WARNING in __debugfs_file_get

------------[ cut here ]------------
WARNING: CPU: 0 PID: 5829 at fs/debugfs/file.c:90 __debugfs_file_get+0x5e3/0x6f0 fs/debugfs/file.c:90
Modules linked in:
CPU: 0 UID: 0 PID: 5829 Comm: syz-executor Not tainted 6.13.0-rc6-next-20250110-syzkaller-g2b88851f583d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__debugfs_file_get+0x5e3/0x6f0 fs/debugfs/file.c:90
Code: 3f 01 48 b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 0f 85 e9 00 00 00 44 8b 74 24 40 e9 4f ff ff ff e8 2e 90 19 fe 90 <0f> 0b 90 b8 ea ff ff ff 4c 8b 3c 24 e9 5c ff ff ff 44 89 e9 80 e1
RSP: 0018:ffffc900042bf720 EFLAGS: 00010293
RAX: ffffffff83a5b0b2 RBX: 1ffff11029196393 RCX: ffff88802fea1e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900042bf7d0 R08: ffffffff83a5abc7 R09: ffffffff8235b45d
R10: 0000000000000002 R11: ffffffff83a5b7b0 R12: 0000000000000000
R13: ffff888148cb1c98 R14: dffffc0000000000 R15: ffffffff8c47e761
FS:  000055556a594500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f40605e34c8 CR3: 000000007e6d0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 debugfs_file_get fs/debugfs/file.c:152 [inline]
 open_proxy_open+0x4f/0x4c0 fs/debugfs/file.c:283
 do_dentry_open+0xdec/0x1960 fs/open.c:955
 vfs_open+0x3b/0x370 fs/open.c:1085
 do_open fs/namei.c:3828 [inline]
 path_openat+0x2c74/0x3580 fs/namei.c:3987
 do_filp_open+0x27f/0x4e0 fs/namei.c:4014
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_openat fs/open.c:1458 [inline]
 __se_sys_openat fs/open.c:1453 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1453
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4060584611
Code: 75 57 89 f0 25 00 00 41 00 3d 00 00 41 00 74 49 80 3d 3a 7f 1c 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:00007ffc4732cf20 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007f4060584611
RDX: 0000000000080001 RSI: 00007f40605e34c8 RDI: 00000000ffffff9c
RBP: 00007f40605e34c8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000b
R13: 00007ffc4732cfc0 R14: 00007f4060601a6d R15: 000055556a5ae010
 </TASK>


Warning: Permanently added '10.128.0.229' (ED25519) to the list of known hosts.
2025/01/11 11:49:12 ignoring optional flag "sandboxArg"="0"
2025/01/11 11:49:13 parsed 1 programs
[   64.928586][ T5829] ------------[ cut here ]------------
[   64.934200][ T5829] WARNING: CPU: 0 PID: 5829 at fs/debugfs/file.c:90 __debugfs_file_get+0x5e3/0x6f0
[   64.944149][ T5829] Modules linked in:
[   64.948205][ T5829] CPU: 0 UID: 0 PID: 5829 Comm: syz-executor Not tainted 6.13.0-rc6-next-20250110-syzkaller-g2b88851f583d #0
[   64.960077][ T5829] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   64.970511][ T5829] RIP: 0010:__debugfs_file_get+0x5e3/0x6f0
[   64.976734][ T5829] Code: 3f 01 48 b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 0f 85 e9 00 00 00 44 8b 74 24 40 e9 4f ff ff ff e8 2e 90 19 fe 90 <0f> 0b 90 b8 ea ff ff ff 4c 8b 3c 24 e9 5c ff ff ff 44 89 e9 80 e1
[   64.996521][ T5829] RSP: 0018:ffffc900042bf720 EFLAGS: 00010293
[   65.002762][ T5829] RAX: ffffffff83a5b0b2 RBX: 1ffff11029196393 RCX: ffff88802fea1e00
[   65.010767][ T5829] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   65.018988][ T5829] RBP: ffffc900042bf7d0 R08: ffffffff83a5abc7 R09: ffffffff8235b45d
[   65.027137][ T5829] R10: 0000000000000002 R11: ffffffff83a5b7b0 R12: 0000000000000000
[   65.035164][ T5829] R13: ffff888148cb1c98 R14: dffffc0000000000 R15: ffffffff8c47e761
