Extracting prog: 4m40.691154056s
Minimizing prog: 59m57.033672688s
Simplifying prog options: 14m17.446300561s
Extracting C: 5m13.448587564s
Simplifying C: 0s


extracting reproducer from 38 programs
testing a last program of every proc
single: executing 8 programs separately with timeout 6m0s
testing program (duration=6m0s, {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$l2tp6-setsockopt$IP6T_SO_SET_REPLACE-syz_init_net_socket$802154_dgram-socket$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK-syz_genetlink_get_family_id$devlink-sendmsg$DEVLINK_CMD_RELOAD-socket$nl_netfilter-sendmsg$NFT_BATCH
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f0000000400)=@raw={'raw\x00', 0x3c1, 0x3, 0x378, 0x0, 0x1170, 0x1398, 0x120, 0x1170, 0x2a8, 0x1398, 0x1398, 0x2a8, 0x1398, 0x3, 0x0, {[{{@ipv6={@empty, @mcast1, [0xff, 0xffffffff], [], 'veth1_to_bridge\x00', 'veth0_to_hsr\x00', {}, {}, 0x2b, 0x3b, 0x3}, 0x0, 0xf8, 0x120, 0x0, {}, [@common=@inet=@set2={{}, {{0x1, 0x3, 0x1}}}, @inet=@rpfilter={{0x28}}]}, @common=@unspec=@NFQUEUE2={0x0, 'NFQUEUE\x00', 0x2, {0xfffe, 0x10, 0x2}}}, {{@uncond, 0x0, 0x160, 0x188, 0x0, {}, [@inet=@rpfilter={{0x28}, {0x2}}, @common=@srh1={{0x90}, {0x1, 0x0, 0x0, 0x0, 0x0, @loopback, @private0, @loopback, [0x0, 0x0, 0x0, 0xff], [], [0xffffff, 0x0, 0xff000000], 0x0, 0x803}}]}, @common=@unspec=@NFQUEUE0={0x28}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0xffffffffffffff36)
syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
r1 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)
r2 = syz_genetlink_get_family_id$devlink(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$DEVLINK_CMD_RELOAD(r1, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f0000000180)={&(0x7f0000000100)={0x3c, r2, 0x200, 0x70bd25, 0x25dfdbfd, {}, [{@nsim={{0xe}, {0xf, 0x2, {'netdevsim', 0x0}}}, @DEVLINK_ATTR_NETNS_FD={0x8}}]}, 0x3c}, 0x1, 0x0, 0x0, 0x4000000}, 0x4008011)
r3 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$NFT_BATCH(r3, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000380)=ANY=[@ANYBLOB="e2cdda3e1000010000000000000000000000000a4eff0000020a01080000000000000000030000000900010073797a3000000000480000000e0a010800000000000000000a00000708000440000000020900010073797a3000000000c74f156354f46a0900010073797a439b899a96bc7472f216835c4d1496c330000000000900020073797b30000000000800044000000001140000001100010000000000008001000200000a"], 0x90}}, 0x8020)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
single: successfully extracted reproducer
found reproducer with 9 syscalls
minimizing guilty program
testing program (duration=6m0s, {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$l2tp6-setsockopt$IP6T_SO_SET_REPLACE-syz_init_net_socket$802154_dgram-socket$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK-syz_genetlink_get_family_id$devlink-sendmsg$DEVLINK_CMD_RELOAD-socket$nl_netfilter
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f0000000400)=@raw={'raw\x00', 0x3c1, 0x3, 0x378, 0x0, 0x1170, 0x1398, 0x120, 0x1170, 0x2a8, 0x1398, 0x1398, 0x2a8, 0x1398, 0x3, 0x0, {[{{@ipv6={@empty, @mcast1, [0xff, 0xffffffff], [], 'veth1_to_bridge\x00', 'veth0_to_hsr\x00', {}, {}, 0x2b, 0x3b, 0x3}, 0x0, 0xf8, 0x120, 0x0, {}, [@common=@inet=@set2={{}, {{0x1, 0x3, 0x1}}}, @inet=@rpfilter={{0x28}}]}, @common=@unspec=@NFQUEUE2={0x0, 'NFQUEUE\x00', 0x2, {0xfffe, 0x10, 0x2}}}, {{@uncond, 0x0, 0x160, 0x188, 0x0, {}, [@inet=@rpfilter={{0x28}, {0x2}}, @common=@srh1={{0x90}, {0x1, 0x0, 0x0, 0x0, 0x0, @loopback, @private0, @loopback, [0x0, 0x0, 0x0, 0xff], [], [0xffffff, 0x0, 0xff000000], 0x0, 0x803}}]}, @common=@unspec=@NFQUEUE0={0x28}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0xffffffffffffff36)
syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
r1 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)
r2 = syz_genetlink_get_family_id$devlink(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$DEVLINK_CMD_RELOAD(r1, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f0000000180)={&(0x7f0000000100)={0x3c, r2, 0x200, 0x70bd25, 0x25dfdbfd, {}, [{@nsim={{0xe}, {0xf, 0x2, {'netdevsim', 0x0}}}, @DEVLINK_ATTR_NETNS_FD={0x8}}]}, 0x3c}, 0x1, 0x0, 0x0, 0x4000000}, 0x4008011)
socket$nl_netfilter(0x10, 0x3, 0xc)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
testing program (duration=6m0s, {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$l2tp6-setsockopt$IP6T_SO_SET_REPLACE-syz_init_net_socket$802154_dgram-socket$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK-syz_genetlink_get_family_id$devlink-sendmsg$DEVLINK_CMD_RELOAD
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f0000000400)=@raw={'raw\x00', 0x3c1, 0x3, 0x378, 0x0, 0x1170, 0x1398, 0x120, 0x1170, 0x2a8, 0x1398, 0x1398, 0x2a8, 0x1398, 0x3, 0x0, {[{{@ipv6={@empty, @mcast1, [0xff, 0xffffffff], [], 'veth1_to_bridge\x00', 'veth0_to_hsr\x00', {}, {}, 0x2b, 0x3b, 0x3}, 0x0, 0xf8, 0x120, 0x0, {}, [@common=@inet=@set2={{}, {{0x1, 0x3, 0x1}}}, @inet=@rpfilter={{0x28}}]}, @common=@unspec=@NFQUEUE2={0x0, 'NFQUEUE\x00', 0x2, {0xfffe, 0x10, 0x2}}}, {{@uncond, 0x0, 0x160, 0x188, 0x0, {}, [@inet=@rpfilter={{0x28}, {0x2}}, @common=@srh1={{0x90}, {0x1, 0x0, 0x0, 0x0, 0x0, @loopback, @private0, @loopback, [0x0, 0x0, 0x0, 0xff], [], [0xffffff, 0x0, 0xff000000], 0x0, 0x803}}]}, @common=@unspec=@NFQUEUE0={0x28}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0xffffffffffffff36)
syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
r1 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)
r2 = syz_genetlink_get_family_id$devlink(&(0x7f0000000040), 0xffffffffffffffff)
sendmsg$DEVLINK_CMD_RELOAD(r1, &(0x7f00000001c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x20000000}, 0xc, &(0x7f0000000180)={&(0x7f0000000100)={0x3c, r2, 0x200, 0x70bd25, 0x25dfdbfd, {}, [{@nsim={{0xe}, {0xf, 0x2, {'netdevsim', 0x0}}}, @DEVLINK_ATTR_NETNS_FD={0x8}}]}, 0x3c}, 0x1, 0x0, 0x0, 0x4000000}, 0x4008011)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
testing program (duration=6m0s, {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$l2tp6-setsockopt$IP6T_SO_SET_REPLACE-syz_init_net_socket$802154_dgram-socket$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK-syz_genetlink_get_family_id$devlink
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f0000000400)=@raw={'raw\x00', 0x3c1, 0x3, 0x378, 0x0, 0x1170, 0x1398, 0x120, 0x1170, 0x2a8, 0x1398, 0x1398, 0x2a8, 0x1398, 0x3, 0x0, {[{{@ipv6={@empty, @mcast1, [0xff, 0xffffffff], [], 'veth1_to_bridge\x00', 'veth0_to_hsr\x00', {}, {}, 0x2b, 0x3b, 0x3}, 0x0, 0xf8, 0x120, 0x0, {}, [@common=@inet=@set2={{}, {{0x1, 0x3, 0x1}}}, @inet=@rpfilter={{0x28}}]}, @common=@unspec=@NFQUEUE2={0x0, 'NFQUEUE\x00', 0x2, {0xfffe, 0x10, 0x2}}}, {{@uncond, 0x0, 0x160, 0x188, 0x0, {}, [@inet=@rpfilter={{0x28}, {0x2}}, @common=@srh1={{0x90}, {0x1, 0x0, 0x0, 0x0, 0x0, @loopback, @private0, @loopback, [0x0, 0x0, 0x0, 0xff], [], [0xffffff, 0x0, 0xff000000], 0x0, 0x803}}]}, @common=@unspec=@NFQUEUE0={0x28}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0xffffffffffffff36)
syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
r1 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)
syz_genetlink_get_family_id$devlink(&(0x7f0000000040), 0xffffffffffffffff)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
testing program (duration=6m0s, {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$l2tp6-setsockopt$IP6T_SO_SET_REPLACE-syz_init_net_socket$802154_dgram-socket$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f0000000400)=@raw={'raw\x00', 0x3c1, 0x3, 0x378, 0x0, 0x1170, 0x1398, 0x120, 0x1170, 0x2a8, 0x1398, 0x1398, 0x2a8, 0x1398, 0x3, 0x0, {[{{@ipv6={@empty, @mcast1, [0xff, 0xffffffff], [], 'veth1_to_bridge\x00', 'veth0_to_hsr\x00', {}, {}, 0x2b, 0x3b, 0x3}, 0x0, 0xf8, 0x120, 0x0, {}, [@common=@inet=@set2={{}, {{0x1, 0x3, 0x1}}}, @inet=@rpfilter={{0x28}}]}, @common=@unspec=@NFQUEUE2={0x0, 'NFQUEUE\x00', 0x2, {0xfffe, 0x10, 0x2}}}, {{@uncond, 0x0, 0x160, 0x188, 0x0, {}, [@inet=@rpfilter={{0x28}, {0x2}}, @common=@srh1={{0x90}, {0x1, 0x0, 0x0, 0x0, 0x0, @loopback, @private0, @loopback, [0x0, 0x0, 0x0, 0xff], [], [0xffffff, 0x0, 0xff000000], 0x0, 0x803}}]}, @common=@unspec=@NFQUEUE0={0x28}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0xffffffffffffff36)
syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
r1 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
testing program (duration=6m0s, {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$l2tp6-setsockopt$IP6T_SO_SET_REPLACE-syz_init_net_socket$802154_dgram-socket$netlink
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f0000000400)=@raw={'raw\x00', 0x3c1, 0x3, 0x378, 0x0, 0x1170, 0x1398, 0x120, 0x1170, 0x2a8, 0x1398, 0x1398, 0x2a8, 0x1398, 0x3, 0x0, {[{{@ipv6={@empty, @mcast1, [0xff, 0xffffffff], [], 'veth1_to_bridge\x00', 'veth0_to_hsr\x00', {}, {}, 0x2b, 0x3b, 0x3}, 0x0, 0xf8, 0x120, 0x0, {}, [@common=@inet=@set2={{}, {{0x1, 0x3, 0x1}}}, @inet=@rpfilter={{0x28}}]}, @common=@unspec=@NFQUEUE2={0x0, 'NFQUEUE\x00', 0x2, {0xfffe, 0x10, 0x2}}}, {{@uncond, 0x0, 0x160, 0x188, 0x0, {}, [@inet=@rpfilter={{0x28}, {0x2}}, @common=@srh1={{0x90}, {0x1, 0x0, 0x0, 0x0, 0x0, @loopback, @private0, @loopback, [0x0, 0x0, 0x0, 0xff], [], [0xffffff, 0x0, 0xff000000], 0x0, 0x803}}]}, @common=@unspec=@NFQUEUE0={0x28}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0xffffffffffffff36)
syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
socket$netlink(0x10, 0x3, 0x14)

program did not crash
testing program (duration=6m0s, {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$l2tp6-setsockopt$IP6T_SO_SET_REPLACE-syz_init_net_socket$802154_dgram-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f0000000400)=@raw={'raw\x00', 0x3c1, 0x3, 0x378, 0x0, 0x1170, 0x1398, 0x120, 0x1170, 0x2a8, 0x1398, 0x1398, 0x2a8, 0x1398, 0x3, 0x0, {[{{@ipv6={@empty, @mcast1, [0xff, 0xffffffff], [], 'veth1_to_bridge\x00', 'veth0_to_hsr\x00', {}, {}, 0x2b, 0x3b, 0x3}, 0x0, 0xf8, 0x120, 0x0, {}, [@common=@inet=@set2={{}, {{0x1, 0x3, 0x1}}}, @inet=@rpfilter={{0x28}}]}, @common=@unspec=@NFQUEUE2={0x0, 'NFQUEUE\x00', 0x2, {0xfffe, 0x10, 0x2}}}, {{@uncond, 0x0, 0x160, 0x188, 0x0, {}, [@inet=@rpfilter={{0x28}, {0x2}}, @common=@srh1={{0x90}, {0x1, 0x0, 0x0, 0x0, 0x0, @loopback, @private0, @loopback, [0x0, 0x0, 0x0, 0xff], [], [0xffffff, 0x0, 0xff000000], 0x0, 0x803}}]}, @common=@unspec=@NFQUEUE0={0x28}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0xffffffffffffff36)
syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(0xffffffffffffffff, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program did not crash
testing program (duration=6m0s, {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$l2tp6-setsockopt$IP6T_SO_SET_REPLACE-socket$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f0000000400)=@raw={'raw\x00', 0x3c1, 0x3, 0x378, 0x0, 0x1170, 0x1398, 0x120, 0x1170, 0x2a8, 0x1398, 0x1398, 0x2a8, 0x1398, 0x3, 0x0, {[{{@ipv6={@empty, @mcast1, [0xff, 0xffffffff], [], 'veth1_to_bridge\x00', 'veth0_to_hsr\x00', {}, {}, 0x2b, 0x3b, 0x3}, 0x0, 0xf8, 0x120, 0x0, {}, [@common=@inet=@set2={{}, {{0x1, 0x3, 0x1}}}, @inet=@rpfilter={{0x28}}]}, @common=@unspec=@NFQUEUE2={0x0, 'NFQUEUE\x00', 0x2, {0xfffe, 0x10, 0x2}}}, {{@uncond, 0x0, 0x160, 0x188, 0x0, {}, [@inet=@rpfilter={{0x28}, {0x2}}, @common=@srh1={{0x90}, {0x1, 0x0, 0x0, 0x0, 0x0, @loopback, @private0, @loopback, [0x0, 0x0, 0x0, 0xff], [], [0xffffff, 0x0, 0xff000000], 0x0, 0x803}}]}, @common=@unspec=@NFQUEUE0={0x28}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0xffffffffffffff36)
r1 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r1, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
testing program (duration=6m0s, {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$l2tp6-socket$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
socket$l2tp6(0xa, 0x2, 0x73)
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
testing program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
testing program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, 0x0, 0x100)

program did not crash
testing program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000002c0)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x5}, 0x100)

program did not crash
testing program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={0x0}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
extracting C reproducer
testing compiled C program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program did not crash
testing program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
validation run: crashed=true
testing program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
validation run: crashed=true
testing program (duration=6m0s, {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$netlink-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$netlink(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000001200)={&(0x7f0000000300)={0x60, 0x1403, 0x1, 0x2, 0x25dfdbfb, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth1_virt_wifi\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0x60}, 0x1, 0x0, 0x0, 0x5}, 0x100)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
validation run: crashed=true
reproducing took 1h32m23.564252569s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
BUG: KASAN: slab-use-after-free in netdev_lock_ops include/net/netdev_lock.h:41 [inline]
BUG: KASAN: slab-use-after-free in __ethtool_get_link_ksettings+0x230/0x250 net/ethtool/ioctl.c:463
Read of size 1 at addr ffff888057c26e09 by task kworker/0:2/188

CPU: 0 UID: 0 PID: 188 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Workqueue: events smc_ib_port_event_work
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description+0x55/0x1e0 mm/kasan/report.c:378
 print_report+0x58/0x70 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
