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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: 79.765602][ T5343]=20 [ 79.766558][ T5343] The buggy address belongs to the physical page: [ 79.769019][ T5343] page: refcount:0 mapcount:0 mapping:0000000000000000= index:0x0 pfn:0x4f464 [ 79.772366][ T5343] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_= mapped:0 pincount:0 [ 79.775598][ T5343] anon flags: 0x4fff00000000040(head|node=3D1|zone=3D1= |lastcpupid=3D0x7ff) [ 79.778676][ T5343] page_type: f5(slab) [ 79.780232][ T5343] raw: 04fff00000000040 ffff88801ac41c80 0000000000000= 000 dead000000000001 [ 79.783372][ T5343] raw: 0000000000000000 0000000000080008 00000000f5000= 000 0000000000000000 [ 79.786627][ T5343] head: 04fff00000000040 ffff88801ac41c80 000000000000= 0000 dead000000000001 [ 79.789858][ T5343] head: 0000000000000000 0000000000080008 00000000f500= 0000 0000000000000000 [ 79.793129][ T5343] head: 04fff00000000001 ffffea00013d1901 ffffffffffff= ffff 0000000000000000 [ 79.796507][ T5343] head: 0000000000000002 0000000000000000 00000000ffff= ffff 0000000000000000 [ 79.799785][ T5343] page dumped because: kasan: bad access detected [ 79.802261][ T5343] page_owner tracks the page as allocated [ 79.804507][ T5343] page last allocated via order 1, migratetype Unmovab= le, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COM= P|__GFP_NOMEMALLOC), pid 5329, tgid 5329 (syz-executor), ts 78415084094, fr= ee_ts 78169759446 [ 79.812368][ T5343] post_alloc_hook+0x1f4/0x240 [ 79.814298][ T5343] get_page_from_freelist+0x365c/0x37a0 [ 79.816463][ T5343] __alloc_frozen_pages_noprof+0x292/0x710 [ 79.818703][ T5343] alloc_pages_mpol+0x311/0x660 [ 79.820563][ T5343] allocate_slab+0x8f/0x3a0 [ 79.822338][ T5343] ___slab_alloc+0xc27/0x14a0 [ 79.824253][ T5343] __slab_alloc+0x58/0xa0 [ 79.825926][ T5343] __kmalloc_cache_noprof+0x27b/0x390 [ 79.827981][ T5343] binderfs_fill_super+0x58e/0xd90 [ 79.829916][ T5343] get_tree_nodev+0xb7/0x140 [ 79.831720][ T5343] vfs_get_tree+0x90/0x2b0 [ 79.833832][ T5343] do_new_mount+0x2be/0xb40 [ 79.835650][ T5343] __se_sys_mount+0x2d6/0x3c0 [ 79.837488][ T5343] do_syscall_64+0xf3/0x230 [ 79.839249][ T5343] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.841466][ T5343] page last free pid 80 tgid 80 stack trace: [ 79.843812][ T5343] free_unref_folios+0xe40/0x18b0 [ 79.845786][ T5343] shrink_folio_list+0x41a7/0x5ac0 [ 79.847791][ T5343] evict_folios+0x45fd/0x56a0 [ 79.849591][ T5343] try_to_shrink_lruvec+0x713/0x9b0 [ 79.851656][ T5343] shrink_one+0x3b9/0x850 [ 79.853309][ T5343] shrink_node+0x37c5/0x3e50 [ 79.855093][ T5343] kswapd+0x20f3/0x3b10 [ 79.856715][ T5343] kthread+0x7a9/0x920 [ 79.858297][ T5343] ret_from_fork+0x4b/0x80 [ 79.859943][ T5343] ret_from_fork_asm+0x1a/0x30 [ 79.861728][ T5343]=20 [ 79.862691][ T5343] Memory state around the buggy address: [ 79.864899][ T5343] ffff88804f464700: fc fc fc fc fc fc fc fc fc fc fc = fc fc fc fc fc [ 79.868793][ T5343] ffff88804f464780: fc fc fc fc fc fc fc fc fc fc fc = fc fc fc fc fc [ 79.871847][ T5343] >ffff88804f464800: fa fb fb fb fb fb fb fb fb fb fb = fb fb fb fb fb [ 79.875096][ T5343] ^ [ 79.876814][ T5343] ffff88804f464880: fb fb fb fb fb fb fb fb fb fb fb = fb fb fb fb fb [ 79.879777][ T5343] ffff88804f464900: fb fb fb fb fb fb fb fb fb fb fb = fb fb fb fb fb [ 79.882810][ T5343] =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=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 [ 80.174438][ T1033] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 80.177606][ T1033] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 80.241533][ T1068] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 80.255404][ T1068] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 80.841220][ T5343] Kernel panic - not syncing: KASAN: panic_on_warn set= ... [ 80.844058][ T5343] CPU: 0 UID: 0 PID: 5343 Comm: syz-executor Not taint= ed 6.14.0-rc1-syzkaller-g5c8c229261f1-dirty #0 [ 80.848035][ T5343] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), = BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 80.852045][ T5343] Call Trace: [ 80.853331][ T5343] [ 80.854460][ T5343] dump_stack_lvl+0x241/0x360 [ 80.856209][ T5343] ? __pfx_dump_stack_lvl+0x10/0x10 [ 80.858174][ T5343] ? __pfx__printk+0x10/0x10 [ 80.859914][ T5343] ? preempt_schedule+0xe1/0xf0 [ 80.861752][ T5343] ? vscnprintf+0x5d/0x90 [ 80.863363][ T5343] panic+0x349/0x880 [ 80.864858][ T5343] ? check_panic_on_warn+0x21/0xb0 [ 80.866780][ T5343] ? __pfx_panic+0x10/0x10 [ 80.868454][ T5343] ? _raw_spin_unlock_irqrestore+0x130/0x140 [ 80.870716][ T5343] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 80.873049][ T5343] ? print_report+0x502/0x550 [ 80.874886][ T5343] check_panic_on_warn+0x86/0xb0 [ 80.876762][ T5343] ? binder_add_device+0x5f/0xa0 [ 80.878699][ T5343] end_report+0x77/0x160 [ 80.880307][ T5343] kasan_report+0x154/0x180 [ 80.882054][ T5343] ? binder_add_device+0x5f/0xa0 [ 80.883951][ T5343] binder_add_device+0x5f/0xa0 [ 80.885778][ T5343] binderfs_binder_device_create+0x7bf/0x9c0 [ 80.888011][ T5343] binderfs_fill_super+0x944/0xd90 [ 80.889968][ T5343] ? __pfx_binderfs_fill_super+0x10/0x10 [ 80.892086][ T5343] ? shrinker_register+0x160/0x230 [ 80.893912][ T5343] ? sget_fc+0x909/0x9c0 [ 80.895358][ T5343] ? __pfx_set_anon_super_fc+0x10/0x10 [ 80.897187][ T5343] ? __pfx_binderfs_fill_super+0x10/0x10 [ 80.899300][ T5343] get_tree_nodev+0xb7/0x140 [ 80.901061][ T5343] vfs_get_tree+0x90/0x2b0 [ 80.902772][ T5343] do_new_mount+0x2be/0xb40 [ 80.904510][ T5343] ? __pfx_do_new_mount+0x10/0x10 [ 80.906387][ T5343] __se_sys_mount+0x2d6/0x3c0 [ 80.908141][ T5343] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 80.910345][ T5343] ? __pfx___se_sys_mount+0x10/0x10 [ 80.912308][ T5343] ? do_syscall_64+0x100/0x230 [ 80.914126][ T5343] ? __x64_sys_mount+0x20/0xc0 [ 80.915911][ T5343] do_syscall_64+0xf3/0x230 [ 80.917629][ T5343] ? clear_bhb_loop+0x35/0x90 [ 80.919384][ T5343] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.921583][ T5343] RIP: 0033:0x7fc18af7feba [ 80.923238][ T5343] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1= a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0= f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 [ 80.930263][ T5343] RSP: 002b:00007fffe7bd7398 EFLAGS: 00000246 ORIG_RAX= : 00000000000000a5 [ 80.933382][ T5343] RAX: ffffffffffffffda RBX: 00007fc18aff1b21 RCX: 000= 07fc18af7feba [ 80.936291][ T5343] RDX: 00007fc18affcfa8 RSI: 00007fc18aff1b21 RDI: 000= 07fc18affcfa8 [ 80.939200][ T5343] RBP: 0000000000000000 R08: 0000000000000000 R09: 000= 0000000000000 [ 80.942081][ T5343] R10: 0000000000000000 R11: 0000000000000246 R12: 000= 07fc18b005050 [ 80.944983][ T5343] R13: 00007fffe7bd7418 R14: 0000000000000009 R15: 000= 0000000000000 [ 80.947863][ T5343] [ 80.949295][ T5343] Kernel Offset: disabled [ 80.950938][ T5343] Rebooting in 86400 seconds.. VM DIAGNOSIS: 11:53:19 Registers: info registers vcpu 0 CPU#0 RAX=3D000000000000007a RBX=3Dffffffff9a718760 RCX=3D0000000000000000 RDX=3D= 00000000000003f8 RSI=3D0000000000000000 RDI=3D0000000000000020 RBP=3D0000000000000000 RSP=3D= ffffc9000d3171d0 R8 =3Dffffffff856cbbeb R9 =3D1ffff110067ff046 R10=3Ddffffc0000000000 R11=3D= ffffffff856cbba0 R12=3Ddffffc0000000000 R13=3D000000000000007a R14=3D000000000000007a R15=3D= 00000000000003f8 RIP=3Dffffffff856cbc1e RFL=3D00000002 [-------] CPL=3D0 II=3D0 A20=3D1 SMM= =3D0 HLT=3D0 ES =3D0000 0000000000000000 ffffffff 00c00000 CS =3D0010 0000000000000000 ffffffff 00a09b00 DPL=3D0 CS64 [-RA] SS =3D0018 0000000000000000 ffffffff 00c09300 DPL=3D0 DS [-WA] DS =3D0000 0000000000000000 ffffffff 00c00000 FS =3D0000 000055558166b500 ffffffff 00c00000 GS =3D0000 ffff88801fc00000 ffffffff 00c00000 LDT=3D0000 0000000000000000 ffffffff 00c00000 TR =3D0040 fffffe0000003000 00004087 00008b00 DPL=3D0 TSS64-busy GDT=3D fffffe0000001000 0000007f IDT=3D fffffe0000000000 00000fff CR0=3D80050033 CR2=3D00007fc18ae4af90 CR3=3D000000004f316000 CR4=3D00352ef0 DR0=3D0000000000000000 DR1=3D0000000000000000 DR2=3D0000000000000000 DR3=3D= 0000000000000000=20 DR6=3D00000000fffe0ff0 DR7=3D0000000000000400 EFER=3D0000000000000d01 FCW=3D037f FSW=3D0000 [ST=3D0] FTW=3D00 MXCSR=3D00001f80 FPR0=3D0000000000000000 0000 FPR1=3D0000000000000000 0000 FPR2=3D0000000000000000 0000 FPR3=3D0000000000000000 0000 FPR4=3D0000000000000000 0000 FPR5=3D0000000000000000 0000 FPR6=3D0000000000000000 0000 FPR7=3D0000000000000000 