WARNING in __debugfs_file_get

------------[ cut here ]------------
WARNING: CPU: 0 PID: 5831 at fs/debugfs/file.c:90 __debugfs_file_get+0x5e3/0x6f0 fs/debugfs/file.c:90
Modules linked in:
CPU: 0 UID: 0 PID: 5831 Comm: syz-executor Not tainted 6.13.0-rc6-next-20250110-syzkaller-07860-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:ffffc900040ff720 EFLAGS: 00010293
RAX: ffffffff83a5b0b2 RBX: 1ffff11029180393 RCX: ffff88802aa75a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900040ff7d0 R08: ffffffff83a5abc7 R09: ffffffff8235b45d
R10: 0000000000000002 R11: ffffffff83a5b7b0 R12: 0000000000000000
R13: ffff888148c01c98 R14: dffffc0000000000 R15: ffffffff8c47e761
FS:  0000555569bd0500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdc471e34c8 CR3: 0000000076de6000 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: 0033:0x7fdc47184611
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:00007fffcc34d570 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007fdc47184611
RDX: 0000000000080001 RSI: 00007fdc471e34c8 RDI: 00000000ffffff9c
RBP: 00007fdc471e34c8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000b
R13: 00007fffcc34d610 R14: 00007fdc47201a6d R15: 0000555569bea010
 </TASK>


Warning: Permanently added '10.128.10.20' (ED25519) to the list of known hosts.
2025/01/11 12:41:24 ignoring optional flag "sandboxArg"="0"
2025/01/11 12:41:25 parsed 1 programs
[   70.126972][ T5831] ------------[ cut here ]------------
[   70.132572][ T5831] WARNING: CPU: 0 PID: 5831 at fs/debugfs/file.c:90 __debugfs_file_get+0x5e3/0x6f0
[   70.142079][ T5831] Modules linked in:
[   70.146022][ T5831] CPU: 0 UID: 0 PID: 5831 Comm: syz-executor Not tainted 6.13.0-rc6-next-20250110-syzkaller-07860-g2b88851f583d #0
[   70.158208][ T5831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   70.168564][ T5831] RIP: 0010:__debugfs_file_get+0x5e3/0x6f0
[   70.174460][ T5831] 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
[   70.194233][ T5831] RSP: 0018:ffffc900040ff720 EFLAGS: 00010293
[   70.200499][ T5831] RAX: ffffffff83a5b0b2 RBX: 1ffff11029180393 RCX: ffff88802aa75a00
[   70.208627][ T5831] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   70.216714][ T5831] RBP: ffffc900040ff7d0 R08: ffffffff83a5abc7 R09: ffffffff8235b45d
[   70.224774][ T5831] R10: 0000000000000002 R11: ffffffff83a5b7b0 R12: 0000000000000000
[   70.232893][ T5831] R13: ffff888148c01c98 R14: dffffc0000000000 R15: ffffffff8c47e761
[   70.240869][ T5831] FS:  0000555569bd0500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
[   70.249963][ T5831] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   70.256643][ T5831] CR2: 00007fdc471e34c8 CR3: 0000000076de6000 CR4: 00000000003526f0
[   70.264688][ T5831] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   70.273042][ T5831] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   70.281051][ T5831] Call Trace:
[   70.284409][ T5831]  <TASK>
[   70.287401][ T5831]  ? __warn+0x165/0x4d0
[   70.291728][ T5831]  ? __debugfs_file_get+0x5e3/0x6f0
[   70.296976][ T5831]  ? report_bug+0x2b3/0x500
[   70.301619][ T5831]  ? __debugfs_file_get+0x5e3/0x6f0
[   70.306844][ T5831]  ? handle_bug+0x60/0x90
[   70.311168][ T5831]  ? exc_invalid_op+0x1a/0x50
[   70.316030][ T5831]  ? asm_exc_invalid_op+0x1a/0x20
[   70.321065][ T5831]  ? __pfx_open_proxy_open+0x10/0x10
[   70.326419][ T5831]  ? do_dentry_open+0x65d/0x1960
[   70.331429][ T5831]  ? __debugfs_file_get+0xf7/0x6f0
[   70.336559][ T5831]  ? __debugfs_file_get+0x5e2/0x6f0
