Extracting prog: 1m5.676679579s Minimizing prog: 3m38.777699731s Simplifying prog options: 5m24.402179512s Extracting C: 59.04830628s 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:6 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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$nl_route-openat$cgroup_ro-close-socketpair$nbd-ioctl$SIOCSIFHWADDR-sendmsg$nl_route-socket$kcm-sendmsg$kcm-socket$kcm-sendmsg$kcm detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'wlan1\x00', 0x0}) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0xf0, &(0x7f0000000100)={&(0x7f0000000280)=@newlink={0x20, 0x10, 0x401, 0x0, 0x0, {0x0, 0x48, 0x0, r1, 0x21eae}}, 0x20}}, 0x0) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cgroup.events\x00', 0x26e1, 0x0) close(r3) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)) ioctl$SIOCSIFHWADDR(r3, 0x8b06, &(0x7f0000000000)={'wlan1\x00', @random="060000000010"}) sendmsg$nl_route(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[@ANYBLOB="300000001000010000003a194618d96d6d2e8553", @ANYRES32=0x0, @ANYBLOB='\x00\x00\x00\x00\x00\x00\x00\x00\b\x00\n\x00', @ANYRES32=0x0, @ANYBLOB="08001b"], 0x30}}, 0x0) r4 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r4, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="2e00000010008188e6b62aa73772cc9f1ba1f848480000005e140602000000000e000a000f000000028000001294", 0x2e}], 0x1}, 0x0) r5 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r5, &(0x7f0000000600)={0x0, 0xfffffffe, &(0x7f0000000080)=[{&(0x7f0000000000)="2e00000010008188040f80ec59acbc0413a1f8480f0000005e140602000000000e000a001000000002800000121f", 0x2e}], 0x1}, 0x0) program crashed: lost connection to test machine single: successfully extracted reproducer found reproducer with 13 syscalls minimizing guilty program testing program (duration=47.794880815s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$nl_route-openat$cgroup_ro-close-socketpair$nbd-ioctl$SIOCSIFHWADDR-sendmsg$nl_route-socket$kcm-sendmsg$kcm-socket$kcm detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'wlan1\x00', 0x0}) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0xf0, &(0x7f0000000100)={&(0x7f0000000280)=@newlink={0x20, 0x10, 0x401, 0x0, 0x0, {0x0, 0x48, 0x0, r1, 0x21eae}}, 0x20}}, 0x0) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cgroup.events\x00', 0x26e1, 0x0) close(r3) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)) ioctl$SIOCSIFHWADDR(r3, 0x8b06, &(0x7f0000000000)={'wlan1\x00', @random="060000000010"}) sendmsg$nl_route(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[@ANYBLOB="300000001000010000003a194618d96d6d2e8553", @ANYRES32=0x0, @ANYBLOB='\x00\x00\x00\x00\x00\x00\x00\x00\b\x00\n\x00', @ANYRES32=0x0, @ANYBLOB="08001b"], 0x30}}, 0x0) r4 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r4, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="2e00000010008188e6b62aa73772cc9f1ba1f848480000005e140602000000000e000a000f000000028000001294", 0x2e}], 0x1}, 0x0) socket$kcm(0x10, 0x2, 0x0) minimization failed with failed to copy syz-executor to VM: failed to run ["scp" "-P" "22804" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/syzkaller/syzkaller/current/bin/linux_amd64/syz-executor" "root@localhost:/syz-executor"]: exit status 1 extracting C reproducer testing compiled C program (duration=47.794880815s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$nl_route-openat$cgroup_ro-close-socketpair$nbd-ioctl$SIOCSIFHWADDR-sendmsg$nl_route-socket$kcm-sendmsg$kcm-socket$kcm-sendmsg$kcm