Extracting prog: 5m7.606384847s
Minimizing prog: 49m7.881626065s
Simplifying prog options: 13m21.019223037s
Extracting C: 5m13.449574906s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
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}}): socketpair$nbd-setsockopt$sock_attach_bpf-bpf$BPF_PROG_QUERY-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000240))
setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x84, 0x79, 0x0, 0x0)
bpf$BPF_PROG_QUERY(0x10, &(0x7f0000000700)={@map=0x1, 0x24, 0x1, 0x9, &(0x7f0000000600), 0x0, 0x0, 0x0, 0x0, 0x0}, 0x40)
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

program did not crash
single: failed to extract reproducer
single: executing 1 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}}): socketpair$nbd-setsockopt$sock_attach_bpf-bpf$BPF_PROG_QUERY-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000240))
setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x84, 0x79, 0x0, 0x0)
bpf$BPF_PROG_QUERY(0x10, &(0x7f0000000700)={@map=0x1, 0x24, 0x1, 0x9, &(0x7f0000000600), 0x0, 0x0, 0x0, 0x0, 0x0}, 0x40)
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
single: successfully extracted reproducer
found reproducer with 5 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}}): socketpair$nbd-setsockopt$sock_attach_bpf-bpf$BPF_PROG_QUERY-socket$nl_rdma
detailed listing:
executing program 0:
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000240))
setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x84, 0x79, 0x0, 0x0)
bpf$BPF_PROG_QUERY(0x10, &(0x7f0000000700)={@map=0x1, 0x24, 0x1, 0x9, &(0x7f0000000600), 0x0, 0x0, 0x0, 0x0, 0x0}, 0x40)
socket$nl_rdma(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}}): socketpair$nbd-setsockopt$sock_attach_bpf-bpf$BPF_PROG_QUERY-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000240))
setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x84, 0x79, 0x0, 0x0)
bpf$BPF_PROG_QUERY(0x10, &(0x7f0000000700)={@map=0x1, 0x24, 0x1, 0x9, &(0x7f0000000600), 0x0, 0x0, 0x0, 0x0, 0x0}, 0x40)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(0xffffffffffffffff, &(0x7f00000005c0)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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}}): socketpair$nbd-setsockopt$sock_attach_bpf-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000240))
setsockopt$sock_attach_bpf(0xffffffffffffffff, 0x84, 0x79, 0x0, 0x0)
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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}}): socketpair$nbd-socket$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000240))
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000440)={0x10, 0x0, 0x0, 0x2000}, 0xc, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, 0x0, 0x8000)

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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={0x0, 0x0, &(0x7f0000000580)={0x0}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000480)={0x10, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe}, 0x10}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

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$nl_rdma-sendmsg$RDMA_NLDEV_CMD_NEWLINK
detailed listing:
executing program 0:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000480)={0xd8, 0x1403, 0x1, 0x70bd27, 0x25dfdbfe, "", [{{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'batadv_slave_1\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'team_slave_1\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'veth0_to_batadv\x00'}}, {{0x9, 0x2, 'syz1\x00'}, {0x8, 0x41, 'siw\x00'}, {0x14, 0x33, 'geneve0\x00'}}, {{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'ipvlan1\x00'}}]}, 0xd8}, 0x1, 0x0, 0x0, 0x4008800}, 0x8000)

program crashed: KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
validation run: crashed=true
reproducing took 1h18m30.896432377s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in __ethtool_get_link_ksettings+0x5e/0x170 net/ethtool/ioctl.c:443
Read of size 8 at addr ffff88804fe7c2f0 by task kworker/0:2/795

