Extracting prog: 5m39.379495079s
Minimizing prog: 20m52.225268658s
Simplifying prog options: 0s
Extracting C: 45.1697941s
Simplifying C: 8m24.235817732s


extracting reproducer from 30 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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 30 programs with base timeout 30s
testing program (duration=37s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [11, 6, 2, 6, 7, 8, 2, 2, 12, 6, 5, 5, 6, 2, 9, 4, 7, 3, 10, 8, 2, 11, 4, 7, 10, 5, 3, 7, 3, 3]
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f0000000040), 0x0)
nanosleep(&(0x7f0000000300)={0x0, 0x5f5e100}, 0x0)
r1 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$smc(&(0x7f0000000100), r1)
sendmsg$SMC_PNETID_ADD(r1, &(0x7f0000000080), 0x0)
r2 = socket$inet_smc(0x2b, 0x1, 0x0)
bind$inet(r2, &(0x7f0000000400)={0x2, 0x5000, @loopback}, 0x10)
listen(r2, 0x5)
r3 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r3, &(0x7f0000000500)={0x2, 0x5000, @loopback}, 0x10)
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000300)=@ipv4_newroute={0x40, 0x18, 0x1, 0x0, 0x0, {0x2, 0x18, 0x0, 0x0, 0xfe, 0x3, 0x0, 0x1}, [@RTA_DST={0x8, 0x1, @rand_addr=0xa000000}, @RTA_OIF={0x8, 0x4, 0x1}, @RTA_ENCAP_TYPE={0x6, 0x15, 0x1}, @RTA_ENCAP={0xc, 0x16, 0x0, 0x1, @MPLS_IPTUNNEL_DST={0x8, 0x1, [{0x64, 0x0, 0x1}]}}]}, 0x40}}, 0x0)
r1 = socket$inet_tcp(0x2, 0x1, 0x0)
setsockopt$inet_tcp_int(r1, 0x6, 0x2, &(0x7f0000000000)=0x64, 0x4)
connect$inet(r1, &(0x7f0000000140)={0x2, 0x1234, @rand_addr=0xa000001}, 0x10)
sendmsg$inet(r1, &(0x7f0000000180)={0x0, 0x0, &(0x7f00000001c0)=[{&(0x7f0000000400)='\x00'/1000, 0x3e8}], 0x1}, 0x0)
executing program 0:
r0 = socket$inet(0x2, 0x3, 0xff)
setsockopt(r0, 0x0, 0x40, &(0x7f0000000280)="72617700000000000000000000000000000000000000000000000000000000000900000003000000e80100000000000000000000000000005001000000000000b800000000000000000000005001000000000000030000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007000b8000000000000000000000000000000000048004354000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007000980000000000000000000000000000000000280000000000000000000000000000000000000000000000000000000000000000feffffff00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007000980000000000000000000000000000000000280000000000000000000000000000000000000000000000000000000000000000feffffff00000000", 0x248)
executing program 0:
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_IPV6_XFRM_POLICY(r0, 0x29, 0x23, &(0x7f0000000000)={{{@in6=@loopback, @in6=@loopback, 0x0, 0x0, 0x0, 0x0, 0xa, 0x0, 0x0, 0x6}, {}, {}, 0x0, 0x0, 0x1}, {{@in6=@loopback, 0x0, 0x32}, 0x2, @in6=@loopback}}, 0xa8)
bind$inet6(r0, &(0x7f0000000100)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
listen(r0, 0x5)
r1 = socket$inet6_tcp(0xa, 0x1, 0x0)
connect$inet6(r1, &(0x7f0000000200)={0xa, 0x4e23, 0x0, @loopback}, 0x1c)
executing program 0:
r0 = socket$rxrpc(0x21, 0x2, 0x2)
bind$rxrpc(r0, &(0x7f0000000000)=@in4={0x21, 0x1, 0x2, 0x10, {0x2, 0x1234, @loopback}}, 0x18)
connect$rxrpc(r0, &(0x7f0000000100)=@in4={0x21, 0x1, 0x2, 0x10, {0x2, 0x1234, @loopback}}, 0x18)
sendto$rxrpc(r0, &(0x7f0000000200)='A', 0x1, 0x0, 0x0, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
sendto$inet(r1, &(0x7f0000000300)="00000000000000000000000000000000000000000600000000000001", 0x1c, 0x0, &(0x7f0000000400)={0x2, 0x1234, @loopback}, 0x10)
nanosleep(&(0x7f0000000500)={0x0, 0x5f5e100}, 0x0)
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)={0x38, 0x1403, 0x1, 0x0, 0x0, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'veth0\x00'}}]}, 0x38}}, 0x0)
