Extracting prog: 25.353451939s
Minimizing prog: 13m44.801073126s
Simplifying prog options: 0s
Extracting C: 1m11.099514886s
Simplifying C: 3m4.68173628s


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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-connect$unix-ioctl$BTRFS_IOC_DEV_INFO-ioctl$BTRFS_IOC_GET_DEV_STATS-syz_mount_image$vfat-syz_open_dev$vcsu-sendto-setxattr$trusted_overlay_opaque-bpf$OBJ_GET_PROG-open
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
connect$unix(0xffffffffffffffff, 0x0, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={<r2=>0x0, "405a845ce24d4121e5c83213c5104d3e"})
ioctl$BTRFS_IOC_GET_DEV_STATS(r0, 0xc4089434, &(0x7f0000001840)={r2, 0x3, 0x117f34eed0894b00, [0x8001, 0x100, 0x2, 0x6, 0x1], [0x3, 0x5, 0xa, 0x0, 0x800, 0xff, 0x400, 0x6, 0x6, 0x8, 0xbf9a1f3, 0xfffffffffffffffa, 0x5, 0x4, 0xb, 0x2000000000, 0x64d7, 0xf, 0x3, 0x100000001, 0x7fffffffffffffff, 0x0, 0x4, 0x1, 0xec, 0x1, 0x5, 0x7, 0x4, 0x0, 0x2, 0x1, 0x8, 0x81, 0x9, 0x7, 0xffffffffffffffff, 0x3, 0xff, 0x102, 0x6, 0x8, 0x0, 0xffffffffffffffff, 0x2, 0x7fffffff, 0x5, 0xfff, 0x10000, 0x5, 0xda44, 0x1, 0x5, 0x51b9, 0x0, 0x8, 0x6, 0x40000000000000, 0x5, 0x10, 0x3b, 0x3, 0x8000, 0x5, 0xfffffffffffffff9, 0x9, 0x9, 0xe0bc, 0x8, 0x5dc5, 0x5, 0x7, 0x3, 0xb4, 0x4, 0x5800000000000000, 0x3, 0x2cc7, 0x2, 0x7fffffff, 0x5, 0x8, 0x1, 0x11, 0x3, 0x2, 0x8, 0x7, 0x4, 0x400, 0x2, 0x5, 0x4, 0x0, 0x0, 0x4f, 0x7c54, 0x400, 0x8, 0x6, 0x1e540000000000, 0x5, 0x733, 0x5, 0x8, 0x7f, 0x6, 0x0, 0x7, 0xffffffffffffffff, 0x5000000000000000, 0x72, 0x800, 0x200000, 0x100000000, 0x10, 0x1000, 0xfff, 0x5313e1cd, 0x7ff, 0x8]})
r3 = syz_mount_image$vfat(&(0x7f0000000140), &(0x7f0000000000)='./file1\x00', 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='nfs,dos1xfloppy,sys_immutable,nonumtail=0,utf8=1,nonumtail=0,uni_xlate=1,uni_xlate=1,utf8=0,iocharset=cp869,rodir,uid=', @ANYRES8=r0, @ANYRESOCT=r0], 0x1, 0x38c, &(0x7f0000000380)="$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")
r4 = syz_open_dev$vcsu(&(0x7f0000000080), 0x6, 0x101080)
sendto(r4, &(0x7f0000000240)="ecfc1229f9b0d5c7c18ad48a899ffeb12a7cfc77e3a487d2c1e05643977f5677f10205d4487af08ca7f9769d80b1bb19c43ef926726aac55c9eff100b53dc0c49d5523f5190d22c62388f9797d93ecf894198284fc92455bc74c01cb0fb9612fa5b7f7b4b8a50d71da1b2ddda59e376896c2c2c490b7c57a35f06e46f5aa7e3977bf58c2a895f3a75471e8d782704110bb202f18d61bcce6743bd95c466af6c0bd5d2454300573b06d4928a56da787", 0xaf, 0x24040882, &(0x7f00000007c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r0, 0x1, 0x3, 0x3, 0x4, {0xa, 0x4e24, 0x7, @private0={0xfc, 0x0, '\x00', 0x1}, 0x100}}}, 0x80)
setxattr$trusted_overlay_opaque(&(0x7f0000000100)='./bus\x00', &(0x7f0000000340), &(0x7f0000000740), 0x2, 0x2)
bpf$OBJ_GET_PROG(0x7, &(0x7f00000000c0)=@o_path={&(0x7f0000000780)='./file0\x00', 0x0, 0x742603be37aeb2cc, r3}, 0x18)
open(&(0x7f0000000040)='./bus\x00', 0x1c1242, 0x0)

