Hello, syzbot tried to test the proposed patch but the build/boot failed: : registered new interface driver rtsx_usb [ 7.671002][ T1] usbcore: registered new interface driver viperboard [ 7.672903][ T1] usbcore: registered new interface driver dln2 [ 7.674419][ T1] usbcore: registered new interface driver pn533_usb [ 7.681042][ T1] nfcsim 0.2 initialized [ 7.681871][ T1] usbcore: registered new interface driver port100 [ 7.683273][ T1] usbcore: registered new interface driver nfcmrvl [ 7.690221][ T1] Loading iSCSI transport class v2.0-870. [ 7.709703][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues [ 7.720575][ T1] ------------[ cut here ]------------ [ 7.721959][ T1] refcount_t: decrement hit 0; leaking memory. [ 7.723401][ T1] WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 [ 7.725405][ T1] Modules linked in: [ 7.726102][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc4-syzkaller-00031-g96fca68c4fbf-dirty #0 [ 7.727850][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 7.729277][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 [ 7.730342][ T1] Code: b2 00 00 00 e8 07 05 e7 fc 5b 5d c3 cc cc cc cc e8 fb 04 e7 fc c6 05 d9 7d e4 0a 01 90 48 c7 c7 40 33 1f 8c e8 67 81 a9 fc 90 <0f> 0b 90 90 eb d9 e8 db 04 e7 fc c6 05 b6 7d e4 0a 01 90 48 c7 c7 [ 7.733682][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246 [ 7.734579][ T1] RAX: 4c11f4fbdf346600 RBX: ffff888020cfe13c RCX: ffff8880166d0000 [ 7.736062][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 7.737626][ T1] RBP: 0000000000000004 R08: ffffffff815880a2 R09: fffffbfff1c39b48 [ 7.738967][ T1] R10: dffffc0000000000 R11: fffffbfff1c39b48 R12: ffffea000502cdc0 [ 7.740234][ T1] R13: ffffea000502cdc8 R14: 1ffffd4000a059b9 R15: 0000000000000000 [ 7.741505][ T1] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 7.743319][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.744266][ T1] CR2: ffff88823ffff000 CR3: 000000000e134000 CR4: 00000000003506f0 [ 7.745934][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 7.747137][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 7.748484][ T1] Call Trace: [ 7.749033][ T1] <TASK> [ 7.749520][ T1] ? __warn+0x163/0x4e0 [ 7.750519][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.751478][ T1] ? report_bug+0x2b3/0x500 [ 7.752127][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.752989][ T1] ? handle_bug+0x3e/0x70 [ 7.753676][ T1] ? exc_invalid_op+0x1a/0x50 [ 7.754367][ T1] ? asm_exc_invalid_op+0x1a/0x20 [ 7.755231][ T1] ? __warn_printk+0x292/0x360 [ 7.756237][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.757213][ T1] ? refcount_warn_saturate+0xf9/0x1d0 [ 7.758709][ T1] __free_pages_ok+0xc60/0xd90 [ 7.759783][ T1] make_alloc_exact+0xa3/0xf0 [ 7.760537][ T1] vring_alloc_queue_split+0x20a/0x600 [ 7.761574][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10 [ 7.762858][ T1] ? vp_find_vqs+0x4c/0x4e0 [ 7.764032][ T1] ? virtscsi_probe+0x3ea/0xf60 [ 7.765068][ T1] ? virtio_dev_probe+0x991/0xaf0 [ 7.766076][ T1] ? really_probe+0x2b8/0xad0 [ 7.766989][ T1] ? driver_probe_device+0x50/0x430 [ 7.767862][ T1] vring_create_virtqueue_split+0xc6/0x310 [ 7.768991][ T1] ? ret_from_fork+0x4b/0x80 [ 7.769824][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10 [ 7.770902][ T1] vring_create_virtqueue+0xca/0x110 [ 7.771856][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.772808][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.773886][ T1] setup_vq+0xe9/0x2d0 [ 7.774638][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.775418][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.776418][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.777523][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.778656][ T1] vp_setup_vq+0xbf/0x330 [ 7.779318][ T1] ? __pfx_vp_config_changed+0x10/0x10 [ 7.780244][ T1] ? ioread16+0x2f/0x90 [ 7.780897][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.781822][ T1] vp_find_vqs_msix+0x8b2/0xc80 [ 7.782771][ T1] vp_find_vqs+0x4c/0x4e0 [ 7.783720][ T1] virtscsi_init+0x8db/0xd00 [ 7.784741][ T1] ? __pfx_virtscsi_init+0x10/0x10 [ 7.785550][ T1] ? __pfx_default_calc_sets+0x10/0x10 [ 7.786659][ T1] ? scsi_host_alloc+0xa57/0xea0 [ 7.787673][ T1] ? vp_get+0xfd/0x140 [ 7.788473][ T1] virtscsi_probe+0x3ea/0xf60 [ 7.789468][ T1] ? __pfx_virtscsi_probe+0x10/0x10 [ 