Hello, syzbot tried to test the proposed patch but the build/boot failed: rd [ 7.642260][ T1] usbcore: registered new interface driver dln2 [ 7.645615][ T1] usbcore: registered new interface driver pn533_usb [ 7.653071][ T1] nfcsim 0.2 initialized [ 7.654695][ T1] usbcore: registered new interface driver port100 [ 7.656867][ T1] usbcore: registered new interface driver nfcmrvl [ 7.665132][ T1] Loading iSCSI transport class v2.0-870. [ 7.683597][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues [ 7.695844][ T1] ------------[ cut here ]------------ [ 7.697288][ T1] refcount_t: decrement hit 0; leaking memory. [ 7.699005][ T1] WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 [ 7.701375][ T1] Modules linked in: [ 7.702534][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc2-syzkaller-00004-g38bac6fb80a8 #0 [ 7.704651][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 7.706586][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 [ 7.707973][ T1] Code: b2 00 00 00 e8 07 c9 e9 fc 5b 5d c3 cc cc cc cc e8 fb c8 e9 fc c6 05 11 fa e7 0a 01 90 48 c7 c7 20 37 1f 8c e8 07 64 ac fc 90 <0f> 0b 90 90 eb d9 e8 db c8 e9 fc c6 05 ee f9 e7 0a 01 90 48 c7 c7 [ 7.711681][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246 [ 7.713246][ T1] RAX: 80ca843c79c95400 RBX: ffff888020c7401c RCX: ffff8880166d0000 [ 7.715799][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 7.718268][ T1] RBP: 0000000000000004 R08: ffffffff8157ffc2 R09: fffffbfff1c39af8 [ 7.720624][ T1] R10: dffffc0000000000 R11: fffffbfff1c39af8 R12: ffffea0000843dc0 [ 7.722734][ T1] R13: ffffea0000843dc8 R14: 1ffffd40001087b9 R15: 0000000000000000 [ 7.725099][ T1] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 7.726800][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.728599][ T1] CR2: ffff88823ffff000 CR3: 000000000e134000 CR4: 00000000003506f0 [ 7.731733][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 7.733755][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 7.736386][ T1] Call Trace: [ 7.737123][ T1] <TASK> [ 7.738006][ T1] ? __warn+0x163/0x4e0 [ 7.740239][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.741359][ T1] ? report_bug+0x2b3/0x500 [ 7.742315][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.744221][ T1] ? handle_bug+0x3e/0x70 [ 7.745585][ T1] ? exc_invalid_op+0x1a/0x50 [ 7.746621][ T1] ? asm_exc_invalid_op+0x1a/0x20 [ 7.747841][ T1] ? __warn_printk+0x292/0x360 [ 7.749317][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.751175][ T1] ? refcount_warn_saturate+0xf9/0x1d0 [ 7.753784][ T1] __free_pages_ok+0xc60/0xd90 [ 7.755034][ T1] make_alloc_exact+0xa3/0xf0 [ 7.756224][ T1] vring_alloc_queue_split+0x20a/0x600 [ 7.757834][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10 [ 7.758900][ T1] ? vp_find_vqs+0x4c/0x4e0 [ 7.759818][ T1] ? virtscsi_probe+0x3ea/0xf60 [ 7.761405][ T1] ? virtio_dev_probe+0x991/0xaf0 [ 7.763004][ T1] ? really_probe+0x2b8/0xad0 [ 7.764204][ T1] ? driver_probe_device+0x50/0x430 [ 7.765429][ T1] vring_create_virtqueue_split+0xc6/0x310 [ 7.766771][ T1] ? ret_from_fork+0x4b/0x80 [ 7.767981][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10 [ 7.769915][ T1] vring_create_virtqueue+0xca/0x110 [ 7.771623][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.773424][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.775021][ T1] setup_vq+0xe9/0x2d0 [ 7.775787][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.776793][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.778866][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.780614][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.782273][ T1] vp_setup_vq+0xbf/0x330 [ 7.783410][ T1] ? __pfx_vp_config_changed+0x10/0x10 [ 7.784986][ T1] ? ioread16+0x2f/0x90 [ 7.786652][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.788199][ T1] vp_find_vqs_msix+0x8b2/0xc80 [ 7.789141][ T1] vp_find_vqs+0x4c/0x4e0 [ 7.790440][ T1] virtscsi_init+0x8db/0xd00 [ 7.791488][ T1] ? __pfx_virtscsi_init+0x10/0x10 [ 7.792682][ T1] ? __pfx_default_calc_sets+0x10/0x10 [ 7.794430][ T1] ? scsi_host_alloc+0xa57/0xea0 [ 7.795521][ T1] ? vp_get+0xfd/0x140 [ 7.796236][ T1] virtscsi_probe+0x3ea/0xf60 [ 7.797138][ T1] ? __pfx_virtscsi_probe+0x10/0x10 [ 7.798431][ T1] ? kernfs_add_one+0x156/0x8b0 [ 7.800087][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10 [ 7.800985][ T1] ? virtio_features_ok+0x10c/0x270 [ 7.801835][ T1] virtio_dev_probe+0x991/0xaf0 [ 7.804175][ T1] ? __pfx_virtio_dev_probe+0x10/0x10 [ 7.805887][ T1] really_probe+0x2b8/0xad0 [ 7.807150][ T1] __driver_probe_device+0x1a2/0x390 [ 7.808227][ T1] driver_probe_device+0x50/0x430 [ 7.809376][ T1] __driver_attach+0x45f/0x710 [ 7.810502][ T1] ? __pfx___driver_attach+0x10/0x10 [ 7.811607][ T1] bus_for_each_dev+0x239/0x2b0 [ 7.812602][ T1] ? __pfx___driver_attach+0x10/0x10 [ 7.813726][ T1] ? __pfx_bus_for_each_dev+0x10/0x10 [ 7.814800][ T1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 7.816656][ T1] bus_add_driver+0x347/0x620 [ 7.817772][ T1] driver_register+0x23a/0x320 [ 7.818808][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.819842][ T1] virtio_scsi_init+0x65/0xe0 [ 7.820896][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.822020][ T1] do_one_initcall+0x248/0x880 [ 7.822891][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.823925][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 7.825313][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 7.826394][ T1] ? __pfx_parse_args+0x10/0x10 [ 7.827532][ T1] ? do_initcalls+0x1c/0x80 [ 7.828853][ T1] ? rcu_is_watching+0x15/0xb0 [ 7.830432][ T1] do_initcall_level+0x157/0x210 [ 7.831313][ T1] do_initcalls+0x3f/0x80 [ 7.832573][ T1] kernel_init_freeable+0x435/0x5d0 [ 7.833476][ T1] ? __pfx_kernel_init_freeable+0x10/0x10 [ 7.834461][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 7.836095][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.837265][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.838679][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.839592][ T1] kernel_init+0x1d/0x2b0 [ 7.840621][ T1] ret_from_fork+0x4b/0x80 [ 7.841417][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.842402][ T1] ret_from_fork_asm+0x1a/0x30 [ 7.843630][ T1] </TASK> [ 7.844181][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 7.845673][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc2-syzkaller-00004-g38bac6fb80a8 #0 [ 7.847124][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 7.848661][ T1] Call Trace: [ 7.848661][ T1] <TASK> [ 7.848661][ T1] dump_stack_lvl+0x241/0x360 [ 7.848661][ T1] ? __pfx_dump_stack_lvl+0x10/0x10 [ 7.848661][ T1] ? __pfx__printk+0x10/0x10 [ 7.848661][ T1] ? _printk+0xd5/0x120 [ 7.848661][ T1] ? vscnprintf+0x5d/0x90 [ 7.848661][ T1] panic+0x349/0x860 [ 7.848661][ T1] ? __warn+0x172/0x4e0 [ 7.858266][ T1] ? __pfx_panic+0x10/0x10 [ 7.858266][ T1] ? show_trace_log_lvl+0x4e6/0x520 [ 7.858266][ T1] ? ret_from_fork_asm+0x1a/0x30 [ 7.858266][ T1] __warn+0x346/0x4e0 [ 7.858266][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.858266][ T1] report_bug+0x2b3/0x500 [ 7.858266][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.858266][ T1] handle_bug+0x3e/0x70 [ 7.868191][ T1] exc_invalid_op+0x1a/0x50 [ 7.868191][ T1] asm_exc_invalid_op+0x1a/0x20 [ 7.868191][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 [ 7.868191][ T1] Code: b2 00 00 00 e8 07 c9 e9 fc 5b 5d c3 cc cc cc cc e8 fb c8 e9 fc c6 05 11 fa e7 0a 01 90 48 c7 c7 20 37 1f 8c e8 07 64 ac fc 90 <0f> 0b 90 90 eb d9 e8 db c8 e9 fc c6 05 ee f9 e7 0a 01 90 48 c7 c7 [ 7.868191][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246 [ 7.878283][ T1] RAX: 80ca843c79c95400 RBX: ffff888020c7401c RCX: ffff8880166d0000 [ 7.878283][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 7.878283][ T1] RBP: 0000000000000004 R08: ffffffff8157ffc2 R09: fffffbfff1c39af8 [ 7.878283][ T1] R10: dffffc0000000000 R11: fffffbfff1c39af8 R12: ffffea0000843dc0 [ 7.878283][ T1] R13: ffffea0000843dc8 R14: 1ffffd40001087b9 R15: 0000000000000000 [ 7.878283][ T1] ? __warn_printk+0x292/0x360 [ 7.888190][ T1] ? refcount_warn_saturate+0xf9/0x1d0 [ 7.888190][ T1] __free_pages_ok+0xc60/0xd90 [ 7.888190][ T1] make_alloc_exact+0xa3/0xf0 [ 7.888190][ T1] vring_alloc_queue_split+0x20a/0x600 [ 7.888190][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10 [ 7.888190][ T1] ? vp_find_vqs+0x4c/0x4e0 [ 7.888190][ T1] ? virtscsi_probe+0x3ea/0xf60 [ 7.888190][ T1] ? virtio_dev_probe+0x991/0xaf0 [ 7.898282][ T1] ? really_probe+0x2b8/0xad0 [ 7.898282][ T1] ? driver_probe_device+0x50/0x430 [ 7.898282][ T1] vring_create_virtqueue_split+0xc6/0x310 [ 7.898282][ T1] ? ret_from_fork+0x4b/0x80 [ 7.898282][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10 [ 7.898282][ T1] vring_create_virtqueue+0xca/0x110 [ 7.898282][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.898282][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.908146][ T1] setup_vq+0xe9/0x2d0 [ 