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charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot tried to test the proposed patch but the build/boot failed: 596589][ T1] l2tp_eth: L2TP ethernet pseudowire support (L2TPv3) [ 27.603669][ T1] l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2= TPv3) [ 27.612030][ T1] NET: Registered PF_PHONET protocol family [ 27.619226][ T1] 8021q: 802.1Q VLAN Support v1.8 [ 27.624904][ T1] sctp: Hash tables configured (bind 32/56) [ 27.633622][ T1] NET: Registered PF_RDS protocol family [ 27.640981][ T1] Registered RDS/infiniband transport [ 27.647953][ T1] Registered RDS/tcp transport [ 27.653173][ T1] tipc: Activated (version 2.0.0) [ 27.659306][ T1] NET: Registered PF_TIPC protocol family [ 27.667111][ T1] tipc: Started in single node mode [ 27.673627][ T1] NET: Registered PF_SMC protocol family [ 27.679893][ T1] 9pnet: Installing 9P2000 support [ 27.686223][ T1] NET: Registered PF_CAIF protocol family [ 27.698111][ T1] NET: Registered PF_IEEE802154 protocol family [ 27.705116][ T1] Key type dns_resolver registered [ 27.710323][ T1] Key type ceph registered [ 27.715773][ T1] libceph: loaded (mon/osd proto 15/24) [ 27.724864][ T1] batman_adv: B.A.T.M.A.N. advanced 2025.2 (compatibil= ity version 15) loaded [ 27.735532][ T1] openvswitch: Open vSwitch switching datapath [ 27.745784][ T1] NET: Registered PF_VSOCK protocol family [ 27.752455][ T1] mpls_gso: MPLS GSO support [ 27.791829][ T1] IPI shorthand broadcast: enabled [ 28.853017][ T4368] kworker/u8:5 (4368) used greatest stack depth: 25544= bytes left [ 29.545777][ T1] sched_clock: Marking stable (29480023419, 60586956)-= >(29548520009, -7909634) [ 29.559295][ T1] registered taskstats version 1 [ 29.587631][ T1] Loading compiled-in X.509 certificates [ 29.629727][ T1] Loaded X.509 cert 'Build time autogenerated kernel k= ey: 9544ed9c381b9ee60e03c33019a0775f61856505' [ 30.041269][ T1] zswap: loaded using pool 842/zsmalloc [ 30.050869][ T1] Demotion targets for Node 0: null [ 30.056261][ T1] Demotion targets for Node 1: null [ 30.061859][ T1] debug_vm_pgtable: [debug_vm_pgtable ]: Valid= ating architecture page table helpers [ 33.228886][ T1] Key type .fscrypt registered [ 33.233756][ T1] Key type fscrypt-provisioning registered [ 33.249155][ T1] kAFS: Red Hat AFS client v0.1 registering. [ 33.284299][ T1] Btrfs loaded, assert=3Don, ref-verify=3Don, zoned=3D= yes, fsverity=3Dyes [ 33.293561][ T1] Key type big_key registered [ 33.298857][ T1] Key type encrypted registered [ 33.304175][ T1] AppArmor: AppArmor sha256 policy hashing enabled [ 33.311287][ T1] ima: No TPM chip found, activating TPM-bypass! [ 33.317886][ T1] Loading compiled-in module X.509 certificates [ 33.356852][ T1] Loaded X.509 cert 'Build time autogenerated kernel k= ey: 9544ed9c381b9ee60e03c33019a0775f61856505' [ 33.367969][ T1] ima: Allocated hash algorithm: sha256 [ 33.373914][ T1] ima: No architecture policies found [ 33.379932][ T1] evm: Initialising EVM extended attributes: [ 33.385960][ T1] evm: security.selinux (disabled) [ 