program crashed: KASAN: use-after-free Read in l2tp_tunnel_del_work
single: successfully extracted reproducer
found reproducer with 15 syscalls
minimizing guilty program
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-connect$unix-ioctl$BTRFS_IOC_DEV_INFO-ioctl$BTRFS_IOC_GET_DEV_STATS-syz_mount_image$vfat-syz_open_dev$vcsu-sendto-setxattr$trusted_overlay_opaque-bpf$OBJ_GET_PROG
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
connect$unix(0xffffffffffffffff, 0x0, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={<r2=>0x0, "405a845ce24d4121e5c83213c5104d3e"})
ioctl$BTRFS_IOC_GET_DEV_STATS(r0, 0xc4089434, &(0x7f0000001840)={r2, 0x3, 0x117f34eed0894b00, [0x8001, 0x100, 0x2, 0x6, 0x1], [0x3, 0x5, 0xa, 0x0, 0x800, 0xff, 0x400, 0x6, 0x6, 0x8, 0xbf9a1f3, 0xfffffffffffffffa, 0x5, 0x4, 0xb, 0x2000000000, 0x64d7, 0xf, 0x3, 0x100000001, 0x7fffffffffffffff, 0x0, 0x4, 0x1, 0xec, 0x1, 0x5, 0x7, 0x4, 0x0, 0x2, 0x1, 0x8, 0x81, 0x9, 0x7, 0xffffffffffffffff, 0x3, 0xff, 0x102, 0x6, 0x8, 0x0, 0xffffffffffffffff, 0x2, 0x7fffffff, 0x5, 0xfff, 0x10000, 0x5, 0xda44, 0x1, 0x5, 0x51b9, 0x0, 0x8, 0x6, 0x40000000000000, 0x5, 0x10, 0x3b, 0x3, 0x8000, 0x5, 0xfffffffffffffff9, 0x9, 0x9, 0xe0bc, 0x8, 0x5dc5, 0x5, 0x7, 0x3, 0xb4, 0x4, 0x5800000000000000, 0x3, 0x2cc7, 0x2, 0x7fffffff, 0x5, 0x8, 0x1, 0x11, 0x3, 0x2, 0x8, 0x7, 0x4, 0x400, 0x2, 0x5, 0x4, 0x0, 0x0, 0x4f, 0x7c54, 0x400, 0x8, 0x6, 0x1e540000000000, 0x5, 0x733, 0x5, 0x8, 0x7f, 0x6, 0x0, 0x7, 0xffffffffffffffff, 0x5000000000000000, 0x72, 0x800, 0x200000, 0x100000000, 0x10, 0x1000, 0xfff, 0x5313e1cd, 0x7ff, 0x8]})
r3 = syz_mount_image$vfat(&(0x7f0000000140), &(0x7f0000000000)='./file1\x00', 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='nfs,dos1xfloppy,sys_immutable,nonumtail=0,utf8=1,nonumtail=0,uni_xlate=1,uni_xlate=1,utf8=0,iocharset=cp869,rodir,uid=', @ANYRES8=r0, @ANYRESOCT=r0], 0x1, 0x38c, &(0x7f0000000380)="$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")
r4 = syz_open_dev$vcsu(&(0x7f0000000080), 0x6, 0x101080)
sendto(r4, &(0x7f0000000240)="ecfc1229f9b0d5c7c18ad48a899ffeb12a7cfc77e3a487d2c1e05643977f5677f10205d4487af08ca7f9769d80b1bb19c43ef926726aac55c9eff100b53dc0c49d5523f5190d22c62388f9797d93ecf894198284fc92455bc74c01cb0fb9612fa5b7f7b4b8a50d71da1b2ddda59e376896c2c2c490b7c57a35f06e46f5aa7e3977bf58c2a895f3a75471e8d782704110bb202f18d61bcce6743bd95c466af6c0bd5d2454300573b06d4928a56da787", 0xaf, 0x24040882, &(0x7f00000007c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r0, 0x1, 0x3, 0x3, 0x4, {0xa, 0x4e24, 0x7, @private0={0xfc, 0x0, '\x00', 0x1}, 0x100}}}, 0x80)
setxattr$trusted_overlay_opaque(&(0x7f0000000100)='./bus\x00', &(0x7f0000000340), &(0x7f0000000740), 0x2, 0x2)
bpf$OBJ_GET_PROG(0x7, &(0x7f00000000c0)=@o_path={&(0x7f0000000780)='./file0\x00', 0x0, 0x742603be37aeb2cc, r3}, 0x18)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-connect$unix-ioctl$BTRFS_IOC_DEV_INFO-ioctl$BTRFS_IOC_GET_DEV_STATS-syz_mount_image$vfat-syz_open_dev$vcsu-sendto-setxattr$trusted_overlay_opaque
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
connect$unix(0xffffffffffffffff, 0x0, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={<r2=>0x0, "405a845ce24d4121e5c83213c5104d3e"})
ioctl$BTRFS_IOC_GET_DEV_STATS(r0, 0xc4089434, &(0x7f0000001840)={r2, 0x3, 0x117f34eed0894b00, [0x8001, 0x100, 0x2, 0x6, 0x1], [0x3, 0x5, 0xa, 0x0, 0x800, 0xff, 0x400, 0x6, 0x6, 0x8, 0xbf9a1f3, 0xfffffffffffffffa, 0x5, 0x4, 0xb, 0x2000000000, 0x64d7, 0xf, 0x3, 0x100000001, 0x7fffffffffffffff, 0x0, 0x4, 0x1, 0xec, 0x1, 0x5, 0x7, 0x4, 0x0, 0x2, 0x1, 0x8, 0x81, 0x9, 0x7, 0xffffffffffffffff, 0x3, 0xff, 0x102, 0x6, 0x8, 0x0, 0xffffffffffffffff, 0x2, 0x7fffffff, 0x5, 0xfff, 0x10000, 0x5, 0xda44, 0x1, 0x5, 0x51b9, 0x0, 0x8, 0x6, 0x40000000000000, 0x5, 0x10, 0x3b, 0x3, 0x8000, 0x5, 0xfffffffffffffff9, 0x9, 0x9, 0xe0bc, 0x8, 0x5dc5, 0x5, 0x7, 0x3, 0xb4, 0x4, 0x5800000000000000, 0x3, 0x2cc7, 0x2, 0x7fffffff, 0x5, 0x8, 0x1, 0x11, 0x3, 0x2, 0x8, 0x7, 0x4, 0x400, 0x2, 0x5, 0x4, 0x0, 0x0, 0x4f, 0x7c54, 0x400, 0x8, 0x6, 0x1e540000000000, 0x5, 0x733, 0x5, 0x8, 0x7f, 0x6, 0x0, 0x7, 0xffffffffffffffff, 0x5000000000000000, 0x72, 0x800, 0x200000, 0x100000000, 0x10, 0x1000, 0xfff, 0x5313e1cd, 0x7ff, 0x8]})
syz_mount_image$vfat(&(0x7f0000000140), &(0x7f0000000000)='./file1\x00', 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='nfs,dos1xfloppy,sys_immutable,nonumtail=0,utf8=1,nonumtail=0,uni_xlate=1,uni_xlate=1,utf8=0,iocharset=cp869,rodir,uid=', @ANYRES8=r0, @ANYRESOCT=r0], 0x1, 0x38c, &(0x7f0000000380)="$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")
r3 = syz_open_dev$vcsu(&(0x7f0000000080), 0x6, 0x101080)
sendto(r3, &(0x7f0000000240)="ecfc1229f9b0d5c7c18ad48a899ffeb12a7cfc77e3a487d2c1e05643977f5677f10205d4487af08ca7f9769d80b1bb19c43ef926726aac55c9eff100b53dc0c49d5523f5190d22c62388f9797d93ecf894198284fc92455bc74c01cb0fb9612fa5b7f7b4b8a50d71da1b2ddda59e376896c2c2c490b7c57a35f06e46f5aa7e3977bf58c2a895f3a75471e8d782704110bb202f18d61bcce6743bd95c466af6c0bd5d2454300573b06d4928a56da787", 0xaf, 0x24040882, &(0x7f00000007c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r0, 0x1, 0x3, 0x3, 0x4, {0xa, 0x4e24, 0x7, @private0={0xfc, 0x0, '\x00', 0x1}, 0x100}}}, 0x80)
setxattr$trusted_overlay_opaque(&(0x7f0000000100)='./bus\x00', &(0x7f0000000340), &(0x7f0000000740), 0x2, 0x2)