CPU: 0 UID: 0 PID: 795 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: events smc_ib_port_event_work
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xba/0x230 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 __ethtool_get_link_ksettings+0x5e/0x170 net/ethtool/ioctl.c:443
 ib_get_eth_speed+0x180/0x7f0 drivers/infiniband/core/verbs.c:2054
 rxe_query_port+0x93/0x3d0 drivers/infiniband/sw/rxe/rxe_verbs.c:62
 __ib_query_port drivers/infiniband/core/device.c:2120 [inline]
 ib_query_port+0x170/0x830 drivers/infiniband/core/device.c:2152
 smc_ib_remember_port_attr net/smc/smc_ib.c:364 [inline]
 smc_ib_port_event_work+0x15a/0x940 net/smc/smc_ib.c:388
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 5941:
 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:5260 [inline]
 __kvmalloc_node_noprof+0x528/0x8a0 mm/slub.c:6752
 alloc_netdev_mqs+0xa6/0x11b0 net/core/dev.c:12047
 rtnl_create_link+0x31f/0xd70 net/core/rtnetlink.c:3670
 rtnl_newlink_create+0x277/0xb70 net/core/rtnetlink.c:3852
 __rtnl_newlink net/core/rtnetlink.c:3979 [inline]
 rtnl_newlink+0x1666/0x1be0 net/core/rtnetlink.c:4094
 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6980
 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 __sys_sendto+0x672/0x710 net/socket.c:2206
 __do_sys_sendto net/socket.c:2213 [inline]
 __se_sys_sendto net/socket.c:2209 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2209
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 927:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 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:2685 [inline]
 slab_free mm/slub.c:6165 [inline]
 kfree+0x1c1/0x630 mm/slub.c:6483
 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+0x228/0x560 lib/kobject.c:737
 netdev_run_todo+0xc75/0xde0 net/core/dev.c:11748
 default_device_exit_batch+0x986/0xa00 net/core/dev.c:13087
 ops_exit_list net/core/net_namespace.c:205 [inline]
 ops_undo_list+0x52b/0x940 net/core/net_namespace.c:252
 cleanup_net+0x56b/0x800 net/core/net_namespace.c:704
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 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 ffff88804fe7c000
 which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 752 bytes inside of
 freed 4096-byte region [ffff88804fe7c000, ffff88804fe7d000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4fe78
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88804fe79011
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813fe02500 dead000000000100 dead000000000122
raw: 0000000000000000 0000200000040004 00000000f5000000 ffff88804fe79011
head: 00fff00000000040 ffff88813fe02500 dead000000000100 dead000000000122
head: 0000000000000000 0000200000040004 00000000f5000000 ffff88804fe79011
head: 00fff00000000003 ffffea00013f9e01 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 0xd60c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5941, tgid 5941 (syz-executor), ts 99388108992, free_ts 94808022178
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
 prep_new_page mm/page_alloc.c:1897 [inline]
 get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
 alloc_slab_page mm/slub.c:3292 [inline]
 allocate_slab+0x77/0x660 mm/slub.c:3481
 new_slab mm/slub.c:3539 [inline]
 refill_objects+0x331/0x3c0 mm/slub.c:7175
 refill_sheaf mm/slub.c:2812 [inline]
 __pcs_replace_empty_main+0x2e6/0x730 mm/slub.c:4615
 alloc_from_pcs mm/slub.c:4717 [inline]
 slab_alloc_node mm/slub.c:4851 [inline]
 __do_kmalloc_node mm/slub.c:5259 [inline]
 __kvmalloc_node_noprof+0x657/0x8a0 mm/slub.c:6752
 alloc_netdev_mqs+0xa6/0x11b0 net/core/dev.c:12047
 rtnl_create_link+0x31f/0xd70 net/core/rtnetlink.c:3670
 rtnl_newlink_create+0x277/0xb70 net/core/rtnetlink.c:3852
 __rtnl_newlink net/core/rtnetlink.c:3979 [inline]
 rtnl_newlink+0x1666/0x1be0 net/core/rtnetlink.c:4094
 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6980
 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 __sys_sendto+0x672/0x710 net/socket.c:2206
page last free pid 5191 tgid 5191 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1433 [inline]
 __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
 kasan_depopulate_vmalloc_pte+0x6d/0x90 mm/kasan/shadow.c:484
 apply_to_pte_range mm/memory.c:3243 [inline]
 apply_to_pmd_range mm/memory.c:3287 [inline]
 apply_to_pud_range mm/memory.c:3323 [inline]
 apply_to_p4d_range mm/memory.c:3359 [inline]
 __apply_to_page_range+0xbdc/0x1420 mm/memory.c:3395
 __kasan_release_vmalloc+0xa2/0xd0 mm/kasan/shadow.c:602
 kasan_release_vmalloc include/linux/kasan.h:593 [inline]
 kasan_release_vmalloc_node mm/vmalloc.c:2290 [inline]
 purge_vmap_node+0x220/0x960 mm/vmalloc.c:2312
 __purge_vmap_area_lazy+0x779/0xb70 mm/vmalloc.c:2402
 drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2436
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff88804fe7c180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88804fe7c200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88804fe7c280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff88804fe7c300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88804fe7c380: 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 __ethtool_get_link_ksettings+0x5e/0x170 net/ethtool/ioctl.c:443
Read of size 8 at addr ffff88804fe7c2f0 by task kworker/0:2/795