7.790246][ T1] ? kernfs_add_one+0x156/0x8b0 [ 7.791590][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10 [ 7.793149][ T1] ? virtio_features_ok+0x10c/0x270 [ 7.794179][ T1] virtio_dev_probe+0x991/0xaf0 [ 7.795928][ T1] ? __pfx_virtio_dev_probe+0x10/0x10 [ 7.796830][ T1] really_probe+0x2b8/0xad0 [ 7.797762][ T1] __driver_probe_device+0x1a2/0x390 [ 7.799008][ T1] driver_probe_device+0x50/0x430 [ 7.800080][ T1] __driver_attach+0x45f/0x710 [ 7.800982][ T1] ? __pfx___driver_attach+0x10/0x10 [ 7.802135][ T1] bus_for_each_dev+0x239/0x2b0 [ 7.803466][ T1] ? __pfx___driver_attach+0x10/0x10 [ 7.804685][ T1] ? __pfx_bus_for_each_dev+0x10/0x10 [ 7.805788][ T1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 7.807328][ T1] bus_add_driver+0x347/0x620 [ 7.808200][ T1] driver_register+0x23a/0x320 [ 7.808976][ T1] virtio_scsi_init+0x69/0xe0 [ 7.809707][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.811269][ T1] do_one_initcall+0x248/0x880 [ 7.812854][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.813969][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 7.815128][ T1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 7.816629][ T1] ? __pfx_parse_args+0x10/0x10 [ 7.817705][ T1] ? do_initcalls+0x1c/0x80 [ 7.818397][ T1] ? rcu_is_watching+0x15/0xb0 [ 7.819245][ T1] do_initcall_level+0x157/0x210 [ 7.820362][ T1] do_initcalls+0x3f/0x80 [ 7.821273][ T1] kernel_init_freeable+0x435/0x5d0 [ 7.822360][ T1] ? __pfx_kernel_init_freeable+0x10/0x10 [ 7.824148][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 7.825527][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.826406][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.827457][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.828321][ T1] kernel_init+0x1d/0x2b0 [ 7.829196][ T1] ret_from_fork+0x4b/0x80 [ 7.829955][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.830754][ T1] ret_from_fork_asm+0x1a/0x30 [ 7.832029][ T1] </TASK> [ 7.832583][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 7.833890][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc4-syzkaller-00031-g96fca68c4fbf-dirty #0 [ 7.835440][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 7.835440][ T1] Call Trace: [ 7.835440][ T1] <TASK> [ 7.835440][ T1] dump_stack_lvl+0x241/0x360 [ 7.835440][ T1] ? __pfx_dump_stack_lvl+0x10/0x10 [ 7.835440][ T1] ? __pfx__printk+0x10/0x10 [ 7.835440][ T1] ? _printk+0xd5/0x120 [ 7.835440][ T1] ? vscnprintf+0x5d/0x90 [ 7.835440][ T1] panic+0x349/0x860 [ 7.835440][ T1] ? __warn+0x172/0x4e0 [ 7.845404][ T1] ? __pfx_panic+0x10/0x10 [ 7.845404][ T1] ? show_trace_log_lvl+0x4e6/0x520 [ 7.845404][ T1] ? ret_from_fork_asm+0x1a/0x30 [ 7.845404][ T1] __warn+0x346/0x4e0 [ 7.845404][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.845404][ T1] report_bug+0x2b3/0x500 [ 7.845404][ T1] ? refcount_warn_saturate+0xfa/0x1d0 [ 7.845404][ T1] handle_bug+0x3e/0x70 [ 7.845404][ T1] exc_invalid_op+0x1a/0x50 [ 7.855352][ T1] asm_exc_invalid_op+0x1a/0x20 [ 7.855352][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 [ 7.855352][ T1] Code: b2 00 00 00 e8 07 05 e7 fc 5b 5d c3 cc cc cc cc e8 fb 04 e7 fc c6 05 d9 7d e4 0a 01 90 48 c7 c7 40 33 1f 8c e8 67 81 a9 fc 90 <0f> 0b 90 90 eb d9 e8 db 04 e7 fc c6 05 b6 7d e4 0a 01 90 48 c7 c7 [ 7.855352][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246 [ 7.855352][ T1] RAX: 4c11f4fbdf346600 RBX: ffff888020cfe13c RCX: ffff8880166d0000 [ 7.855352][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 7.865369][ T1] RBP: 0000000000000004 R08: ffffffff815880a2 R09: fffffbfff1c39b48 [ 7.865369][ T1] R10: dffffc0000000000 R11: fffffbfff1c39b48 R12: ffffea000502cdc0 [ 7.865369][ T1] R13: ffffea000502cdc8 R14: 1ffffd4000a059b9 R15: 0000000000000000 [ 7.865369][ T1] ? __warn_printk+0x292/0x360 [ 7.865369][ T1] ? refcount_warn_saturate+0xf9/0x1d0 [ 7.865369][ T1] __free_pages_ok+0xc60/0xd90 [ 7.865369][ T1] make_alloc_exact+0xa3/0xf0 [ 7.875273][ T1] vring_alloc_queue_split+0x20a/0x600 [ 7.875273][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10 [ 7.875273][ T1] ? vp_find_vqs+0x4c/0x4e0 [ 7.875273][ T1] ? virtscsi_probe+0x3ea/0xf60 [ 7.875273][ T1] ? virtio_dev_probe+0x991/0xaf0 [ 7.875273][ T1] ? really_probe+0x2b8/0xad0 [ 7.875273][ T1] ? driver_probe_device+0x50/0x430 [ 7.875273][ T1] vring_create_virtqueue_split+0xc6/0x310 [ 7.875273][ T1] ? ret_from_fork+0x4b/0x80 [ 7.875273][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10 [ 7.885398][ T1] vring_create_virtqueue+0xca/0x110 [ 7.885398][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.885398][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.885398][ T1] setup_vq+0xe9/0x2d0 [ 7.885398][ T1] ? __pfx_vp_notify+0x10/0x10 [ 7.885398][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.885398][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.885398][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.885398][ T1] vp_setup_vq+0xbf/0x330 [ 7.895327][ T1] ? __pfx_vp_config_changed+0x10/0x10 [ 7.895327][ T1] ? ioread16+0x2f/0x90 [ 7.895327][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10 [ 7.895327][ T1] vp_find_vqs_msix+0x8b2/0xc80 [ 7.895327][ T1] vp_find_vqs+0x4c/0x4e0 [ 7.895327][ T1] virtscsi_init+0x8db/0xd00 [ 7.895327][ T1] ? __pfx_virtscsi_init+0x10/0x10 [ 7.895327][ T1] ? __pfx_default_calc_sets+0x10/0x10 [ 7.895327][ T1] ? scsi_host_alloc+0xa57/0xea0 [ 7.895327][ T1] ? vp_get+0xfd/0x140 [ 7.895327][ T1] virtscsi_probe+0x3ea/0xf60 [ 7.895327][ T1] ? __pfx_virtscsi_probe+0x10/0x10 [ 7.905395][ T1] ? kernfs_add_one+0x156/0x8b0 [ 7.905395][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10 [ 7.905395][ T1] ? virtio_features_ok+0x10c/0x270 [ 7.905395][ T1] virtio_dev_probe+0x991/0xaf0 [ 7.905395][ T1] ? __pfx_virtio_dev_probe+0x10/0x10 [ 7.905395][ T1] really_probe+0x2b8/0xad0 [ 7.905395][ T1] __driver_probe_device+0x1a2/0x390 [ 7.905395][ T1] driver_probe_device+0x50/0x430 [ 7.905395][ T1] __driver_attach+0x45f/0x710 [ 7.915312][ T1] ? __pfx___driver_attach+0x10/0x10 [ 7.915312][ T1] bus_for_each_dev+0x239/0x2b0 [ 7.915312][ T1] ? __pfx___driver_attach+0x10/0x10 [ 7.915312][ T1] ? __pfx_bus_for_each_dev+0x10/0x10 [ 7.915312][ T1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 7.915312][ T1] bus_add_driver+0x347/0x620 [ 7.915312][ T1] driver_register+0x23a/0x320 [ 7.915312][ T1] virtio_scsi_init+0x69/0xe0 [ 7.915312][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.915312][ T1] do_one_initcall+0x248/0x880 [ 7.925360][ T1] ? __pfx_virtio_scsi_init+0x10/0x10 [ 7.925360][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 7.925360][ T1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 7.925360][ T1] ? __pfx_parse_args+0x10/0x10 [ 7.925360][ T1] ? do_initcalls+0x1c/0x80 [ 7.925360][ T1] ? rcu_is_watching+0x15/0xb0 [ 7.925360][ T1] do_initcall_level+0x157/0x210 [ 7.925360][ T1] do_initcalls+0x3f/0x80 [ 7.925360][ T1] kernel_init_freeable+0x435/0x5d0 [ 7.925360][ T1] ? __pfx_kernel_init_freeable+0x10/0x10 [ 7.935268][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 7.935268][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.935268][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.935268][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.935268][ T1] kernel_init+0x1d/0x2b0 [ 7.935268][ T1] ret_from_fork+0x4b/0x80 [ 7.935268][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.935268][ T1] ret_from_fork_asm+0x1a/0x30 [ 7.935268][ T1] </TASK> [ 7.935268][ T1] Kernel Offset: disabled [ 7.935268][ 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-build3076711685=/tmp/go-build -gno-record-gcc-switches' git status (err=<nil>) HEAD detached at c8349e485 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=c8349e48534ea6d8f01515335d95de8ebf5da8df -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240412-102842'" "-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=c8349e48534ea6d8f01515335d95de8ebf5da8df -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240412-102842'" "-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=c8349e48534ea6d8f01515335d95de8ebf5da8df -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240412-102842'" "-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=\"c8349e48534ea6d8f01515335d95de8ebf5da8df\" Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=112cfbcd180000 Tested on: commit: 96fca68c Merge tag 'nfsd-6.9-3' of git://git.kernel.or.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git linus kernel config: https://syzkaller.appspot.com/x/.config?x=d239903bd07761e5 dashboard link: https://syzkaller.appspot.com/bug?extid=ad1b592fc4483655438b compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=10fd1a3b180000
