Re: [syzbot] [bpf?] [net?] general protection fault in dev_map_enqueue

[syzbot]

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

erface driver port100
[    7.948791][    T1] usbcore: registered new interface driver nfcmrvl
[    7.955639][    T1] Loading iSCSI transport class v2.0-870.
[    7.973810][    T1] virtio_scsi virtio0: 1/0/0 default/read/poll queues
[    7.989145][    T1] ------------[ cut here ]------------
[    7.990111][    T1] refcount_t: decrement hit 0; leaking memory.
[    7.991339][    T1] WARNING: CPU: 0 PID: 1 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0
[    7.993340][    T1] Modules linked in:
[    7.994199][    T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.8.0-syzkaller-11136-g66a27abac311-dirty #0
[    7.997619][    T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[    8.000127][    T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0
[    8.001771][    T1] Code: b2 00 00 00 e8 e7 e2 ec fc 5b 5d c3 cc cc cc cc e8 db e2 ec fc c6 05 c6 89 ea 0a 01 90 48 c7 c7 60 ae 1e 8c e8 47 a8 af fc 90 <0f> 0b 90 90 eb d9 e8 bb e2 ec fc c6 05 a3 89 ea 0a 01 90 48 c7 c7
[    8.004380][    T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246
[    8.005254][    T1] RAX: ca7328f93391fe00 RBX: ffff888020f9e75c RCX: ffff8880166e0000
[    8.006549][    T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[    8.008086][    T1] RBP: 0000000000000004 R08: ffffffff8157e022 R09: fffffbfff1c39660
[    8.009562][    T1] R10: dffffc0000000000 R11: fffffbfff1c39660 R12: ffffea0000851dc0
[    8.011291][    T1] R13: ffffea0000851dc8 R14: 1ffffd400010a3b9 R15: 0000000000000000
[    8.012581][    T1] FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
[    8.014131][    T1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    8.016303][    T1] CR2: ffff88823ffff000 CR3: 000000000e132000 CR4: 00000000003506f0
[    8.017899][    T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    8.019084][    T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    8.020661][    T1] Call Trace:
[    8.021839][    T1]  <TASK>
[    8.022284][    T1]  ? __warn+0x163/0x4b0
[    8.022899][    T1]  ? refcount_warn_saturate+0xfa/0x1d0
[    8.024608][    T1]  ? report_bug+0x2b3/0x500
[    8.025925][    T1]  ? refcount_warn_saturate+0xfa/0x1d0
[    8.030150][    T1]  ? handle_bug+0x3e/0x70
[    8.031086][    T1]  ? exc_invalid_op+0x1a/0x50
[    8.033097][    T1]  ? asm_exc_invalid_op+0x1a/0x20
[    8.034748][    T1]  ? __warn_printk+0x292/0x360
[    8.037244][    T1]  ? refcount_warn_saturate+0xfa/0x1d0
[    8.039638][    T1]  ? refcount_warn_saturate+0xf9/0x1d0
[    8.041044][    T1]  __free_pages_ok+0xc42/0xd70
[    8.042367][    T1]  make_alloc_exact+0xa3/0xf0
[    8.044313][    T1]  vring_alloc_queue_split+0x20a/0x600
[    8.046844][    T1]  ? __pfx_vring_alloc_queue_split+0x10/0x10
[    8.048504][    T1]  ? vp_find_vqs+0x4c/0x4e0
[    8.049295][    T1]  ? virtscsi_probe+0x3ea/0xf60
[    8.050056][    T1]  ? virtio_dev_probe+0x991/0xaf0
[    8.051457][    T1]  ? really_probe+0x29e/0xc50
[    8.053456][    T1]  ? driver_probe_device+0x50/0x430
[    8.054843][    T1]  vring_create_virtqueue_split+0xc6/0x310
[    8.056263][    T1]  ? ret_from_fork+0x4b/0x80
[    8.057026][    T1]  ? __pfx_vring_create_virtqueue_split+0x10/0x10
[    8.058003][    T1]  vring_create_virtqueue+0xca/0x110
[    8.058950][    T1]  ? __pfx_vp_notify+0x10/0x10
[    8.060241][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.061548][    T1]  setup_vq+0xe9/0x2d0
