Extracting prog: 2m42.472258288s
Minimizing prog: 4m32.67189244s
Simplifying prog options: 0s
Extracting C: 1m25.58040604s
Simplifying C: 12m50.795830496s
extracting reproducer from 30 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
ioctl$sock_inet6_SIOCSIFADDR(r0, 0x8916, &(0x7f00000000c0)={@local, 0x8019})
program crashed: general protection fault in addrconf_add_ifaddr
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=53.71874248s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6
detailed listing:
executing program 0:
socket$l2tp6(0xa, 0x2, 0x73)
program did not crash
testing program (duration=53.71874248s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$sock_inet6_SIOCSIFADDR
detailed listing:
executing program 0:
ioctl$sock_inet6_SIOCSIFADDR(0xffffffffffffffff, 0x8916, &(0x7f00000000c0)={@local, 0x8019})
program did not crash
testing program (duration=53.71874248s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
detailed listing:
executing program 0:
r0 = socket$l2tp6(0xa, 0x2, 0x73)
ioctl$sock_inet6_SIOCSIFADDR(r0, 0x8916, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=53.71874248s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
program crashed: general protection fault in addrconf_add_ifaddr
simplifying C reproducer
testing compiled C program (duration=53.71874248s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
program crashed: general protection fault in addrconf_add_ifaddr
testing compiled C program (duration=53.71874248s, {Threaded:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
program crashed: general protection fault in addrconf_add_ifaddr
testing compiled C program (duration=53.71874248s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
program crashed: general protection fault in addrconf_add_ifaddr
testing compiled C program (duration=53.71874248s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
program crashed: general protection fault in addrconf_add_ifaddr
testing compiled C program (duration=53.71874248s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
program crashed: general protection fault in addrconf_add_ifaddr
testing compiled C program (duration=53.71874248s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
program crashed: general protection fault in addrconf_add_ifaddr
testing compiled C program (duration=53.71874248s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp6-ioctl$sock_inet6_SIOCSIFADDR
program crashed: general protection fault in addrconf_add_ifaddr
reproducing took 21m31.520412707s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000198: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000cc0-0x0000000000000cc7]
CPU: 0 UID: 0 PID: 5841 Comm: syz-executor251 Not tainted 6.14.0-syzkaller-12504-g8bc251e5d874 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]
RIP: 0010:addrconf_add_ifaddr+0x23e/0x590 net/ipv6/addrconf.c:3157
Code: 03 00 00 8b b4 24 c4 00 00 00 48 8b 7c 24 18 e8 18 a3 25 ff 49 89 c5 48 8d 98 c5 0c 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 38 <42> 0f b6 04 20 84 c0 0f 85 03 03 00 00 48 89 5c 24 28 0f b6 1b 31
RSP: 0018:ffffc900040dfa00 EFLAGS: 00010203
RAX: 0000000000000198 RBX: 0000000000000cc5 RCX: ffff88802c51bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9ac50c80
RBP: ffffc900040dfb50 R08: ffffffff905fc777 R09: 1ffffffff20bf8ee
R10: dffffc0000000000 R11: fffffbfff20bf8ef R12: dffffc0000000000
R13: 0000000000000000 R14: 00002000000000c0 R15: 1ffff9200081bf48
FS: 00005555769f2380(0000) GS:ffff888124f99000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c2 CR3: 000000007cb9a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
inet6_ioctl+0x148/0x280 net/ipv6/af_inet6.c:580
sock_do_ioctl+0x15a/0x490 net/socket.c:1190
sock_ioctl+0x644/0x900 net/socket.c:1311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3695e442e9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd8ba70618 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffd8ba707e8 RCX: 00007f3695e442e9
RDX: 00002000000000c0 RSI: 0000000000008916 RDI: 0000000000000003
RBP: 00007f3695eb7610 R08: 0000000000000000 R09: 00007ffd8ba707e8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd8ba707d8 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]
RIP: 0010:addrconf_add_ifaddr+0x23e/0x590 net/ipv6/addrconf.c:3157