[   65.043218][ T5829] FS:  000055556a594500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
[   65.052225][ T5829] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   65.058867][ T5829] CR2: 00007f40605e34c8 CR3: 000000007e6d0000 CR4: 00000000003526f0
[   65.067105][ T5829] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   65.075234][ T5829] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   65.083270][ T5829] Call Trace:
[   65.086571][ T5829]  <TASK>
[   65.089537][ T5829]  ? __warn+0x165/0x4d0
[   65.093797][ T5829]  ? __debugfs_file_get+0x5e3/0x6f0
[   65.099039][ T5829]  ? report_bug+0x2b3/0x500
[   65.103744][ T5829]  ? __debugfs_file_get+0x5e3/0x6f0
[   65.109079][ T5829]  ? handle_bug+0x60/0x90
[   65.113588][ T5829]  ? exc_invalid_op+0x1a/0x50
[   65.118383][ T5829]  ? asm_exc_invalid_op+0x1a/0x20
[   65.123561][ T5829]  ? __pfx_open_proxy_open+0x10/0x10
[   65.128893][ T5829]  ? do_dentry_open+0x65d/0x1960
[   65.134124][ T5829]  ? __debugfs_file_get+0xf7/0x6f0
[   65.139262][ T5829]  ? __debugfs_file_get+0x5e2/0x6f0
[   65.144529][ T5829]  ? __debugfs_file_get+0x5e3/0x6f0
[   65.149946][ T5829]  ? __pfx___debugfs_file_get+0x10/0x10
[   65.155693][ T5829]  ? __pfx_apparmor_file_open+0x10/0x10
[   65.161298][ T5829]  ? mnt_get_write_access+0x68/0x2b0
[   65.166771][ T5829]  ? mnt_get_write_access+0x68/0x2b0
[   65.172226][ T5829]  open_proxy_open+0x4f/0x4c0
[   65.177002][ T5829]  ? do_dentry_open+0xde0/0x1960
[   65.182157][ T5829]  ? __pfx_open_proxy_open+0x10/0x10
[   65.187634][ T5829]  do_dentry_open+0xdec/0x1960
[   65.192554][ T5829]  ? vfs_open+0x31/0x370
[   65.196930][ T5829]  vfs_open+0x3b/0x370
[   65.201000][ T5829]  path_openat+0x2c74/0x3580
[   65.205646][ T5829]  ? count_memcg_event_mm+0x94/0x420
[   65.210947][ T5829]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   65.217103][ T5829]  ? __pfx_path_openat+0x10/0x10
[   65.222109][ T5829]  do_filp_open+0x27f/0x4e0
[   65.226638][ T5829]  ? __pfx_do_filp_open+0x10/0x10
[   65.231725][ T5829]  ? do_raw_spin_lock+0x14f/0x370
[   65.236864][ T5829]  do_sys_openat2+0x13e/0x1d0
[   65.241720][ T5829]  ? __pfx_do_sys_openat2+0x10/0x10
[   65.246937][ T5829]  ? __pfx_lock_acquire+0x10/0x10
[   65.252028][ T5829]  __x64_sys_openat+0x247/0x2a0
[   65.256923][ T5829]  ? __pfx___x64_sys_openat+0x10/0x10
[   65.262406][ T5829]  ? exc_page_fault+0x590/0x8b0
[   65.267338][ T5829]  ? do_syscall_64+0xb6/0x230
[   65.272091][ T5829]  do_syscall_64+0xf3/0x230
[   65.276717][ T5829]  ? clear_bhb_loop+0x35/0x90
[   65.281434][ T5829]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   65.287514][ T5829] RIP: 0033:0x7f4060584611
[   65.292121][ T5829] Code: 75 57 89 f0 25 00 00 41 00 3d 00 00 41 00 74 49 80 3d 3a 7f 1c 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
[   65.311901][ T5829] RSP: 002b:00007ffc4732cf20 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
[   65.320353][ T5829] RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007f4060584611
[   65.328735][ T5829] RDX: 0000000000080001 RSI: 00007f40605e34c8 RDI: 00000000ffffff9c
[   65.336873][ T5829] RBP: 00007f40605e34c8 R08: 0000000000000000 R09: 0000000000000000
[   65.345085][ T5829] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000b
[   65.353129][ T5829] R13: 00007ffc4732cfc0 R14: 00007f4060601a6d R15: 000055556a5ae010
[   65.361211][ T5829]  </TASK>
[   65.364330][ T5829] Kernel panic - not syncing: kernel: panic_on_warn set ...