 netdev_lock_ops include/net/netdev_lock.h:41 [inline]
 __ethtool_get_link_ksettings+0x230/0x250 net/ethtool/ioctl.c:463
 __ethtool_get_link_ksettings+0x11f/0x250 net/ethtool/ioctl.c:464
 ib_get_eth_speed+0x180/0x7f0 drivers/infiniband/core/verbs.c:2052
 rxe_query_port+0x93/0x3d0 drivers/infiniband/sw/rxe/rxe_verbs.c:56
 __ib_query_port drivers/infiniband/core/device.c:2129 [inline]
 ib_query_port+0x16e/0x830 drivers/infiniband/core/device.c:2161
 smc_ib_remember_port_attr net/smc/smc_ib.c:364 [inline]
 smc_ib_port_event_work+0x147/0x920 net/smc/smc_ib.c:388
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 9661:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __do_kmalloc_node mm/slub.c:5362 [inline]
 __kvmalloc_node_noprof+0x53f/0x860 mm/slub.c:6933
 alloc_netdev_mqs+0xa9/0x12b0 net/core/dev.c:12054
 rtnl_create_link+0x321/0xd70 net/core/rtnetlink.c:3721
 rtnl_newlink_create+0x25f/0xb00 net/core/rtnetlink.c:3903
 __rtnl_newlink net/core/rtnetlink.c:4044 [inline]
 rtnl_newlink+0x167f/0x1bd0 net/core/rtnetlink.c:4159
 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
 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_sendto+0x408/0x5a0 net/socket.c:2252
 __do_sys_sendto net/socket.c:2259 [inline]
 __se_sys_sendto net/socket.c:2255 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2255
 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

Freed by task 48:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2705 [inline]
 slab_free mm/slub.c:6405 [inline]
 kfree+0x1c5/0x640 mm/slub.c:6720
 device_release+0xc4/0x1f0 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x222/0x550 lib/kobject.c:737
 netdev_run_todo+0xf56/0x10d0 net/core/dev.c:11755
 default_device_exit_batch+0x966/0x9e0 net/core/dev.c:13100
 ops_exit_list net/core/net_namespace.c:205 [inline]
 ops_undo_list+0x4b4/0x8d0 net/core/net_namespace.c:252
 cleanup_net+0x572/0x810 net/core/net_namespace.c:702
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff888057c26000
 which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 3593 bytes inside of
 freed 4096-byte region [ffff888057c26000, ffff888057c27000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x57c20
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888057c21011
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b01c500 dead000000000100 dead000000000122
raw: 0000000000000000 0000200000040004 00000000f5000000 ffff888057c21011
head: 00fff00000000040 ffff88801b01c500 dead000000000100 dead000000000122
head: 0000000000000000 0000200000040004 00000000f5000000 ffff888057c21011
head: 00fff00000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4991, tgid 4991 (udevd), ts 211165351776, free_ts 211146218190
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x21fa/0x2270 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 alloc_slab_page mm/slub.c:3294 [inline]
 allocate_slab+0x79/0x5e0 mm/slub.c:3408
 new_slab mm/slub.c:3454 [inline]
 refill_objects+0x2d5/0x350 mm/slub.c:7338
 refill_sheaf mm/slub.c:2832 [inline]
 __pcs_replace_empty_main+0x2bf/0x6b0 mm/slub.c:4703
 alloc_from_pcs mm/slub.c:4801 [inline]
 slab_alloc_node mm/slub.c:4933 [inline]
 __do_kmalloc_node mm/slub.c:5361 [inline]
 __kvmalloc_node_noprof+0x66b/0x860 mm/slub.c:6933
 seq_buf_alloc fs/seq_file.c:39 [inline]
 seq_read_iter+0x1ea/0xca0 fs/seq_file.c:211
 new_sync_read fs/read_write.c:493 [inline]
 vfs_read+0x595/0xa80 fs/read_write.c:574
 ksys_read+0x150/0x270 fs/read_write.c:716