0000 Opmask00=3D00000000ffffff80 Opmask01=3D000000000000000f Opmask02=3D00000000= ffffffef Opmask03=3D0000000000000000 Opmask04=3D0000000000000000 Opmask05=3D0000000000000000 Opmask06=3D00000000= 00000000 Opmask07=3D0000000000000000 ZMM00=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM01=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 00007fffe7bd73b0 0000003000000010 ZMM02=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM03=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM04=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM05=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM06=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM07=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM08=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM09=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM10=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM11=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM12=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM13=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM14=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM15=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM16=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM17=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 2525252525252525 2525252525252525 2525252525252525 2525252525252525 ZMM18=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 6573726170206f74 2064656c69616600 277325273d727473 0035333535362030 ZMM19=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 4056574455054a51 054140494c444300 0256000218575156 0010161010130515 ZMM20=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM21=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM22=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM23=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM24=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM25=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM26=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM27=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM28=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM29=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM30=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM31=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 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/linux/gopath/pkg/mod' GONOPROXY=3D'' GONOSUMDB=3D'' GOOS=3D'linux' GOPATH=3D'/syzkaller/jobs/linux/gopath' GOPRIVATE=3D'' GOPROXY=3D'https://proxy.golang.org,direct' GOROOT=3D'/usr/local/go' GOSUMDB=3D'sum.golang.org' GOTMPDIR=3D'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/usr/local/go/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.22.7' GCCGO=3D'gccgo' GOAMD64=3D'v1' AR=3D'ar' CC=3D'gcc' CXX=3D'g++' CGO_ENABLED=3D'1' GOMOD=3D'/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mo= d' 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-build102701335=3D/tmp/go-build -gno-record-gcc= -switches' git status (err=3D) HEAD detached at 4dfba277487 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 go fmt ./sys/... >/dev/null touch .descriptions GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D4dfba277487a7023ab9f5783302da4a9b5e9bef8 -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20241113-111659'" "-tags= =3Dsyz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execpr= og 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 -fpermissive -w -DGOOS_linu= x=3D1 -DGOARCH_amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"4dfba277487a7023ab9f5783302da4a9b5= e9bef8\" /usr/bin/ld: /tmp/ccOQNa87.o: in function `test_cover_filter()': executor.cc:(.text+0x1426b): warning: the use of `tempnam' is dangerous, be= tter use `mkstemp' /usr/bin/ld: /tmp/ccOQNa87.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=3D131f44a4580000 Tested on: commit: 5c8c2292 Merge tag 'kthreads-fixes-2025-02-04' of git:.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3Dd256a021904f1cd= 7 dashboard link: https://syzkaller.appspot.com/bug?extid=3D3201be560ebfa39bc= 6bd compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debia= n) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D109493df9800= 00