nanosleep(&(0x7f0000000100)={0x2}, 0x0)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
bind(r1, &(0x7f0000000300)=@in={0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0xaa}}, 0x10)
listen(r1, 0x5)
r2 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r2, &(0x7f0000000400)={0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0xaa}}, 0x10)
executing program 1:
r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$NFT_BATCH(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)={{0x14, 0xa, 0x1, 0x0, 0x0, {0x2, 0x0, 0x0}}, [@NFT_MSG_NEWTABLE={0x20, 0x0, 0xa, 0x401, 0x0, 0x0, {0x2}, [@NFTA_TABLE_NAME={0x0, 0x0, 'syz0\x00'}]}], {0x14, 0x11, 0x1, 0x0, 0x0, {0x2, 0x0, 0x0}}}, 0x100}}, 0x0)
executing program 4:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f0000000040)={&(0x7f0000000000), 0x0, &(0x7f0000000080)={&(0x7f00000000c0)={0x38, 0x1403, 0x1, 0x0, 0x0, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'lo\x00'}}]}, 0x38}}, 0x0)
executing program 1:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="300000000314010000000000000000000900020073797a30000000000800410072786500090033006574683000000000"], 0x30}}, 0x0)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="2c0000000314010000000000000000000900020073797a30000000000800410072786500070033006c6f0000"], 0x2c}}, 0x0)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)=ANY=[@ANYBLOB="300000000314010000000000000000000900020073797a31000000000800410073697700090033006574683000000000"], 0x30}}, 0x0)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
r2 = socket$inet_smc(0x2b, 0x1, 0x0)
bind(r1, &(0x7f0000000100)=@in={0x2, 0x2389, @loopback}, 0x10)
listen(r1, 0x5)
connect(r2, &(0x7f0000000100)=@in={0x2, 0x2389, @loopback}, 0x10)
r3 = accept(r1, 0x0, 0x0)
sendto(r2, &(0x7f0000000200)='hello', 0x5, 0x0, 0x0, 0x0)
recvmsg(r3, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000340)=[{&(0x7f0000000400)=""/100, 0x64}], 0x1}, 0x0)
executing program 3:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$tipc2(&(0x7f0000000040), r0)
sendmsg$TIPC_NL_BEARER_ENABLE(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000080)={0x54, r1, 0x1, 0x0, 0x0, {}, [@TIPC_NLA_BEARER={0x40, 0x1, 0x0, 0x1, [@TIPC_NLA_BEARER_UDP_OPTS={0x2c, 0x4, {{0x14, 0x1, @in={0x2, 0x0, @loopback}}, {0x14, 0x2, @in={0x2, 0x0, @multicast2}}}}, @TIPC_NLA_BEARER_NAME={0xd, 0x1, @udp='udp:syz2\x00'}]}]}, 0x54}}, 0x0)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
sendto$inet(r2, &(0x7f0000000200)="0000002c00000000000000000100000200"/44, 0x2c, 0x0, &(0x7f0000000300)={0x2, 0x111f, @loopback}, 0x10)
sendmsg$TIPC_NL_BEARER_DISABLE(r0, &(0x7f0000000700)={0x0, 0x0, &(0x7f00000006c0)={&(0x7f00000003c0)={0x28, r1, 0x1, 0x0, 0x0, {}, [@TIPC_NLA_BEARER={0x14, 0x1, 0x0, 0x1, [@TIPC_NLA_BEARER_NAME={0xd, 0x1, @udp='udp:syz2\x00'}]}]}, 0x28}}, 0x0)
executing program 4:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000200)=@newsa={0x16c, 0x10, 0x5, 0x1, 0x0, {{@in6=@loopback, @in6=@loopback, 0x0, 0x0, 0x0, 0x0, 0xa, 0x80, 0x80, 0x0, 0x0, 0x80}, {@in6=@loopback, 0x1234, 0x33}, @in6=@loopback, {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}, {}, {}, 0x0, 0x0, 0xa, 0x0, 0x0, 0x80}, [@algo_auth={0x5c, 0x1, {{'hmac(sha1)\x00'}, 0xa0, "000102030405060708090a0b0c0d0e0f10111213"}}, @replay_esn_val={0x20, 0x17, {0x1, 0x0, 0x0, 0x0, 0x0, 0x20, [0x0]}}]}, 0x16c}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000400)={&(0x7f0000000500)=@newpolicy={0xfc, 0x13, 0x5, 0x1, 0x0, {{@in6=@loopback, @in6=@loopback, 0x0, 0x0, 0x0, 0x0, 0xa, 0x80, 0x80}, {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}, {}, 0x0, 0x0, 0x1}, [@tmpl={0x44, 0x5, [{{@in6=@loopback, 0x1234, 0x33}, 0xa, @in6=@loopback}]}]}, 0xfc}}, 0x0)