[    8.062720][    T1]  ? __pfx_vp_notify+0x10/0x10
[    8.066249][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.068677][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.070491][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.071820][    T1]  vp_setup_vq+0xbf/0x330
[    8.073020][    T1]  ? __pfx_vp_config_changed+0x10/0x10
[    8.075411][    T1]  ? ioread16+0x2f/0x90
[    8.076389][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.077767][    T1]  vp_find_vqs_msix+0x8b2/0xc80
[    8.078910][    T1]  vp_find_vqs+0x4c/0x4e0
[    8.080111][    T1]  virtscsi_init+0x8db/0xd00
[    8.081712][    T1]  ? __pfx_virtscsi_init+0x10/0x10
[    8.082801][    T1]  ? __pfx_default_calc_sets+0x10/0x10
[    8.083916][    T1]  ? scsi_host_alloc+0xa57/0xea0
[    8.085236][    T1]  ? vp_get+0xfd/0x140
[    8.086319][    T1]  virtscsi_probe+0x3ea/0xf60
[    8.087214][    T1]  ? __pfx_virtscsi_probe+0x10/0x10
[    8.090404][    T1]  ? __pfx_vp_legacy_set_queue_address+0xd/0x10
[    8.093111][    T1]  ? __pfx_vp_set_status+0x10/0x10
[    8.094419][    T1]  ? vp_set_status+0x1a/0x40
[    8.096021][    T1]  ? virtio_no_restricted_mem_acc+0x9/0x10
[    8.099934][    T1]  ? virtio_features_ok+0x10c/0x270
[    8.101665][    T1]  virtio_dev_probe+0x991/0xaf0
[    8.102487][    T1]  ? __pfx_virtio_dev_probe+0x10/0x10
[    8.105262][    T1]  really_probe+0x29e/0xc50
[    8.106620][    T1]  __driver_probe_device+0x1a2/0x3e0
[    8.108641][    T1]  driver_probe_device+0x50/0x430
[    8.110744][    T1]  __driver_attach+0x45f/0x710
[    8.112598][    T1]  ? __pfx___driver_attach+0x10/0x10
[    8.114221][    T1]  bus_for_each_dev+0x239/0x2b0
[    8.115430][    T1]  ? __pfx___driver_attach+0x10/0x10
[    8.116906][    T1]  ? __pfx_bus_for_each_dev+0x10/0x10
[    8.120034][    T1]  ? do_raw_spin_unlock+0x13c/0x8b0
[    8.121570][    T1]  bus_add_driver+0x347/0x620
[    8.123679][    T1]  driver_register+0x23a/0x320
[    8.125189][    T1]  ? __pfx_virtio_scsi_init+0x10/0x10
[    8.127373][    T1]  virtio_scsi_init+0x65/0xe0
[    8.128421][    T1]  ? __pfx_virtio_scsi_init+0x10/0x10
[    8.129199][    T1]  do_one_initcall+0x238/0x830
[    8.129859][    T1]  ? __pfx_virtio_scsi_init+0x10/0x10
[    8.130668][    T1]  ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[    8.132091][    T1]  ? __pfx_do_one_initcall+0x10/0x10
[    8.133177][    T1]  ? __pfx_parse_args+0x10/0x10
[    8.134004][    T1]  ? do_initcalls+0x1c/0x80
[    8.134724][    T1]  ? rcu_is_watching+0x15/0xb0
[    8.135571][    T1]  do_initcall_level+0x157/0x210
[    8.136670][    T1]  do_initcalls+0x3f/0x80
[    8.137348][    T1]  kernel_init_freeable+0x435/0x5d0
[    8.138236][    T1]  ? __pfx_kernel_init_freeable+0x10/0x10
[    8.139208][    T1]  ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[    8.142052][    T1]  ? __pfx_kernel_init+0x10/0x10
[    8.143016][    T1]  ? __pfx_kernel_init+0x10/0x10
[    8.144221][    T1]  ? __pfx_kernel_init+0x10/0x10
[    8.145741][    T1]  kernel_init+0x1d/0x2b0
[    8.146662][    T1]  ret_from_fork+0x4b/0x80
[    8.147514][    T1]  ? __pfx_kernel_init+0x10/0x10
[    8.148713][    T1]  ret_from_fork_asm+0x1a/0x30
[    8.149784][    T1]  </TASK>
[    8.150600][    T1] Kernel panic - not syncing: kernel: panic_on_warn set ...
[    8.152093][    T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.8.0-syzkaller-11136-g66a27abac311-dirty #0
[    8.154786][    T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
[    8.155798][    T1] Call Trace:
[    8.155798][    T1]  <TASK>
