Extracting prog: 25.914512028s
Minimizing prog: 17m54.554344123s
Simplifying prog options: 0s
Extracting C: 44.819583426s
Simplifying C: 2m52.836702823s


extracting reproducer from 69 programs
testing a last program of every proc
single: executing 19 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}}): socket$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-socket$inet6_udp-connect$pppl2tp-bind$inet6-syz_emit_ethernet-syz_emit_ethernet-connect$inet6-ioctl$ifreq_SIOCGIFINDEX_vcan-ioctl$ifreq_SIOCGIFINDEX_vcan-sendmmsg$inet6
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$eJzs3c9rG8ceAPDvylKcX+/FgRBeHo9HIIempJFjuz9S6CE9ljY00PacGlsxwXIULDnEbqDJobn0UkKhlAZK7+29hx5CLz32rwi0gVCCaaG9qKy88o9ItmVZrp3o84G1Z3ZXmp2d/Q6zGokNoG+dTP/kIk5ExGdJxJFV2/KRbTy5tN/ik1sT6ZJEvf7eb0kk2brm/kn2/1CW+U9E/PhJxJlca7nV+YXp8XK5NJvlh2sz14er8wtnr86MT5WmStdGx8bOvzI2+vprr/asri9e+uPLdx+8df7TU4tffPfo6L0kLsThbNvqemzJ4Jrc7dWZk/V6dk4KceGpl410Vdjelez2AdCVgSzOCxFxonCk0Ix64Pn3cUTUgT6VbDH+B/UX8JxojgOa9/Zd3wc/ox6/uXQD1Fr//NJnI7G/cW90cDFZc2eU3u8O9aD8tIzvf71/L11iO59DAGzR7TsRcS6fb+3/kqz/6965DvZ5ugz9H/xzHqTjn5daxz+DkVse/0Sb8c+hNrHbjc3jP/eoB8WsKx3/vdF2/Ls8aTU0kOX+1RjzFZIrV8ultG/7d0ScjsJgmt9oPuf84sP6ettWj//SJS2/ORbMjuNRfu0cU0yO18a3U+fVHt+J+G/b8W+y3P5Jm/ZPz8cHHZZxvHT//+tt27z+O6v+TcQLbdt/ZUYr2Xh+crhxPQw3r4pWv989/vN65bev/08/7EBV20rb/+DG9R9KVs/XVrdextf7/yqtt63b639f8n4jvS9bd3O8VpsdidiXvNO6fnTltc18c/+0/qdPtY//ja7/AxHxYYf1v3vs2/91X/+dldZ/ckvtv/XEw7c/+mq98jtr/5cbqdPZmk76v04PcDvnDgAAAAAAAPaaXEQcjiRXjP1ZOpcrFpe+33EsDubKlWrtzJXK3LXJaPxWdigKueZM95FV34cYyb4P28yPPpUfi4ijEfH5wIFGvjhRKU/uduUBAAAAAAAAAAAAAAAAAABgjzi0/Pv/WPP7/9QvA7t9dMCOyy89/xvoQ5s+8r8XT3oC9qRN4x94bol/6F/iH/qX+Ie+1JjiE//Qv8Q/9C/xD/1L/AMAAAAAAAAAAAAAAAAAAAAAAAAAAEBPXbp4MV3qi09uTaT5yRvzc9OVG2cnS9Xp4szcRHGiMnu9OFWpTJVLxYnKzGbvV65Uro+MxtzN4VqpWhuuzi9cnqnMXatdvjozPlW6XPKccQAAAAAAAAAAAAAAAAAAAGhVnV+YHi+XS7M9SBTK5VIuIjrZOaJHhT5ziT+3/T5pu93Od3aedyaRxMqa/J44qxK9Tux2zwQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK/4OAAD//2HdMqs=")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
bind$inet6(r4, &(0x7f0000000000)={0xa, 0xe22, 0x0, @empty}, 0x1c)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0) (async)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0xfffffffd, @local, 0x6}, 0x1c)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'})
sendmmsg$inet6(r0, &(0x7f0000000040)=[{{0x0, 0x0, &(0x7f0000000200)=[{&(0x7f0000000380)="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", 0x10d}, {&(0x7f0000000140)="8a3808077eceed896ec9298d8dc3fd129198eb17850b03e0454ea50fa0828a47a0d6e73e45c4322b347ccf376ce1ce794b81316c2fe96510279c1626cb2f1bde19f6987861e478d5a5", 0xa9}], 0x2}}], 0x1, 0x20000000)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
single: successfully extracted reproducer
found reproducer with 25 syscalls
minimizing guilty program
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-socket$inet6_udp-connect$pppl2tp-bind$inet6-syz_emit_ethernet-syz_emit_ethernet-connect$inet6-ioctl$ifreq_SIOCGIFINDEX_vcan-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
bind$inet6(r4, &(0x7f0000000000)={0xa, 0xe22, 0x0, @empty}, 0x1c)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0) (async)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0xfffffffd, @local, 0x6}, 0x1c)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-socket$inet6_udp-connect$pppl2tp-bind$inet6-syz_emit_ethernet-syz_emit_ethernet-connect$inet6-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
bind$inet6(r4, &(0x7f0000000000)={0xa, 0xe22, 0x0, @empty}, 0x1c)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0) (async)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0xfffffffd, @local, 0x6}, 0x1c)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-socket$inet6_udp-connect$pppl2tp-bind$inet6-syz_emit_ethernet-syz_emit_ethernet-connect$inet6
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
bind$inet6(r4, &(0x7f0000000000)={0xa, 0xe22, 0x0, @empty}, 0x1c)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0) (async)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0xfffffffd, @local, 0x6}, 0x1c)

