA_RULE_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_RULE_CHAIN={0x9, 0x2, 'syz0\x00'}, @NFTA_RULE_EXPRESSIONS={0x34, 0x4, 0x0, 0x1, [{0x30, 0x1, 0x0, 0x1, @target={{0xb}, @val={0x20, 0x2, 0x0, 0x1, [@NFTA_TARGET_NAME={0xc, 0x1, 'NFQUEUE\x00'}, @NFTA_TARGET_REV={0x8}, @NFTA_TARGET_INFO={0x6, 0x3, '\x00\x00'}]}}}]}]}], {0x14, 0x11, 0x1, 0x0, 0x0, {0x2, 0x0, 0x2}}}, 0xf4}}, 0x0)
r1 = socket$inet_udp(0x2, 0x2, 0x0)
sendto$inet(r1, &(0x7f0000000200)="00112233445566778899aabbccddeeff", 0x10, 0x0, &(0x7f0000000300)={0x2, 0x1234, @loopback}, 0x10)
executing program 1:
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x1002})
r1 = socket$nl_generic(0x10, 0x3, 0x10)
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000900)={'syzkaller0\x00', 0x41})
r2 = syz_genetlink_get_family_id$tipc(&(0x7f0000000080), r1)
sendmsg$TIPC_CMD_SET_NODE_ADDR(r1, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000140)={0x24, r2, 0x1, 0x0, 0x0, {{}, {}, {0x8, 0x11, 0x1000001}}}, 0x24}}, 0x0)
sendmsg$TIPC_CMD_ENABLE_BEARER(r1, &(0x7f0000000180)={0x0, 0x0, &(0x7f00000001c0)={&(0x7f0000000200)={0x38, r2, 0x1, 0x0, 0x0, {{}, {}, {0x1c, 0x17, {0x1, 0x0, @l2={'eth', 0x3a, 'syzkaller0\x00'}}}}}, 0x38}}, 0x0)
write(r0, &(0x7f0000000500)="ffffffffffff00000000000188ca2000002800000001010000010100000200"/50, 0x32)
write(r0, &(0x7f0000000600)="ffffffffffff00000000000188ca2000002800000002010000010100000200"/50, 0x32)
r3 = socket$tipc(0x1e, 0x2, 0x0)
sendmsg$tipc(r3, &(0x7f0000000400)={&(0x7f0000000300)=@name={0x1e, 0x2, 0x0, {{0x3e8, 0x1}}}, 0x10, &(0x7f0000000440)=[{&(0x7f0000000480)='hello world', 0xb}], 0x1}, 0x0)
nanosleep(&(0x7f0000000700)={0x0, 0x989680}, 0x0)
write(r0, &(0x7f0000000800)="ffffffffffff00000000000188ca200000280000000001000001010000020000000000000000000000000000000100010000", 0x32)
executing program 4:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
mmap(&(0x7f0000001000)=nil, 0x1000, 0x3, 0x32, 0xffffffff, 0x0)
r1 = userfaultfd(0x1)
ioctl$UFFDIO_API(r1, 0xc018aa3f, &(0x7f0000000100))
ioctl$UFFDIO_REGISTER(r1, 0xc020aa00, &(0x7f0000000200)={{0xfffffffffffffffd, 0x1000}, 0x1})
getsockopt$inet_tcp_buf(r0, 0x6, 0x1c, &(0x7f0000001200)=""/4, &(0x7f0000001100)=0x4) (async)
read(r1, &(0x7f0000000300), 0x20)
ioctl$UFFDIO_ZEROPAGE(r1, 0xc020aa04, &(0x7f0000000400)={{0xfffffffffffffffd, 0x1000}})
executing program 1:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(&(0x7f00000000c0)=@filename='./rpc_pipefs\x00', 0x0, &(0x7f0000000140)='rpc_pipefs\x00', 0x0, 0x0)
mount(&(0x7f00000001c0)=@filename='./nfsd\x00', &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000240)='nfsd\x00', 0x0, 0x0)
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r0, 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/versions\x00', 0x1, 0x0)
write(r1, &(0x7f0000000300)='-2 -3\n\x00', 0x6)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./nfsd/portlist\x00', 0x1, 0x0)
write(r2, &(0x7f0000000380)='4\n\x00', 0x2)
write(0xffffffffffffffff, &(0x7f0000000400)='1\n\x00', 0x2)
r3 = socket$inet_tcp(0x2, 0x1, 0x0)
write(r3, &(0x7f0000000480)="80000040000000010000000000000002000186a30000000400000001000000010000001400000001000000000000000000000000000000000000000000000000000000000000000100000018", 0x44)
mkdirat(0xffffffffffffff9c, &(0x7f0000000500)='./proc\x00', 0x1ff)
mount(&(0x7f0000000540)=@filename='./proc\x00', &(0x7f0000000580)='./proc\x00', &(0x7f00000005c0)='proc\x00', 0x0, 0x0)
r4 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x1, 0x0)
write(r4, &(0x7f0000000640)='nfsd 127.0.0.1 999999999 anonymous\n\x00', 0x23)
executing program 1:
r0 = socket(0x8, 0x2, 0x0)
openat$ppp(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl(r0, 0x40046102, &(0x7f0000000100)="0100")
executing program 3:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program did not crash
replaying the whole log did not cause a kernel crash
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, 0x0}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={0x0}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x13c, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x4c, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0x0, 0x60}}]}, 0x13c}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, 0x0, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, 0x0}, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={0x0, 0x94}}, 0x0)