r1 = socket$inet6(0xa, 0x2, 0x0)
sendto$inet6(r1, &(0x7f0000000600)="1234567890", 0xa, 0x0, &(0x7f0000000700)={0xa, 0x1234, 0x0, @loopback}, 0x1c)
executing program 2:
r0 = socket$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 1:
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$inet_sctp_SCTP_INITMSG(r1, 0x84, 0x2, &(0x7f0000000200)={0x10, 0x10}, 0x8)
connect(r1, &(0x7f0000000100)=@in={0x2, 0x4e20, @loopback}, 0x10)
executing program 3:
r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$NFT_MSG_GETGEN(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000200)={0x14, 0x10, 0xa, 0x0, 0x0, 0x0, {0xa}}, 0x14}}, 0x0)
executing program 4:
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000100)=@newlink={0x50, 0x10, 0x401, 0x0, 0x0, {}, [@IFLA_IFNAME={0x14, 0x3, 'bridge0\x00'}, @IFLA_LINKINFO={0x1c, 0x12, 0x0, 0x1, @bridge={{0xb}, {0xc, 0x2, 0x0, 0x1, [@IFLA_BR_STP_STATE={0x8, 0x5, 0x1}]}}}]}, 0x50}}, 0x0)
r1 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000180)={'bridge0\x00', <r2=>0x0})
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f00000001c0)={'bridge0\x00', 0x1})
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000200)={'syz_tun\x00', <r3=>0x0})
sendmsg$nl_route(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000280)={&(0x7f00000002c0)=@setlink={0x34, 0x13, 0x1, 0x0, 0x0, {0x0, 0x0, 0x0, r3}, [@IFLA_ADDRESS={0xa, 0x1, @random="0242ac110002"}, @IFLA_MASTER={0x8, 0xa, r2}]}, 0x34}}, 0x0)
ioctl$sock_inet_SIOCSIFFLAGS(r1, 0x8914, &(0x7f0000000300)={'syz_tun\x00'})
syz_emit_ethernet(0x15, &(0x7f0000000400)=ANY=[@ANYBLOB="0180c20000000242ac110001000742420300000000"], 0x0)
executing program 2:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)={0x38, 0x1403, 0x1, 0x70bd2b, 0x25dfdbff, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'veth0\x00'}}]}, 0x38}, 0x1, 0x0, 0x0, 0x200009d1}, 0x0)
r1 = socket$inet_smc(0x2b, 0x1, 0x0)
connect$inet(r1, &(0x7f0000000100)={0x2, 0x4e21, @dev={0x7f, 0x0, 0x0, 0x1}}, 0x10)
executing program 3:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000000)=@newsa={0x0, 0x10, 0x1, 0x0, 0x0, {{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0x0, 0x11}, {@in=@loopback, 0x1234, 0x32}, @in=@loopback, {}, {}, {}, 0x0, 0x0, 0x2, 0x0, 0x0, 0x80}, [@algo_crypt={0x0, 0xa, {{'cbc(aes)\x00'}, 0x80, "00112233445566778899aabbccddeeff"}}, @replay_esn_val={0x0, 0x15, {0x1, 0x0, 0x0, 0x0, 0x0, 0x20, [0x0]}}]}}}, 0x0)
r1 = socket$inet_udp(0x2, 0x2, 0x0)
bind$inet(r1, &(0x7f00000001c0)={0x2, 0x4e20, @loopback}, 0x10)
connect$inet(r1, &(0x7f0000000480)={0x2, 0x4e20, @loopback}, 0x10)
setsockopt$inet_IP_XFRM_POLICY(r1, 0x0, 0x11, &(0x7f00000002c0)={{{@in=@loopback, @in=@loopback, 0x0, 0x0, 0x0, 0x0, 0x2}, {}, {}, 0x0, 0x0, 0x1}, {{@in=@loopback, 0x1234, 0x32}, 0x2, @in=@loopback}}, 0xe8)
sendto$inet(r1, &(0x7f0000000500)="12345678", 0x8, 0x0, &(0x7f0000000480)={0x2, 0x4e20, @loopback}, 0x10)
executing program 1:
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_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000200)=ANY=[@ANYBLOB="4000000010000100000000000000000000000000000000001c0012800b00010076657468300000000c000280140001000b0001007665746831000000"], 0x40}}, 0x0)
sendmsg$nl_route(r0, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000200)=ANY=[@ANYBLOB="20000000100001000000000000000000000000000100000001000000100003800b0001007665746830000000"], 0x20}}, 0x0)