33.391455][ T1] evm: security.SMACK64 (disabled) [ 33.396585][ T1] evm: security.SMACK64EXEC (disabled) [ 33.402069][ T1] evm: security.SMACK64TRANSMUTE (disabled) [ 33.408143][ T1] evm: security.SMACK64MMAP (disabled) [ 33.413994][ T1] evm: security.apparmor [ 33.418456][ T1] evm: security.ima [ 33.422434][ T1] evm: security.capability [ 33.427069][ T1] evm: HMAC attrs: 0x1 [ 33.434168][ T1] PM: Magic number: 13:923:822 [ 33.439967][ T1] video4linux v4l-touch0: hash matches [ 33.446106][ T1] block loop10: hash matches [ 33.451222][ T1] tty ptyt2: hash matches [ 33.455932][ T1] netconsole: network logging started [ 33.462668][ T1] gtp: GTP module loaded (pdp ctx size 128 bytes) [ 33.475283][ T1] rdma_rxe: loaded [ 33.480368][ T1] cfg80211: Loading compiled-in X.509 certificates for= regulatory database [ 33.492268][ T1] Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' [ 33.501017][ T1] Loaded X.509 cert 'wens: 61c038651aabdcf94bd0ac7ff06= c7248db18c600' [ 33.510851][ T9] platform regulatory.0: Direct firmware load for regu= latory.db failed with error -2 [ 33.511215][ T1] clk: Disabling unused clocks [ 33.524683][ T9] platform regulatory.0: Falling back to sysfs fallbac= k for: regulatory.db [ 33.526178][ T1] ALSA device list: [ 33.538940][ T1] #0: Dummy 1 [ 33.542650][ T1] #1: Loopback 1 [ 33.546384][ T1] #2: Virtual MIDI Card 1 [ 33.555198][ T1] md: Waiting for all devices to be available before a= utodetect [ 33.562972][ T1] md: If you don't use raid, use raid=3Dnoautodetect [ 33.569582][ T1] md: Autodetecting RAID arrays. [ 33.574788][ T1] md: autorun ... [ 33.578693][ T1] md: ... autorun DONE. [ 33.739773][ T1] EXT4-fs (sda1): orphan cleanup on readonly fs [ 33.749322][ T1] EXT4-fs (sda1): mounted filesystem 4f91c6db-4997-4bb= 4-91b8-7e83a20c1bf1 ro with ordered data mode. Quota mode: none. [ 33.762960][ T1] VFS: Mounted root (ext4 filesystem) readonly on devi= ce 8:1. [ 33.773900][ T1] devtmpfs: mounted [ 33.875119][ T1] Freeing unused kernel image (initmem) memory: 26276K [ 33.889782][ T1] Write protecting the kernel read-only data: 210944k [ 33.913533][ T1] Freeing unused kernel image (text/rodata gap) memory= : 948K [ 33.925400][ T1] Freeing unused kernel image (rodata/data gap) memory= : 492K [ 34.137917][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages f= ound. [ 34.146494][ T1] x86/mm: Checking user space page tables [ 34.329365][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages f= ound. [ 34.343651][ T1] Failed to set sysctl parameter 'max_rcu_stall_to_pan= ic=3D1': parameter not found [ 34.353892][ T1] Run /sbin/init as init process [ 34.394256][ T1]=20 [ 34.396622][ T1] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 34.402211][ T1] WARNING: bad unlock balance detected! [ 34.407859][ T1] 6.16.0-rc2-next-20250619-syzkaller-03877-g2c923c8457= 68-dirty #0 Not tainted [ 34.416889][ T1] ------------------------------------- [ 34.422537][ T1] swapper/0/1 is trying to release lock (vm_lock) at: [ 34.429320][ T1] [] get_user_pages_remote+0x2f1/0xa= d0 [ 34.436517][ T1] but there are no more locks to release! [ 34.442250][ T1]=20 [ 34.442250][ T1] other info that might help us debug this: [ 34.450415][ T1] 1 lock held by swapper/0/1: [ 34.455282][ T1] #0: ffff88801a471760 (&mm->mmap_lock){++++}-{4:4}, = at: mmap_read_lock_maybe_expand+0xbc/0x3c0 [ 34.466037][ T1]=20 [ 34.466037][ T1] stack backtrace: [ 34.471986][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.1= 6.0-rc2-next-20250619-syzkaller-03877-g2c923c845768-dirty #0 PREEMPT(full)= =20 [ 34.472011][ T1] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 05/07/2025 [ 34.472029][ T1] Call Trace: [ 34.472039][ T1] [ 34.472048][ T1] dump_stack_lvl+0x189/0x250 [ 34.472081][ T1] ? __pfx_dump_stack_lvl+0x10/0x10 [ 34.472108][ T1] ? __pfx__printk+0x10/0x10 [ 34.472127][ T1] ? print_lock_name+0xde/0x100 [ 34.472146][ T1] ? get_user_pages_remote+0x2f1/0xad0 [ 34.472170][ T1] print_unlock_imbalance_bug+0xdc/0xf0 [ 34.472199][ T1] lock_release+0x269/0x3e0 [ 34.472222][ T1] ? get_user_pages_remote+0x2f1/0xad0 [ 34.472247][ T1] __get_user_pages+0x2dc7/0x3020 [ 34.472285][ T1] ? __pfx___get_user_pages+0x10/0x10 [ 34.472312][ T1] get_user_pages_remote+0x2f1/0xad0 [ 34.472339][ T1] ? __pfx_get_user_pages_remote+0x10/0x10 [ 34.472362][ T1] ? down_read+0x1ad/0x2e0 [ 34.472386][ T1] ? mmap_read_lock_maybe_expand+0xc6/0x3c0 [ 34.472405][ T1] get_arg_page+0x104/0x330 [ 34.472429][ T1] ? __pfx_get_arg_page+0x10/0x10 [ 34.472452][ T1] ? __pfx___might_resched+0x10/0x10 [ 34.472478][ T1] ? create_init_stack_vma+0x523/0x680 [ 34.472506][ T1] copy_string_kernel+0x191/0x2a0 [ 34.472531][ T1] kernel_execve+0x5a2/0x9f0 [ 34.472559][ T1] ? __pfx_kernel_init+0x10/0x10 [ 34.472580][ T1] try_to_run_init_process+0x13/0x60 [ 34.472604][ T1] ? __pfx_kernel_init+0x10/0x10 [ 34.472630][ T1] kernel_init+0xad/0x1d0 [ 34.472649][ T1] ? __pfx_kernel_init+0x10/0x10 [ 34.472668][ T1] ret_from_fork+0x3fc/0x770 [ 34.472694][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 34.472720][ T1] ? __switch_to_asm+0x39/0x70 [ 34.472736][ T1] ? __switch_to_asm+0x33/0x70 [ 34.472752][ T1] ? __pfx_kernel_init+0x10/0x10 [ 34.472773][ T1] ret_from_fork_asm+0x1a/0x30 [ 34.472797][ T1] [ 97.551206][ T9] cfg80211: failed to load regulatory.db [ 202.580574][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks= : [ 202.588016][ C0] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): = P1 [ 202.595200][ C0] rcu: (detected by 0, t=3D10502 jiffies, g=3D3113, q= =3D77 ncpus=3D2) [ 202.603497][ C0] task:swapper/0 state:R running task stack= :18840 pid:1 tgid:1 ppid:0 task_flags:0x0140 flags:0x00004002 [ 202.617438][ C0] Call Trace: [ 202.621217][ C0] [ 202.624138][ C0] sched_show_task+0x49d/0x630 [ 202.628927][ C0] ? __pfx_sched_show_task+0x10/0x10 [ 202.634220][ C0] ? rcu_dump_cpu_stacks+0x79/0x4e0 [ 202.639427][ C0] ? wq_watchdog_touch+0xef/0x180 [ 202.644461][ C0] print_other_cpu_stall+0xfa6/0x1370 [ 202.649853][ C0] ? __pfx_print_other_cpu_stall+0x10/0x10 [ 202.655786][ C0] ? rcu_is_watching+0x15/0xb0 [ 202.660753][ C0] ? rcu_is_watching+0x15/0xb0 [ 