Code: 03 00 00 8b b4 24 c4 00 00 00 48 8b 7c 24 18 e8 18 a3 25 ff 49 89 c5 48 8d 98 c5 0c 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 38 <42> 0f b6 04 20 84 c0 0f 85 03 03 00 00 48 89 5c 24 28 0f b6 1b 31
RSP: 0018:ffffc900040dfa00 EFLAGS: 00010203
RAX: 0000000000000198 RBX: 0000000000000cc5 RCX: ffff88802c51bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9ac50c80
RBP: ffffc900040dfb50 R08: ffffffff905fc777 R09: 1ffffffff20bf8ee
R10: dffffc0000000000 R11: fffffbfff20bf8ef R12: dffffc0000000000
R13: 0000000000000000 R14: 00002000000000c0 R15: 1ffff9200081bf48
FS: 00005555769f2380(0000) GS:ffff888125099000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f1aa431000 CR3: 000000007cb9a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 03 00 add (%rax),%eax
2: 00 8b b4 24 c4 00 add %cl,0xc424b4(%rbx)
8: 00 00 add %al,(%rax)
a: 48 8b 7c 24 18 mov 0x18(%rsp),%rdi
f: e8 18 a3 25 ff call 0xff25a32c
14: 49 89 c5 mov %rax,%r13
17: 48 8d 98 c5 0c 00 00 lea 0xcc5(%rax),%rbx
1e: 48 89 d8 mov %rbx,%rax
21: 48 c1 e8 03 shr $0x3,%rax
25: 48 89 44 24 38 mov %rax,0x38(%rsp)
* 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 03 03 00 00 jne 0x33a
37: 48 89 5c 24 28 mov %rbx,0x28(%rsp)
3c: 0f b6 1b movzbl (%rbx),%ebx
3f: 31 .byte 0x31
final repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000198: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000cc0-0x0000000000000cc7]
CPU: 0 UID: 0 PID: 5841 Comm: syz-executor251 Not tainted 6.14.0-syzkaller-12504-g8bc251e5d874 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]
RIP: 0010:addrconf_add_ifaddr+0x23e/0x590 net/ipv6/addrconf.c:3157
Code: 03 00 00 8b b4 24 c4 00 00 00 48 8b 7c 24 18 e8 18 a3 25 ff 49 89 c5 48 8d 98 c5 0c 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 38 <42> 0f b6 04 20 84 c0 0f 85 03 03 00 00 48 89 5c 24 28 0f b6 1b 31
RSP: 0018:ffffc900040dfa00 EFLAGS: 00010203
RAX: 0000000000000198 RBX: 0000000000000cc5 RCX: ffff88802c51bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9ac50c80
RBP: ffffc900040dfb50 R08: ffffffff905fc777 R09: 1ffffffff20bf8ee
R10: dffffc0000000000 R11: fffffbfff20bf8ef R12: dffffc0000000000
R13: 0000000000000000 R14: 00002000000000c0 R15: 1ffff9200081bf48
FS: 00005555769f2380(0000) GS:ffff888124f99000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c2 CR3: 000000007cb9a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
inet6_ioctl+0x148/0x280 net/ipv6/af_inet6.c:580
sock_do_ioctl+0x15a/0x490 net/socket.c:1190
sock_ioctl+0x644/0x900 net/socket.c:1311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3695e442e9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd8ba70618 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffd8ba707e8 RCX: 00007f3695e442e9
RDX: 00002000000000c0 RSI: 0000000000008916 RDI: 0000000000000003
RBP: 00007f3695eb7610 R08: 0000000000000000 R09: 00007ffd8ba707e8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd8ba707d8 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:30 [inline]
RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]
RIP: 0010:addrconf_add_ifaddr+0x23e/0x590 net/ipv6/addrconf.c:3157
Code: 03 00 00 8b b4 24 c4 00 00 00 48 8b 7c 24 18 e8 18 a3 25 ff 49 89 c5 48 8d 98 c5 0c 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 38 <42> 0f b6 04 20 84 c0 0f 85 03 03 00 00 48 89 5c 24 28 0f b6 1b 31
RSP: 0018:ffffc900040dfa00 EFLAGS: 00010203
RAX: 0000000000000198 RBX: 0000000000000cc5 RCX: ffff88802c51bc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9ac50c80
RBP: ffffc900040dfb50 R08: ffffffff905fc777 R09: 1ffffffff20bf8ee
R10: dffffc0000000000 R11: fffffbfff20bf8ef R12: dffffc0000000000
R13: 0000000000000000 R14: 00002000000000c0 R15: 1ffff9200081bf48
FS: 00005555769f2380(0000) GS:ffff888125099000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f1aa431000 CR3: 000000007cb9a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 03 00 add (%rax),%eax
2: 00 8b b4 24 c4 00 add %cl,0xc424b4(%rbx)
8: 00 00 add %al,(%rax)
a: 48 8b 7c 24 18 mov 0x18(%rsp),%rdi
f: e8 18 a3 25 ff call 0xff25a32c
14: 49 89 c5 mov %rax,%r13
17: 48 8d 98 c5 0c 00 00 lea 0xcc5(%rax),%rbx
1e: 48 89 d8 mov %rbx,%rax
21: 48 c1 e8 03 shr $0x3,%rax
25: 48 89 44 24 38 mov %rax,0x38(%rsp)
* 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 03 03 00 00 jne 0x33a
37: 48 89 5c 24 28 mov %rbx,0x28(%rsp)
3c: 0f b6 1b movzbl (%rbx),%ebx
3f: 31 .byte 0x31