program did not crash simplifying guilty program options testing program (duration=47.794880815s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$nl_route-openat$cgroup_ro-close-socketpair$nbd-ioctl$SIOCSIFHWADDR-sendmsg$nl_route-socket$kcm-sendmsg$kcm-socket$kcm-sendmsg$kcm detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'wlan1\x00', 0x0}) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0xf0, &(0x7f0000000100)={&(0x7f0000000280)=@newlink={0x20, 0x10, 0x401, 0x0, 0x0, {0x0, 0x48, 0x0, r1, 0x21eae}}, 0x20}}, 0x0) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cgroup.events\x00', 0x26e1, 0x0) close(r3) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)) ioctl$SIOCSIFHWADDR(r3, 0x8b06, &(0x7f0000000000)={'wlan1\x00', @random="060000000010"}) sendmsg$nl_route(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[@ANYBLOB="300000001000010000003a194618d96d6d2e8553", @ANYRES32=0x0, @ANYBLOB='\x00\x00\x00\x00\x00\x00\x00\x00\b\x00\n\x00', @ANYRES32=0x0, @ANYBLOB="08001b"], 0x30}}, 0x0) r4 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r4, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="2e00000010008188e6b62aa73772cc9f1ba1f848480000005e140602000000000e000a000f000000028000001294", 0x2e}], 0x1}, 0x0) r5 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r5, &(0x7f0000000600)={0x0, 0xfffffffe, &(0x7f0000000080)=[{&(0x7f0000000000)="2e00000010008188040f80ec59acbc0413a1f8480f0000005e140602000000000e000a001000000002800000121f", 0x2e}], 0x1}, 0x0) program did not crash testing program (duration=47.794880815s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$nl_route-openat$cgroup_ro-close-socketpair$nbd-ioctl$SIOCSIFHWADDR-sendmsg$nl_route-socket$kcm-sendmsg$kcm-socket$kcm-sendmsg$kcm detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'wlan1\x00', 0x0}) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0xf0, &(0x7f0000000100)={&(0x7f0000000280)=@newlink={0x20, 0x10, 0x401, 0x0, 0x0, {0x0, 0x48, 0x0, r1, 0x21eae}}, 0x20}}, 0x0) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cgroup.events\x00', 0x26e1, 0x0) close(r3) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)) ioctl$SIOCSIFHWADDR(r3, 0x8b06, &(0x7f0000000000)={'wlan1\x00', @random="060000000010"}) sendmsg$nl_route(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[@ANYBLOB="300000001000010000003a194618d96d6d2e8553", @ANYRES32=0x0, @ANYBLOB='\x00\x00\x00\x00\x00\x00\x00\x00\b\x00\n\x00', @ANYRES32=0x0, @ANYBLOB="08001b"], 0x30}}, 0x0) r4 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r4, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="2e00000010008188e6b62aa73772cc9f1ba1f848480000005e140602000000000e000a000f000000028000001294", 0x2e}], 0x1}, 0x0) r5 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r5, &(0x7f0000000600)={0x0, 0xfffffffe, &(0x7f0000000080)=[{&(0x7f0000000000)="2e00000010008188040f80ec59acbc0413a1f8480f0000005e140602000000000e000a001000000002800000121f", 0x2e}], 0x1}, 0x0) program crashed: lost connection to test machine extracting C reproducer testing compiled C program (duration=47.794880815s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$nl_route-openat$cgroup_ro-close-socketpair$nbd-ioctl$SIOCSIFHWADDR-sendmsg$nl_route-socket$kcm-sendmsg$kcm-socket$kcm-sendmsg$kcm program did not crash testing program (duration=47.794880815s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$nl_route-openat$cgroup_ro-close-socketpair$nbd-ioctl$SIOCSIFHWADDR-sendmsg$nl_route-socket$kcm-sendmsg$kcm-socket$kcm-sendmsg$kcm detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'wlan1\x00', 0x0}) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0xf0, &(0x7f0000000100)={&(0x7f0000000280)=@newlink={0x20, 0x10, 0x401, 0x0, 0x0, {0x0, 0x48, 0x0, r1, 0x21eae}}, 0x20}}, 0x0) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cgroup.events\x00', 0x26e1, 0x0) close(r3) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)) ioctl$SIOCSIFHWADDR(r3, 0x8b06, &(0x7f0000000000)={'wlan1\x00', @random="060000000010"}) sendmsg$nl_route(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[@ANYBLOB="300000001000010000003a194618d96d6d2e8553", @ANYRES32=0x0, @ANYBLOB='\x00\x00\x00\x00\x00\x00\x00\x00\b\x00\n\x00', @ANYRES32=0x0, @ANYBLOB="08001b"], 0x30}}, 0x0) r4 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r4, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="2e00000010008188e6b62aa73772cc9f1ba1f848480000005e140602000000000e000a000f000000028000001294", 0x2e}], 0x1}, 0x0) r5 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r5, &(0x7f0000000600)={0x0, 0xfffffffe, &(0x7f0000000080)=[{&(0x7f0000000000)="2e00000010008188040f80ec59acbc0413a1f8480f0000005e140602000000000e000a001000000002800000121f", 0x2e}], 0x1}, 0x0) program crashed: general protection fault in bond_header_create validation run: crashed=true testing program (duration=47.794880815s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$nl_route-openat$cgroup_ro-close-socketpair$nbd-ioctl$SIOCSIFHWADDR-sendmsg$nl_route-socket$kcm-sendmsg$kcm-socket$kcm-sendmsg$kcm detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'wlan1\x00', 0x0}) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0xf0, &(0x7f0000000100)={&(0x7f0000000280)=@newlink={0x20, 0x10, 0x401, 0x0, 0x0, {0x0, 0x48, 0x0, r1, 0x21eae}}, 0x20}}, 0x0) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cgroup.events\x00', 0x26e1, 0x0) close(r3) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)) ioctl$SIOCSIFHWADDR(r3, 0x8b06, &(0x7f0000000000)={'wlan1\x00', @random="060000000010"}) sendmsg$nl_route(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[@ANYBLOB="300000001000010000003a194618d96d6d2e8553", @ANYRES32=0x0, @ANYBLOB='\x00\x00\x00\x00\x00\x00\x00\x00\b\x00\n\x00', @ANYRES32=0x0, @ANYBLOB="08001b"], 0x30}}, 0x0) r4 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r4, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="2e00000010008188e6b62aa73772cc9f1ba1f848480000005e140602000000000e000a000f000000028000001294", 0x2e}], 0x1}, 0x0) r5 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r5, &(0x7f0000000600)={0x0, 0xfffffffe, &(0x7f0000000080)=[{&(0x7f0000000000)="2e00000010008188040f80ec59acbc0413a1f8480f0000005e140602000000000e000a001000000002800000121f", 0x2e}], 0x1}, 0x0) program crashed: lost connection to test machine validation run: crashed=true testing program (duration=47.794880815s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route-socket$nl_route-openat$cgroup_ro-close-socketpair$nbd-ioctl$SIOCSIFHWADDR-sendmsg$nl_route-socket$kcm-sendmsg$kcm-socket$kcm-sendmsg$kcm detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'wlan1\x00', 0x0}) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0xf0, &(0x7f0000000100)={&(0x7f0000000280)=@newlink={0x20, 0x10, 0x401, 0x0, 0x0, {0x0, 0x48, 0x0, r1, 0x21eae}}, 0x20}}, 0x0) r2 = socket$nl_route(0x10, 0x3, 0x0) r3 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cgroup.events\x00', 0x26e1, 0x0) close(r3) socketpair$nbd(0x1, 0x1, 