 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
page last free pid 9661 tgid 9661 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0xc1e/0xd10 mm/page_alloc.c:2950
 __slab_free+0x274/0x2c0 mm/slub.c:5767
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4612 [inline]
 slab_alloc_node mm/slub.c:4945 [inline]
 kmem_cache_alloc_noprof+0x2a0/0x5f0 mm/slub.c:4959
 __kernfs_new_node+0xe6/0x980 fs/kernfs/dir.c:665
 kernfs_new_node+0xea/0x140 fs/kernfs/dir.c:751
 __kernfs_create_file+0x4b/0x2e0 fs/kernfs/file.c:1050
 sysfs_add_file_mode_ns+0x237/0x300 fs/sysfs/file.c:316
 create_files fs/sysfs/group.c:82 [inline]
 internal_create_group+0x679/0x1180 fs/sysfs/group.c:189
 internal_create_groups fs/sysfs/group.c:229 [inline]
 sysfs_create_groups+0x59/0x120 fs/sysfs/group.c:255
 device_add_groups drivers/base/core.c:2907 [inline]
 device_add_attrs+0x1b1/0x600 drivers/base/core.c:2982
 device_add+0x488/0xb80 drivers/base/core.c:3711
 netdev_register_kobject+0x178/0x310 net/core/net-sysfs.c:2337
 register_netdevice+0x1433/0x1eb0 net/core/dev.c:11446

Memory state around the buggy address:
 ffff888057c26d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c26d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888057c26e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff888057c26e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c26f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
BUG: KASAN: slab-use-after-free in netdev_lock_ops include/net/netdev_lock.h:41 [inline]
BUG: KASAN: slab-use-after-free in __ethtool_get_link_ksettings+0x230/0x250 net/ethtool/ioctl.c:463
Read of size 1 at addr ffff888057c26e09 by task kworker/0:2/188

CPU: 0 UID: 0 PID: 188 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Workqueue: events smc_ib_port_event_work
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description+0x55/0x1e0 mm/kasan/report.c:378
 print_report+0x58/0x70 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
 netdev_lock_ops include/net/netdev_lock.h:41 [inline]
 __ethtool_get_link_ksettings+0x230/0x250 net/ethtool/ioctl.c:463
 __ethtool_get_link_ksettings+0x11f/0x250 net/ethtool/ioctl.c:464
 ib_get_eth_speed+0x180/0x7f0 drivers/infiniband/core/verbs.c:2052
 rxe_query_port+0x93/0x3d0 drivers/infiniband/sw/rxe/rxe_verbs.c:56
 __ib_query_port drivers/infiniband/core/device.c:2129 [inline]
 ib_query_port+0x16e/0x830 drivers/infiniband/core/device.c:2161
 smc_ib_remember_port_attr net/smc/smc_ib.c:364 [inline]
 smc_ib_port_event_work+0x147/0x920 net/smc/smc_ib.c:388
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 9661:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __do_kmalloc_node mm/slub.c:5362 [inline]
 __kvmalloc_node_noprof+0x53f/0x860 mm/slub.c:6933
 alloc_netdev_mqs+0xa9/0x12b0 net/core/dev.c:12054
 rtnl_create_link+0x321/0xd70 net/core/rtnetlink.c:3721
 rtnl_newlink_create+0x25f/0xb00 net/core/rtnetlink.c:3903
 __rtnl_newlink net/core/rtnetlink.c:4044 [inline]
 rtnl_newlink+0x167f/0x1bd0 net/core/rtnetlink.c:4159
 rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7076
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
 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_sendto+0x408/0x5a0 net/socket.c:2252
 __do_sys_sendto net/socket.c:2259 [inline]
 __se_sys_sendto net/socket.c:2255 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2255
 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

Freed by task 48:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2705 [inline]