[   65.371668][ T5829] CPU: 0 UID: 0 PID: 5829 Comm: syz-executor Not tainted 6.13.0-rc6-next-20250110-syzkaller-g2b88851f583d #0
[   65.383403][ T5829] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   65.393630][ T5829] Call Trace:
[   65.396901][ T5829]  <TASK>
[   65.399875][ T5829]  dump_stack_lvl+0x241/0x360
[   65.404655][ T5829]  ? __pfx_dump_stack_lvl+0x10/0x10
[   65.409906][ T5829]  ? __pfx__printk+0x10/0x10
[   65.414567][ T5829]  ? _printk+0xd5/0x120
[   65.418907][ T5829]  ? __init_begin+0x41000/0x41000
[   65.424032][ T5829]  ? vscnprintf+0x5d/0x90
[   65.428379][ T5829]  panic+0x349/0x880
[   65.432389][ T5829]  ? __warn+0x174/0x4d0
[   65.436547][ T5829]  ? __pfx_panic+0x10/0x10
[   65.440973][ T5829]  __warn+0x344/0x4d0
[   65.444959][ T5829]  ? __debugfs_file_get+0x5e3/0x6f0
[   65.450172][ T5829]  report_bug+0x2b3/0x500
[   65.454531][ T5829]  ? __debugfs_file_get+0x5e3/0x6f0
[   65.459782][ T5829]  handle_bug+0x60/0x90
[   65.463943][ T5829]  exc_invalid_op+0x1a/0x50
[   65.468531][ T5829]  asm_exc_invalid_op+0x1a/0x20
[   65.473652][ T5829] RIP: 0010:__debugfs_file_get+0x5e3/0x6f0
[   65.479562][ T5829] Code: 3f 01 48 b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 0f 85 e9 00 00 00 44 8b 74 24 40 e9 4f ff ff ff e8 2e 90 19 fe 90 <0f> 0b 90 b8 ea ff ff ff 4c 8b 3c 24 e9 5c ff ff ff 44 89 e9 80 e1
[   65.499374][ T5829] RSP: 0018:ffffc900042bf720 EFLAGS: 00010293
[   65.505441][ T5829] RAX: ffffffff83a5b0b2 RBX: 1ffff11029196393 RCX: ffff88802fea1e00
[   65.513498][ T5829] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   65.521476][ T5829] RBP: ffffc900042bf7d0 R08: ffffffff83a5abc7 R09: ffffffff8235b45d
[   65.529701][ T5829] R10: 0000000000000002 R11: ffffffff83a5b7b0 R12: 0000000000000000
[   65.537664][ T5829] R13: ffff888148cb1c98 R14: dffffc0000000000 R15: ffffffff8c47e761
[   65.545823][ T5829]  ? __pfx_open_proxy_open+0x10/0x10
[   65.551205][ T5829]  ? do_dentry_open+0x65d/0x1960
[   65.556232][ T5829]  ? __debugfs_file_get+0xf7/0x6f0
[   65.561357][ T5829]  ? __debugfs_file_get+0x5e2/0x6f0
[   65.566731][ T5829]  ? __pfx___debugfs_file_get+0x10/0x10
[   65.572536][ T5829]  ? __pfx_apparmor_file_open+0x10/0x10
[   65.578102][ T5829]  ? mnt_get_write_access+0x68/0x2b0
[   65.583499][ T5829]  ? mnt_get_write_access+0x68/0x2b0
[   65.588976][ T5829]  open_proxy_open+0x4f/0x4c0
[   65.593741][ T5829]  ? do_dentry_open+0xde0/0x1960
[   65.598768][ T5829]  ? __pfx_open_proxy_open+0x10/0x10
[   65.604133][ T5829]  do_dentry_open+0xdec/0x1960
[   65.608909][ T5829]  ? vfs_open+0x31/0x370
[   65.613244][ T5829]  vfs_open+0x3b/0x370
[   65.617340][ T5829]  path_openat+0x2c74/0x3580
[   65.621953][ T5829]  ? count_memcg_event_mm+0x94/0x420
[   65.627254][ T5829]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   65.633340][ T5829]  ? __pfx_path_openat+0x10/0x10
