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Message-ID: <0000000000001ed7a3061cbbf360@google.com>
Date: Mon, 08 Jul 2024 05:57:03 -0700
From: syzbot <syzbot+c793a7eca38803212c61@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, marcello.bauer@...ements.com,
syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [usb?] INFO: rcu detected stall in schedule_timeout (6)
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
ed and is inactive
[ 8.065856][ T1] VMCI host device registered (name=vmci, major=10, minor=118)
[ 8.067088][ T1] Initialized host personality
[ 8.068117][ T1] usbcore: registered new interface driver rtsx_usb
[ 8.070125][ T1] usbcore: registered new interface driver viperboard
[ 8.071892][ T1] usbcore: registered new interface driver dln2
[ 8.073319][ T1] usbcore: registered new interface driver pn533_usb
[ 8.078767][ T1] nfcsim 0.2 initialized
[ 8.079834][ T1] usbcore: registered new interface driver port100
[ 8.081361][ T1] usbcore: registered new interface driver nfcmrvl
[ 8.088191][ T1] Loading iSCSI transport class v2.0-870.
[ 8.105151][ T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues
[ 8.115364][ T1] ------------[ cut here ]------------
[ 8.116193][ T1] refcount_t: decrement hit 0; leaking memory.
[ 8.117360][ T1] WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0
[ 8.118807][ T1] Modules linked in:
[ 8.119367][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc2-syzkaller-00080-gf9cebdd4b3ae #0
[ 8.121072][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 8.122601][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0
[ 8.123564][ T1] Code: b2 00 00 00 e8 87 a5 e9 fc 5b 5d c3 cc cc cc cc e8 7b a5 e9 fc c6 05 a1 6d e7 0a 01 90 48 c7 c7 e0 2d 1f 8c e8 97 22 ac fc 90 <0f> 0b 90 90 eb d9 e8 5b a5 e9 fc c6 05 7e 6d e7 0a 01 90 48 c7 c7
[ 8.126607][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246
[ 8.127651][ T1] RAX: 9b910bae5b922500 RBX: ffff888020c11c7c RCX: ffff8880166d0000
[ 8.128884][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 8.130007][ T1] RBP: 0000000000000004 R08: ffffffff8157ffc2 R09: fffffbfff1c39af8
[ 8.131294][ T1] R10: dffffc0000000000 R11: fffffbfff1c39af8 R12: ffffea000083cdc0
[ 8.132681][ T1] R13: ffffea000083cdc8 R14: 1ffffd40001079b9 R15: 0000000000000000
[ 8.133862][ T1] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
[ 8.135323][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 8.136308][ T1] CR2: ffff88823ffff000 CR3: 000000000e134000 CR4: 00000000003506f0
[ 8.137722][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8.138999][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 8.140319][ T1] Call Trace:
[ 8.140799][ T1] <TASK>
[ 8.141321][ T1] ? __warn+0x163/0x4e0
[ 8.142184][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 8.143462][ T1] ? report_bug+0x2b3/0x500
[ 8.144778][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 8.145681][ T1] ? handle_bug+0x3e/0x70
[ 8.146414][ T1] ? exc_invalid_op+0x1a/0x50
[ 8.147536][ T1] ? asm_exc_invalid_op+0x1a/0x20
[ 8.148532][ T1] ? __warn_printk+0x292/0x360
[ 8.149212][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 8.150077][ T1] ? refcount_warn_saturate+0xf9/0x1d0
[ 8.151091][ T1] __free_pages_ok+0xc60/0xd90
[ 8.151926][ T1] make_alloc_exact+0xa3/0xf0
[ 8.152681][ T1] vring_alloc_queue_split+0x20a/0x600
[ 8.153912][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10