 slab_free mm/slub.c:6405 [inline]
 kfree+0x1c5/0x640 mm/slub.c:6720
 device_release+0xc4/0x1f0 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x222/0x550 lib/kobject.c:737
 netdev_run_todo+0xf56/0x10d0 net/core/dev.c:11755
 default_device_exit_batch+0x966/0x9e0 net/core/dev.c:13100
 ops_exit_list net/core/net_namespace.c:205 [inline]
 ops_undo_list+0x4b4/0x8d0 net/core/net_namespace.c:252
 cleanup_net+0x572/0x810 net/core/net_namespace.c:702
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff888057c26000
 which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 3593 bytes inside of
 freed 4096-byte region [ffff888057c26000, ffff888057c27000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x57c20
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888057c21011
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b01c500 dead000000000100 dead000000000122
raw: 0000000000000000 0000200000040004 00000000f5000000 ffff888057c21011
head: 00fff00000000040 ffff88801b01c500 dead000000000100 dead000000000122
head: 0000000000000000 0000200000040004 00000000f5000000 ffff888057c21011
head: 00fff00000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4991, tgid 4991 (udevd), ts 211165351776, free_ts 211146218190
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0x21fa/0x2270 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
 alloc_slab_page mm/slub.c:3294 [inline]
 allocate_slab+0x79/0x5e0 mm/slub.c:3408
 new_slab mm/slub.c:3454 [inline]
 refill_objects+0x2d5/0x350 mm/slub.c:7338
 refill_sheaf mm/slub.c:2832 [inline]
 __pcs_replace_empty_main+0x2bf/0x6b0 mm/slub.c:4703
 alloc_from_pcs mm/slub.c:4801 [inline]
 slab_alloc_node mm/slub.c:4933 [inline]
 __do_kmalloc_node mm/slub.c:5361 [inline]
 __kvmalloc_node_noprof+0x66b/0x860 mm/slub.c:6933
 seq_buf_alloc fs/seq_file.c:39 [inline]
 seq_read_iter+0x1ea/0xca0 fs/seq_file.c:211
 new_sync_read fs/read_write.c:493 [inline]
 vfs_read+0x595/0xa80 fs/read_write.c:574
 ksys_read+0x150/0x270 fs/read_write.c:716
 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
page last free pid 9661 tgid 9661 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0xc1e/0xd10 mm/page_alloc.c:2950
 __slab_free+0x274/0x2c0 mm/slub.c:5767
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4612 [inline]
 slab_alloc_node mm/slub.c:4945 [inline]
 kmem_cache_alloc_noprof+0x2a0/0x5f0 mm/slub.c:4959
 __kernfs_new_node+0xe6/0x980 fs/kernfs/dir.c:665
 kernfs_new_node+0xea/0x140 fs/kernfs/dir.c:751
 __kernfs_create_file+0x4b/0x2e0 fs/kernfs/file.c:1050
 sysfs_add_file_mode_ns+0x237/0x300 fs/sysfs/file.c:316
 create_files fs/sysfs/group.c:82 [inline]
 internal_create_group+0x679/0x1180 fs/sysfs/group.c:189
 internal_create_groups fs/sysfs/group.c:229 [inline]
 sysfs_create_groups+0x59/0x120 fs/sysfs/group.c:255
 device_add_groups drivers/base/core.c:2907 [inline]
 device_add_attrs+0x1b1/0x600 drivers/base/core.c:2982
 device_add+0x488/0xb80 drivers/base/core.c:3711
 netdev_register_kobject+0x178/0x310 net/core/net-sysfs.c:2337
 register_netdevice+0x1433/0x1eb0 net/core/dev.c:11446

Memory state around the buggy address:
 ffff888057c26d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c26d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888057c26e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff888057c26e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c26f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================