ci2 starts bisection 2023-04-21 21:27:59.731946439 +0000 UTC m=+43220.846773793 bisecting fixing commit since 8020ae3c051d1c9ec7b7a872e226f9720547649b building syzkaller on 7939252e4ddf50bbb9912069a40d32f6c83c4f8e ensuring issue is reproducible on original commit 8020ae3c051d1c9ec7b7a872e226f9720547649b testing commit 8020ae3c051d1c9ec7b7a872e226f9720547649b gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 3d24033d7469d7963369f1462d1221e34174630c102e97341a100bbfe2157d13 run #0: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc000ba56d0] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #1: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc000ba5770] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #2: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0006bfb30] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #3: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0006bfc20] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #4: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0006bfd10] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #5: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0006be320] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #6: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0006be410] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #7: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0006be730] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #8: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0006be820] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #9: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0006be910] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #10: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0030c0960] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #11: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0006beaa0] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #12: crashed: INFO: task hung in virtio_cleanup run #13: crashed: INFO: task hung in virtio_cleanup run #14: crashed: INFO: task hung in virtio_cleanup run #15: crashed: INFO: task hung in virtio_cleanup run #16: crashed: INFO: task hung in virtio_cleanup run #17: crashed: INFO: task hung in add_early_randomness run #18: crashed: INFO: task hung in virtio_cleanup run #19: crashed: INFO: task hung in virtio_cleanup testing current HEAD 3299fb36854fdc288bddc2c4d265f8a2e5105944 testing commit 3299fb36854fdc288bddc2c4d265f8a2e5105944 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 0b771210e063e7891b2c70d90e4dba942f014dfb62e0ae796b54db3a36503c1d run #0: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc0007af630] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #1: boot failed: create image operation failed: &{Code:QUOTA_EXCEEDED ErrorDetails:[0xc003a38050] Location: Message:Quota 'T2A_CPUS' exceeded. Limit: 64.0 in region us-central1. ForceSendFields:[] NullFields:[]}. run #2: crashed: INFO: task hung in virtio_cleanup run #3: crashed: INFO: task hung in virtio_cleanup run #4: crashed: INFO: task hung in virtio_cleanup run #5: crashed: INFO: task hung in virtio_cleanup run #6: crashed: INFO: task hung in virtio_cleanup run #7: crashed: INFO: task hung in virtio_cleanup run #8: crashed: INFO: task hung in virtio_cleanup run #9: crashed: INFO: task hung in virtio_cleanup revisions tested: 2, total time: 53m56.273050636s (build: 41m45.535031817s, test: 11m17.265297325s) the crash still happens on HEAD commit msg: Linux 5.15.108 crash: INFO: task hung in virtio_cleanup INFO: task kworker/0:3:4079 blocked for more than 143 seconds. Not tainted 5.15.108-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack: 0 pid: 4079 ppid: 2 flags:0x00000008 Workqueue: usb_hub_wq hub_event Call trace: __switch_to+0x270/0x4a8 arch/arm64/kernel/process.c:518 context_switch kernel/sched/core.c:5026 [inline] __schedule+0xe30/0x1f34 kernel/sched/core.c:6372 schedule+0x11c/0x1c8 kernel/sched/core.c:6455 schedule_timeout+0xa4/0x300 kernel/time/timer.c:1860 do_wait_for_common+0x214/0x388 kernel/sched/completion.c:85 __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x4c/0x64 kernel/sched/completion.c:138 virtio_cleanup+0x60/0x8c drivers/char/hw_random/virtio-rng.c:85 cleanup_rng drivers/char/hw_random/core.c:82 [inline] kref_put include/linux/kref.h:65 [inline] drop_current_rng+0x90/0xf4 drivers/char/hw_random/core.c:110 set_current_rng+0x27c/0x3b4 drivers/char/hw_random/core.c:97 hwrng_register+0x2b0/0x400 drivers/char/hw_random/core.c:500 chaoskey_probe+0x51c/0x854 drivers/usb/misc/chaoskey.c:205 usb_probe_interface+0x3e4/0x810 drivers/usb/core/driver.c:396 really_probe+0x1b8/0x8f4 drivers/base/dd.c:595 __driver_probe_device+0x218/0x37c drivers/base/dd.c:750 driver_probe_device+0x70/0x2a8 drivers/base/dd.c:780 __device_attach_driver+0x294/0x3ec drivers/base/dd.c:902 bus_for_each_drv+0x138/0x19c drivers/base/bus.c:427 __device_attach+0x228/0x3c8 drivers/base/dd.c:974 device_initial_probe+0x14/0x20 drivers/base/dd.c:1023 bus_probe_device+0x184/0x190 drivers/base/bus.c:487 device_add+0x68c/0xb94 drivers/base/core.c:3394 usb_set_configuration+0x1278/0x1734 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x7c/0x114 drivers/usb/core/generic.c:238 usb_probe_device+0xbc/0x1e0 drivers/usb/core/driver.c:293 really_probe+0x1b8/0x8f4 drivers/base/dd.c:595 __driver_probe_device+0x218/0x37c drivers/base/dd.c:750 driver_probe_device+0x70/0x2a8 drivers/base/dd.c:780 __device_attach_driver+0x294/0x3ec drivers/base/dd.c:902 bus_for_each_drv+0x138/0x19c drivers/base/bus.c:427 __device_attach+0x228/0x3c8 drivers/base/dd.c:974 device_initial_probe+0x14/0x20 drivers/base/dd.c:1023 bus_probe_device+0x184/0x190 drivers/base/bus.c:487 device_add+0x68c/0xb94 drivers/base/core.c:3394 usb_new_device+0x86c/0x1188 drivers/usb/core/hub.c:2568 hub_port_connect drivers/usb/core/hub.c:5358 [inline] hub_port_connect_change drivers/usb/core/hub.c:5502 [inline] port_event drivers/usb/core/hub.c:5648 [inline] hub_event+0x229c/0x3b04 drivers/usb/core/hub.c:5730 process_one_work+0x698/0xf54 kernel/workqueue.c:2306 worker_thread+0x7f8/0xe68 kernel/workqueue.c:2453 kthread+0x318/0x3ec kernel/kthread.c:319 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffff8000137693c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:268 1 lock held by hwrng/1220: #0: ffff8000146a0f08 (rng_mutex){+.+.}-{3:3}, at: get_current_rng+0x20/0xc0 drivers/char/hw_random/core.c:127 2 locks held by getty/3734: #0: ffff0000d3618098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff8000178f02e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x30c/0xe54 drivers/tty/n_tty.c:2147 6 locks held by kworker/0:3/4079: #0: ffff0000c2951d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x5a8/0xf54 kernel/workqueue.c:2279 #1: ffff80001ae77c00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x5e8/0xf54 kernel/workqueue.c:2281 #2: ffff0000cdb1f220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff0000cdb1f220 (&dev->mutex){....}-{3:3}, at: hub_event+0x170/0x3b04 drivers/usb/core/hub.c:5676 #3: ffff0000cdbd9220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #3: ffff0000cdbd9220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8c/0x3c8 drivers/base/dd.c:949 #4: ffff0000d361e1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #4: ffff0000d361e1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8c/0x3c8 drivers/base/dd.c:949 #5: ffff8000146a0f08 (rng_mutex){+.+.}-{3:3}, at: hwrng_register+0x98/0x400 drivers/char/hw_random/core.c:473 =============================================