program crashed: KASAN: use-after-free Read in l2tp_tunnel_del_work
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-connect$unix-ioctl$BTRFS_IOC_DEV_INFO-ioctl$BTRFS_IOC_GET_DEV_STATS-syz_mount_image$vfat-syz_open_dev$vcsu-sendto
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
connect$unix(0xffffffffffffffff, 0x0, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={<r2=>0x0, "405a845ce24d4121e5c83213c5104d3e"})
ioctl$BTRFS_IOC_GET_DEV_STATS(r0, 0xc4089434, &(0x7f0000001840)={r2, 0x3, 0x117f34eed0894b00, [0x8001, 0x100, 0x2, 0x6, 0x1], [0x3, 0x5, 0xa, 0x0, 0x800, 0xff, 0x400, 0x6, 0x6, 0x8, 0xbf9a1f3, 0xfffffffffffffffa, 0x5, 0x4, 0xb, 0x2000000000, 0x64d7, 0xf, 0x3, 0x100000001, 0x7fffffffffffffff, 0x0, 0x4, 0x1, 0xec, 0x1, 0x5, 0x7, 0x4, 0x0, 0x2, 0x1, 0x8, 0x81, 0x9, 0x7, 0xffffffffffffffff, 0x3, 0xff, 0x102, 0x6, 0x8, 0x0, 0xffffffffffffffff, 0x2, 0x7fffffff, 0x5, 0xfff, 0x10000, 0x5, 0xda44, 0x1, 0x5, 0x51b9, 0x0, 0x8, 0x6, 0x40000000000000, 0x5, 0x10, 0x3b, 0x3, 0x8000, 0x5, 0xfffffffffffffff9, 0x9, 0x9, 0xe0bc, 0x8, 0x5dc5, 0x5, 0x7, 0x3, 0xb4, 0x4, 0x5800000000000000, 0x3, 0x2cc7, 0x2, 0x7fffffff, 0x5, 0x8, 0x1, 0x11, 0x3, 0x2, 0x8, 0x7, 0x4, 0x400, 0x2, 0x5, 0x4, 0x0, 0x0, 0x4f, 0x7c54, 0x400, 0x8, 0x6, 0x1e540000000000, 0x5, 0x733, 0x5, 0x8, 0x7f, 0x6, 0x0, 0x7, 0xffffffffffffffff, 0x5000000000000000, 0x72, 0x800, 0x200000, 0x100000000, 0x10, 0x1000, 0xfff, 0x5313e1cd, 0x7ff, 0x8]})
syz_mount_image$vfat(&(0x7f0000000140), &(0x7f0000000000)='./file1\x00', 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='nfs,dos1xfloppy,sys_immutable,nonumtail=0,utf8=1,nonumtail=0,uni_xlate=1,uni_xlate=1,utf8=0,iocharset=cp869,rodir,uid=', @ANYRES8=r0, @ANYRESOCT=r0], 0x1, 0x38c, &(0x7f0000000380)="$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")
r3 = syz_open_dev$vcsu(&(0x7f0000000080), 0x6, 0x101080)
sendto(r3, &(0x7f0000000240)="ecfc1229f9b0d5c7c18ad48a899ffeb12a7cfc77e3a487d2c1e05643977f5677f10205d4487af08ca7f9769d80b1bb19c43ef926726aac55c9eff100b53dc0c49d5523f5190d22c62388f9797d93ecf894198284fc92455bc74c01cb0fb9612fa5b7f7b4b8a50d71da1b2ddda59e376896c2c2c490b7c57a35f06e46f5aa7e3977bf58c2a895f3a75471e8d782704110bb202f18d61bcce6743bd95c466af6c0bd5d2454300573b06d4928a56da787", 0xaf, 0x24040882, &(0x7f00000007c0)=@pppol2tpv3in6={0x18, 0x1, {0x0, r0, 0x1, 0x3, 0x3, 0x4, {0xa, 0x4e24, 0x7, @private0={0xfc, 0x0, '\x00', 0x1}, 0x100}}}, 0x80)