202.665646][ C0] rcu_sched_clock_irq+0x9d1/0x1090 [ 202.670878][ C0] ? __pfx_rcu_sched_clock_irq+0x10/0x10 [ 202.676623][ C0] update_process_times+0x23c/0x2f0 [ 202.681946][ C0] tick_nohz_handler+0x39a/0x520 [ 202.686907][ C0] ? __pfx_tick_nohz_handler+0x10/0x10 [ 202.692408][ C0] __hrtimer_run_queues+0x4e0/0xc60 [ 202.697758][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 202.703594][ C0] ? read_tsc+0x9/0x20 [ 202.707700][ C0] hrtimer_interrupt+0x45b/0xaa0 [ 202.712854][ C0] __sysvec_apic_timer_interrupt+0x10b/0x410 [ 202.719067][ C0] sysvec_apic_timer_interrupt+0xa1/0xc0 [ 202.724828][ C0] [ 202.727779][ C0] [ 202.730737][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 202.737352][ C0] RIP: 0010:mtree_range_walk+0x6b7/0x840 [ 202.743593][ C0] Code: 9f 52 bf f6 e9 47 fb ff ff e8 a5 2a 5b f6 89 d= 8 e9 09 fb ff ff e8 99 2a 5b f6 48 8b 54 24 08 48 8d 7a 3f 48 89 f8 48 c1 e= 8 03 <0f> b6 04 28 84 c0 0f 85 19 01 00 00 8b 44 24 04 88 42 3f 4c 8d 72 [ 202.764005][ C0] RSP: 0000:ffffc90000067760 EFLAGS: 00000a07 [ 202.770192][ C0] RAX: 1ffff9200000cf21 RBX: 0000000000000001 RCX: fff= f8881404c8000 [ 202.778278][ C0] RDX: ffffc900000678d0 RSI: ffff88801a471500 RDI: fff= fc9000006790f [ 202.787151][ C0] RBP: dffffc0000000000 R08: ffff8881404c8000 R09: 000= 0000000000004 [ 202.795319][ C0] R10: 0000000000000003 R11: 0000000000000000 R12: 000= 07fffffffe000 [ 202.803574][ C0] R13: 00007fffffffefff R14: ffff88801a471500 R15: fff= f88802dc03e00 [ 202.811580][ C0] mas_walk+0xc6/0x2e0 [ 202.815671][ C0] ? lock_vma_under_rcu+0x3c8/0x710 [ 202.821095][ C0] lock_vma_under_rcu+0x1be/0x710 [ 202.826211][ C0] ? lock_vma_under_rcu+0xf8/0x710 [ 202.831323][ C0] ? __pfx_lock_vma_under_rcu+0x10/0x10 [ 202.836979][ C0] __get_user_pages+0x404/0x3020 [ 202.841960][ C0] ? __pfx___get_user_pages+0x10/0x10 [ 202.847542][ C0] ? mmap_read_lock_maybe_expand+0xbc/0x3c0 [ 202.853459][ C0] ? rcu_is_watching+0x15/0xb0 [ 202.858511][ C0] ? is_valid_gup_args+0x11f/0x200 [ 202.863664][ C0] get_user_pages_remote+0x2f1/0xad0 [ 202.868997][ C0] ? __pfx_get_user_pages_remote+0x10/0x10 [ 202.874986][ C0] ? down_read+0x1ad/0x2e0 [ 202.879586][ C0] ? mmap_read_lock_maybe_expand+0xc6/0x3c0 [ 202.885490][ C0] get_arg_page+0x104/0x330 [ 202.890016][ C0] ? __pfx_get_arg_page+0x10/0x10 [ 202.895261][ C0] ? __pfx___might_resched+0x10/0x10 [ 202.900673][ C0] copy_string_kernel+0x191/0x2a0 [ 202.905734][ C0] kernel_execve+0x673/0x9f0 [ 202.910444][ C0] ? __pfx_kernel_init+0x10/0x10 [ 202.915485][ C0] try_to_run_init_process+0x13/0x60 [ 202.921105][ C0] ? __pfx_kernel_init+0x10/0x10 [ 202.926068][ C0] kernel_init+0xad/0x1d0 [ 202.930515][ C0] ? __pfx_kernel_init+0x10/0x10 [ 202.935512][ C0] ret_from_fork+0x3fc/0x770 [ 202.940312][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 202.945721][ C0] ? __switch_to_asm+0x39/0x70 [ 202.950593][ C0] ? __switch_to_asm+0x33/0x70 [ 202.955365][ C0] ? __pfx_kernel_init+0x10/0x10 [ 202.960497][ C0] ret_from_fork_asm+0x1a/0x30 [ 202.965371][ C0] [ 328.590772][ T36] kworker/u8:2 (36) used greatest stack