program did not crash
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-socket$inet6_udp-connect$pppl2tp-bind$inet6-syz_emit_ethernet-syz_emit_ethernet-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
bind$inet6(r4, &(0x7f0000000000)={0xa, 0xe22, 0x0, @empty}, 0x1c)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0) (async)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-socket$inet6_udp-connect$pppl2tp-bind$inet6-syz_emit_ethernet-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
bind$inet6(r4, &(0x7f0000000000)={0xa, 0xe22, 0x0, @empty}, 0x1c)
syz_emit_ethernet(0xd6, &(0x7f0000000240)={@link_local, @dev={'\xaa\xaa\xaa\xaa\xaa', 0x34}, @val={@void}, {@ipv6={0x86dd, @udp={0x0, 0x6, "910100", 0x9c, 0x11, 0xff, @remote, @local, {[], {0x0, 0xe22, 0x9c, 0x0, @wg=@initiation={0x1, 0x3, "21bed94dba2ace839212dfe1cb3406fbcca6ecc0e7215e61acbd39fad1fc92bf", "9b91873ab093b1a4f5306d577fa197998c846136c8884c480b2baa4a341708daa6606e93e70edf6cbcd87c3aabcd1580", "852497edacb31cffc8cf69062b4d8bd691f02eed213de0a2a78f4529", {"5207b576c980b65768366e7803ca1cce", "6888b1eca40c1538af91184042ff9a1c"}}}}}}}}, 0x0) (async)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-socket$inet6_udp-connect$pppl2tp-bind$inet6-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
bind$inet6(r4, &(0x7f0000000000)={0xa, 0xe22, 0x0, @empty}, 0x1c)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-socket$inet6_udp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
socket$inet6_udp(0xa, 0x2, 0x0)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program did not crash
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0) (async)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, 0xffffffffffffffff, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program did not crash
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-ioctl$BTRFS_IOC_GET_DEV_STATS-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$eJzs3c9rG8ceAPDvylKcX+/FgRBeHo9HIIempJFjuz9S6CE9ljY00PacGlsxwXIULDnEbqDJobn0UkKhlAZK7+29hx5CLz32rwi0gVCCaaG9qKy88o9ItmVZrp3o84G1Z3ZXmp2d/Q6zGokNoG+dTP/kIk5ExGdJxJFV2/KRbTy5tN/ik1sT6ZJEvf7eb0kk2brm/kn2/1CW+U9E/PhJxJlca7nV+YXp8XK5NJvlh2sz14er8wtnr86MT5WmStdGx8bOvzI2+vprr/asri9e+uPLdx+8df7TU4tffPfo6L0kLsThbNvqemzJ4Jrc7dWZk/V6dk4KceGpl410Vdjelez2AdCVgSzOCxFxonCk0Ix64Pn3cUTUgT6VbDH+B/UX8JxojgOa9/Zd3wc/ox6/uXQD1Fr//NJnI7G/cW90cDFZc2eU3u8O9aD8tIzvf71/L11iO59DAGzR7TsRcS6fb+3/kqz/6965DvZ5ugz9H/xzHqTjn5daxz+DkVse/0Sb8c+hNrHbjc3jP/eoB8WsKx3/vdF2/Ls8aTU0kOX+1RjzFZIrV8ultG/7d0ScjsJgmt9oPuf84sP6ettWj//SJS2/ORbMjuNRfu0cU0yO18a3U+fVHt+J+G/b8W+y3P5Jm/ZPz8cHHZZxvHT//+tt27z+O6v+TcQLbdt/ZUYr2Xh+crhxPQw3r4pWv989/vN65bev/08/7EBV20rb/+DG9R9KVs/XVrdextf7/yqtt63b639f8n4jvS9bd3O8VpsdidiXvNO6fnTltc18c/+0/qdPtY//ja7/AxHxYYf1v3vs2/91X/+dldZ/ckvtv/XEw7c/+mq98jtr/5cbqdPZmk76v04PcDvnDgAAAAAAAPaaXEQcjiRXjP1ZOpcrFpe+33EsDubKlWrtzJXK3LXJaPxWdigKueZM95FV34cYyb4P28yPPpUfi4ijEfH5wIFGvjhRKU/uduUBAAAAAAAAAAAAAAAAAABgjzi0/Pv/WPP7/9QvA7t9dMCOyy89/xvoQ5s+8r8XT3oC9qRN4x94bol/6F/iH/qX+Ie+1JjiE//Qv8Q/9C/xD/1L/AMAAAAAAAAAAAAAAAAAAAAAAAAAAEBPXbp4MV3qi09uTaT5yRvzc9OVG2cnS9Xp4szcRHGiMnu9OFWpTJVLxYnKzGbvV65Uro+MxtzN4VqpWhuuzi9cnqnMXatdvjozPlW6XPKccQAAAAAAAAAAAAAAAAAAAGhVnV+YHi+XS7M9SBTK5VIuIjrZOaJHhT5ziT+3/T5pu93Od3aedyaRxMqa/J44qxK9Tux2zwQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK/4OAAD//2HdMqs=")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