[ 8.155093][ T1] ? vp_find_vqs+0x4c/0x4e0
[ 8.155873][ T1] ? virtscsi_probe+0x3ea/0xf60
[ 8.156657][ T1] ? virtio_dev_probe+0x991/0xaf0
[ 8.157342][ T1] ? really_probe+0x2b8/0xad0
[ 8.158003][ T1] ? driver_probe_device+0x50/0x430
[ 8.158765][ T1] vring_create_virtqueue_split+0xc6/0x310
[ 8.159700][ T1] ? ret_from_fork+0x4b/0x80
[ 8.160390][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10
[ 8.161411][ T1] vring_create_virtqueue+0xca/0x110
[ 8.162280][ T1] ? __pfx_vp_notify+0x10/0x10
[ 8.163017][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.163859][ T1] setup_vq+0xe9/0x2d0
[ 8.164548][ T1] ? __pfx_vp_notify+0x10/0x10
[ 8.165381][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.166164][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.166933][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.167732][ T1] vp_setup_vq+0xbf/0x330
[ 8.168623][ T1] ? __pfx_vp_config_changed+0x10/0x10
[ 8.169661][ T1] ? ioread16+0x2f/0x90
[ 8.170432][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.171351][ T1] vp_find_vqs_msix+0x8b2/0xc80
[ 8.172139][ T1] vp_find_vqs+0x4c/0x4e0
[ 8.172876][ T1] virtscsi_init+0x8db/0xd00
[ 8.173612][ T1] ? __pfx_virtscsi_init+0x10/0x10
[ 8.174332][ T1] ? __pfx_default_calc_sets+0x10/0x10
[ 8.175242][ T1] ? scsi_host_alloc+0xa57/0xea0
[ 8.176177][ T1] ? vp_get+0xfd/0x140
[ 8.176820][ T1] virtscsi_probe+0x3ea/0xf60
[ 8.177627][ T1] ? __pfx_virtscsi_probe+0x10/0x10
[ 8.178547][ T1] ? kernfs_add_one+0x156/0x8b0
[ 8.179550][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10
[ 8.180421][ T1] ? virtio_features_ok+0x10c/0x270
[ 8.181247][ T1] virtio_dev_probe+0x991/0xaf0
[ 8.181952][ T1] ? __pfx_virtio_dev_probe+0x10/0x10
[ 8.182739][ T1] really_probe+0x2b8/0xad0
[ 8.183450][ T1] __driver_probe_device+0x1a2/0x390
[ 8.184253][ T1] driver_probe_device+0x50/0x430
[ 8.184939][ T1] __driver_attach+0x45f/0x710
[ 8.185658][ T1] ? __pfx___driver_attach+0x10/0x10
[ 8.186422][ T1] bus_for_each_dev+0x239/0x2b0
[ 8.187437][ T1] ? __pfx___driver_attach+0x10/0x10
[ 8.188193][ T1] ? __pfx_bus_for_each_dev+0x10/0x10
[ 8.189040][ T1] ? do_raw_spin_unlock+0x13c/0x8b0
[ 8.189802][ T1] bus_add_driver+0x347/0x620
[ 8.190543][ T1] driver_register+0x23a/0x320
[ 8.191437][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.192230][ T1] virtio_scsi_init+0x65/0xe0
[ 8.192916][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.193751][ T1] do_one_initcall+0x248/0x880
[ 8.194502][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.195284][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 8.196190][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 8.197127][ T1] ? __pfx_parse_args+0x10/0x10
[ 8.197999][ T1] ? do_initcalls+0x1c/0x80
[ 8.198670][ T1] ? rcu_is_watching+0x15/0xb0
[ 8.199361][ T1] do_initcall_level+0x157/0x210
[ 8.200179][ T1] do_initcalls+0x3f/0x80
[ 8.200925][ T1] kernel_init_freeable+0x435/0x5d0
[ 8.201758][ T1] ? __pfx_kernel_init_freeable+0x10/0x10
[ 8.202801][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 8.203709][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.204550][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.205234][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.205954][ T1] kernel_init+0x1d/0x2b0
[ 8.206612][ T1] ret_from_fork+0x4b/0x80
[ 8.207259][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.208083][ T1] ret_from_fork_asm+0x1a/0x30
[ 8.208765][ T1] </TASK>
