WARNING in register_net_sysctl
------------[ cut here ]------------
sysctl net/ipv4/ipfrag_low_thresh: data points to kernel global data: ipfrag_low_thresh_unused
WARNING: CPU: 0 PID: 5006 at net/sysctl_net.c:155 ensure_safe_net_sysctl net/sysctl_net.c:155 [inline]
WARNING: CPU: 0 PID: 5006 at net/sysctl_net.c:155 register_net_sysctl+0x207/0x3c0 net/sysctl_net.c:167
Modules linked in:
CPU: 0 PID: 5006 Comm: syz-executor.0 Not tainted 6.4.0-rc1-syzkaller-00234-g8b33485128ad #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:ensure_safe_net_sysctl net/sysctl_net.c:155 [inline]
RIP: 0010:register_net_sysctl+0x207/0x3c0 net/sysctl_net.c:167
Code: 8b 43 f4 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 a9 01 00 00 48 8b 53 ec 4c 89 e9 4c 89 fe 48 c7 c7 c0 01 85 8b e8 59 61 81 f7 <0f> 0b 48 89 d8 48 c1 e8 03 0f b6 14 28 48 89 d8 83 e0 07 83 c0 01
RSP: 0018:ffffc90004937bf8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88802c247054 RCX: 0000000000000000
RDX: ffff88807d199dc0 RSI: ffffffff814c03e7 RDI: 0000000000000001
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802c247048
R13: ffffffff8b850040 R14: 0000000000000000 R15: ffffffff8b694ce0
FS: 00000000028b3400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000014a4320 CR3: 000000006f527000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ip4_frags_ns_ctl_register net/ipv4/ip_fragment.c:618 [inline]
ipv4_frags_init_net net/ipv4/ip_fragment.c:689 [inline]
ipv4_frags_init_net+0x269/0x430 net/ipv4/ip_fragment.c:660
ops_init+0xb9/0x6b0 net/core/net_namespace.c:136
setup_net+0x5d1/0xc50 net/core/net_namespace.c:339
copy_net_ns+0x4ee/0x8e0 net/core/net_namespace.c:491
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:228
ksys_unshare+0x449/0x920 kernel/fork.c:3444
__do_sys_unshare kernel/fork.c:3515 [inline]
__se_sys_unshare kernel/fork.c:3513 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:3513
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x467ba7
Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcc9226cd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007ffcc92272f8 RCX: 0000000000467ba7
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000040000000
RBP: 00007ffcc9226d90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000ffffffff
R13: 000000000056cb88 R14: 0000000000000000 R15: 00000000000000f8
Warning: Permanently added '10.128.1.78' (ECDSA) to the list of known hosts.
2023/05/16 13:12:14 ignoring optional flag "raw_cover"="false"
2023/05/16 13:12:14 ignoring optional flag "sandbox_arg"="0"
2023/05/16 13:12:14 fuzzer started
2023/05/16 13:12:14 connecting to host at 10.128.0.169:35899
2023/05/16 13:12:14 checking machine...
2023/05/16 13:12:14 checking revisions...
2023/05/16 13:12:14 testing simple program...