program crashed: KASAN: use-after-free Read in l2tp_tunnel_del_work
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-connect$unix-ioctl$BTRFS_IOC_DEV_INFO-ioctl$BTRFS_IOC_GET_DEV_STATS-syz_mount_image$vfat-syz_open_dev$vcsu
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
connect$unix(0xffffffffffffffff, 0x0, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={<r2=>0x0, "405a845ce24d4121e5c83213c5104d3e"})
ioctl$BTRFS_IOC_GET_DEV_STATS(r0, 0xc4089434, &(0x7f0000001840)={r2, 0x3, 0x117f34eed0894b00, [0x8001, 0x100, 0x2, 0x6, 0x1], [0x3, 0x5, 0xa, 0x0, 0x800, 0xff, 0x400, 0x6, 0x6, 0x8, 0xbf9a1f3, 0xfffffffffffffffa, 0x5, 0x4, 0xb, 0x2000000000, 0x64d7, 0xf, 0x3, 0x100000001, 0x7fffffffffffffff, 0x0, 0x4, 0x1, 0xec, 0x1, 0x5, 0x7, 0x4, 0x0, 0x2, 0x1, 0x8, 0x81, 0x9, 0x7, 0xffffffffffffffff, 0x3, 0xff, 0x102, 0x6, 0x8, 0x0, 0xffffffffffffffff, 0x2, 0x7fffffff, 0x5, 0xfff, 0x10000, 0x5, 0xda44, 0x1, 0x5, 0x51b9, 0x0, 0x8, 0x6, 0x40000000000000, 0x5, 0x10, 0x3b, 0x3, 0x8000, 0x5, 0xfffffffffffffff9, 0x9, 0x9, 0xe0bc, 0x8, 0x5dc5, 0x5, 0x7, 0x3, 0xb4, 0x4, 0x5800000000000000, 0x3, 0x2cc7, 0x2, 0x7fffffff, 0x5, 0x8, 0x1, 0x11, 0x3, 0x2, 0x8, 0x7, 0x4, 0x400, 0x2, 0x5, 0x4, 0x0, 0x0, 0x4f, 0x7c54, 0x400, 0x8, 0x6, 0x1e540000000000, 0x5, 0x733, 0x5, 0x8, 0x7f, 0x6, 0x0, 0x7, 0xffffffffffffffff, 0x5000000000000000, 0x72, 0x800, 0x200000, 0x100000000, 0x10, 0x1000, 0xfff, 0x5313e1cd, 0x7ff, 0x8]})
syz_mount_image$vfat(&(0x7f0000000140), &(0x7f0000000000)='./file1\x00', 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='nfs,dos1xfloppy,sys_immutable,nonumtail=0,utf8=1,nonumtail=0,uni_xlate=1,uni_xlate=1,utf8=0,iocharset=cp869,rodir,uid=', @ANYRES8=r0, @ANYRESOCT=r0], 0x1, 0x38c, &(0x7f0000000380)="$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")
syz_open_dev$vcsu(&(0x7f0000000080), 0x6, 0x101080)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-connect$unix-ioctl$BTRFS_IOC_DEV_INFO-ioctl$BTRFS_IOC_GET_DEV_STATS-syz_mount_image$vfat
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
connect$unix(0xffffffffffffffff, 0x0, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={<r2=>0x0, "405a845ce24d4121e5c83213c5104d3e"})
ioctl$BTRFS_IOC_GET_DEV_STATS(r0, 0xc4089434, &(0x7f0000001840)={r2, 0x3, 0x117f34eed0894b00, [0x8001, 0x100, 0x2, 0x6, 0x1], [0x3, 0x5, 0xa, 0x0, 0x800, 0xff, 0x400, 0x6, 0x6, 0x8, 0xbf9a1f3, 0xfffffffffffffffa, 0x5, 0x4, 0xb, 0x2000000000, 0x64d7, 0xf, 0x3, 0x100000001, 0x7fffffffffffffff, 0x0, 0x4, 0x1, 0xec, 0x1, 0x5, 0x7, 0x4, 0x0, 0x2, 0x1, 0x8, 0x81, 0x9, 0x7, 0xffffffffffffffff, 0x3, 0xff, 0x102, 0x6, 0x8, 0x0, 0xffffffffffffffff, 0x2, 0x7fffffff, 0x5, 0xfff, 0x10000, 0x5, 0xda44, 0x1, 0x5, 0x51b9, 0x0, 0x8, 0x6, 0x40000000000000, 0x5, 0x10, 0x3b, 0x3, 0x8000, 0x5, 0xfffffffffffffff9, 0x9, 0x9, 0xe0bc, 0x8, 0x5dc5, 0x5, 0x7, 0x3, 0xb4, 0x4, 0x5800000000000000, 0x3, 0x2cc7, 0x2, 0x7fffffff, 0x5, 0x8, 0x1, 0x11, 0x3, 0x2, 0x8, 0x7, 0x4, 0x400, 0x2, 0x5, 0x4, 0x0, 0x0, 0x4f, 0x7c54, 0x400, 0x8, 0x6, 0x1e540000000000, 0x5, 0x733, 0x5, 0x8, 0x7f, 0x6, 0x0, 0x7, 0xffffffffffffffff, 0x5000000000000000, 0x72, 0x800, 0x200000, 0x100000000, 0x10, 0x1000, 0xfff, 0x5313e1cd, 0x7ff, 0x8]})
syz_mount_image$vfat(&(0x7f0000000140), &(0x7f0000000000)='./file1\x00', 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='nfs,dos1xfloppy,sys_immutable,nonumtail=0,utf8=1,nonumtail=0,uni_xlate=1,uni_xlate=1,utf8=0,iocharset=cp869,rodir,uid=', @ANYRES8=r0, @ANYRESOCT=r0], 0x1, 0x38c, &(0x7f0000000380)="$eJzs3U+IW8UfAPBv+pLdTeHX3cMPioISvQm69A8eFA9byhaKuaiEVg9isFuUzVrYYHB7aLpexKPgUUHwIh704KFnERTx5sGrVbQqHrS3gsWRJC/Ja5PdrtRtXfx8DuWb78y8mXmdTd6+R2ZfuJ5Wz1Ti7NWrV2JurhTlpeNLca0UC5HF0MWYNDMlBwDsDddSit/TwCiZTYnGSndoaADALul9/qduMfP659vVTz79AWDPy3//r25XZ24y9eMTvX/P7d64AIDdM3H//8Fx2f2Dx/yFR/3lqQ8EAIC95Zlnn3vyWD3i6WptLmLtjU6j04jHx+XHzsbL0YqVOBTzcT1icKGQUjr9ff/FiZP15UO1Wq0bPy1EIyLe6zQi1rqdxuBK4VjWbz8bh2M+FvL2+dVGSik78Ul9+XCtLyIudvv9x1qp06jE/rz/b/fHShyJWvx/on3EyfrykVp+gMbasH03YnN836I3/sWYj69fjHPRijPVU5HS8LKmvnzhcK12PNVvaN9pzMaZ0VmYcgcEAAAAAAAAAAAAAAAAAAAAAABuw2JtZGG0/00a79+zuDilvL8/zqB9vj/Q5mB/oDSbIqXfXnuk8WY22KtnuD/QzfvzdBrl2Hd3pw4AAAAAAAAAAAAAAAAAAAD/Gu2NmWi2Wivr7Y3zq8Wgu97e2BcRvcwrX370WTUm69wiKOd9FIpqeer8ajNlw8opu6FOHmS9zoeZDy+NRlysMzuaxdRh9IrbM1vU+d8DP7wzztyXDY/857hOFtMnmN00jGFQiYi1AxFRjRgVVcZT3vKMHc2DI7c4q5dTSlsd58Lzk62iFFH++/9x2wepF3xx5aV7jrYPPtrPfJoGHnp4/tTlt9//ZbXZ6vXc0/pgZr19Pa0289fTF9tKqbxFp1lh/ZTyc1gqroTydkPdvDHTzL759fS9b321s5mmYubVKXWywXQ+Xm9vlPKflH7RzCDo5W5qVW2dzCLOL0XxOJUpi//2gqmL7eC7S81LF777eafHKbxJjDfqqP7T7z8AAAAAAAAAAAAAAAAAAMBY4bviufzLvpXtWj32VB7M7e7oAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAODOGP/9/0KwOZHZSfBHNyaLZlfW2xEH7vY0AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD4j/srAAD//x9pY8c=")