[ 8.209243][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 8.210243][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc2-syzkaller-00080-gf9cebdd4b3ae #0
[ 8.210893][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 8.210893][ T1] Call Trace:
[ 8.210893][ T1] <TASK>
[ 8.210893][ T1] dump_stack_lvl+0x241/0x360
[ 8.210893][ T1] ? __pfx_dump_stack_lvl+0x10/0x10
[ 8.210893][ T1] ? __pfx__printk+0x10/0x10
[ 8.210893][ T1] ? _printk+0xd5/0x120
[ 8.210893][ T1] ? vscnprintf+0x5d/0x90
[ 8.210893][ T1] panic+0x349/0x860
[ 8.210893][ T1] ? __warn+0x172/0x4e0
[ 8.210893][ T1] ? __pfx_panic+0x10/0x10
[ 8.210893][ T1] ? show_trace_log_lvl+0x4e6/0x520
[ 8.210893][ T1] ? ret_from_fork_asm+0x1a/0x30
[ 8.210893][ T1] __warn+0x346/0x4e0
[ 8.210893][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 8.210893][ T1] report_bug+0x2b3/0x500
[ 8.210893][ T1] ? refcount_warn_saturate+0xfa/0x1d0
[ 8.210893][ T1] handle_bug+0x3e/0x70
[ 8.210893][ T1] exc_invalid_op+0x1a/0x50
[ 8.210893][ T1] asm_exc_invalid_op+0x1a/0x20
[ 8.210893][ T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0
[ 8.210893][ T1] Code: b2 00 00 00 e8 87 a5 e9 fc 5b 5d c3 cc cc cc cc e8 7b a5 e9 fc c6 05 a1 6d e7 0a 01 90 48 c7 c7 e0 2d 1f 8c e8 97 22 ac fc 90 <0f> 0b 90 90 eb d9 e8 5b a5 e9 fc c6 05 7e 6d e7 0a 01 90 48 c7 c7
[ 8.210893][ T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246
[ 8.210893][ T1] RAX: 9b910bae5b922500 RBX: ffff888020c11c7c RCX: ffff8880166d0000
[ 8.210893][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 8.210893][ T1] RBP: 0000000000000004 R08: ffffffff8157ffc2 R09: fffffbfff1c39af8
[ 8.210893][ T1] R10: dffffc0000000000 R11: fffffbfff1c39af8 R12: ffffea000083cdc0
[ 8.210893][ T1] R13: ffffea000083cdc8 R14: 1ffffd40001079b9 R15: 0000000000000000
[ 8.210893][ T1] ? __warn_printk+0x292/0x360
[ 8.210893][ T1] ? refcount_warn_saturate+0xf9/0x1d0
[ 8.210893][ T1] __free_pages_ok+0xc60/0xd90
[ 8.210893][ T1] make_alloc_exact+0xa3/0xf0
[ 8.210893][ T1] vring_alloc_queue_split+0x20a/0x600
[ 8.210893][ T1] ? __pfx_vring_alloc_queue_split+0x10/0x10
[ 8.210893][ T1] ? vp_find_vqs+0x4c/0x4e0
[ 8.210893][ T1] ? virtscsi_probe+0x3ea/0xf60
[ 8.210893][ T1] ? virtio_dev_probe+0x991/0xaf0
[ 8.210893][ T1] ? really_probe+0x2b8/0xad0
[ 8.210893][ T1] ? driver_probe_device+0x50/0x430
[ 8.210893][ T1] vring_create_virtqueue_split+0xc6/0x310
[ 8.251039][ T1] ? ret_from_fork+0x4b/0x80
[ 8.251039][ T1] ? __pfx_vring_create_virtqueue_split+0x10/0x10
[ 8.251039][ T1] vring_create_virtqueue+0xca/0x110
[ 8.251039][ T1] ? __pfx_vp_notify+0x10/0x10
[ 8.251039][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.251039][ T1] setup_vq+0xe9/0x2d0
[ 8.251039][ T1] ? __pfx_vp_notify+0x10/0x10
[ 8.251039][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.251039][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.251039][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.251039][ T1] vp_setup_vq+0xbf/0x330
[ 8.251039][ T1] ? __pfx_vp_config_changed+0x10/0x10
[ 8.251039][ T1] ? ioread16+0x2f/0x90
[ 8.251039][ T1] ? __pfx_virtscsi_ctrl_done+0x10/0x10
[ 8.251039][ T1] vp_find_vqs_msix+0x8b2/0xc80
[ 8.251039][ T1] vp_find_vqs+0x4c/0x4e0
[ 8.251039][ T1] virtscsi_init+0x8db/0xd00
[ 8.251039][ T1] ? __pfx_virtscsi_init+0x10/0x10
[ 8.251039][ T1] ? __pfx_default_calc_sets+0x10/0x10
[ 8.251039][ T1] ? scsi_host_alloc+0xa57/0xea0
[ 8.251039][ T1] ? vp_get+0xfd/0x140
[ 8.251039][ T1] virtscsi_probe+0x3ea/0xf60
