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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: [ T1] Guest personality initialized and is inactive [ 8.065736][ T1] VMCI host device registered (name=3Dvmci, major=3D10= , minor=3D118) [ 8.066898][ T1] Initialized host personality [ 8.067968][ T1] usbcore: registered new interface driver rtsx_usb [ 8.069719][ T1] usbcore: registered new interface driver viperboard [ 8.071465][ T1] usbcore: registered new interface driver dln2 [ 8.073269][ T1] usbcore: registered new interface driver pn533_usb [ 8.080360][ T1] nfcsim 0.2 initialized [ 8.081593][ T1] usbcore: registered new interface driver port100 [ 8.083254][ T1] usbcore: registered new interface driver nfcmrvl [ 8.090665][ T1] Loading iSCSI transport class v2.0-870. [ 8.107172][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues [ 8.119694][ T1] ------------[ cut here ]------------ [ 8.120886][ T1] refcount_t: decrement hit 0; leaking memory. [ 8.122941][ T1] WARNING: CPU: 1 PID: 1 at lib/refcount.c:31 refcount= _warn_saturate+0xfa/0x1d0 [ 8.124604][ T1] Modules linked in: [ 8.125320][ T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc1-= syzkaller #0 [ 8.127017][ T1] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 04/02/2024 [ 8.128730][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 [ 8.129741][ T1] Code: b2 00 00 00 e8 57 79 f2 fc 5b 5d c3 cc cc cc c= c e8 4b 79 f2 fc c6 05 01 fb ce 0a 01 90 48 c7 c7 e0 54 fe 8b e8 a7 f7 b4 f= c 90 <0f> 0b 90 90 eb d9 e8 2b 79 f2 fc c6 05 de fa ce 0a 01 90 48 c7 c7 [ 8.133290][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246 [ 8.134369][ T1] RAX: b8e9523c774d7100 RBX: ffff8880203d0a8c RCX: fff= f8880166c8000 [ 8.135762][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000= 0000000000000 [ 8.137141][ T1] RBP: 0000000000000004 R08: ffffffff8157ffe2 R09: fff= ffbfff1bf96e0 [ 8.138764][ T1] R10: dffffc0000000000 R11: fffffbfff1bf96e0 R12: fff= fea000502edc0 [ 8.141948][ T1] R13: ffffea000502edc8 R14: 1ffffd4000a05db9 R15: 000= 0000000000000 [ 8.144186][ T1] FS: 0000000000000000(0000) GS:ffff8880b9500000(0000= ) knlGS:0000000000000000 [ 8.146310][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.147355][ T1] CR2: 0000000000000000 CR3: 000000000df32000 CR4: 000= 00000003506f0 [ 8.149092][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 000= 0000000000000 [ 8.150505][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 000= 0000000000400 [ 8.151931][ T1] Call Trace: [ 8.152557][ T1] [ 8.153004][ T1] ? __warn+0x163/0x4e0 [ 8.154626][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 8.156204][ T1] ? report_bug+0x2b3/0x500 [ 8.156899][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 8.158521][ T1] ? handle_bug+0x3e/0x70 [ 8.159414][ T1] ? exc_invalid_op+0x1a/0x50 [ 8.160449][ T1] ? asm_exc_invalid_op+0x1a/0x20 [ 8.161415][ T1] ? __warn_printk+0x292/0x360 [ 8.162726][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 8.164466][ T1] ? refcount_warn_saturate+0xf9/0x1d0 [ 8.165736][ T1] __free_pages_ok+0xc54/0xd80 [ 8.166494][ T1] make_alloc_exact+0xa3/0xf0 [ 8.167154][ T1] vring_alloc_queue_split+0x20a/0x600 [ 8.168021][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10 [ 8.168973][ T1] ? vp_find_vqs+0x4c/0x4e0 [ 8.169799][ T1] ? virtscsi_probe+0x3ea/0xf60 [ 8.170503][ T1] ? virtio_dev_probe+0x991/0xaf0 [ 8.172229][ T1] ? really_probe+0x2b8/0xad0 [ 8.173145][ T1] ? driver_probe_device+0x50/0x430 [ 8.175331][ T1] vring_create_virtqueue_split+0xc6/0x310 [ 8.176580][ T1] ? ret_from_fork+0x4b/0x80 [ 8.177623][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10 [ 8.178852][ T1] vring_create_virtqueue+0xca/0x110 [ 8.179950][ T1] ? __pfx_vp_notify+0x10/0x10 [ 8.181275][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.182572][ T1] setup_vq+0xe9/0x2d0 [ 8.184410][ T1] ? __pfx_vp_notify+0x10/0x10 [ 8.185361][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.186662][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.188204][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.190228][ T1] vp_setup_vq+0xbf/0x330 [ 8.191078][ T1] ? __pfx_vp_config_changed+0x10/0x10 [ 8.192362][ T1] ? ioread16+0x2f/0x90 [ 8.193064][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.194742][ T1] vp_find_vqs_msix+0x8b2/0xc80 [ 8.196215][ T1] vp_find_vqs+0x4c/0x4e0 [ 8.197081][ T1] virtscsi_init+0x8db/0xd00 [ 8.198316][ T1] ? __pfx_virtscsi_init+0x10/0x10 [ 8.200122][ T1] ? __pfx_default_calc_sets+0x10/0x10 [ 8.200874][ T1] ? scsi_host_alloc+0xa57/0xea0 [ 8.201727][ T1] ? vp_get+0xfd/0x140 [ 8.202349][ T1] virtscsi_probe+0x3ea/0xf60 [ 8.203024][ T1] ? __pfx_virtscsi_probe+0x10/0x10 [ 8.204543][ T1] ? kernfs_add_one+0x156/0x8b0 [ 8.205433][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10 [ 8.206402][ T1] ? virtio_features_ok+0x10c/0x270 [ 8.207289][ T1] virtio_dev_probe+0x991/0xaf0 [ 8.208213][ T1] ? __pfx_virtio_dev_probe+0x10/0x10 [ 8.209222][ T1] really_probe+0x2b8/0xad0 [ 8.210139][ T1] __driver_probe_device+0x1a2/0x390 [ 8.210945][ T1] driver_probe_device+0x50/0x430 [ 8.211643][ T1] __driver_attach+0x45f/0x710 [ 8.212336][ T1] ? __pfx___driver_attach+0x10/0x10 [ 8.214017][ T1] bus_for_each_dev+0x239/0x2b0 [ 8.215024][ T1] ? __pfx___driver_attach+0x10/0x10 [ 8.216260][ T1] ? __pfx_bus_for_each_dev+0x10/0x10 [ 8.217520][ T1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 8.218492][ T1] bus_add_driver+0x347/0x620 [ 8.219338][ T1] driver_register+0x23a/0x320 [ 8.220395][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.221416][ T1] virtio_scsi_init+0x65/0xe0 [ 8.222076][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.222889][ T1] do_one_initcall+0x248/0x880 [ 8.223972][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.225067][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 8.226207][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 8.227041][ T1] ? __pfx_parse_args+0x10/0x10 [ 8.227810][ T1] ? do_initcalls+0x1c/0x80 [ 8.228630][ T1] ? rcu_is_watching+0x15/0xb0 [ 8.229515][ T1] do_initcall_level+0x157/0x210 [ 8.230699][ T1] do_initcalls+0x3f/0x80 [ 8.231545][ T1] kernel_init_freeable+0x435/0x5d0 [ 8.232482][ T1] ? __pfx_kernel_init_freeable+0x10/0x10 [ 8.233398][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 8.234520][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.236078][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.236866][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.237618][ T1] kernel_init+0x1d/0x2b0 [ 8.238281][ T1] ret_from_fork+0x4b/0x80 [ 8.238919][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.239745][ T1] ret_from_fork_asm+0x1a/0x30 [ 8.240541][ T1] [ 8.241009][ T1] Kernel panic - not syncing: kernel: panic_on_warn se= t ... [ 8.241978][ T1] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc1-= syzkaller #0 [ 8.243074][ T1] Hardware name: Google Google Compute Engine/Google C= ompute Engine, BIOS Google 04/02/2024 [ 8.244259][ T1] Call Trace: [ 8.244259][ T1] [ 8.244259][ T1] dump_stack_lvl+0x241/0x360 [ 8.244259][ T1] ? __pfx_dump_stack_lvl+0x10/0x10 [ 8.244259][ T1] ? __pfx__printk+0x10/0x10 [ 8.244259][ T1] ? _printk+0xd5/0x120 [ 8.244259][ T1] ? vscnprintf+0x5d/0x90 [ 8.244259][ T1] panic+0x349/0x860 [ 8.244259][ T1] ? __warn+0x172/0x4e0 [ 8.244259][ T1] ? __pfx_panic+0x10/0x10 [ 8.244259][ T1] ? show_trace_log_lvl+0x4e6/0x520 [ 8.244259][ T1] ? ret_from_fork_asm+0x1a/0x30 [ 8.244259][ T1] __warn+0x346/0x4e0 [ 8.253569][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 8.253569][ T1] report_bug+0x2b3/0x500 [ 8.253569][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 8.253569][ T1] handle_bug+0x3e/0x70 [ 8.253569][ T1] exc_invalid_op+0x1a/0x50 [ 8.253569][ T1] asm_exc_invalid_op+0x1a/0x20 [ 8.253569][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 [ 8.253569][ T1] Code: b2 00 00 00 e8 57 79 f2 fc 5b 5d c3 cc cc cc c= c e8 4b 79 f2 fc c6 05 01 fb ce 0a 01 90 48 c7 c7 e0 54 fe 8b e8 a7 f7 b4 f= c 90 <0f> 0b 90 90 eb d9 e8 2b 79 f2 fc c6 05 de fa ce 0a 01 90 48 c7 c7 [ 8.253569][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246 [ 8.263675][ T1] RAX: b8e9523c774d7100 RBX: ffff8880203d0a8c RCX: fff= f8880166c8000 [ 8.263675][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000= 0000000000000 [ 8.263675][ T1] RBP: 0000000000000004 R08: ffffffff8157ffe2 R09: fff= ffbfff1bf96e0 [ 8.263675][ T1] R10: dffffc0000000000 R11: fffffbfff1bf96e0 R12: fff= fea000502edc0 [ 8.263675][ T1] R13: ffffea000502edc8 R14: 1ffffd4000a05db9 R15: 000= 0000000000000 [ 8.263675][ T1] ? __warn_printk+0x292/0x360 [ 8.263675][ T1] ? refcount_warn_saturate+0xf9/0x1d0 [ 8.263675][ T1] __free_pages_ok+0xc54/0xd80 [ 8.273618][ T1] make_alloc_exact+0xa3/0xf0 [ 8.273618][ T1] vring_alloc_queue_split+0x20a/0x600 [ 8.273618][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10 [ 8.273618][ T1] ? vp_find_vqs+0x4c/0x4e0 [ 8.273618][ T1] ? virtscsi_probe+0x3ea/0xf60 [ 8.273618][ T1] ? virtio_dev_probe+0x991/0xaf0 [ 8.273618][ T1] ? really_probe+0x2b8/0xad0 [ 8.273618][ T1] ? driver_probe_device+0x50/0x430 [ 8.273618][ T1] vring_create_virtqueue_split+0xc6/0x310 [ 8.273618][ T1] ? ret_from_fork+0x4b/0x80 [ 8.273618][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10 [ 8.283681][ T1] vring_create_virtqueue+0xca/0x110 [ 8.283681][ T1] ? __pfx_vp_notify+0x10/0x10 [ 8.283681][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.283681][ T1] setup_vq+0xe9/0x2d0 [ 8.283681][ T1] ? __pfx_vp_notify+0x10/0x10 [ 8.283681][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.283681][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.283681][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.283681][ T1] vp_setup_vq+0xbf/0x330 [ 8.293704][ T1] ? __pfx_vp_config_changed+0x10/0x10 [ 8.293704][ T1] ? ioread16+0x2f/0x90 [ 8.293704][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 8.293704][ T1] vp_find_vqs_msix+0x8b2/0xc80 [ 8.293704][ T1] vp_find_vqs+0x4c/0x4e0 [ 8.293704][ T1] virtscsi_init+0x8db/0xd00 [ 8.293704][ T1] ? __pfx_virtscsi_init+0x10/0x10 [ 8.293704][ T1] ? __pfx_default_calc_sets+0x10/0x10 [ 8.293704][ T1] ? scsi_host_alloc+0xa57/0xea0 [ 8.293704][ T1] ? vp_get+0xfd/0x140 [ 8.293704][ T1] virtscsi_probe+0x3ea/0xf60 [ 8.303715][ T1] ? __pfx_virtscsi_probe+0x10/0x10 [ 8.303715][ T1] ? kernfs_add_one+0x156/0x8b0 [ 8.303715][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10 [ 8.303715][ T1] ? virtio_features_ok+0x10c/0x270 [ 8.303715][ T1] virtio_dev_probe+0x991/0xaf0 [ 8.303715][ T1] ? __pfx_virtio_dev_probe+0x10/0x10 [ 8.303715][ T1] really_probe+0x2b8/0xad0 [ 8.303715][ T1] __driver_probe_device+0x1a2/0x390 [ 8.303715][ T1] driver_probe_device+0x50/0x430 [ 8.303715][ T1] __driver_attach+0x45f/0x710 [ 8.303715][ T1] ? __pfx___driver_attach+0x10/0x10 [ 8.313586][ T1] bus_for_each_dev+0x239/0x2b0 [ 8.313586][ T1] ? __pfx___driver_attach+0x10/0x10 [ 8.313586][ T1] ? __pfx_bus_for_each_dev+0x10/0x10 [ 8.313586][ T1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 8.313586][ T1] bus_add_driver+0x347/0x620 [ 8.313586][ T1] driver_register+0x23a/0x320 [ 8.313586][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.313586][ T1] virtio_scsi_init+0x65/0xe0 [ 8.313586][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.313586][ T1] do_one_initcall+0x248/0x880 [ 8.313586][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 8.323752][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 8.323752][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 8.323752][ T1] ? __pfx_parse_args+0x10/0x10 [ 8.323752][ T1] ? do_initcalls+0x1c/0x80 [ 8.323752][ T1] ? rcu_is_watching+0x15/0xb0 [ 8.323752][ T1] do_initcall_level+0x157/0x210 [ 8.323752][ T1] do_initcalls+0x3f/0x80 [ 8.323752][ T1] kernel_init_freeable+0x435/0x5d0 [ 8.323752][ T1] ? __pfx_kernel_init_freeable+0x10/0x10 [ 8.323752][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 8.323752][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.333607][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.333607][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.333607][ T1] kernel_init+0x1d/0x2b0 [ 8.333607][ T1] ret_from_fork+0x4b/0x80 [ 8.333607][ T1] ? __pfx_kernel_init+0x10/0x10 [ 8.333607][ T1] ret_from_fork_asm+0x1a/0x30 [ 8.333607][ T1] [ 8.333607][ T1] Kernel Offset: disabled [ 8.333607][ 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'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/usr/local/go/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.21.4' 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-build414264796=3D/tmp/go-build -gno-record-gcc= -switches' git status (err=3D) HEAD detached at de979bc20 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=3Dde979bc20b2b73242b7d6fbbdf614a8cb4c574f4 -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20240509-085021'" "-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=3Dde979bc20b2b73242b7d6fbbdf614a8cb4c574f4 -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20240509-085021'" "-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 gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -m64 -std=3Dc++11 -I. -Iexecutor/_include -O2 -pthread -Wall -Werror -Wpar= entheses -Wunused-const-variable -Wframe-larger-than=3D16384 -Wno-stringop-= overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variabl= e -Wno-unused-command-line-argument -static-pie -fpermissive -w -DGOOS_linu= x=3D1 -DGOARCH_amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"de979bc20b2b73242b7d6fbbdf614a8cb4= c574f4\" Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=3D15f49684980000 Tested on: commit: 4cece764 Linux 6.9-rc1 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.gi= t origin kernel config: https://syzkaller.appspot.com/x/.config?x=3De98db3f73f65c23= 2 dashboard link: https://syzkaller.appspot.com/bug?extid=3D11af34d3c0711f233= fd4 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debia= n) 2.40 Note: no patches were applied.