ioctl$BTRFS_IOC_GET_DEV_STATS(0xffffffffffffffff, 0xc4089434, 0x0)
r3 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(0xffffffffffffffff, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(0xffffffffffffffff, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program did not crash
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-sendfile-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-sendfile-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x7a680000) (async)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-ioctl$EXT4_IOC_MOVE_EXT-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
ioctl$EXT4_IOC_MOVE_EXT(r2, 0x40305829, &(0x7f0000000080)={0x17c04, 0xffffffffffffffff, 0x6c7e, 0x2, 0x8, 0x3})
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-ioctl$FS_IOC_SETFLAGS-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-ioctl$FS_IOC_SETFLAGS-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f00000000c0)=0x10) (async)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r3, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-openat-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r2, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-pwrite64-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xc00)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r2, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-openat-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r1, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-openat-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x105142, 0x1d8) (async)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r1, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-syz_mount_image$ext4-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000080)='./file1\x00', 0x210090, &(0x7f0000000340)={[{@user_xattr}, {@delalloc}, {@nojournal_checksum}, {@nobh}, {}, {@max_dir_size_kb={'max_dir_size_kb', 0x3d, 0x7b1}}, {@i_version}, {@data_err_ignore}, {@max_batch_time={'max_batch_time', 0x3d, 0x3}}, {@user_xattr}, {@grpid}]}, 0x3, 0x58d, &(0x7f0000000dc0)="$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")
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r1, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-fsopen-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
fsopen(0x0, 0x0)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r1, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-connect$inet6-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x2, 0x0)
connect$inet6(r0, &(0x7f00000001c0)={0xa, 0x4e23, 0x0, @ipv4={'\x00', '\xff\xff', @dev}}, 0x1c)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r1, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$inet6-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
socket$inet6(0xa, 0x2, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r0, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r0, 0x8933, &(0x7f0000000100)={'vxcan0\x00'}) (async)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.865047481s, {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$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r0, 0x8933, &(0x7f0000000100)={'vxcan0\x00'})

program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue
testing program (duration=33.865047481s, {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$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, 0x0, 0x0)
ioctl$ifreq_SIOCGIFINDEX_vcan(r0, 0x8933, &(0x7f0000000100)={'vxcan0\x00'})

program did not crash
testing program (duration=33.865047481s, {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$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r0, 0x8933, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
extracting C reproducer
testing compiled C program (duration=33.865047481s, {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$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
program crashed: KASAN: use-after-free Write in pppol2tp_release
simplifying C reproducer
testing compiled C program (duration=33.865047481s, {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$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=33.865047481s, {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$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=33.865047481s, {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$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing compiled C program (duration=33.865047481s, {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$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing compiled C program (duration=33.865047481s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing compiled C program (duration=33.865047481s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
program did not crash
testing program (duration=33.865047481s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r0, 0x8933, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
validation run: crashed=true
testing program (duration=33.865047481s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r0, 0x8933, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
validation run: crashed=true
testing program (duration=33.865047481s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$ifreq_SIOCGIFINDEX_vcan
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000740)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x4e23, @broadcast}, 0x2, 0x0, 0x4}}, 0x2e)
ioctl$ifreq_SIOCGIFINDEX_vcan(r0, 0x8933, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
validation run: crashed=true
reproducing took 23m23.458478186s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
Write of size 8 at addr ffff888121758d50 by task syz.2.17/375

CPU: 1 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 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:102 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
 mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
 pppol2tp_release+0x178/0x2b0 net/l2tp/l2tp_ppp.c:441
 __sock_release net/socket.c:652 [inline]
 sock_close+0xc9/0x220 net/socket.c:1389
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fee0f79ce59
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:00007ffda5f7e678 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffda5f7e760 RCX: 00007fee0f79ce59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00000000000071e8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33220000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fee0fa15fac R14: 00007fee0fa15fa8 R15: 00007fee0fa15fa0
 </TASK>

Allocated by task 375:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc+0xb4/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 l2tp_session_create+0x38/0xbd0 net/l2tp/l2tp_core.c:1609
 pppol2tp_connect+0xbf5/0x1640 net/l2tp/l2tp_ppp.c:771
 __sys_connect_file net/socket.c:2000 [inline]
 __sys_connect+0x3da/0x460 net/socket.c:2017
 __do_sys_connect net/socket.c:2027 [inline]
 __se_sys_connect net/socket.c:2024 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2024
 x64_sys_call+0x88d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:43
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 375:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline]
 l2tp_session_put+0xaf/0x1a0 net/l2tp/l2tp_core.c:193
 l2tp_session_delete+0x3df/0x4d0 net/l2tp/l2tp_core.c:1582
 pppol2tp_release+0x169/0x2b0 net/l2tp/l2tp_ppp.c:438
 __sock_release net/socket.c:652 [inline]
 sock_close+0xc9/0x220 net/socket.c:1389
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff888121758c00
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 336 bytes inside of
 512-byte region [ffff888121758c00, ffff888121758e00)

The buggy address belongs to the physical page:
page:ffffea000485d600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x121758
head:ffffea000485d600 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00
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 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 322, tgid 322 (kworker/1:2), ts 29181180386, free_ts 28397105567
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
 get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4586
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5930
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3e0 mm/slub.c:2020
 ___slab_alloc+0x70f/0xb70 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc_node_track_caller+0xa1/0x1e0 mm/slab_common.c:958
 kmalloc_reserve net/core/skbuff.c:449 [inline]
 __alloc_skb+0x226/0x4a0 net/core/skbuff.c:518
 alloc_skb include/linux/skbuff.h:1322 [inline]
 nlmsg_new include/net/netlink.h:987 [inline]
 inet6_ifa_notify net/ipv6/addrconf.c:5569 [inline]
 __ipv6_ifa_notify+0x200/0xe80 net/ipv6/addrconf.c:6227
 ipv6_ifa_notify net/ipv6/addrconf.c:6279 [inline]
 addrconf_dad_completed+0x192/0xe80 net/ipv6/addrconf.c:4283
 addrconf_dad_work+0xc1b/0x14a0 net/ipv6/addrconf.c:-1
 process_one_work+0x717/0xc30 kernel/workqueue.c:2302
 worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1580 [inline]
 free_pcp_prepare mm/page_alloc.c:1654 [inline]
 free_unref_page_prepare+0x80c/0x820 mm/page_alloc.c:3621
 free_unref_page+0x93/0x530 mm/page_alloc.c:3719
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6020
 __vunmap+0xa3c/0xc00 mm/vmalloc.c:2739
 __vfree mm/vmalloc.c:2788 [inline]
 vfree+0x61/0x90 mm/vmalloc.c:2819
 kcov_put kernel/kcov.c:437 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:533
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xaf2/0x2850 kernel/exit.c:887
 do_group_exit+0x21b/0x2e0 kernel/exit.c:1030
 get_signal+0x1382/0x14f0 kernel/signal.c:2891
 arch_do_signal_or_restart+0xd1/0x11c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303

Memory state around the buggy address:
 ffff888121758c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888121758c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888121758d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff888121758d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888121758e00: 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:102 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
Write of size 8 at addr ffff888121758d50 by task syz.2.17/375

CPU: 1 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 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:102 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
 mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
 pppol2tp_release+0x178/0x2b0 net/l2tp/l2tp_ppp.c:441
 __sock_release net/socket.c:652 [inline]
 sock_close+0xc9/0x220 net/socket.c:1389
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fee0f79ce59
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:00007ffda5f7e678 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffda5f7e760 RCX: 00007fee0f79ce59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00000000000071e8 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33220000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fee0fa15fac R14: 00007fee0fa15fa8 R15: 00007fee0fa15fa0
 </TASK>

Allocated by task 375:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc+0xb4/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 l2tp_session_create+0x38/0xbd0 net/l2tp/l2tp_core.c:1609
 pppol2tp_connect+0xbf5/0x1640 net/l2tp/l2tp_ppp.c:771
 __sys_connect_file net/socket.c:2000 [inline]
 __sys_connect+0x3da/0x460 net/socket.c:2017
 __do_sys_connect net/socket.c:2027 [inline]
 __se_sys_connect net/socket.c:2024 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2024
 x64_sys_call+0x88d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:43
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 375:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline]
 l2tp_session_put+0xaf/0x1a0 net/l2tp/l2tp_core.c:193
 l2tp_session_delete+0x3df/0x4d0 net/l2tp/l2tp_core.c:1582
 pppol2tp_release+0x169/0x2b0 net/l2tp/l2tp_ppp.c:438
 __sock_release net/socket.c:652 [inline]
 sock_close+0xc9/0x220 net/socket.c:1389
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff888121758c00
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 336 bytes inside of
 512-byte region [ffff888121758c00, ffff888121758e00)

The buggy address belongs to the physical page:
page:ffffea000485d600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x121758
head:ffffea000485d600 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00
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 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 322, tgid 322 (kworker/1:2), ts 29181180386, free_ts 28397105567
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
 get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4586
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5930
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3e0 mm/slub.c:2020
 ___slab_alloc+0x70f/0xb70 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc_node_track_caller+0xa1/0x1e0 mm/slab_common.c:958
 kmalloc_reserve net/core/skbuff.c:449 [inline]
 __alloc_skb+0x226/0x4a0 net/core/skbuff.c:518
 alloc_skb include/linux/skbuff.h:1322 [inline]
 nlmsg_new include/net/netlink.h:987 [inline]
 inet6_ifa_notify net/ipv6/addrconf.c:5569 [inline]
 __ipv6_ifa_notify+0x200/0xe80 net/ipv6/addrconf.c:6227
 ipv6_ifa_notify net/ipv6/addrconf.c:6279 [inline]
 addrconf_dad_completed+0x192/0xe80 net/ipv6/addrconf.c:4283
 addrconf_dad_work+0xc1b/0x14a0 net/ipv6/addrconf.c:-1
 process_one_work+0x717/0xc30 kernel/workqueue.c:2302
 worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1580 [inline]
 free_pcp_prepare mm/page_alloc.c:1654 [inline]
 free_unref_page_prepare+0x80c/0x820 mm/page_alloc.c:3621
 free_unref_page+0x93/0x530 mm/page_alloc.c:3719
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6020
 __vunmap+0xa3c/0xc00 mm/vmalloc.c:2739
 __vfree mm/vmalloc.c:2788 [inline]
 vfree+0x61/0x90 mm/vmalloc.c:2819
 kcov_put kernel/kcov.c:437 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:533
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xaf2/0x2850 kernel/exit.c:887
 do_group_exit+0x21b/0x2e0 kernel/exit.c:1030
 get_signal+0x1382/0x14f0 kernel/signal.c:2891
 arch_do_signal_or_restart+0xd1/0x11c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303

Memory state around the buggy address:
 ffff888121758c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888121758c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888121758d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff888121758d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888121758e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================