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-connect$unix-ioctl$BTRFS_IOC_DEV_INFO-ioctl$BTRFS_IOC_GET_DEV_STATS
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
connect$unix(0xffffffffffffffff, 0x0, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={<r2=>0x0, "405a845ce24d4121e5c83213c5104d3e"})
ioctl$BTRFS_IOC_GET_DEV_STATS(r0, 0xc4089434, &(0x7f0000001840)={r2, 0x3, 0x117f34eed0894b00, [0x8001, 0x100, 0x2, 0x6, 0x1], [0x3, 0x5, 0xa, 0x0, 0x800, 0xff, 0x400, 0x6, 0x6, 0x8, 0xbf9a1f3, 0xfffffffffffffffa, 0x5, 0x4, 0xb, 0x2000000000, 0x64d7, 0xf, 0x3, 0x100000001, 0x7fffffffffffffff, 0x0, 0x4, 0x1, 0xec, 0x1, 0x5, 0x7, 0x4, 0x0, 0x2, 0x1, 0x8, 0x81, 0x9, 0x7, 0xffffffffffffffff, 0x3, 0xff, 0x102, 0x6, 0x8, 0x0, 0xffffffffffffffff, 0x2, 0x7fffffff, 0x5, 0xfff, 0x10000, 0x5, 0xda44, 0x1, 0x5, 0x51b9, 0x0, 0x8, 0x6, 0x40000000000000, 0x5, 0x10, 0x3b, 0x3, 0x8000, 0x5, 0xfffffffffffffff9, 0x9, 0x9, 0xe0bc, 0x8, 0x5dc5, 0x5, 0x7, 0x3, 0xb4, 0x4, 0x5800000000000000, 0x3, 0x2cc7, 0x2, 0x7fffffff, 0x5, 0x8, 0x1, 0x11, 0x3, 0x2, 0x8, 0x7, 0x4, 0x400, 0x2, 0x5, 0x4, 0x0, 0x0, 0x4f, 0x7c54, 0x400, 0x8, 0x6, 0x1e540000000000, 0x5, 0x733, 0x5, 0x8, 0x7f, 0x6, 0x0, 0x7, 0xffffffffffffffff, 0x5000000000000000, 0x72, 0x800, 0x200000, 0x100000000, 0x10, 0x1000, 0xfff, 0x5313e1cd, 0x7ff, 0x8]})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-connect$unix-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
connect$unix(0xffffffffffffffff, 0x0, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={0x0, "405a845ce24d4121e5c83213c5104d3e"})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-connect$unix
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
connect$unix(0xffffffffffffffff, 0x0, 0x0)