syzkaller login: [ 66.970071][ T5007] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 66.978133][ T5007] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 66.986252][ T5007] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 66.993975][ T5007] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 67.001437][ T5007] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[ 67.008947][ T5007] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 67.036236][ T5006] ------------[ cut here ]------------
[ 67.041927][ T5006] sysctl net/ipv4/ipfrag_low_thresh: data points to kernel global data: ipfrag_low_thresh_unused
[ 67.053608][ T5006] WARNING: CPU: 0 PID: 5006 at net/sysctl_net.c:155 register_net_sysctl+0x207/0x3c0
[ 67.063295][ T5006] Modules linked in:
[ 67.067216][ T5006] CPU: 0 PID: 5006 Comm: syz-executor.0 Not tainted 6.4.0-rc1-syzkaller-00234-g8b33485128ad #0
[ 67.078066][ T5006] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
[ 67.088296][ T5006] RIP: 0010:register_net_sysctl+0x207/0x3c0
[ 67.094301][ T5006] Code: 8b 43 f4 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 a9 01 00 00 48 8b 53 ec 4c 89 e9 4c 89 fe 48 c7 c7 c0 01 85 8b e8 59 61 81 f7 <0f> 0b 48 89 d8 48 c1 e8 03 0f b6 14 28 48 89 d8 83 e0 07 83 c0 01
[ 67.113998][ T5006] RSP: 0018:ffffc90004937bf8 EFLAGS: 00010286
[ 67.120166][ T5006] RAX: 0000000000000000 RBX: ffff88802c247054 RCX: 0000000000000000
[ 67.128218][ T5006] RDX: ffff88807d199dc0 RSI: ffffffff814c03e7 RDI: 0000000000000001
[ 67.136243][ T5006] RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
[ 67.144486][ T5006] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802c247048
[ 67.152532][ T5006] R13: ffffffff8b850040 R14: 0000000000000000 R15: ffffffff8b694ce0
[ 67.160526][ T5006] FS: 00000000028b3400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
[ 67.169576][ T5006] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 67.176287][ T5006] CR2: 00000000014a4320 CR3: 000000006f527000 CR4: 00000000003506f0
[ 67.184331][ T5006] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 67.192454][ T5006] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 67.200450][ T5006] Call Trace:
[ 67.203773][ T5006]
[ 67.206723][ T5006] ? ip4_frag_init+0x380/0x380
[ 67.211588][ T5006] ipv4_frags_init_net+0x269/0x430
[ 67.216777][ T5006] ops_init+0xb9/0x6b0
[ 67.220944][ T5006] setup_net+0x5d1/0xc50
[ 67.225306][ T5006] ? ops_init+0x6b0/0x6b0
[ 67.229685][ T5006] copy_net_ns+0x4ee/0x8e0
[ 67.234178][ T5006] create_new_namespaces+0x3f6/0xb20
[ 67.239653][ T5006] unshare_nsproxy_namespaces+0xc1/0x1f0
[ 67.245459][ T5006] ksys_unshare+0x449/0x920
[ 67.250015][ T5006] ? unshare_fd+0x1c0/0x1c0
[ 67.254672][ T5006] ? unlock_page_memcg+0x2d0/0x2d0
[ 67.259858][ T5006] ? syscall_enter_from_user_mode+0x26/0x80
[ 67.265862][ T5006] __x64_sys_unshare+0x31/0x40
[ 67.270660][ T5006] do_syscall_64+0x39/0xb0
[ 67.275338][ T5006] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 67.281387][ T5006] RIP: 0033:0x467ba7
[ 67.285639][ T5006] Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
[ 67.305594][ T5006] RSP: 002b:00007ffcc9226cd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 67.314265][ T5006] RAX: ffffffffffffffda RBX: 00007ffcc92272f8 RCX: 0000000000467ba7
[ 67.322470][ T5006] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000040000000
[ 67.330580][ T5006] RBP: 00007ffcc9226d90 R08: 0000000000000000 R09: 0000000000000000
[ 67.338659][ T5006] R10: 0000000000000000 R11: 0000000000000206 R12: 00000000ffffffff
[ 67.346725][ T5006] R13: 000000000056cb88 R14: 0000000000000000 R15: 00000000000000f8
[ 67.355022][ T5006]
[ 67.358075][ T5006] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 67.365399][ T5006] CPU: 0 PID: 5006 Comm: syz-executor.0 Not tainted 6.4.0-rc1-syzkaller-00234-g8b33485128ad #0
[ 67.376379][ T5006] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
[ 67.386782][ T5006] Call Trace:
[ 67.390059][ T5006]
[ 67.393070][ T5006] dump_stack_lvl+0xd9/0x150
[ 67.397745][ T5006] panic+0x686/0x730
[ 67.401753][ T5006] ? panic_smp_self_stop+0xa0/0xa0
[ 67.406872][ T5006] ? show_trace_log_lvl+0x285/0x390
[ 67.412093][ T5006] ? register_net_sysctl+0x207/0x3c0
[ 67.417825][ T5006] check_panic_on_warn+0xb1/0xc0
[ 67.422778][ T5006] __warn+0xf2/0x390