program did not crash
testing program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB], 0x94}}, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
simplifying C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
testing compiled C program (duration=1m40s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
testing program (duration=1m40s, {Threaded:false Repeat:true 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
validation run: crashed=true
testing program (duration=1m40s, {Threaded:false Repeat:true 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
validation run: crashed=true
testing program (duration=1m40s, {Threaded:false Repeat:true 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000380)={&(0x7f0000000000)=@newsa={0x150, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x20, 0x20}, {@in=@loopback, 0xbe3412, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x1, 0x2}, [@algo_aead={0x60, 0x12, {{'rfc4106(gcm(aes))\x00'}, 0xa0, 0x60, "210466d38547aa140db9a200000000c538c7cb7a"}}]}, 0x150}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000500)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000000)=ANY=[@ANYBLOB="940000002900010000000000000000007f00000100000000000000000000000000be3412020032007f0000020000000000000000000000007f00000100000000000000000000000000000000000000007f0000010000000000000000000000007f000001000000000000000000000000000000000000000002002020000000000000000000000000010000000000000002000000"], 0x94}}, 0x0)

program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
validation run: crashed=true
reproducing took 56m22.542370546s
repro crashed as (corrupted=false):
=============================
WARNING: suspicious RCU usage
syzkaller #0 Not tainted
-----------------------------
net/xfrm/xfrm_user.c:1630 suspicious rcu_dereference_check() usage!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
locks held by syz.0.17/5941: 1, last CPU#1:
 #0: ffff88802abba0c8 (&net->xfrm.xfrm_cfg_mutex){+.+.}-{4:4}, at: xfrm_netlink_rcv+0x6a/0x90 net/xfrm/xfrm_user.c:3928

stack backtrace:
CPU: 1 UID: 0 PID: 5941 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 lockdep_rcu_suspicious+0x13f/0x1d0 kernel/locking/lockdep.c:6936
 xfrm_nlmsg_multicast+0x1d8/0x1f0 net/xfrm/xfrm_user.c:1630
 xfrm_send_migrate_state+0x870/0xae0 net/xfrm/xfrm_user.c:3340
 xfrm_do_migrate_state+0x1749/0x1e90 net/xfrm/xfrm_user.c:3507
 xfrm_user_rcv_msg+0x7a8/0xf30 net/xfrm/xfrm_user.c:3907
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
 xfrm_netlink_rcv+0x79/0x90 net/xfrm/xfrm_user.c:3929
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7f5/0x990 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:810
 __sock_sendmsg net/socket.c:825 [inline]
 ____sys_sendmsg+0x565/0x870 net/socket.c:2727
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2781
 __sys_sendmsg net/socket.c:2813 [inline]
 __do_sys_sendmsg net/socket.c:2818 [inline]
 __se_sys_sendmsg net/socket.c:2816 [inline]
 __x64_sys_sendmsg+0x1b7/0x290 net/socket.c:2816
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x17b/0x530 arch/x86/entry/syscall_64.c:85
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f48ba3cde99
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:00007ffda89bddf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f48ba655fa0 RCX: 00007f48ba3cde99
RDX: 0000000000000000 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007f48ba463eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f48ba655fac R14: 00007f48ba655fa0 R15: 00007f48ba655fa0
 </TASK>

final repro crashed as (corrupted=false):
=============================
WARNING: suspicious RCU usage
syzkaller #0 Not tainted
-----------------------------
net/xfrm/xfrm_user.c:1630 suspicious rcu_dereference_check() usage!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
locks held by syz.0.17/5941: 1, last CPU#1:
 #0: ffff88802abba0c8 (&net->xfrm.xfrm_cfg_mutex){+.+.}-{4:4}, at: xfrm_netlink_rcv+0x6a/0x90 net/xfrm/xfrm_user.c:3928

stack backtrace:
CPU: 1 UID: 0 PID: 5941 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 lockdep_rcu_suspicious+0x13f/0x1d0 kernel/locking/lockdep.c:6936
 xfrm_nlmsg_multicast+0x1d8/0x1f0 net/xfrm/xfrm_user.c:1630
 xfrm_send_migrate_state+0x870/0xae0 net/xfrm/xfrm_user.c:3340
 xfrm_do_migrate_state+0x1749/0x1e90 net/xfrm/xfrm_user.c:3507
 xfrm_user_rcv_msg+0x7a8/0xf30 net/xfrm/xfrm_user.c:3907
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
 xfrm_netlink_rcv+0x79/0x90 net/xfrm/xfrm_user.c:3929
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7f5/0x990 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:810
 __sock_sendmsg net/socket.c:825 [inline]
 ____sys_sendmsg+0x565/0x870 net/socket.c:2727
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2781
 __sys_sendmsg net/socket.c:2813 [inline]
 __do_sys_sendmsg net/socket.c:2818 [inline]
 __se_sys_sendmsg net/socket.c:2816 [inline]
 __x64_sys_sendmsg+0x1b7/0x290 net/socket.c:2816
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x17b/0x530 arch/x86/entry/syscall_64.c:85
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f48ba3cde99
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:00007ffda89bddf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f48ba655fa0 RCX: 00007f48ba3cde99
RDX: 0000000000000000 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007f48ba463eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f48ba655fac R14: 00007f48ba655fa0 R15: 00007f48ba655fa0
 </TASK>