CPU: 0 UID: 0 PID: 795 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: events smc_ib_port_event_work
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xba/0x230 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 __ethtool_get_link_ksettings+0x5e/0x170 net/ethtool/ioctl.c:443
 ib_get_eth_speed+0x180/0x7f0 drivers/infiniband/core/verbs.c:2054
 rxe_query_port+0x93/0x3d0 drivers/infiniband/sw/rxe/rxe_verbs.c:62
 __ib_query_port drivers/infiniband/core/device.c:2120 [inline]
 ib_query_port+0x170/0x830 drivers/infiniband/core/device.c:2152
 smc_ib_remember_port_attr net/smc/smc_ib.c:364 [inline]
 smc_ib_port_event_work+0x15a/0x940 net/smc/smc_ib.c:388
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 5941:
 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:5260 [inline]
 __kvmalloc_node_noprof+0x528/0x8a0 mm/slub.c:6752
 alloc_netdev_mqs+0xa6/0x11b0 net/core/dev.c:12047
 rtnl_create_link+0x31f/0xd70 net/core/rtnetlink.c:3670
 rtnl_newlink_create+0x277/0xb70 net/core/rtnetlink.c:3852
 __rtnl_newlink net/core/rtnetlink.c:3979 [inline]
 rtnl_newlink+0x1666/0x1be0 net/core/rtnetlink.c:4094
 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6980
 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 __sys_sendto+0x672/0x710 net/socket.c:2206
 __do_sys_sendto net/socket.c:2213 [inline]
 __se_sys_sendto net/socket.c:2209 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2209
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 927:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 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:2685 [inline]
 slab_free mm/slub.c:6165 [inline]
 kfree+0x1c1/0x630 mm/slub.c:6483
 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+0x228/0x560 lib/kobject.c:737
 netdev_run_todo+0xc75/0xde0 net/core/dev.c:11748
 default_device_exit_batch+0x986/0xa00 net/core/dev.c:13087
 ops_exit_list net/core/net_namespace.c:205 [inline]
 ops_undo_list+0x52b/0x940 net/core/net_namespace.c:252
 cleanup_net+0x56b/0x800 net/core/net_namespace.c:704
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 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 ffff88804fe7c000
 which belongs to the cache kmalloc-cg-4k of size 4096
The buggy address is located 752 bytes inside of
 freed 4096-byte region [ffff88804fe7c000, ffff88804fe7d000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4fe78
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88804fe79011
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88813fe02500 dead000000000100 dead000000000122
raw: 0000000000000000 0000200000040004 00000000f5000000 ffff88804fe79011
head: 00fff00000000040 ffff88813fe02500 dead000000000100 dead000000000122
head: 0000000000000000 0000200000040004 00000000f5000000 ffff88804fe79011
head: 00fff00000000003 ffffea00013f9e01 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 0xd60c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5941, tgid 5941 (syz-executor), ts 99388108992, free_ts 94808022178
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889
 prep_new_page mm/page_alloc.c:1897 [inline]
 get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250
 alloc_slab_page mm/slub.c:3292 [inline]
 allocate_slab+0x77/0x660 mm/slub.c:3481
 new_slab mm/slub.c:3539 [inline]
 refill_objects+0x331/0x3c0 mm/slub.c:7175
 refill_sheaf mm/slub.c:2812 [inline]
 __pcs_replace_empty_main+0x2e6/0x730 mm/slub.c:4615
 alloc_from_pcs mm/slub.c:4717 [inline]
 slab_alloc_node mm/slub.c:4851 [inline]
 __do_kmalloc_node mm/slub.c:5259 [inline]
 __kvmalloc_node_noprof+0x657/0x8a0 mm/slub.c:6752
 alloc_netdev_mqs+0xa6/0x11b0 net/core/dev.c:12047
 rtnl_create_link+0x31f/0xd70 net/core/rtnetlink.c:3670
 rtnl_newlink_create+0x277/0xb70 net/core/rtnetlink.c:3852
 __rtnl_newlink net/core/rtnetlink.c:3979 [inline]
 rtnl_newlink+0x1666/0x1be0 net/core/rtnetlink.c:4094
 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6980
 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 __sys_sendto+0x672/0x710 net/socket.c:2206
page last free pid 5191 tgid 5191 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1433 [inline]
 __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
 kasan_depopulate_vmalloc_pte+0x6d/0x90 mm/kasan/shadow.c:484
 apply_to_pte_range mm/memory.c:3243 [inline]
 apply_to_pmd_range mm/memory.c:3287 [inline]
 apply_to_pud_range mm/memory.c:3323 [inline]
 apply_to_p4d_range mm/memory.c:3359 [inline]
 __apply_to_page_range+0xbdc/0x1420 mm/memory.c:3395
 __kasan_release_vmalloc+0xa2/0xd0 mm/kasan/shadow.c:602
 kasan_release_vmalloc include/linux/kasan.h:593 [inline]
 kasan_release_vmalloc_node mm/vmalloc.c:2290 [inline]
 purge_vmap_node+0x220/0x960 mm/vmalloc.c:2312
 __purge_vmap_area_lazy+0x779/0xb70 mm/vmalloc.c:2402
 drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2436
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff88804fe7c180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88804fe7c200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88804fe7c280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff88804fe7c300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88804fe7c380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================