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
connect$pppl2tp(r0, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x4e21, @dev={0xac, 0x14, 0x14, 0x11}}, 0x2, 0x1, 0x4, 0x2}}, 0x26)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={0x0, "405a845ce24d4121e5c83213c5104d3e"})

program crashed: KASAN: use-after-free Write in rcu_segcblist_enqueue
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={0x0, "405a845ce24d4121e5c83213c5104d3e"})

program crashed: KASAN: use-after-free Write in pppol2tp_release
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-socket$inet6_udp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={0x0, "405a845ce24d4121e5c83213c5104d3e"})

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$pppl2tp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, 0xffffffffffffffff, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={0x0, "405a845ce24d4121e5c83213c5104d3e"})

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socketpair$unix-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
r0 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(0xffffffffffffffff, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r0, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$BTRFS_IOC_DEV_INFO(0xffffffffffffffff, 0xd000941e, &(0x7f0000000840)={0x0, "405a845ce24d4121e5c83213c5104d3e"})

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbeeb, 0x8031, 0xffffffffffffffff, 0x9a5eb000)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={0x0, "405a845ce24d4121e5c83213c5104d3e"})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={0x0, "405a845ce24d4121e5c83213c5104d3e"})

program crashed: KASAN: use-after-free Write in rcu_segcblist_enqueue
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, 0x0, 0x0)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, &(0x7f0000000840)={0x0, "405a845ce24d4121e5c83213c5104d3e"})

program did not crash
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, 0x0)

program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue
extracting C reproducer
testing compiled C 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
program crashed: KASAN: use-after-free Write in pppol2tp_release
simplifying C reproducer
testing compiled C program (duration=30s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=30s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=30s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing compiled C program (duration=30s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
program did not crash
testing compiled C program (duration=30s, {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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=30s, {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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
program did not crash
testing program (duration=30s, {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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, 0x0)

program crashed: KASAN: use-after-free Write in rcu_segcblist_enqueue
validation run: crashed=true
testing program (duration=30s, {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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, 0x0)

program crashed: KASAN: use-after-free Write in rcu_segcblist_enqueue
validation run: crashed=true
testing program (duration=30s, {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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_DEV_INFO
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$BTRFS_IOC_DEV_INFO(r0, 0xd000941e, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
validation run: crashed=true
reproducing took 19m42.319067212s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: use-after-free in atomic64_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:1515 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/asm-generic/atomic-long.h:443 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:173 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 kernel/locking/mutex.c:298
Write of size 8 at addr ffff888110bdd150 by task syz.2.17/392

CPU: 1 PID: 392 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x100/0x140 mm/kasan/report.c:452
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic64_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:1515 [inline]
 atomic_long_try_cmpxchg_acquire include/asm-generic/atomic-long.h:443 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:173 [inline]
 mutex_lock+0x85/0xf0 kernel/locking/mutex.c:298
 pppol2tp_release+0x178/0x2b0 net/l2tp/l2tp_ppp.c:442
 __sock_release net/socket.c:597 [inline]
 sock_close+0xb8/0x200 net/socket.c:1287
 __fput+0x2dc/0x730 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:202
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:277
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f5264efd1d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc348f5dc8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffc348f5eb0 RCX: 00007f5264efd1d9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00000000000069ba R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b32b20000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5265184fac R14: 00007f5265184fa8 R15: 00007f5265184fa0