0x0, &(0x7f00000000c0)) ioctl$SIOCSIFHWADDR(r3, 0x8b06, &(0x7f0000000000)={'wlan1\x00', @random="060000000010"}) sendmsg$nl_route(r2, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000000c0)=ANY=[@ANYBLOB="300000001000010000003a194618d96d6d2e8553", @ANYRES32=0x0, @ANYBLOB='\x00\x00\x00\x00\x00\x00\x00\x00\b\x00\n\x00', @ANYRES32=0x0, @ANYBLOB="08001b"], 0x30}}, 0x0) r4 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r4, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000000)=[{&(0x7f0000000080)="2e00000010008188e6b62aa73772cc9f1ba1f848480000005e140602000000000e000a000f000000028000001294", 0x2e}], 0x1}, 0x0) r5 = socket$kcm(0x10, 0x2, 0x0) sendmsg$kcm(r5, &(0x7f0000000600)={0x0, 0xfffffffe, &(0x7f0000000080)=[{&(0x7f0000000000)="2e00000010008188040f80ec59acbc0413a1f8480f0000005e140602000000000e000a001000000002800000121f", 0x2e}], 0x1}, 0x0) program crashed: general protection fault in bond_header_create validation run: crashed=true reproducing took 16m14.706381081s repro crashed as (corrupted=false): Oops: general protection fault, probably for non-canonical address 0xe000080fee63d21a: 0000 [#1] SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000607f731e90d0-0x0000607f731e90d7] CPU: 0 UID: 0 PID: 54 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: mld mld_ifc_work RIP: 0010:bond_header_create+0x150/0x300 drivers/net/bonding/bond_main.c:1524 Code: e8 25 bd 59 fb 45 85 f6 0f 84 a5 00 00 00 e8 d7 b8 59 fb eb 05 e8 d0 b8 59 fb 48 85 ed 0f 84 89 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 ef e8 71 81 c5 fb 48 8b 6d 00 4c 8d 75 RSP: 0018:ffffc90000b0f600 EFLAGS: 00010202 RAX: 00000c0fee63d21a RBX: ffffffff866bf37b RCX: ffff888000c524c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000607f731e90d0 R08: ffffffff866bf37b R09: ffffffff8e75e420 R10: dffffc0000000000 R11: ffffffff866bf340 R12: 00000000000086dd R13: ffff8880127763c0 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88808ca55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2fbfe3ff8c CR3: 0000000012645000 CR4: 0000000000352ef0 Call Trace: dev_hard_header include/linux/netdevice.h:3439 [inline] neigh_connected_output+0x286/0x460 net/core/neighbour.c:1644 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x2e5/0x740 net/ipv6/ip6_output.c:219 NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip6_output+0x340/0x550 net/ipv6/ip6_output.c:246 dst_output include/net/dst.h:470 [inline] NF_HOOK+0x177/0x4f0 include/linux/netfilter.h:318 mld_sendpack+0x8b4/0xe40 net/ipv6/mcast.c:1855 mld_send_cr net/ipv6/mcast.c:2154 [inline] mld_ifc_work+0x835/0xe70 net/ipv6/mcast.c:2693 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 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 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bond_header_create+0x150/0x300 drivers/net/bonding/bond_main.c:1524 Code: e8 25 bd 59 fb 45 85 f6 0f 84 a5 00 00 00 e8 d7 b8 59 fb eb 05 e8 d0 b8 59 fb 48 85 ed 0f 84 89 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 ef e8 71 81 c5 fb 48 8b 6d 00 4c 8d 75 RSP: 0018:ffffc90000b0f600 EFLAGS: 00010202 RAX: 00000c0fee63d21a RBX: ffffffff866bf37b RCX: ffff888000c524c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000607f731e90d0 R08: ffffffff866bf37b R09: ffffffff8e75e420 R10: dffffc0000000000 R11: ffffffff866bf340 R12: 00000000000086dd R13: ffff8880127763c0 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88808ca55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e232d92000 CR3: 