[    8.155798][    T1]  dump_stack_lvl+0x241/0x360
[    8.155798][    T1]  ? __pfx_dump_stack_lvl+0x10/0x10
[    8.155798][    T1]  ? __pfx__printk+0x10/0x10
[    8.155798][    T1]  ? _printk+0xd5/0x120
[    8.155798][    T1]  ? vscnprintf+0x5d/0x90
[    8.155798][    T1]  panic+0x349/0x860
[    8.155798][    T1]  ? __warn+0x172/0x4b0
[    8.155798][    T1]  ? __pfx_panic+0x10/0x10
[    8.155798][    T1]  ? show_trace_log_lvl+0x4e6/0x520
[    8.155798][    T1]  ? ret_from_fork_asm+0x1a/0x30
[    8.155798][    T1]  __warn+0x31e/0x4b0
[    8.155798][    T1]  ? refcount_warn_saturate+0xfa/0x1d0
[    8.155798][    T1]  report_bug+0x2b3/0x500
[    8.155798][    T1]  ? refcount_warn_saturate+0xfa/0x1d0
[    8.155798][    T1]  handle_bug+0x3e/0x70
[    8.155798][    T1]  exc_invalid_op+0x1a/0x50
[    8.155798][    T1]  asm_exc_invalid_op+0x1a/0x20
[    8.155798][    T1] RIP: 0010:refcount_warn_saturate+0xfa/0x1d0
[    8.155798][    T1] Code: b2 00 00 00 e8 e7 e2 ec fc 5b 5d c3 cc cc cc cc e8 db e2 ec fc c6 05 c6 89 ea 0a 01 90 48 c7 c7 60 ae 1e 8c e8 47 a8 af fc 90 <0f> 0b 90 90 eb d9 e8 bb e2 ec fc c6 05 a3 89 ea 0a 01 90 48 c7 c7
[    8.155798][    T1] RSP: 0000:ffffc90000066e18 EFLAGS: 00010246
[    8.155798][    T1] RAX: ca7328f93391fe00 RBX: ffff888020f9e75c RCX: ffff8880166e0000
[    8.155798][    T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[    8.155798][    T1] RBP: 0000000000000004 R08: ffffffff8157e022 R09: fffffbfff1c39660
[    8.155798][    T1] R10: dffffc0000000000 R11: fffffbfff1c39660 R12: ffffea0000851dc0
[    8.196035][    T1] R13: ffffea0000851dc8 R14: 1ffffd400010a3b9 R15: 0000000000000000
[    8.196035][    T1]  ? __warn_printk+0x292/0x360
[    8.196035][    T1]  ? refcount_warn_saturate+0xf9/0x1d0
[    8.196035][    T1]  __free_pages_ok+0xc42/0xd70
[    8.196035][    T1]  make_alloc_exact+0xa3/0xf0
[    8.196035][    T1]  vring_alloc_queue_split+0x20a/0x600
[    8.196035][    T1]  ? __pfx_vring_alloc_queue_split+0x10/0x10
[    8.196035][    T1]  ? vp_find_vqs+0x4c/0x4e0
[    8.196035][    T1]  ? virtscsi_probe+0x3ea/0xf60
[    8.196035][    T1]  ? virtio_dev_probe+0x991/0xaf0
[    8.196035][    T1]  ? really_probe+0x29e/0xc50
[    8.196035][    T1]  ? driver_probe_device+0x50/0x430
[    8.196035][    T1]  vring_create_virtqueue_split+0xc6/0x310
[    8.196035][    T1]  ? ret_from_fork+0x4b/0x80
[    8.196035][    T1]  ? __pfx_vring_create_virtqueue_split+0x10/0x10
[    8.196035][    T1]  vring_create_virtqueue+0xca/0x110
[    8.196035][    T1]  ? __pfx_vp_notify+0x10/0x10
[    8.196035][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.196035][    T1]  setup_vq+0xe9/0x2d0
[    8.196035][    T1]  ? __pfx_vp_notify+0x10/0x10
[    8.196035][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.196035][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.196035][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.196035][    T1]  vp_setup_vq+0xbf/0x330
[    8.196035][    T1]  ? __pfx_vp_config_changed+0x10/0x10
[    8.196035][    T1]  ? ioread16+0x2f/0x90
[    8.196035][    T1]  ? __pfx_virtscsi_ctrl_done+0x10/0x10
[    8.196035][    T1]  vp_find_vqs_msix+0x8b2/0xc80
[    8.196035][    T1]  vp_find_vqs+0x4c/0x4e0
[    8.196035][    T1]  virtscsi_init+0x8db/0xd00
[    8.196035][    T1]  ? __pfx_virtscsi_init+0x10/0x10
[    8.196035][    T1]  ? __pfx_default_calc_sets+0x10/0x10
[    8.196035][    T1]  ? scsi_host_alloc+0xa57/0xea0
[    8.196035][    T1]  ? vp_get+0xfd/0x140
[    8.196035][    T1]  virtscsi_probe+0x3ea/0xf60
[    8.196035][    T1]  ? __pfx_virtscsi_probe+0x10/0x10
