Extracting prog: 5m48.672025355s Minimizing prog: 11m30.567264969s Simplifying prog options: 4m44.308953684s Extracting C: 1m25.99543606s Simplifying C: 0s extracting reproducer from 36 programs testing a last program of every proc single: executing 11 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): sched_setaffinity-sched_setscheduler-mmap-syz_mount_image$fuse-syz_mount_image$vfat-open-getdents detailed listing: executing program 0: sched_setaffinity(0x0, 0x0, 0x0) sched_setscheduler(0x0, 0x2, 0x0) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) syz_mount_image$fuse(0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) syz_mount_image$vfat(&(0x7f00000000c0), &(0x7f0000000000)='./file1\x00', 0x2010000, &(0x7f0000000480)={[{@uni_xlateno}, {@uni_xlate}, {@iocharset={'iocharset', 0x3d, 'iso8859-6'}}, {@shortname_win95}, {@shortname_lower}, {@fat=@flush}, {@fat=@allow_utime={'allow_utime', 0x3d, 0xffff}}, {@shortname_lower}, {@utf8}, {@shortname_winnt}, {@numtail}, {@utf8no}]}, 0xfe, 0x34c, &(0x7f0000001740)="$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") r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0) getdents(r0, &(0x7f0000001fc0)=""/182, 0xb6) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ext4-rt_sigaction-setsockopt$inet6_IPV6_FLOWLABEL_MGR-syz_mount_image$vfat-prlimit64-sched_setscheduler-getpid-sched_setaffinity-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-socket$inet_tcp-setsockopt$IP6T_SO_SET_REPLACE-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-unshare-openat$selinux_commit_pending_bools-write$binfmt_format-syz_open_procfs-pread64 detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000140)='ext4\x00', &(0x7f00000005c0)='./file0\x00', 0x4000, &(0x7f0000000040)={[{@test_dummy_encryption}, {@i_version}, {@stripe={'stripe', 0x3d, 0x7}}, {@commit={'commit', 0x3d, 0x5}}, {@inlinecrypt}, {@barrier_val={'barrier', 0x3d, 0x5}}, {@max_batch_time}, {@data_err_abort}]}, 0xd, 0x5d8, &(0x7f0000000c00)="$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") rt_sigaction(0x19, &(0x7f0000000400)={&(0x7f0000000000)="f083a259000000002e26c07fff00c4a3a1cea3fbf38af90047d3a41039000000f344aa643e3ef08504dc19b40000c401fe7f7a97c4e2792506c442e13ae4470f69a342cb0000", 0x44000002, 0x0}, 0x0, 0x8, &(0x7f0000000440)) setsockopt$inet6_IPV6_FLOWLABEL_MGR(0xffffffffffffffff, 0x29, 0x20, &(0x7f0000000000)={@initdev={0xfe, 0x88, '\x00', 0x0, 0x0}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x5}, 0x20) syz_mount_image$vfat(&(0x7f00000000c0), &(0x7f0000000000)='./file0\x00', 0x42, &(0x7f0000000600)={[{@utf8no}, {@uni_xlateno}, {@fat=@nfs}, {@fat=@check_strict}, {@iocharset={'iocharset', 0x3d, 'macgaelic'}}, {@numtail}, {@uni_xlate}, {@shortname_win95}, {@numtail}, {@iocharset={'iocharset', 0x3d, 'macgaelic'}}, {@shortname_mixed}, {@shortname_winnt}, {@utf8no}, {@uni_xlate}]}, 0x26, 0x336, &(0x7f00000001c0)="$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") prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000080)=0x8) r0 = getpid() sched_setaffinity(0x0, 0x8, &(0x7f00000002c0)=0x2) sched_setscheduler(r0, 0x2, &(0x7f0000000040)=0x7) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r1, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r2, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r1, &(0x7f00000000c0), 0x10106, 0x2, 0x0) r3 = bpf$MAP_CREATE(0x0, &(0x7f0000000740)=ANY=[@ANYBLOB="1b000000000000"], 0x48) bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x0, 0xc, &(0x7f0000000440)=ANY=[@ANYBLOB="1800000000000000000000000000000018120000", @ANYRES32=r3, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b7040000f6000000850000004300000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x61, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x90) r4 = bpf$PROG_LOAD(0x5, &(0x7f0000000380)={0x11, 0xc, &(0x7f0000000440)=ANY=[], &(0x7f0000000240)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback=0x3, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f0000000080)='sched_switch\x00', r4}, 0x10) socket$inet_tcp(0x2, 0x1, 0x0) setsockopt$IP6T_SO_SET_REPLACE(0xffffffffffffffff, 0x29, 0x40, &(0x7f00000014c0)=@raw={'raw\x00', 0x8, 0x3, 0x3d0, 0x0, 0xffffffff, 0xffffffff, 0xd0, 0xffffffff, 0x458, 0xffffffff, 0xffffffff, 0x458, 0xffffffff, 0x3, 0x0, {[{{@ipv6={@private0, @mcast2, [], [], 'veth0_macvtap\x00', 'dvmrp1\x00'}, 0x0, 0xa8, 0xd0}, @common=@unspec=@NFQUEUE0={0x28}}, {{@ipv6={@empty, @ipv4={'\x00', '\xff\xff', @dev}, [], [], 'wg1\x00', 'gre0\x00', {}, {}, 0x62}, 0x0, 0x200, 0x230, 0x0, {}, [@common=@inet=@hashlimit3={{0x158}, {'wg1\x00', {0x3, 0x0, 0x41, 0x0, 0x0, 0x1000, 0x6, 0x3}}}]}, @common=@unspec=@CONNMARK={0x30}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28, '\x00', 0x7}}}}, 0x430) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000140)={0x9, 0x4, &(0x7f0000000080)=ANY=[@ANYBLOB], &(0x7f0000000100)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0xd, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10, 0x0, @void, @value}, 0x94) unshare(0x0) r5 = openat$selinux_commit_pending_bools(0xffffffffffffff9c, &(0x7f0000000080), 0x1, 0x0) write$binfmt_format(r5, &(0x7f0000000800)='-1\x00', 0x3) r6 = syz_open_procfs(0x0, &(0x7f0000000280)='gid_map\x00') pread64(r6, &(0x7f0000000080)=""/110, 0x98, 0x5) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-signalfd4-io_setup-io_submit detailed listing: executing program 0: r0 = bpf$MAP_CREATE(0x0, &(0x7f00000009c0)=@base={0x9, 0x7, 0x10000, 0x5, 0x0, 0xffffffffffffffff, 0x0, '\x00', 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, @void, @value, @void, @value}, 0x48) r1 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000440)=ANY=[@ANYBLOB="1800000001070000000000000000000018110000", @ANYRES32=r0, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000240)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x90) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000040)={&(0x7f0000000000)='sys_enter\x00', r1}, 0x10) signalfd4(0xffffffffffffffff, &(0x7f00000003c0)={[0x1fffffffff]}, 0x8, 0x0) io_setup(0x1, &(0x7f0000000b80)=0x0) io_submit(r2, 0x0, 0x0) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE_RINGBUF-bpf$MAP_CREATE_RINGBUF-bpf$BPF_RAW_TRACEPOINT_OPEN-syz_mount_image$ext4-chroot-pivot_root-getpid-mount$incfs-chdir-open-getdents detailed listing: executing program 0: bpf$MAP_CREATE_RINGBUF(0x0, &(0x7f0000000440)={0x1b, 0x0, 0x0, 0x40000, 0x0, 0x0, 0x0, '\x00', 0x0, 0xffffffffffffffff, 0x10000, 0x0, 0x0, 0x0, @void, @value, @void, @value}, 0x50) bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x48) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000300)={&(0x7f0000000380)='kmem_cache_free\x00'}, 0x18) syz_mount_image$ext4(&(0x7f0000001140)='ext4\x00', &(0x7f00000007c0)='./file1\x00', 0x410c84, &(0x7f0000000340), 0x1, 0x775, &(0x7f0000001180)="$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") chroot(&(0x7f0000000300)='.\x00') pivot_root(&(0x7f0000001f80)='./file0\x00', &(0x7f00000002c0)='./file0\x00') getpid() mount$incfs(&(0x7f0000000080)='./file0\x00', &(0x7f00000000c0)='./file0\x00', &(0x7f0000000100), 0x0, 0x0) chdir(&(0x7f0000000240)='./file0\x00') r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0) getdents(r0, &(0x7f0000001fc0)=""/182, 0xb6) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x81, 0x40001) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.stat\x00', 0x275a, 0x0) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x0, {0x2a00, 0x80010000, 0x0, 0x4, 0xffffffffffffffff, 0x0, 0x0, 0x2, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d875397bdb22d0000b420a1a93c5240f45f819e01177d3d458dd4992861ac00", "90be8b1c551265406c7f306003d8a0f4bd00", [0x6, 0x7]}}) ioctl$LOOP_CHANGE_FD(r0, 0x4c03, r1) program crashed: KASAN: use-after-free Read in lo_open single: successfully extracted reproducer found reproducer with 4 syscalls minimizing guilty program testing program (duration=57.350339337s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x81, 0x40001) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.stat\x00', 0x275a, 0x0) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x0, {0x2a00, 0x80010000, 0x0, 0x4, 0xffffffffffffffff, 0x0, 0x0, 0x2, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d875397bdb22d0000b420a1a93c5240f45f819e01177d3d458dd4992861ac00", "90be8b1c551265406c7f306003d8a0f4bd00", [0x6, 0x7]}}) program did not crash testing program (duration=57.350339337s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x81, 0x40001) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.stat\x00', 0x275a, 0x0) ioctl$LOOP_CHANGE_FD(r0, 0x4c03, r1) program did not crash testing program (duration=57.350339337s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x81, 0x40001) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={0xffffffffffffffff, 0x0, {0x2a00, 0x80010000, 0x0, 0x4, 0xffffffffffffffff, 0x0, 0x0, 0x2, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d875397bdb22d0000b420a1a93c5240f45f819e01177d3d458dd4992861ac00", "90be8b1c551265406c7f306003d8a0f4bd00", [0x6, 0x7]}}) ioctl$LOOP_CHANGE_FD(r0, 0x4c03, 0xffffffffffffffff) program did not crash testing program (duration=57.350339337s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.stat\x00', 0x275a, 0x0) ioctl$LOOP_CONFIGURE(0xffffffffffffffff, 0x4c0a, &(0x7f00000002c0)={r0, 0x0, {0x2a00, 0x80010000, 0x0, 0x4, 0xffffffffffffffff, 0x0, 0x0, 0x2, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d875397bdb22d0000b420a1a93c5240f45f819e01177d3d458dd4992861ac00", "90be8b1c551265406c7f306003d8a0f4bd00", [0x6, 0x7]}}) ioctl$LOOP_CHANGE_FD(0xffffffffffffffff, 0x4c03, r0) program did not crash testing program (duration=57.350339337s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = syz_open_dev$loop(0x0, 0x81, 0x40001) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.stat\x00', 0x275a, 0x0) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x0, {0x2a00, 0x80010000, 0x0, 0x4, 0xffffffffffffffff, 0x0, 0x0, 0x2, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d875397bdb22d0000b420a1a93c5240f45f819e01177d3d458dd4992861ac00", "90be8b1c551265406c7f306003d8a0f4bd00", [0x6, 0x7]}}) ioctl$LOOP_CHANGE_FD(r0, 0x4c03, r1) program did not crash testing program (duration=57.350339337s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x81, 0x40001) r1 = openat$cgroup_ro(0xffffffffffffff9c, 0x0, 0x275a, 0x0) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x0, {0x2a00, 0x80010000, 0x0, 0x4, 0xffffffffffffffff, 0x0, 0x0, 0x2, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d875397bdb22d0000b420a1a93c5240f45f819e01177d3d458dd4992861ac00", "90be8b1c551265406c7f306003d8a0f4bd00", [0x6, 0x7]}}) ioctl$LOOP_CHANGE_FD(r0, 0x4c03, r1) program did not crash testing program (duration=57.350339337s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x81, 0x40001) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.stat\x00', 0x275a, 0x0) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, 0x0) ioctl$LOOP_CHANGE_FD(r0, 0x4c03, r1) program did not crash extracting C reproducer testing compiled C program (duration=57.350339337s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD program did not crash simplifying guilty program options testing program (duration=57.350339337s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x81, 0x40001) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.stat\x00', 0x275a, 0x0) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x0, {0x2a00, 0x80010000, 0x0, 0x4, 0xffffffffffffffff, 0x0, 0x0, 0x2, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d875397bdb22d0000b420a1a93c5240f45f819e01177d3d458dd4992861ac00", "90be8b1c551265406c7f306003d8a0f4bd00", [0x6, 0x7]}}) ioctl$LOOP_CHANGE_FD(r0, 0x4c03, r1) program did not crash testing program (duration=57.350339337s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x81, 0x40001) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.stat\x00', 0x275a, 0x0) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x0, {0x2a00, 0x80010000, 0x0, 0x4, 0xffffffffffffffff, 0x0, 0x0, 0x2, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d875397bdb22d0000b420a1a93c5240f45f819e01177d3d458dd4992861ac00", "90be8b1c551265406c7f306003d8a0f4bd00", [0x6, 0x7]}}) ioctl$LOOP_CHANGE_FD(r0, 0x4c03, r1) program did not crash testing program (duration=57.350339337s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f0000000440), 0x81, 0x40001) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cgroup.stat\x00', 0x275a, 0x0) ioctl$LOOP_CONFIGURE(r0, 0x4c0a, &(0x7f00000002c0)={r1, 0x0, {0x2a00, 0x80010000, 0x0, 0x4, 0xffffffffffffffff, 0x0, 0x0, 0x2, 0x1c, "fee8a2ab78fc179fd1f8a0e91ddaaca7bd64c6a4b4e00d9683dda1af1ea89de2b7fb0a0100000000000000000300", "2809e8dbe108598948224ad54afac11d875397bdb22d0000b420a1a93c5240f45f819e01177d3d458dd4992861ac00", "90be8b1c551265406c7f306003d8a0f4bd00", [0x6, 0x7]}}) ioctl$LOOP_CHANGE_FD(r0, 0x4c03, r1) program crashed: KASAN: use-after-free Read in lo_open extracting C reproducer testing compiled C program (duration=57.350339337s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-openat$cgroup_ro-ioctl$LOOP_CONFIGURE-ioctl$LOOP_CHANGE_FD program did not crash reproducing took 23m32.749752248s repro crashed as (corrupted=false): ================================================================== BUG: KASAN: use-after-free in mutex_can_spin_on_owner kernel/locking/mutex.c:617 [inline] BUG: KASAN: use-after-free in mutex_optimistic_spin kernel/locking/mutex.c:661 [inline] BUG: KASAN: use-after-free in __mutex_lock_common kernel/locking/mutex.c:973 [inline] BUG: KASAN: use-after-free in __mutex_lock+0xcd7/0x1060 kernel/locking/mutex.c:1114 Read of size 4 at addr ffff8881ea69af78 by task syz-executor/472 CPU: 0 PID: 472 Comm: syz-executor Not tainted 5.4.289-syzkaller-00011-g39762b7a60e9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x241 lib/dump_stack.c:118 print_address_description+0x8c/0x600 mm/kasan/report.c:384 __kasan_report+0xf3/0x120 mm/kasan/report.c:516 kasan_report+0x30/0x60 mm/kasan/common.c:653 mutex_can_spin_on_owner kernel/locking/mutex.c:617 [inline] mutex_optimistic_spin kernel/locking/mutex.c:661 [inline] __mutex_lock_common kernel/locking/mutex.c:973 [inline] __mutex_lock+0xcd7/0x1060 kernel/locking/mutex.c:1114 mutex_lock_killable+0xd8/0x110 kernel/locking/mutex.c:1348 lo_open+0x18/0xc0 drivers/block/loop.c:1899 __blkdev_get+0x3c8/0x1160 fs/block_dev.c:1581 blkdev_get+0x2de/0x3a0 fs/block_dev.c:1714 do_dentry_open+0x964/0x1130 fs/open.c:806 do_last fs/namei.c:3565 [inline] path_openat+0x29bf/0x34b0 fs/namei.c:3683 do_filp_open+0x20b/0x450 fs/namei.c:3713 do_sys_open+0x39c/0x810 fs/open.c:1123 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f9493f70991 Code: 75 57 89 f0 25 00 00 41 00 3d 00 00 41 00 74 49 80 3d ba 1b 1f 00 00 74 6d 89 da 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 93 00 00 00 48 8b 54 24 28 64 48 2b 14 25 RSP: 002b:00007ffef6371d90 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f9493f70991 RDX: 0000000000000002 RSI: 00007ffef6371ea0 RDI: 00000000ffffff9c RBP: 00007ffef6371ea0 R08: 000000000000000a R09: 00007ffef6371b57 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 R13: 00007f949415b260 R14: 0000000000000003 R15: 00007ffef6371ea0 Allocated by task 446: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] __kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slub.c:2829 [inline] slab_alloc mm/slub.c:2837 [inline] kmem_cache_alloc+0xd9/0x250 mm/slub.c:2842 kmem_cache_alloc_node include/linux/slab.h:427 [inline] alloc_task_struct_node kernel/fork.c:171 [inline] dup_task_struct+0x4f/0x600 kernel/fork.c:882 copy_process+0x56d/0x3230 kernel/fork.c:1889 _do_fork+0x197/0x900 kernel/fork.c:2399 __do_sys_clone3 kernel/fork.c:2688 [inline] __se_sys_clone3 kernel/fork.c:2675 [inline] __x64_sys_clone3+0x2da/0x300 kernel/fork.c:2675 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 Freed by task 10: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] kasan_set_free_info mm/kasan/common.c:345 [inline] __kasan_slab_free+0x1b5/0x270 mm/kasan/common.c:487 slab_free_hook mm/slub.c:1455 [inline] slab_free_freelist_hook mm/slub.c:1494 [inline] slab_free mm/slub.c:3080 [inline] kmem_cache_free+0x10b/0x2c0 mm/slub.c:3096 __rcu_reclaim kernel/rcu/rcu.h:222 [inline] rcu_do_batch+0x492/0xa00 kernel/rcu/tree.c:2167 rcu_core+0x4c8/0xcb0 kernel/rcu/tree.c:2387 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292 The buggy address belongs to the object at ffff8881ea69af40 which belongs to the cache task_struct of size 3904 The buggy address is located 56 bytes inside of 3904-byte region [ffff8881ea69af40, ffff8881ea69be80) The buggy address belongs to the page: page:ffffea0007a9a600 refcount:1 mapcount:0 mapping:ffff8881f5cf1900 index:0x0 compound_mapcount: 0 flags: 0x8000000000010200(slab|head) raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f5cf1900 raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL) set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook mm/page_alloc.c:2165 [inline] prep_new_page+0x18f/0x370 mm/page_alloc.c:2171 get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794 __alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893 alloc_slab_page+0x39/0x3c0 mm/slub.c:343 allocate_slab mm/slub.c:1683 [inline] new_slab+0x97/0x440 mm/slub.c:1749 new_slab_objects mm/slub.c:2505 [inline] ___slab_alloc+0x2fe/0x490 mm/slub.c:2667 __slab_alloc+0x62/0xa0 mm/slub.c:2707 slab_alloc_node mm/slub.c:2792 [inline] slab_alloc mm/slub.c:2837 [inline] kmem_cache_alloc+0x109/0x250 mm/slub.c:2842 kmem_cache_alloc_node include/linux/slab.h:427 [inline] alloc_task_struct_node kernel/fork.c:171 [inline] dup_task_struct+0x4f/0x600 kernel/fork.c:882 copy_process+0x56d/0x3230 kernel/fork.c:1889 _do_fork+0x197/0x900 kernel/fork.c:2399 kernel_thread+0x16a/0x1d0 kernel/fork.c:2489 create_kthread kernel/kthread.c:311 [inline] kthreadd+0x3b1/0x4f0 kernel/kthread.c:654 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1176 [inline] __free_pages_ok+0x847/0x950 mm/page_alloc.c:1438 free_the_page mm/page_alloc.c:4955 [inline] __free_pages+0x91/0x140 mm/page_alloc.c:4961 __free_slab+0x221/0x2e0 mm/slub.c:1774 free_slab mm/slub.c:1789 [inline] discard_slab mm/slub.c:1795 [inline] unfreeze_partials+0x14e/0x180 mm/slub.c:2288 put_cpu_partial+0x44/0x180 mm/slub.c:2324 __slab_free+0x297/0x360 mm/slub.c:2971 qlist_free_all+0x43/0xb0 mm/kasan/quarantine.c:167 quarantine_reduce+0x1d9/0x210 mm/kasan/quarantine.c:260 __kasan_kmalloc+0x41/0x210 mm/kasan/common.c:507 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slub.c:2829 [inline] slab_alloc mm/slub.c:2837 [inline] __kmalloc+0x105/0x2e0 mm/slub.c:3909 __kmalloc_node include/linux/slab.h:422 [inline] kmalloc_node include/linux/slab.h:599 [inline] kvmalloc_node+0x7e/0xf0 mm/util.c:596 kvmalloc include/linux/mm.h:761 [inline] kvzalloc include/linux/mm.h:769 [inline] allocate_hook_entries_size net/netfilter/core.c:61 [inline] __nf_hook_entries_try_shrink+0x330/0x750 net/netfilter/core.c:248 __nf_unregister_net_hook+0x41c/0x5d0 net/netfilter/core.c:411 nf_unregister_net_hook net/netfilter/core.c:422 [inline] nf_unregister_net_hooks+0x91/0xe0 net/netfilter/core.c:494 ip6t_unregister_table+0x5d/0x210 net/ipv6/netfilter/ip6_tables.c:1817 ip6table_raw_net_exit+0x58/0x80 net/ipv6/netfilter/ip6table_raw.c:73 Memory state around the buggy address: ffff8881ea69ae00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881ea69ae80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc >ffff8881ea69af00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff8881ea69af80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881ea69b000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== final repro crashed as (corrupted=false): ================================================================== BUG: KASAN: use-after-free in mutex_can_spin_on_owner kernel/locking/mutex.c:617 [inline] BUG: KASAN: use-after-free in mutex_optimistic_spin kernel/locking/mutex.c:661 [inline] BUG: KASAN: use-after-free in __mutex_lock_common kernel/locking/mutex.c:973 [inline] BUG: KASAN: use-after-free in __mutex_lock+0xcd7/0x1060 kernel/locking/mutex.c:1114 Read of size 4 at addr ffff8881ea69af78 by task syz-executor/472 CPU: 0 PID: 472 Comm: syz-executor Not tainted 5.4.289-syzkaller-00011-g39762b7a60e9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x241 lib/dump_stack.c:118 print_address_description+0x8c/0x600 mm/kasan/report.c:384 __kasan_report+0xf3/0x120 mm/kasan/report.c:516 kasan_report+0x30/0x60 mm/kasan/common.c:653 mutex_can_spin_on_owner kernel/locking/mutex.c:617 [inline] mutex_optimistic_spin kernel/locking/mutex.c:661 [inline] __mutex_lock_common kernel/locking/mutex.c:973 [inline] __mutex_lock+0xcd7/0x1060 kernel/locking/mutex.c:1114 mutex_lock_killable+0xd8/0x110 kernel/locking/mutex.c:1348 lo_open+0x18/0xc0 drivers/block/loop.c:1899 __blkdev_get+0x3c8/0x1160 fs/block_dev.c:1581 blkdev_get+0x2de/0x3a0 fs/block_dev.c:1714 do_dentry_open+0x964/0x1130 fs/open.c:806 do_last fs/namei.c:3565 [inline] path_openat+0x29bf/0x34b0 fs/namei.c:3683 do_filp_open+0x20b/0x450 fs/namei.c:3713 do_sys_open+0x39c/0x810 fs/open.c:1123 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f9493f70991 Code: 75 57 89 f0 25 00 00 41 00 3d 00 00 41 00 74 49 80 3d ba 1b 1f 00 00 74 6d 89 da 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 93 00 00 00 48 8b 54 24 28 64 48 2b 14 25 RSP: 002b:00007ffef6371d90 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f9493f70991 RDX: 0000000000000002 RSI: 00007ffef6371ea0 RDI: 00000000ffffff9c RBP: 00007ffef6371ea0 R08: 000000000000000a R09: 00007ffef6371b57 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 R13: 00007f949415b260 R14: 0000000000000003 R15: 00007ffef6371ea0 Allocated by task 446: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] __kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slub.c:2829 [inline] slab_alloc mm/slub.c:2837 [inline] kmem_cache_alloc+0xd9/0x250 mm/slub.c:2842 kmem_cache_alloc_node include/linux/slab.h:427 [inline] alloc_task_struct_node kernel/fork.c:171 [inline] dup_task_struct+0x4f/0x600 kernel/fork.c:882 copy_process+0x56d/0x3230 kernel/fork.c:1889 _do_fork+0x197/0x900 kernel/fork.c:2399 __do_sys_clone3 kernel/fork.c:2688 [inline] __se_sys_clone3 kernel/fork.c:2675 [inline] __x64_sys_clone3+0x2da/0x300 kernel/fork.c:2675 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 Freed by task 10: save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] kasan_set_free_info mm/kasan/common.c:345 [inline] __kasan_slab_free+0x1b5/0x270 mm/kasan/common.c:487 slab_free_hook mm/slub.c:1455 [inline] slab_free_freelist_hook mm/slub.c:1494 [inline] slab_free mm/slub.c:3080 [inline] kmem_cache_free+0x10b/0x2c0 mm/slub.c:3096 __rcu_reclaim kernel/rcu/rcu.h:222 [inline] rcu_do_batch+0x492/0xa00 kernel/rcu/tree.c:2167 rcu_core+0x4c8/0xcb0 kernel/rcu/tree.c:2387 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292 The buggy address belongs to the object at ffff8881ea69af40 which belongs to the cache task_struct of size 3904 The buggy address is located 56 bytes inside of 3904-byte region [ffff8881ea69af40, ffff8881ea69be80) The buggy address belongs to the page: page:ffffea0007a9a600 refcount:1 mapcount:0 mapping:ffff8881f5cf1900 index:0x0 compound_mapcount: 0 flags: 0x8000000000010200(slab|head) raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f5cf1900 raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL) set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook mm/page_alloc.c:2165 [inline] prep_new_page+0x18f/0x370 mm/page_alloc.c:2171 get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794 __alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893 alloc_slab_page+0x39/0x3c0 mm/slub.c:343 allocate_slab mm/slub.c:1683 [inline] new_slab+0x97/0x440 mm/slub.c:1749 new_slab_objects mm/slub.c:2505 [inline] ___slab_alloc+0x2fe/0x490 mm/slub.c:2667 __slab_alloc+0x62/0xa0 mm/slub.c:2707 slab_alloc_node mm/slub.c:2792 [inline] slab_alloc mm/slub.c:2837 [inline] kmem_cache_alloc+0x109/0x250 mm/slub.c:2842 kmem_cache_alloc_node include/linux/slab.h:427 [inline] alloc_task_struct_node kernel/fork.c:171 [inline] dup_task_struct+0x4f/0x600 kernel/fork.c:882 copy_process+0x56d/0x3230 kernel/fork.c:1889 _do_fork+0x197/0x900 kernel/fork.c:2399 kernel_thread+0x16a/0x1d0 kernel/fork.c:2489 create_kthread kernel/kthread.c:311 [inline] kthreadd+0x3b1/0x4f0 kernel/kthread.c:654 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1176 [inline] __free_pages_ok+0x847/0x950 mm/page_alloc.c:1438 free_the_page mm/page_alloc.c:4955 [inline] __free_pages+0x91/0x140 mm/page_alloc.c:4961 __free_slab+0x221/0x2e0 mm/slub.c:1774 free_slab mm/slub.c:1789 [inline] discard_slab mm/slub.c:1795 [inline] unfreeze_partials+0x14e/0x180 mm/slub.c:2288 put_cpu_partial+0x44/0x180 mm/slub.c:2324 __slab_free+0x297/0x360 mm/slub.c:2971 qlist_free_all+0x43/0xb0 mm/kasan/quarantine.c:167 quarantine_reduce+0x1d9/0x210 mm/kasan/quarantine.c:260 __kasan_kmalloc+0x41/0x210 mm/kasan/common.c:507 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slub.c:2829 [inline] slab_alloc mm/slub.c:2837 [inline] __kmalloc+0x105/0x2e0 mm/slub.c:3909 __kmalloc_node include/linux/slab.h:422 [inline] kmalloc_node include/linux/slab.h:599 [inline] kvmalloc_node+0x7e/0xf0 mm/util.c:596 kvmalloc include/linux/mm.h:761 [inline] kvzalloc include/linux/mm.h:769 [inline] allocate_hook_entries_size net/netfilter/core.c:61 [inline] __nf_hook_entries_try_shrink+0x330/0x750 net/netfilter/core.c:248 __nf_unregister_net_hook+0x41c/0x5d0 net/netfilter/core.c:411 nf_unregister_net_hook net/netfilter/core.c:422 [inline] nf_unregister_net_hooks+0x91/0xe0 net/netfilter/core.c:494 ip6t_unregister_table+0x5d/0x210 net/ipv6/netfilter/ip6_tables.c:1817 ip6table_raw_net_exit+0x58/0x80 net/ipv6/netfilter/ip6table_raw.c:73 Memory state around the buggy address: ffff8881ea69ae00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881ea69ae80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc >ffff8881ea69af00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff8881ea69af80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881ea69b000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================