[ 67.426843][ T5006] ? preempt_schedule_notrace+0x5f/0xd0
[ 67.432403][ T5006] ? register_net_sysctl+0x207/0x3c0
[ 67.437789][ T5006] report_bug+0x2da/0x500
[ 67.442155][ T5006] handle_bug+0x3c/0x70
[ 67.446347][ T5006] exc_invalid_op+0x18/0x50
[ 67.450908][ T5006] asm_exc_invalid_op+0x1a/0x20
[ 67.455797][ T5006] RIP: 0010:register_net_sysctl+0x207/0x3c0
[ 67.461711][ T5006] Code: 8b 43 f4 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 a9 01 00 00 48 8b 53 ec 4c 89 e9 4c 89 fe 48 c7 c7 c0 01 85 8b e8 59 61 81 f7 <0f> 0b 48 89 d8 48 c1 e8 03 0f b6 14 28 48 89 d8 83 e0 07 83 c0 01
[ 67.481436][ T5006] RSP: 0018:ffffc90004937bf8 EFLAGS: 00010286
[ 67.487515][ T5006] RAX: 0000000000000000 RBX: ffff88802c247054 RCX: 0000000000000000
[ 67.495489][ T5006] RDX: ffff88807d199dc0 RSI: ffffffff814c03e7 RDI: 0000000000000001
[ 67.503472][ T5006] RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
[ 67.511447][ T5006] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802c247048
[ 67.519599][ T5006] R13: ffffffff8b850040 R14: 0000000000000000 R15: ffffffff8b694ce0
[ 67.527592][ T5006] ? __warn_printk+0x187/0x310
[ 67.532557][ T5006] ? register_net_sysctl+0x207/0x3c0
[ 67.537890][ T5006] ? ip4_frag_init+0x380/0x380
[ 67.542912][ T5006] ipv4_frags_init_net+0x269/0x430
[ 67.548128][ T5006] ops_init+0xb9/0x6b0
[ 67.552229][ T5006] setup_net+0x5d1/0xc50
[ 67.556501][ T5006] ? ops_init+0x6b0/0x6b0
[ 67.560858][ T5006] copy_net_ns+0x4ee/0x8e0
[ 67.565286][ T5006] create_new_namespaces+0x3f6/0xb20
[ 67.570594][ T5006] unshare_nsproxy_namespaces+0xc1/0x1f0
[ 67.576421][ T5006] ksys_unshare+0x449/0x920
[ 67.580981][ T5006] ? unshare_fd+0x1c0/0x1c0
[ 67.585587][ T5006] ? unlock_page_memcg+0x2d0/0x2d0
[ 67.590810][ T5006] ? syscall_enter_from_user_mode+0x26/0x80
[ 67.596816][ T5006] __x64_sys_unshare+0x31/0x40
[ 67.601693][ T5006] do_syscall_64+0x39/0xb0
[ 67.606131][ T5006] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 67.612065][ T5006] RIP: 0033:0x467ba7
[ 67.615976][ T5006] Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 10 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
[ 67.636057][ T5006] RSP: 002b:00007ffcc9226cd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
[ 67.645115][ T5006] RAX: ffffffffffffffda RBX: 00007ffcc92272f8 RCX: 0000000000467ba7
[ 67.653469][ T5006] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000040000000
[ 67.661474][ T5006] RBP: 00007ffcc9226d90 R08: 0000000000000000 R09: 0000000000000000
[ 67.669464][ T5006] R10: 0000000000000000 R11: 0000000000000206 R12: 00000000ffffffff
[ 67.677459][ T5006] R13: 000000000056cb88 R14: 0000000000000000 R15: 00000000000000f8
[ 67.685456][ T5006]
[ 67.688668][ T5006] Kernel Offset: disabled
[ 67.693090][ T5006] Rebooting in 86400 seconds..
syzkaller build log:
go env (err=)
GO111MODULE="auto"
GOARCH="amd64"
GOBIN=""
GOCACHE="/syzkaller/.cache/go-build"
GOENV="/syzkaller/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/syzkaller/jobs-2/linux/gopath/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/syzkaller/jobs-2/linux/gopath"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.20.1"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod"
GOWORK=""
CGO_CFLAGS="-O2 -g"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-O2 -g"
CGO_FFLAGS="-O2 -g"
CGO_LDFLAGS="-O2 -g"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build397602044=/tmp/go-build -gno-record-gcc-switches"
git status (err=)
HEAD detached at 8f58a0efb
nothing to commit, working tree clean
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=8f58a0efbf867526a0adee8d9a5cb38e2ebf1ee4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20210830-112408'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=8f58a0efbf867526a0adee8d9a5cb38e2ebf1ee4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20210830-112408'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=8f58a0efbf867526a0adee8d9a5cb38e2ebf1ee4 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20210830-112408'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress
mkdir -p ./bin/linux_amd64
gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -static -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"8f58a0efbf867526a0adee8d9a5cb38e2ebf1ee4\"