sendmsg$nl_route(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000200)=ANY=[@ANYBLOB="20000000100001000000000000000000000000000100000001000000100003800b0001007665746831000000"], 0x20}}, 0x0)
r1 = socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$tipc2(&(0x7f0000000040), r1)
sendmsg$TIPC_NL_BEARER_ENABLE(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000300)={&(0x7f0000000340)={0x28, r2, 0x1, 0x0, 0x0, {}, [@TIPC_NLA_BEARER={0x14, 0x1, 0x0, 0x1, [@TIPC_NLA_BEARER_NAME={0xe, 0x1, @l2={'eth', 0x3a, 'veth0\x00'}}]}]}, 0x28}}, 0x0)
r3 = socket$packet(0x11, 0x3, 0x8b88)
bind$packet(r3, &(0x7f0000000100)={0x11, 0x8b88, 0x3, 0x1, 0x0, 0x6, @broadcast}, 0x14)
sendto$packet(r3, &(0x7f0000000200)="ffffffffffff02000000000188ca1000"/66, 0x40, 0x0, &(0x7f0000000100)={0x11, 0x8b88, 0x3, 0x1, 0x0, 0x6, @broadcast}, 0x14)
executing program 3:
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f0000000000)={&(0x7f0000000040), 0x10, &(0x7f0000000080)={&(0x7f00000000c0)=@newqdisc={0x34, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, 0x1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_qfg={0x8}]}, 0x34}}, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f0000000100)={&(0x7f0000000140), 0x10, &(0x7f0000000180)={&(0x7f00000001c0)=@newtclass={0x50, 0x28, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, 0x1, {0x1, 0x1}, {0x0, 0x1}}, [@tclass_kind_options=@c_qfq={{0x8}, {0x18, 0x2, [@TCA_QFQ_WEIGHT={0x8, 0x1, 0x64}, @TCA_QFQ_LMAX={0x8, 0x2, 0x5dc}]}}]}, 0x50}}, 0x0)
r1 = socket$inet_udp(0x2, 0x2, 0x0)
setsockopt$sock_int(r1, 0x1, 0xc, &(0x7f0000000500)=0x10001, 0x4)
connect$inet(r1, &(0x7f0000000600)={0x2, 0x1234, @loopback}, 0x10)
write(r1, &(0x7f0000000700)='hello', 0x5)
sendmsg$nl_route_sched(r0, &(0x7f0000000200)={&(0x7f0000000240), 0x10, &(0x7f0000000280)={&(0x7f00000002c0)=@deltclass={0x40, 0x29, 0x1, 0x0, 0x0, {0x0, 0x0, 0x0, 0x1, {0x1, 0x1}, {0x0, 0x1}}, [@tclass_kind_options=@c_qfq={{0x8}, {0x8}}]}, 0x40}}, 0x0)
executing program 2:
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 1:
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$inet_sctp_SCTP_PEER_ADDR_PARAMS(r1, 0x84, 0x9, &(0x7f0000000500)={0x0, @in={{0x2, 0x4e20, @loopback}}, 0x1, 0x0, 0x0, 0x0, 0x1}, 0x9c)
nanosleep(&(0x7f0000000600)={0x0, 0x11e1a300}, 0x0)
executing program 2:
r0 = bpf$BPF_PROG_WITH_BTFID_LOAD(0x5, &(0x7f00000000c0)=@bpf_tracing={0x1a, 0x3, &(0x7f0000000180)=@framed, &(0x7f00000001c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x1c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
r1 = bpf$BPF_LINK_CREATE(0x1c, &(0x7f0000000300)={r0, 0x0, 0x1c, 0x0, @val=@iter={&(0x7f0000000400)=@cgroup={0x0, 0x0}, 0x10}}, 0x40)
r2 = bpf$ITER_CREATE(0x21, &(0x7f0000000500)={r1}, 0x8)
read(r2, &(0x7f0000000600), 0x100)
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$SIOCX25SSUBSCRIP(r2, 0x89e1, &(0x7f0000000100)={'dvmrp0\x00', 0x0, 0x1})
executing program 3:
r0 = socket$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$xdp(r1, &(0x7f0000000200), 0x40)
executing program 2:
r0 = socket$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 2:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000240)=@newsa={0x13c, 0x10, 0x1, 0x0, 0x0, {{@in=@empty, @in=@empty, 0x0, 0x0, 0x0, 0x0, 0x2}, {@in=@local, 0x1234, 0x6c}, @in=@remote, {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}, {}, {}, 0x0, 0x0, 0x2}, [@algo_comp={0x49, 0x3, {{'deflate\x00'}, 0x0, '\x00'}}]}, 0x13c}}, 0x0)