[   65.638326][ T5829]  do_filp_open+0x27f/0x4e0
[   65.642852][ T5829]  ? __pfx_do_filp_open+0x10/0x10
[   65.647903][ T5829]  ? do_raw_spin_lock+0x14f/0x370
[   65.653219][ T5829]  do_sys_openat2+0x13e/0x1d0
[   65.657903][ T5829]  ? __pfx_do_sys_openat2+0x10/0x10
[   65.663095][ T5829]  ? __pfx_lock_acquire+0x10/0x10
[   65.668118][ T5829]  __x64_sys_openat+0x247/0x2a0
[   65.672970][ T5829]  ? __pfx___x64_sys_openat+0x10/0x10
[   65.678353][ T5829]  ? exc_page_fault+0x590/0x8b0
[   65.683376][ T5829]  ? do_syscall_64+0xb6/0x230
[   65.688342][ T5829]  do_syscall_64+0xf3/0x230
[   65.692877][ T5829]  ? clear_bhb_loop+0x35/0x90
[   65.697602][ T5829]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   65.703506][ T5829] RIP: 0033:0x7f4060584611
[   65.708039][ T5829] Code: 75 57 89 f0 25 00 00 41 00 3d 00 00 41 00 74 49 80 3d 3a 7f 1c 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
[   65.727848][ T5829] RSP: 002b:00007ffc4732cf20 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
[   65.736382][ T5829] RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007f4060584611
[   65.744650][ T5829] RDX: 0000000000080001 RSI: 00007f40605e34c8 RDI: 00000000ffffff9c
[   65.753328][ T5829] RBP: 00007f40605e34c8 R08: 0000000000000000 R09: 0000000000000000
[   65.761655][ T5829] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000b
[   65.769726][ T5829] R13: 00007ffc4732cfc0 R14: 00007f4060601a6d R15: 000055556a5ae010
[   65.777799][ T5829]  </TASK>
[   65.781169][ T5829] Kernel Offset: disabled
[   65.785633][ T5829] Rebooting in 86400 seconds..


syzkaller build log:
go env (err=<nil>)
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=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.22.7'
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 -ffile-prefix-map=/tmp/go-build2026110331=/tmp/go-build -gno-record-gcc-switches'

git status (err=<nil>)
HEAD detached at d3ccff637
nothing to commit, working tree clean


tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sys/syz-sysgen
make .descriptions
tput: No value for $TERM and no -T specified
tput: No value for $TERM and no -T specified
Makefile:31: run command via tools/syz-env for best compatibility, see:
Makefile:32: https://github.com/google/syzkaller/blob/master/docs/contributing.md#using-syz-env
bin/syz-sysgen
go fmt ./sys/... >/dev/null
touch .descriptions
GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=d3ccff6372e07c6aabd02b5da419aa6492b5f0ad -X 'github.com/google/syzkaller/prog.gitRevisionDate=20241226-091248'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \
	-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \
	-DHOSTGOOS_linux=1 -DGIT_REVISION=\"d3ccff6372e07c6aabd02b5da419aa6492b5f0ad\"
/usr/bin/ld: /tmp/ccU14oay.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking