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ZFjPi+AhtjPZlADDPEk6P3Mem8q2W9RR4Y5Db72Hek8Csd5R X-Google-Smtp-Source: AGHT+IGTroKHuY0zHyu8X3nMiXGnuNGMZmtK2noF4INH/S1nULtywBtdw/og0+CfDsZSKQKdbwVROfu9WlV6VLhh8y0mIMLSXBh3 MIME-Version: 1.0 X-Received: by 2002:a05:6870:b796:b0:1d5:8e96:7d85 with SMTP id ed22-20020a056870b79600b001d58e967d85mr1845337oab.1.1696499969849; Thu, 05 Oct 2023 02:59:29 -0700 (PDT) Date: Thu, 05 Oct 2023 02:59:29 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001081fc0606f52ed9@google.com> Subject: Re: [syzbot] [integrity] [overlayfs] possible deadlock in mnt_want_write (2) From: syzbot To: amir73il@gmail.com, hdanton@sina.com, linux-fsdevel@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-unionfs@vger.kernel.org, miklos@szeredi.hu, mszeredi@redhat.com, syzbot@syzkalhler.appspotmail.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, 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tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hello, syzbot tried to test the proposed patch but the build/boot failed: .11 [ 11.711476][ T1] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 11.717652][ T1] Bluetooth: BNEP filters: protocol multicast [ 11.723764][ T1] Bluetooth: BNEP socket layer initialized [ 11.729798][ T1] Bluetooth: CMTP (CAPI Emulation) ver 1.0 [ 11.735800][ T1] Bluetooth: CMTP socket layer initialized [ 11.741657][ T1] Bluetooth: HIDP (Human Interface Emulation) ver 1.2 [ 11.748518][ T1] Bluetooth: HIDP socket layer initialized [ 11.758808][ T1] NET: Registered PF_RXRPC protocol family [ 11.764714][ T1] Key type rxrpc registered [ 11.769426][ T1] Key type rxrpc_s registered [ 11.774975][ T1] NET: Registered PF_KCM protocol family [ 11.781399][ T1] lec:lane_module_init: lec.c: initialized [ 11.787210][ T1] mpoa:atm_mpoa_init: mpc.c: initialized [ 11.793325][ T1] l2tp_core: L2TP core driver, V2.0 [ 11.798593][ T1] l2tp_ppp: PPPoL2TP kernel driver, V2.0 [ 11.804282][ T1] l2tp_ip: L2TP IP encapsulation support (L2TPv3) [ 11.810911][ T1] l2tp_netlink: L2TP netlink interface [ 11.816532][ T1] l2tp_eth: L2TP ethernet pseudowire support (L2TPv3) [ 11.823862][ T1] l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2= TPv3) [ 11.831528][ T1] NET: Registered PF_PHONET protocol family [ 11.837777][ T1] 8021q: 802.1Q VLAN Support v1.8 [ 11.855888][ T1] DCCP: Activated CCID 2 (TCP-like) [ 11.861493][ T1] DCCP: Activated CCID 3 (TCP-Friendly Rate Control) [ 11.868489][ T1] DCCP is deprecated and scheduled to be removed in 20= 25, please contact the netdev mailing list [ 11.879600][ T1] sctp: Hash tables configured (bind 32/56) [ 11.886970][ T1] NET: Registered PF_RDS protocol family [ 11.893414][ T1] Registered RDS/infiniband transport [ 11.900057][ T1] Registered RDS/tcp transport [ 11.904815][ T1] tipc: Activated (version 2.0.0) [ 11.910959][ T1] NET: Registered PF_TIPC protocol family [ 11.917541][ T1] tipc: Started in single node mode [ 11.923606][ T1] NET: Registered PF_SMC protocol family [ 11.929592][ T1] 9pnet: Installing 9P2000 support [ 11.935356][ T1] NET: Registered PF_CAIF protocol family [ 11.948223][ T1] NET: Registered PF_IEEE802154 protocol family [ 11.954672][ T1] Key type dns_resolver registered [ 11.959869][ T1] Key type ceph registered [ 11.964886][ T1] libceph: loaded (mon/osd proto 15/24) [ 11.971970][ T1] batman_adv: B.A.T.M.A.N. advanced 2023.3 (compatibil= ity version 15) loaded [ 11.981263][ T1] openvswitch: Open vSwitch switching datapath [ 11.991164][ T1] NET: Registered PF_VSOCK protocol family [ 11.997270][ T1] mpls_gso: MPLS GSO support [ 12.019850][ T1] IPI shorthand broadcast: enabled [ 12.025183][ T1] AVX2 version of gcm_enc/dec engaged. [ 12.031096][ T1] AES CTR mode by8 optimization enabled [ 13.986311][ T1] sched_clock: Marking stable (13940030159, 37368238)-= >(13987518566, -10120169) [ 14.000622][ T1] registered taskstats version 1 [ 14.020069][ T1] Loading compiled-in X.509 certificates [ 14.031543][ T1] Loaded X.509 cert 'Build time autogenerated kernel k= ey: 2d553f2396bceba4be328de3fad0b481a51ca3cf' [ 14.045807][ T1] zswap: loaded using pool lzo/zbud [ 14.257081][ T1] debug_vm_pgtable: [debug_vm_pgtable ]: Valid= ating architecture page table helpers [ 16.606589][ T1] Key type .fscrypt registered [ 16.611425][ T1] Key type fscrypt-provisioning registered [ 16.624007][ T1] kAFS: Red Hat AFS client v0.1 registering. [ 16.646715][ T1] Btrfs loaded, assert=3Don, ref-verify=3Don, zoned=3D= yes, fsverity=3Dyes [ 16.656542][ T1] Key type big_key registered [ 16.664108][ T1] Key type encrypted registered [ 16.669211][ T1] ima: No TPM chip found, activating TPM-bypass! [ 16.675572][ T1] Loading compiled-in module X.509 certificates [ 16.684589][ T1] Loaded X.509 cert 'Build time autogenerated kernel k= ey: 2d553f2396bceba4be328de3fad0b481a51ca3cf' [ 16.695647][ T1] ima: Allocated hash algorithm: sha256 [ 16.701654][ T1] ima: No architecture policies found [ 16.707848][ T1] evm: Initialising EVM extended attributes: [ 16.714189][ T1] evm: security.selinux (disabled) [ 16.719369][ T1] evm: security.SMACK64 [ 16.723503][ T1] evm: security.SMACK64EXEC [ 16.728365][ T1] evm: security.SMACK64TRANSMUTE [ 16.733278][ T1] evm: security.SMACK64MMAP [ 16.737801][ T1] evm: security.apparmor (disabled) [ 16.742978][ T1] evm: security.ima [ 16.746763][ T1] evm: security.capability [ 16.751272][ T1] evm: HMAC attrs: 0x1 [ 16.757582][ T1] PM: Magic number: 11:141:828 [ 16.762692][ T1] video4linux v4l-touch6: hash matches [ 16.768621][ T1] tty ptyt8: hash matches [ 16.772947][ T1] tty ptyqb: hash matches [ 16.779976][ T1] printk: console [netcon0] enabled [ 16.785201][ T1] netconsole: network logging started [ 16.791177][ T1] gtp: GTP module loaded (pdp ctx size 104 bytes) [ 16.799026][ T1] rdma_rxe: loaded [ 16.803522][ T1] cfg80211: Loading compiled-in X.509 certificates for= regulatory database [ 16.814312][ T1] Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7' [ 16.821808][ T1] clk: Disabling unused clocks [ 16.822972][ T2520] platform regulatory.0: Direct firmware load for regu= latory.db failed with error -2 [ 16.826718][ T1] ALSA device list: [ 16.836181][ T2520] platform regulatory.0: Falling back to sysfs fallbac= k for: regulatory.db [ 16.849196][ T1] #0: Dummy 1 [ 16.852687][ T1] #1: Loopback 1 [ 16.856406][ T1] #2: Virtual MIDI Card 1 [ 16.864429][ T1] md: Waiting for all devices to be available before a= utodetect [ 16.872287][ T1] md: If you don't use raid, use raid=3Dnoautodetect [ 16.878935][ T1] md: Autodetecting RAID arrays. [ 16.883975][ T1] md: autorun ... [ 16.887676][ T1] md: ... autorun DONE. [ 16.961157][ T1] EXT4-fs (sda1): mounted filesystem 5941fea2-f5fa-4b4= e-b5ef-9af118b27b95 ro with ordered data mode. Quota mode: none. [ 16.973957][ T1] VFS: Mounted root (ext4 filesystem) readonly on devi= ce 8:1. [ 17.007193][ T1] devtmpfs: mounted [ 17.026225][ T1] Freeing unused kernel image (initmem) memory: 2884K [ 17.033318][ T1] Write protecting the kernel read-only data: 196608k [ 17.044849][ T1] Freeing unused kernel image (rodata/data gap) memory= : 1780K [ 17.152701][ T1] x86/mm: Checked W+X mappings: passed, no W+X pages f= ound. [ 17.165765][ T1] Failed to set sysctl parameter 'max_rcu_stall_to_pan= ic=3D1': parameter not found [ 17.175611][ T1] Run /sbin/init as init process [ 17.221897][ T1] ------------[ cut here ]------------ [ 17.227549][ T1] WARNING: CPU: 1 PID: 1 at security/integrity/iint.c:= 85 integrity_inode_get+0x499/0x580 [ 17.237529][ T1] Modules linked in: [ 17.241431][ T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.6.0-rc4-= syzkaller-00001-g79be50b1a644 #0 [ 17.251093][ T1] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 09/06/2023 [ 17.261192][ T1] RIP: 0010:integrity_inode_get+0x499/0x580 [ 17.267086][ T1] Code: eb 11 e8 ba 30 8c fd 48 c7 c7 60 e4 92 8d e8 b= e 1e d6 06 4c 89 e0 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 97 30 8= c fd <0f> 0b 31 db e9 b0 fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c [ 17.287095][ T1] RSP: 0000:ffffc900000678f0 EFLAGS: 00010293 [ 17.293214][ T1] RAX: ffffffff8401db19 RBX: 00000000ffffffff RCX: fff= f888015e58000 [ 17.301239][ T1] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 000= 0000000000001 [ 17.309277][ T1] RBP: ffff88801db8aad8 R08: ffffffff8401d8c4 R09: 000= 0000000000000 [ 17.317271][ T1] R10: ffff88802871d088 R11: ffffed10050e3a13 R12: fff= f88802871d000 [ 17.325268][ T1] R13: ffff88802871d0d0 R14: dffffc0000000000 R15: fff= f88801db8aab0 [ 17.333277][ T1] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000= ) knlGS:0000000000000000 [ 17.342239][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.348852][ T1] CR2: 0000000000000000 CR3: 000000000d130000 CR4: 000= 00000003506e0 [ 17.356912][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 000= 0000000000000 [ 17.364907][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 000= 0000000000400 [ 17.372924][ T1] Call Trace: [ 17.376200][ T1] [ 17.379331][ T1] ? __warn+0x162/0x4a0 [ 17.383486][ T1] ? integrity_inode_get+0x499/0x580 [ 17.388813][ T1] ? report_bug+0x2b3/0x500 [ 17.393312][ T1] ? integrity_inode_get+0x499/0x580 [ 17.398712][ T1] ? handle_bug+0x3d/0x70 [ 17.403043][ T1] ? exc_invalid_op+0x1a/0x50 [ 17.407747][ T1] ? asm_exc_invalid_op+0x1a/0x20 [ 17.412768][ T1] ? integrity_inode_get+0x244/0x580 [ 17.418159][ T1] ? integrity_inode_get+0x499/0x580 [ 17.423885][ T1] ? integrity_inode_get+0x499/0x580 [ 17.429210][ T1] process_measurement+0x44d/0x1cf0 [ 17.434430][ T1] ? ima_file_mmap+0x2b0/0x2b0 [ 17.439238][ T1] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 17.445312][ T1] ? print_irqtrace_events+0x220/0x220 [ 17.450839][ T1] ? smack_current_getsecid_subj+0x22/0xf0 [ 17.456665][ T1] ima_bprm_check+0x128/0x2b0 [ 17.461376][ T1] ? ima_file_mprotect+0x630/0x630 [ 17.466596][ T1] ? tomoyo_bprm_check_security+0x157/0x170 [ 17.472718][ T1] ? bpf_lsm_bprm_check_security+0x9/0x10 [ 17.478532][ T1] bprm_execve+0x8c7/0x17c0 [ 17.483078][ T1] ? alloc_bprm+0x900/0x900 [ 17.487748][ T1] ? copy_string_kernel+0x1c9/0x1f0 [ 17.492960][ T1] kernel_execve+0x8ea/0xa10 [ 17.497605][ T1] ? rest_init+0x300/0x300 [ 17.502038][ T1] kernel_init+0xde/0x2a0 [ 17.506364][ T1] ret_from_fork+0x48/0x80 [ 17.510808][ T1] ? rest_init+0x300/0x300 [ 17.515229][ T1] ret_from_fork_asm+0x11/0x20 [ 17.520045][ T1] [ 17.523071][ T1] Kernel panic - not syncing: kernel: panic_on_warn se= t ... [ 17.530373][ T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.6.0-rc4-= syzkaller-00001-g79be50b1a644 #0 [ 17.540081][ T1] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 09/06/2023 [ 17.550128][ T1] Call Trace: [ 17.553400][ T1] [ 17.556320][ T1] dump_stack_lvl+0x1e7/0x2d0 [ 17.561004][ T1] ? nf_tcp_handle_invalid+0x650/0x650 [ 17.566476][ T1] ? panic+0x770/0x770 [ 17.570546][ T1] ? vscnprintf+0x5d/0x80 [ 17.574964][ T1] panic+0x30f/0x770 [ 17.578877][ T1] ? __warn+0x171/0x4a0 [ 17.583027][ T1] ? __memcpy_flushcache+0x2b0/0x2b0 [ 17.588307][ T1] ? ret_from_fork_asm+0x11/0x20 [ 17.593262][ T1] __warn+0x314/0x4a0 [ 17.597275][ T1] ? integrity_inode_get+0x499/0x580 [ 17.602597][ T1] report_bug+0x2b3/0x500 [ 17.606935][ T1] ? integrity_inode_get+0x499/0x580 [ 17.612218][ T1] handle_bug+0x3d/0x70 [ 17.616365][ T1] exc_invalid_op+0x1a/0x50 [ 17.620862][ T1] asm_exc_invalid_op+0x1a/0x20 [ 17.625711][ T1] RIP: 0010:integrity_inode_get+0x499/0x580 [ 17.631598][ T1] Code: eb 11 e8 ba 30 8c fd 48 c7 c7 60 e4 92 8d e8 b= e 1e d6 06 4c 89 e0 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 97 30 8= c fd <0f> 0b 31 db e9 b0 fd ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c [ 17.651202][ T1] RSP: 0000:ffffc900000678f0 EFLAGS: 00010293 [ 17.657365][ T1] RAX: ffffffff8401db19 RBX: 00000000ffffffff RCX: fff= f888015e58000 [ 17.665448][ T1] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 000= 0000000000001 [ 17.673405][ T1] RBP: ffff88801db8aad8 R08: ffffffff8401d8c4 R09: 000= 0000000000000 [ 17.681392][ T1] R10: ffff88802871d088 R11: ffffed10050e3a13 R12: fff= f88802871d000 [ 17.689449][ T1] R13: ffff88802871d0d0 R14: dffffc0000000000 R15: fff= f88801db8aab0 [ 17.697440][ T1] ? integrity_inode_get+0x244/0x580 [ 17.702744][ T1] ? integrity_inode_get+0x499/0x580 [ 17.708088][ T1] process_measurement+0x44d/0x1cf0 [ 17.713299][ T1] ? ima_file_mmap+0x2b0/0x2b0 [ 17.718152][ T1] ? lockdep_hardirqs_on_prepare+0x43c/0x7a0 [ 17.724212][ T1] ? print_irqtrace_events+0x220/0x220 [ 17.729771][ T1] ? smack_current_getsecid_subj+0x22/0xf0 [ 17.735568][ T1] ima_bprm_check+0x128/0x2b0 [ 17.740240][ T1] ? ima_file_mprotect+0x630/0x630 [ 17.745342][ T1] ? tomoyo_bprm_check_security+0x157/0x170 [ 17.751221][ T1] ? bpf_lsm_bprm_check_security+0x9/0x10 [ 17.756946][ T1] bprm_execve+0x8c7/0x17c0 [ 17.761458][ T1] ? alloc_bprm+0x900/0x900 [ 17.765952][ T1] ? copy_string_kernel+0x1c9/0x1f0 [ 17.771134][ T1] kernel_execve+0x8ea/0xa10 [ 17.775738][ T1] ? rest_init+0x300/0x300 [ 17.780153][ T1] kernel_init+0xde/0x2a0 [ 17.784472][ T1] ret_from_fork+0x48/0x80 [ 17.788876][ T1] ? rest_init+0x300/0x300 [ 17.793276][ T1] ret_from_fork_asm+0x11/0x20 [ 17.798036][ T1] [ 17.801282][ T1] Kernel Offset: disabled [ 17.805673][ T1] Rebooting in 86400 seconds.. 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"/usr/local/go" GOSUMDB=3D"sum.golang.org" GOTMPDIR=3D"" GOTOOLDIR=3D"/usr/local/go/pkg/tool/linux_amd64" GOVCS=3D"" GOVERSION=3D"go1.20.1" 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= -fdebug-prefix-map=3D/tmp/go-build3394607480=3D/tmp/go-build -gno-record-g= cc-switches" git status (err=3D) HEAD detached at 0b6a67ac4 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:32: run command via tools/syz-env for best compatibility, see: Makefile:33: 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 bin/syz-sysgen touch .descriptions GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D0b6a67ac4b0dc26f43030c5edd01c9175f13b784 -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20230913-073137'" "-tags= =3Dsyz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer= github.com/google/syzkaller/syz-fuzzer GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D0b6a67ac4b0dc26f43030c5edd01c9175f13b784 -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20230913-073137'" "-tags= =3Dsyz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execpr= og github.com/google/syzkaller/tools/syz-execprog GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D0b6a67ac4b0dc26f43030c5edd01c9175f13b784 -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20230913-073137'" "-tags= =3Dsyz_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 -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 -fpermissive -w -DGOOS_linux=3D1 -DGOARCH_amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"0b6a67ac4b0dc26f43030c5edd01c9175f= 13b784\" Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=3D137bc1b2680000 Tested on: commit: 79be50b1 ima: annotate iint mutex to avoid lockdep fal.. git tree: https://github.com/amir73il/linux ima-ovl-fix kernel config: https://syzkaller.appspot.com/x/.config?x=3D57da1ac039c4c78= a dashboard link: https://syzkaller.appspot.com/bug?extid=3Db42fe626038981fb7= bfa compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debia= n) 2.40 Note: no patches were applied.