syz_emit_ethernet(0x3e, &(0x7f0000000200)={@local, @remote, @void, {@ipv4={0x800, @generic={{0x5, 0x4, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0, 0x6c, 0x0, @remote, @local}, "000012341234567890123456"}}}}, 0x0)
executing program 3:
r0 = socket$inet(0x2, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000040)={'bridge0\x00', <r1=>0x0})
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000080)={'syzkaller0\x00'})
ioctl$sock_ifreq(r0, 0x89a2, &(0x7f00000000c0)={'bridge0\x00', @ifru_ivalue=0x2})
r2 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r2, &(0x7f0000000000)={&(0x7f0000000100), 0xc, &(0x7f0000000010)={&(0x7f0000000020)=@getlink={0x20, 0x12, 0x1, 0x0, 0x0, {0x0, 0x0, 0x0, r1}}, 0x20}}, 0x0)
syz_emit_ethernet(0x1f, &(0x7f0000000180)=ANY=[@ANYBLOB="0180c2000000000000000000001142420300"/33], 0x0)
executing program 4:
r0 = socket(0x8, 0x2, 0x0)
openat$ppp(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl(r0, 0x40046102, &(0x7f0000000100)="0100")
executing program 1:
r0 = socket$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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm
program crashed: WARNING: suspicious RCU usage in xfrm_nlmsg_multicast
simplifying C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$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 39m34.418085674s
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
1 lock held by syz.0.17/5850:
 #0: ffff88807fbec410 (&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: 5850 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(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:6876
 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+0x1703/0x1e50 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+0x7bb/0x940 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
 __sock_sendmsg net/socket.c:790 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2684
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
 __sys_sendmsg net/socket.c:2770 [inline]
 __do_sys_sendmsg net/socket.c:2775 [inline]
 __se_sys_sendmsg net/socket.c:2773 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f725359de99
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:00007fffbd10e2c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f7253825fa0 RCX: 00007f725359de99
RDX: 0000000000000000 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007f7253633eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7253825fac R14: 00007f7253825fa0 R15: 00007f7253825fa0
 </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
1 lock held by syz.0.17/5850:
 #0: ffff88807fbec410 (&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: 5850 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(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:6876
 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+0x1703/0x1e50 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+0x7bb/0x940 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
 __sock_sendmsg net/socket.c:790 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2684
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
 __sys_sendmsg net/socket.c:2770 [inline]
 __do_sys_sendmsg net/socket.c:2775 [inline]
 __se_sys_sendmsg net/socket.c:2773 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f725359de99
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:00007fffbd10e2c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f7253825fa0 RCX: 00007f725359de99
RDX: 0000000000000000 RSI: 0000200000000500 RDI: 0000000000000003
RBP: 00007f7253633eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7253825fac R14: 00007f7253825fa0 R15: 00007f7253825fa0
 </TASK>