depth: 23608 b= ytes left syzkaller build log: go env (err=3D) GO111MODULE=3D'auto' GOARCH=3D'amd64' GOBIN=3D'' GOCACHE=3D'/syzkaller/.cache/go-build' GOENV=3D'/syzkaller/.config/go/env' GOEXE=3D'' GOEXPERIMENT=3D'' GOFLAGS=3D'' GOHOSTARCH=3D'amd64' GOHOSTOS=3D'linux' GOINSECURE=3D'' GOMODCACHE=3D'/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY=3D'' GONOSUMDB=3D'' GOOS=3D'linux' GOPATH=3D'/syzkaller/jobs-2/linux/gopath' GOPRIVATE=3D'' GOPROXY=3D'https://proxy.golang.org,direct' GOROOT=3D'/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.= 1-go1.23.7.linux-amd64' GOSUMDB=3D'sum.golang.org' GOTMPDIR=3D'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/syzkaller/jobs-2/linux/gopath/pkg/mod/golang.org/toolchain@v0= .0.1-go1.23.7.linux-amd64/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.23.7' GODEBUG=3D'' GOTELEMETRY=3D'local' GOTELEMETRYDIR=3D'/syzkaller/.config/go/telemetry' GCCGO=3D'gccgo' GOAMD64=3D'v1' AR=3D'ar' CC=3D'gcc' CXX=3D'g++' CGO_ENABLED=3D'1' GOMOD=3D'/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.= mod' GOWORK=3D'' CGO_CFLAGS=3D'-O2 -g' CGO_CPPFLAGS=3D'' CGO_CXXFLAGS=3D'-O2 -g' CGO_FFLAGS=3D'-O2 -g' CGO_LDFLAGS=3D'-O2 -g' PKG_CONFIG=3D'pkg-config' GOGCCFLAGS=3D'-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=3D0= -ffile-prefix-map=3D/tmp/go-build2886964739=3D/tmp/go-build -gno-record-gc= c-switches' git status (err=3D) HEAD detached at 0e8da31f2d4 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/contribut= ing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sy= s/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/contribut= ing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=3Dlinux GOARCH=3Damd64 go build -ldflags=3D"-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D0e8da31f2d4312fc3ad5c1e2e221075831885e0e -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20250613-131303" -o ./bi= n/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 -Wfr= ame-larger-than=3D16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-forma= t-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -= static-pie -std=3Dc++17 -I. -Iexecutor/_include -DGOOS_linux=3D1 -DGOARCH= _amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"0e8da31f2d4312fc3ad5c1e2e221075831= 885e0e\" /usr/bin/ld: /tmp/cci5PNSq.o: in function `Connection::Connect(char const*,= char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEP= KcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applicat= ions requires at runtime the shared libraries from the glibc version used f= or linking Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=3D158b9d0c580000 Tested on: commit: 2c923c84 Add linux-next specific files for 20250619 git tree: linux-next kernel config: https://syzkaller.appspot.com/x/.config?x=3D58afc4b78b52b7e= 3 dashboard link: https://syzkaller.appspot.com/bug?extid=3D8e4be574cb8c40140= a2a compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-= 1~exp1~20250514183223.118), Debian LLD 20.1.6 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D149793705800= 00