[ 8.251039][ T1] ? __pfx_virtscsi_probe+0x10/0x10
[ 8.251039][ T1] ? kernfs_add_one+0x156/0x8b0
[ 8.251039][ T1] ? virtio_no_restricted_mem_acc+0x9/0x10
[ 8.251039][ T1] ? virtio_features_ok+0x10c/0x270
[ 8.251039][ T1] virtio_dev_probe+0x991/0xaf0
[ 8.251039][ T1] ? __pfx_virtio_dev_probe+0x10/0x10
[ 8.251039][ T1] really_probe+0x2b8/0xad0
[ 8.251039][ T1] __driver_probe_device+0x1a2/0x390
[ 8.251039][ T1] driver_probe_device+0x50/0x430
[ 8.251039][ T1] __driver_attach+0x45f/0x710
[ 8.251039][ T1] ? __pfx___driver_attach+0x10/0x10
[ 8.251039][ T1] bus_for_each_dev+0x239/0x2b0
[ 8.251039][ T1] ? __pfx___driver_attach+0x10/0x10
[ 8.251039][ T1] ? __pfx_bus_for_each_dev+0x10/0x10
[ 8.251039][ T1] ? do_raw_spin_unlock+0x13c/0x8b0
[ 8.251039][ T1] bus_add_driver+0x347/0x620
[ 8.251039][ T1] driver_register+0x23a/0x320
[ 8.251039][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.251039][ T1] virtio_scsi_init+0x65/0xe0
[ 8.251039][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.251039][ T1] do_one_initcall+0x248/0x880
[ 8.251039][ T1] ? __pfx_virtio_scsi_init+0x10/0x10
[ 8.301021][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 8.301021][ T1] ? __pfx_do_one_initcall+0x10/0x10
[ 8.301021][ T1] ? __pfx_parse_args+0x10/0x10
[ 8.301021][ T1] ? do_initcalls+0x1c/0x80
[ 8.301021][ T1] ? rcu_is_watching+0x15/0xb0
[ 8.301021][ T1] do_initcall_level+0x157/0x210
[ 8.301021][ T1] do_initcalls+0x3f/0x80
[ 8.301021][ T1] kernel_init_freeable+0x435/0x5d0
[ 8.301021][ T1] ? __pfx_kernel_init_freeable+0x10/0x10
[ 8.301021][ T1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 8.301021][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.301021][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.301021][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.301021][ T1] kernel_init+0x1d/0x2b0
[ 8.301021][ T1] ret_from_fork+0x4b/0x80
[ 8.301021][ T1] ? __pfx_kernel_init+0x10/0x10
[ 8.301021][ T1] ret_from_fork_asm+0x1a/0x30
[ 8.301021][ T1] </TASK>
[ 8.301021][ T1] Kernel Offset: disabled
[ 8.301021][ 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/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs/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/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-build1076745083=/tmp/go-build -gno-record-gcc-switches'
git status (err=<nil>)
HEAD detached at 9026e14289
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=9026e14289eaf45a00ddddb8730f2092b956d99a -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240510-174117'" "-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=9026e14289eaf45a00ddddb8730f2092b956d99a -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240510-174117'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \
-m64 -std=c++11 -I. -Iexecutor/_include -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=\"9026e14289eaf45a00ddddb8730f2092b956d99a\"
Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=12219041980000
Tested on:
commit: f9cebdd4 usb: gadget: dummy_hcd: make hrtimer expire i..
git tree: https://github.com/9elements/linux.git test_patch_dummy_hcd_hrtimer_fix
kernel config: https://syzkaller.appspot.com/x/.config?x=12fe7aa3e6d549f1
dashboard link: https://syzkaller.appspot.com/bug?extid=c793a7eca38803212c61
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
Note: no patches were applied.
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