[   70.341936][ T5831]  ? __debugfs_file_get+0x5e3/0x6f0
[   70.347367][ T5831]  ? __pfx___debugfs_file_get+0x10/0x10
[   70.353183][ T5831]  ? __pfx_apparmor_file_open+0x10/0x10
[   70.358840][ T5831]  ? mnt_get_write_access+0x68/0x2b0
[   70.364212][ T5831]  ? mnt_get_write_access+0x68/0x2b0
[   70.369627][ T5831]  open_proxy_open+0x4f/0x4c0
[   70.374394][ T5831]  ? do_dentry_open+0xde0/0x1960
[   70.379440][ T5831]  ? __pfx_open_proxy_open+0x10/0x10
[   70.384816][ T5831]  do_dentry_open+0xdec/0x1960
[   70.389638][ T5831]  ? vfs_open+0x31/0x370
[   70.394015][ T5831]  vfs_open+0x3b/0x370
[   70.398107][ T5831]  path_openat+0x2c74/0x3580
[   70.402881][ T5831]  ? count_memcg_event_mm+0x94/0x420
[   70.408289][ T5831]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   70.414423][ T5831]  ? __pfx_path_openat+0x10/0x10
[   70.419410][ T5831]  do_filp_open+0x27f/0x4e0
[   70.424005][ T5831]  ? __pfx_do_filp_open+0x10/0x10
[   70.429052][ T5831]  ? do_raw_spin_lock+0x14f/0x370
[   70.434184][ T5831]  do_sys_openat2+0x13e/0x1d0
[   70.438878][ T5831]  ? __pfx_do_sys_openat2+0x10/0x10
[   70.444169][ T5831]  ? __pfx_lock_acquire+0x10/0x10
[   70.449214][ T5831]  __x64_sys_openat+0x247/0x2a0
[   70.454150][ T5831]  ? __pfx___x64_sys_openat+0x10/0x10
[   70.459539][ T5831]  ? exc_page_fault+0x590/0x8b0
[   70.464457][ T5831]  ? do_syscall_64+0xb6/0x230
[   70.469148][ T5831]  do_syscall_64+0xf3/0x230
[   70.473721][ T5831]  ? clear_bhb_loop+0x35/0x90
[   70.478598][ T5831]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   70.484553][ T5831] RIP: 0033:0x7fdc47184611
[   70.489096][ T5831] 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
[   70.508857][ T5831] RSP: 002b:00007fffcc34d570 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
[   70.517340][ T5831] RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007fdc47184611
[   70.525569][ T5831] RDX: 0000000000080001 RSI: 00007fdc471e34c8 RDI: 00000000ffffff9c
[   70.533686][ T5831] RBP: 00007fdc471e34c8 R08: 0000000000000000 R09: 0000000000000000
[   70.541762][ T5831] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000b
[   70.549787][ T5831] R13: 00007fffcc34d610 R14: 00007fdc47201a6d R15: 0000555569bea010
[   70.557847][ T5831]  </TASK>
[   70.560915][ T5831] Kernel panic - not syncing: kernel: panic_on_warn set ...
[   70.568208][ T5831] CPU: 0 UID: 0 PID: 5831 Comm: syz-executor Not tainted 6.13.0-rc6-next-20250110-syzkaller-07860-g2b88851f583d #0
[   70.580252][ T5831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[   70.590290][ T5831] Call Trace:
[   70.593563][ T5831]  <TASK>
[   70.596488][ T5831]  dump_stack_lvl+0x241/0x360
[   70.601173][ T5831]  ? __pfx_dump_stack_lvl+0x10/0x10
[   70.606357][ T5831]  ? __pfx__printk+0x10/0x10
[   70.610930][ T5831]  ? _printk+0xd5/0x120
[   70.615070][ T5831]  ? __init_begin+0x41000/0x41000
[   70.620102][ T5831]  ? vscnprintf+0x5d/0x90
[   70.624421][ T5831]  panic+0x349/0x880
[   70.628301][ T5831]  ? __warn+0x174/0x4d0
[   70.632452][ T5831]  ? __pfx_panic+0x10/0x10
[   70.636863][ T5831]  __warn+0x344/0x4d0
[   70.640839][ T5831]  ? __debugfs_file_get+0x5e3/0x6f0
[   70.646201][ T5831]  report_bug+0x2b3/0x500
[   70.650508][ T5831]  ? __debugfs_file_get+0x5e3/0x6f0
[   70.655694][ T5831]  handle_bug+0x60/0x90
[   70.659851][ T5831]  exc_invalid_op+0x1a/0x50
[   70.664336][ T5831]  asm_exc_invalid_op+0x1a/0x20
[   70.669174][ T5831] RIP: 0010:__debugfs_file_get+0x5e3/0x6f0
[   70.674969][ T5831] 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
[   70.694575][ T5831] RSP: 0018:ffffc900040ff720 EFLAGS: 00010293
[   70.700627][ T5831] RAX: ffffffff83a5b0b2 RBX: 1ffff11029180393 RCX: ffff88802aa75a00
[   70.708583][ T5831] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   70.716561][ T5831] RBP: ffffc900040ff7d0 R08: ffffffff83a5abc7 R09: ffffffff8235b45d
[   70.724531][ T5831] R10: 0000000000000002 R11: ffffffff83a5b7b0 R12: 0000000000000000
[   70.732664][ T5831] R13: ffff888148c01c98 R14: dffffc0000000000 R15: ffffffff8c47e761
[   70.740629][ T5831]  ? __pfx_open_proxy_open+0x10/0x10
[   70.745928][ T5831]  ? do_dentry_open+0x65d/0x1960
[   70.750847][ T5831]  ? __debugfs_file_get+0xf7/0x6f0
[   70.755943][ T5831]  ? __debugfs_file_get+0x5e2/0x6f0
[   70.761143][ T5831]  ? __pfx___debugfs_file_get+0x10/0x10
[   70.766950][ T5831]  ? __pfx_apparmor_file_open+0x10/0x10
[   70.772483][ T5831]  ? mnt_get_write_access+0x68/0x2b0
[   70.777761][ T5831]  ? mnt_get_write_access+0x68/0x2b0
[   70.783032][ T5831]  open_proxy_open+0x4f/0x4c0
[   70.787695][ T5831]  ? do_dentry_open+0xde0/0x1960
[   70.792625][ T5831]  ? __pfx_open_proxy_open+0x10/0x10
[   70.797996][ T5831]  do_dentry_open+0xdec/0x1960
[   70.802759][ T5831]  ? vfs_open+0x31/0x370
[   70.807074][ T5831]  vfs_open+0x3b/0x370
[   70.811129][ T5831]  path_openat+0x2c74/0x3580
[   70.815708][ T5831]  ? count_memcg_event_mm+0x94/0x420
[   70.820993][ T5831]  ? lockdep_hardirqs_on_prepare+0x43d/0x780
[   70.826968][ T5831]  ? __pfx_path_openat+0x10/0x10
[   70.831896][ T5831]  do_filp_open+0x27f/0x4e0
[   70.836383][ T5831]  ? __pfx_do_filp_open+0x10/0x10
[   70.841389][ T5831]  ? do_raw_spin_lock+0x14f/0x370
[   70.846409][ T5831]  do_sys_openat2+0x13e/0x1d0
[   70.851166][ T5831]  ? __pfx_do_sys_openat2+0x10/0x10
[   70.856347][ T5831]  ? __pfx_lock_acquire+0x10/0x10
[   70.861379][ T5831]  __x64_sys_openat+0x247/0x2a0
[   70.866291][ T5831]  ? __pfx___x64_sys_openat+0x10/0x10
[   70.871858][ T5831]  ? exc_page_fault+0x590/0x8b0
[   70.876733][ T5831]  ? do_syscall_64+0xb6/0x230
[   70.881494][ T5831]  do_syscall_64+0xf3/0x230
[   70.886224][ T5831]  ? clear_bhb_loop+0x35/0x90
[   70.890890][ T5831]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   70.896771][ T5831] RIP: 0033:0x7fdc47184611
[   70.901187][ T5831] 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
[   70.920787][ T5831] RSP: 002b:00007fffcc34d570 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
[   70.929296][ T5831] RAX: ffffffffffffffda RBX: 0000000000080001 RCX: 00007fdc47184611
[   70.937392][ T5831] RDX: 0000000000080001 RSI: 00007fdc471e34c8 RDI: 00000000ffffff9c
[   70.945375][ T5831] RBP: 00007fdc471e34c8 R08: 0000000000000000 R09: 0000000000000000
[   70.953528][ T5831] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000b
[   70.961771][ T5831] R13: 00007fffcc34d610 R14: 00007fdc47201a6d R15: 0000555569bea010
[   70.969751][ T5831]  </TASK>
[   70.973226][ T5831] Kernel Offset: disabled
[   70.977828][ T5831] 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/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/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/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-build1957390269=/tmp/go-build -gno-record-gcc-switches'

git status (err=<nil>)
HEAD detached at d3ccff6372
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/ccJ4HaeO.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