Allocated by task 392:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 ____kasan_kmalloc mm/kasan/common.c:509 [inline]
 __kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:518
 kasan_kmalloc include/linux/kasan.h:254 [inline]
 __kmalloc+0x19f/0x330 mm/slub.c:4038
 kmalloc include/linux/slab.h:560 [inline]
 kzalloc include/linux/slab.h:667 [inline]
 l2tp_session_create+0x39/0xb60 net/l2tp/l2tp_core.c:1616
 pppol2tp_connect+0xbf5/0x1640 net/l2tp/l2tp_ppp.c:772
 __sys_connect_file net/socket.c:1867 [inline]
 __sys_connect+0x3ce/0x450 net/socket.c:1884
 __do_sys_connect net/socket.c:1894 [inline]
 __se_sys_connect net/socket.c:1891 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:1891
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Freed by task 392:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1600 [inline]
 slab_free_freelist_hook+0xc5/0x190 mm/slub.c:1626
 slab_free mm/slub.c:3208 [inline]
 kfree+0xc0/0x270 mm/slub.c:4196
 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline]
 l2tp_session_put+0xb2/0x1a0 net/l2tp/l2tp_core.c:193
 l2tp_session_delete+0x3a9/0x4a0 net/l2tp/l2tp_core.c:1589
 pppol2tp_release+0x169/0x2b0 net/l2tp/l2tp_ppp.c:439
 __sock_release net/socket.c:597 [inline]
 sock_close+0xb8/0x200 net/socket.c:1287
 __fput+0x2dc/0x730 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:202
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:277
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff888110bdd000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 336 bytes inside of
 512-byte region [ffff888110bdd000, ffff888110bdd200)
The buggy address belongs to the page:
page:ffffea000442f700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110bdc
head:ffffea000442f700 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 382, ts 27071295631, free_ts 27068107220
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x176/0x190 mm/page_alloc.c:2462
 get_page_from_freelist+0x225f/0x23f0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x29a/0x640 mm/page_alloc.c:5384
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1813 [inline]
 new_slab+0x84/0x3f0 mm/slub.c:1874
 new_slab_objects mm/slub.c:2632 [inline]
 ___slab_alloc+0x2f8/0x4c0 mm/slub.c:2796
 __slab_alloc+0x63/0xa0 mm/slub.c:2836
 slab_alloc_node mm/slub.c:2918 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 __kmalloc+0x1f9/0x330 mm/slub.c:4034
 kmalloc include/linux/slab.h:560 [inline]
 kzalloc include/linux/slab.h:667 [inline]
 neigh_alloc net/core/neighbour.c:439 [inline]
 ___neigh_create+0x6ec/0x1a70 net/core/neighbour.c:592
 __neigh_create+0x31/0x40 net/core/neighbour.c:680
 ip6_finish_output2+0x8fe/0x1540 net/ipv6/ip6_output.c:129
 __ip6_finish_output+0x5fd/0x790 net/ipv6/ip6_output.c:203
 ip6_finish_output+0x33/0x1e0 net/ipv6/ip6_output.c:213
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1fa/0x420 net/ipv6/ip6_output.c:236
 dst_output include/net/dst.h:451 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ndisc_send_skb+0x721/0xbc0 net/ipv6/ndisc.c:513
 ndisc_send_rs+0x711/0x960 net/ipv6/ndisc.c:707
 addrconf_dad_completed+0x945/0xe30 net/ipv6/addrconf.c:4293
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 __free_pages_ok+0x80b/0x830 mm/page_alloc.c:1629
 free_the_page mm/page_alloc.c:5445 [inline]
 __free_pages+0xd8/0x390 mm/page_alloc.c:5454
 __free_slab+0xcf/0x190 mm/slub.c:1899
 free_slab mm/slub.c:1914 [inline]
 discard_slab mm/slub.c:1920 [inline]
 unfreeze_partials+0x150/0x180 mm/slub.c:2415
 put_cpu_partial+0xc1/0x180 mm/slub.c:2451
 __slab_free+0x2c9/0x3a0 mm/slub.c:3100
 do_slab_free mm/slub.c:3196 [inline]
 ___cache_free+0x10e/0x130 mm/slub.c:3215
 qlink_free+0x50/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x5f/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x14a/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:440
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x5d/0x2f0 mm/slab.h:580
 slab_alloc_node mm/slub.c:2952 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 __kmalloc+0x17b/0x330 mm/slub.c:4034
 kmalloc include/linux/slab.h:560 [inline]
 kzalloc include/linux/slab.h:667 [inline]
 fib6_info_alloc+0x34/0xe0 net/ipv6/ip6_fib.c:154
 ip6_route_info_create+0x4c7/0x1450 net/ipv6/route.c:3671
 ip6_route_add+0x27/0x130 net/ipv6/route.c:3767

Memory state around the buggy address:
 ffff888110bdd000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888110bdd080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888110bdd100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff888110bdd180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888110bdd200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: use-after-free in atomic64_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:1515 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/asm-generic/atomic-long.h:443 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:173 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x85/0xf0 kernel/locking/mutex.c:298
Write of size 8 at addr ffff888110bdd150 by task syz.2.17/392

CPU: 1 PID: 392 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0x100/0x140 mm/kasan/report.c:452
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic64_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:1515 [inline]
 atomic_long_try_cmpxchg_acquire include/asm-generic/atomic-long.h:443 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:173 [inline]
 mutex_lock+0x85/0xf0 kernel/locking/mutex.c:298
 pppol2tp_release+0x178/0x2b0 net/l2tp/l2tp_ppp.c:442
 __sock_release net/socket.c:597 [inline]
 sock_close+0xb8/0x200 net/socket.c:1287
 __fput+0x2dc/0x730 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:202
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:277
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f5264efd1d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc348f5dc8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffc348f5eb0 RCX: 00007f5264efd1d9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00000000000069ba R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b32b20000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5265184fac R14: 00007f5265184fa8 R15: 00007f5265184fa0

Allocated by task 392:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 ____kasan_kmalloc mm/kasan/common.c:509 [inline]
 __kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:518
 kasan_kmalloc include/linux/kasan.h:254 [inline]
 __kmalloc+0x19f/0x330 mm/slub.c:4038
 kmalloc include/linux/slab.h:560 [inline]
 kzalloc include/linux/slab.h:667 [inline]
 l2tp_session_create+0x39/0xb60 net/l2tp/l2tp_core.c:1616
 pppol2tp_connect+0xbf5/0x1640 net/l2tp/l2tp_ppp.c:772
 __sys_connect_file net/socket.c:1867 [inline]
 __sys_connect+0x3ce/0x450 net/socket.c:1884
 __do_sys_connect net/socket.c:1894 [inline]
 __se_sys_connect net/socket.c:1891 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:1891
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Freed by task 392:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1600 [inline]
 slab_free_freelist_hook+0xc5/0x190 mm/slub.c:1626
 slab_free mm/slub.c:3208 [inline]
 kfree+0xc0/0x270 mm/slub.c:4196
 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline]
 l2tp_session_put+0xb2/0x1a0 net/l2tp/l2tp_core.c:193
 l2tp_session_delete+0x3a9/0x4a0 net/l2tp/l2tp_core.c:1589
 pppol2tp_release+0x169/0x2b0 net/l2tp/l2tp_ppp.c:439
 __sock_release net/socket.c:597 [inline]
 sock_close+0xb8/0x200 net/socket.c:1287
 __fput+0x2dc/0x730 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:202
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:277
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff888110bdd000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 336 bytes inside of
 512-byte region [ffff888110bdd000, ffff888110bdd200)
The buggy address belongs to the page:
page:ffffea000442f700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110bdc
head:ffffea000442f700 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 382, ts 27071295631, free_ts 27068107220
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x176/0x190 mm/page_alloc.c:2462
 get_page_from_freelist+0x225f/0x23f0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x29a/0x640 mm/page_alloc.c:5384
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1813 [inline]
 new_slab+0x84/0x3f0 mm/slub.c:1874
 new_slab_objects mm/slub.c:2632 [inline]
 ___slab_alloc+0x2f8/0x4c0 mm/slub.c:2796
 __slab_alloc+0x63/0xa0 mm/slub.c:2836
 slab_alloc_node mm/slub.c:2918 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 __kmalloc+0x1f9/0x330 mm/slub.c:4034
 kmalloc include/linux/slab.h:560 [inline]
 kzalloc include/linux/slab.h:667 [inline]
 neigh_alloc net/core/neighbour.c:439 [inline]
 ___neigh_create+0x6ec/0x1a70 net/core/neighbour.c:592
 __neigh_create+0x31/0x40 net/core/neighbour.c:680
 ip6_finish_output2+0x8fe/0x1540 net/ipv6/ip6_output.c:129
 __ip6_finish_output+0x5fd/0x790 net/ipv6/ip6_output.c:203
 ip6_finish_output+0x33/0x1e0 net/ipv6/ip6_output.c:213
 NF_HOOK_COND include/linux/netfilter.h:288 [inline]
 ip6_output+0x1fa/0x420 net/ipv6/ip6_output.c:236
 dst_output include/net/dst.h:451 [inline]
 NF_HOOK include/linux/netfilter.h:299 [inline]
 ndisc_send_skb+0x721/0xbc0 net/ipv6/ndisc.c:513
 ndisc_send_rs+0x711/0x960 net/ipv6/ndisc.c:707
 addrconf_dad_completed+0x945/0xe30 net/ipv6/addrconf.c:4293
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 __free_pages_ok+0x80b/0x830 mm/page_alloc.c:1629
 free_the_page mm/page_alloc.c:5445 [inline]
 __free_pages+0xd8/0x390 mm/page_alloc.c:5454
 __free_slab+0xcf/0x190 mm/slub.c:1899
 free_slab mm/slub.c:1914 [inline]
 discard_slab mm/slub.c:1920 [inline]
 unfreeze_partials+0x150/0x180 mm/slub.c:2415
 put_cpu_partial+0xc1/0x180 mm/slub.c:2451
 __slab_free+0x2c9/0x3a0 mm/slub.c:3100
 do_slab_free mm/slub.c:3196 [inline]
 ___cache_free+0x10e/0x130 mm/slub.c:3215
 qlink_free+0x50/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x5f/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x14a/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:440
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x5d/0x2f0 mm/slab.h:580
 slab_alloc_node mm/slub.c:2952 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 __kmalloc+0x17b/0x330 mm/slub.c:4034
 kmalloc include/linux/slab.h:560 [inline]
 kzalloc include/linux/slab.h:667 [inline]
 fib6_info_alloc+0x34/0xe0 net/ipv6/ip6_fib.c:154
 ip6_route_info_create+0x4c7/0x1450 net/ipv6/route.c:3671
 ip6_route_add+0x27/0x130 net/ipv6/route.c:3767

Memory state around the buggy address:
 ffff888110bdd000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888110bdd080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888110bdd100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff888110bdd180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888110bdd200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================