000000000e54c000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: e8 25 bd 59 fb call 0xfb59bd2a 5: 45 85 f6 test %r14d,%r14d 8: 0f 84 a5 00 00 00 je 0xb3 e: e8 d7 b8 59 fb call 0xfb59b8ea 13: eb 05 jmp 0x1a 15: e8 d0 b8 59 fb call 0xfb59b8ea 1a: 48 85 ed test %rbp,%rbp 1d: 0f 84 89 00 00 00 je 0xac 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 ef mov %rbp,%rdi 34: e8 71 81 c5 fb call 0xfbc581aa 39: 48 8b 6d 00 mov 0x0(%rbp),%rbp 3d: 4c rex.WR 3e: 8d .byte 0x8d 3f: 75 .byte 0x75 final repro crashed as (corrupted=false): Oops: general protection fault, probably for non-canonical address 0xe000080fee63d21a: 0000 [#1] SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000607f731e90d0-0x0000607f731e90d7] CPU: 0 UID: 0 PID: 54 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: mld mld_ifc_work RIP: 0010:bond_header_create+0x150/0x300 drivers/net/bonding/bond_main.c:1524 Code: e8 25 bd 59 fb 45 85 f6 0f 84 a5 00 00 00 e8 d7 b8 59 fb eb 05 e8 d0 b8 59 fb 48 85 ed 0f 84 89 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 ef e8 71 81 c5 fb 48 8b 6d 00 4c 8d 75 RSP: 0018:ffffc90000b0f600 EFLAGS: 00010202 RAX: 00000c0fee63d21a RBX: ffffffff866bf37b RCX: ffff888000c524c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000607f731e90d0 R08: ffffffff866bf37b R09: ffffffff8e75e420 R10: dffffc0000000000 R11: ffffffff866bf340 R12: 00000000000086dd R13: ffff8880127763c0 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88808ca55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2fbfe3ff8c CR3: 0000000012645000 CR4: 0000000000352ef0 Call Trace: dev_hard_header include/linux/netdevice.h:3439 [inline] neigh_connected_output+0x286/0x460 net/core/neighbour.c:1644 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x2e5/0x740 net/ipv6/ip6_output.c:219 NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip6_output+0x340/0x550 net/ipv6/ip6_output.c:246 dst_output include/net/dst.h:470 [inline] NF_HOOK+0x177/0x4f0 include/linux/netfilter.h:318 mld_sendpack+0x8b4/0xe40 net/ipv6/mcast.c:1855 mld_send_cr net/ipv6/mcast.c:2154 [inline] mld_ifc_work+0x835/0xe70 net/ipv6/mcast.c:2693 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 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 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bond_header_create+0x150/0x300 drivers/net/bonding/bond_main.c:1524 Code: e8 25 bd 59 fb 45 85 f6 0f 84 a5 00 00 00 e8 d7 b8 59 fb eb 05 e8 d0 b8 59 fb 48 85 ed 0f 84 89 00 00 00 48 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 48 89 ef e8 71 81 c5 fb 48 8b 6d 00 4c 8d 75 RSP: 0018:ffffc90000b0f600 EFLAGS: 00010202 RAX: 00000c0fee63d21a RBX: ffffffff866bf37b RCX: ffff888000c524c0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000607f731e90d0 R08: ffffffff866bf37b R09: ffffffff8e75e420 R10: dffffc0000000000 R11: ffffffff866bf340 R12: 00000000000086dd R13: ffff8880127763c0 R14: 0000000000000001 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88808ca55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e232d92000 CR3: 000000000e54c000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: e8 25 bd 59 fb call 0xfb59bd2a 5: 45 85 f6 test %r14d,%r14d 8: 0f 84 a5 00 00 00 je 0xb3 e: e8 d7 b8 59 fb call 0xfb59b8ea 13: eb 05 jmp 0x1a 15: e8 d0 b8 59 fb call 0xfb59b8ea 1a: 48 85 ed test %rbp,%rbp 1d: 0f 84 89 00 00 00 je 0xac 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 ef mov %rbp,%rdi 34: e8 71 81 c5 fb call 0xfbc581aa 39: 48 8b 6d 00 mov 0x0(%rbp),%rbp 3d: 4c rex.WR 3e: 8d .byte 0x8d 3f: 75 .byte 0x75