[    8.196035][    T1]  ? __pfx_vp_legacy_set_queue_address+0xd/0x10
[    8.196035][    T1]  ? __pfx_vp_set_status+0x10/0x10
[    8.196035][    T1]  ? vp_set_status+0x1a/0x40
[    8.196035][    T1]  ? virtio_no_restricted_mem_acc+0x9/0x10
[    8.196035][    T1]  ? virtio_features_ok+0x10c/0x270
[    8.196035][    T1]  virtio_dev_probe+0x991/0xaf0
[    8.196035][    T1]  ? __pfx_virtio_dev_probe+0x10/0x10
[    8.196035][    T1]  really_probe+0x29e/0xc50
[    8.196035][    T1]  __driver_probe_device+0x1a2/0x3e0
[    8.196035][    T1]  driver_probe_device+0x50/0x430
[    8.196035][    T1]  __driver_attach+0x45f/0x710
[    8.196035][    T1]  ? __pfx___driver_attach+0x10/0x10
[    8.196035][    T1]  bus_for_each_dev+0x239/0x2b0
[    8.196035][    T1]  ? __pfx___driver_attach+0x10/0x10
[    8.196035][    T1]  ? __pfx_bus_for_each_dev+0x10/0x10
[    8.196035][    T1]  ? do_raw_spin_unlock+0x13c/0x8b0
[    8.246039][    T1]  bus_add_driver+0x347/0x620
[    8.246039][    T1]  driver_register+0x23a/0x320
[    8.246039][    T1]  ? __pfx_virtio_scsi_init+0x10/0x10
[    8.246039][    T1]  virtio_scsi_init+0x65/0xe0
[    8.246039][    T1]  ? __pfx_virtio_scsi_init+0x10/0x10
[    8.246039][    T1]  do_one_initcall+0x238/0x830
[    8.246039][    T1]  ? __pfx_virtio_scsi_init+0x10/0x10
[    8.246039][    T1]  ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[    8.246039][    T1]  ? __pfx_do_one_initcall+0x10/0x10
[    8.246039][    T1]  ? __pfx_parse_args+0x10/0x10
[    8.246039][    T1]  ? do_initcalls+0x1c/0x80
[    8.246039][    T1]  ? rcu_is_watching+0x15/0xb0
[    8.246039][    T1]  do_initcall_level+0x157/0x210
[    8.246039][    T1]  do_initcalls+0x3f/0x80
[    8.246039][    T1]  kernel_init_freeable+0x435/0x5d0
[    8.246039][    T1]  ? __pfx_kernel_init_freeable+0x10/0x10
[    8.246039][    T1]  ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[    8.246039][    T1]  ? __pfx_kernel_init+0x10/0x10
[    8.246039][    T1]  ? __pfx_kernel_init+0x10/0x10
[    8.246039][    T1]  ? __pfx_kernel_init+0x10/0x10
[    8.246039][    T1]  kernel_init+0x1d/0x2b0
[    8.246039][    T1]  ret_from_fork+0x4b/0x80
[    8.246039][    T1]  ? __pfx_kernel_init+0x10/0x10
[    8.246039][    T1]  ret_from_fork_asm+0x1a/0x30
[    8.246039][    T1]  </TASK>
[    8.246039][    T1] Kernel Offset: disabled
[    8.246039][    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-build1926694584=/tmp/go-build -gno-record-gcc-switches'

git status (err=<nil>)
HEAD detached at 454571b6a
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=454571b6a16598f5a6e015b9fb1a04932bce7ab9 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240326-163935'" "-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=454571b6a16598f5a6e015b9fb1a04932bce7ab9 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240326-163935'" "-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=454571b6a16598f5a6e015b9fb1a04932bce7ab9 -X 'github.com/google/syzkaller/prog.gitRevisionDate=20240326-163935'" "-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=\"454571b6a16598f5a6e015b9fb1a04932bce7ab9\"


Error text is too large and was truncated, full error text is at:
https://syzkaller.appspot.com/x/error.txt?x=114224ee180000


Tested on:

commit:         66a27aba Merge tag 'powerpc-6.9-1' of git://git.kernel..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=9f5be5e6842dd192
dashboard link: https://syzkaller.appspot.com/bug?extid=af9492708df9797198d6
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1624aed9180000