7.908146][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.908146][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.908146][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.908146][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.908146][ T1] vp_setup_vq+0xbf/0x330 [ 7.908146][ T1] ? __pfx_vp_config_changed+0x10/0x10 [ 7.908146][ T1] ? ioread16+0x2f/0x90 [ 7.908146][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.918266][ T1] vp_find_vqs_msix+0x8b2/0xc80 [ 7.918266][ T1] vp_find_vqs+0x4c/0x4e0 [ 7.918266][ T1] virtscsi_init+0x8db/0xd00 [ 7.918266][ T1] ? __pfx_virtscsi_init+0x10/0x10 [ 7.918266][ T1] ? __pfx_default_calc_sets+0x10/0x10 [ 7.918266][ T1] ? scsi_host_alloc+0xa57/0xea0 [ 7.918266][ T1] ? vp_get+0xfd/0x140 [ 7.918266][ T1] virtscsi_probe+0x3ea/0xf60 [ 7.918266][ T1] ? __pfx_virtscsi_probe+0x10/0x10 [ 7.918266][ T1] ? kernfs_add_one+0x156/0x8b0 [ 7.918266][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10 [ 7.928228][ T1] ? virtio_features_ok+0x10c/0x270 [ 7.928228][ T1] virtio_dev_probe+0x991/0xaf0 [ 7.928228][ T1] ? __pfx_virtio_dev_probe+0x10/0x10 [ 7.928228][ T1] really_probe+0x2b8/0xad0 [ 7.928228][ T1] __driver_probe_device+0x1a2/0x390 [ 7.928228][ T1] driver_probe_device+0x50/0x430 [ 7.928228][ T1] __driver_attach+0x45f/0x710 [ 7.928228][ T1] ? __pfx___driver_attach+0x10/0x10 [ 7.928228][ T1] bus_for_each_dev+0x239/0x2b0 [ 7.928228][ T1] ? __pfx___driver_attach+0x10/0x10 [ 7.928228][ T1] ? __pfx_bus_for_each_dev+0x10/0x10 [ 7.938278][ T1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 7.938278][ T1] bus_add_driver+0x347/0x620 [ 7.938278][ T1] driver_register+0x23a/0x320 [ 7.938278][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.938278][ T1] virtio_scsi_init+0x65/0xe0 [ 7.938278][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.938278][ T1] do_one_initcall+0x248/0x880 [ 7.938278][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.948187][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 7.948187][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 7.948187][ T1] ? __pfx_parse_args+0x10/0x10 [ 7.948187][ T1] ? do_initcalls+0x1c/0x80 [ 7.948187][ T1] ? rcu_is_watching+0x15/0xb0 [ 7.948187][ T1] do_initcall_level+0x157/0x210 [ 7.948187][ T1] do_initcalls+0x3f/0x80 [ 7.948187][ T1] kernel_init_freeable+0x435/0x5d0 [ 7.948187][ T1] ? __pfx_kernel_init_freeable+0x10/0x10 [ 7.948187][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 7.948187][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.958283][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.958283][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.958283][ T1] kernel_init+0x1d/0x2b0 [ 7.958283][ T1] ret_from_fork+0x4b/0x80 [ 7.958283][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.958283][ T1] ret_from_fork_asm+0x1a/0x30 [ 7.958283][ T1] </TASK> [ 7.958283][ T1] Kernel Offset: disabled [ 7.958283][ T1] 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-2/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs-2/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='go1.21.4' GCCGO='gccgo' GOAMD64='v1' AR='ar' CC='gcc' CXX='g++' CGO_ENABLED='1' GOMOD='/syzkaller/jobs-2/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-build2267282665=/tmp/go-build -gno-record-gcc-switches' git status (err=<nil>) HEAD detached at 0ee3535ea 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 touch .descriptions GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=0ee3535ea8ff21d50e44372bb1cfd147e299ab5b -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240404-085507'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=0ee3535ea8ff21d50e44372bb1cfd147e299ab5b -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240404-085507'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/prog.GitRevision=0ee3535ea8ff21d50e44372bb1cfd147e299ab5b -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240404-085507'" "-tags=syz_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 -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 -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"0ee3535ea8ff21d50e44372bb1cfd147e299ab5b\" Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=16dbfd89180000 Tested on: commit: 38bac6fb erofs: add a reserved buffer pool for lz4 dec.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git dev kernel config: https://syzkaller.appspot.com/x/.config?x=51cdcd4a8f332569 dashboard link: https://syzkaller.appspot.com/bug?extid=27cc650ef45b379dfe5a compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.
