INFO: task hung in sdio_reset

Status: upstream: reported on 2026/08/27 05:59
Subsystems: mmc
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+e8678cd3d8b65d1f2c74@syzkaller.appspotmail.com
First crash: 57d, last: 4h54m
▶ ▼ ✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision
86b3fb5f repro-c 💥 INFO: task hung in sdio_reset 2026/08/31 20:53 2026/08/31 20:56 2026/08/31 23:26 2f52988a
433d4921 assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ INFO: task hung in sdio_reset 2026/08/18 00:15 2026/08/18 00:15 2026/08/18 01:01 1e72964b
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly mmc report (Oct 2026) 0 (1) 2026/10/04 04:33
[syzbot] [kernel?] INFO: task hung in sdio_reset 0 (1) 2026/08/27 05:59
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: task hung in sdio_reset 1 4 37d 68d 0/3 upstream: reported on 2026/08/05 01:45
linux-6.6 INFO: task hung in sdio_reset 1 2 26d 39d 0/2 upstream: reported on 2026/09/02 22:08
linux-5.15 INFO: task hung in sdio_reset 1 1 11d 11d 0/3 upstream: reported on 2026/10/01 10:34

Sample crash report:
INFO: task kworker/0:12:24275 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:12    state:D stack:20744 pid:24275 tgid:24275 ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue
Workqueue: events_freezable mmc_rescan
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x17db/0x58f0 kernel/sched/core.c:7284
 __schedule_loop kernel/sched/core.c:7361 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7376
 schedule_timeout+0xc0/0x2c0 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common kernel/sched/completion.c:121 [inline]
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion+0x2ca/0x5e0 kernel/sched/completion.c:153
 mmc_wait_for_req_done+0x37/0x490 drivers/mmc/core/core.c:408
 mmc_wait_for_cmd+0x183/0x2a0 drivers/mmc/core/core.c:645
 mmc_io_rw_direct_host drivers/mmc/core/sdio_ops.c:83 [inline]
 sdio_reset+0xf4/0x3a0 drivers/mmc/core/sdio_ops.c:209
 mmc_rescan_try_freq drivers/mmc/core/core.c:2121 [inline]
 mmc_rescan+0x6eb/0x1040 drivers/mmc/core/core.c:2316
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
INFO: task kworker/0:13:24276 blocked for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:13    state:D stack:21048 pid:24276 tgid:24276 ppid:2      task_flags:0x4288060 flags:0x00080000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x17db/0x58f0 kernel/sched/core.c:7284
 __schedule_loop kernel/sched/core.c:7361 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7376
 schedule_timeout+0xc0/0x2c0 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common kernel/sched/completion.c:121 [inline]
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion+0x2ca/0x5e0 kernel/sched/completion.c:153
 __flush_work+0xa63/0xca0 kernel/workqueue.c:4448
 __cancel_work_sync+0xbf/0x110 kernel/workqueue.c:4568
 __mmc_stop_host drivers/mmc/core/core.c:2368 [inline]
 mmc_stop_host+0xd9/0x460 drivers/mmc/core/core.c:2373
 mmc_remove_host+0x15/0x60 drivers/mmc/core/host.c:681
 vub300_disconnect+0x154/0x2f0 drivers/mmc/host/vub300.c:2387
 usb_unbind_interface+0x295/0x9f0 drivers/usb/core/driver.c:461
 device_remove drivers/base/dd.c:618 [inline]
 __device_release_driver drivers/base/dd.c:1349 [inline]
 device_release_driver_internal+0x4f5/0x880 drivers/base/dd.c:1372
 bus_remove_device+0x444/0x560 drivers/base/bus.c:664
 device_del+0x524/0x8f0 drivers/base/core.c:3965
 usb_disable_device+0x3d4/0x8d0 drivers/usb/core/message.c:1484
 usb_disconnect+0x346/0x9a0 drivers/usb/core/hub.c:2355
 hub_port_connect drivers/usb/core/hub.c:5425 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5725 [inline]
 port_event drivers/usb/core/hub.c:5889 [inline]
 hub_event+0x1bbb/0x4d30 drivers/usb/core/hub.c:5971
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Showing all locks held in the system:
locks held by pool_workqueue_/3: 1, on CPU#1:
 #0: ffffffff8fd62c68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline]
 #0: ffffffff8fd62c68 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2d0/0x770 kernel/rcu/tree_exp.h:966
locks held by pr/ttyS0/16: 2, last CPU#0:
 #0: ffffffff8fc364d8 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:314 [inline]
 #0: ffffffff8fc364d8 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:439 [inline]
 #0: ffffffff8fc364d8 (console_srcu){....}-{0:0}, at: console_srcu_read_lock+0x30/0x60 kernel/printk/printk.c:291
 #1: ffffffff9bd4be38 (&port_lock_key){-.-.}-{3:3}, at: __uart_port_lock_irqsave include/linux/serial_core.h:613 [inline]
 #1: ffffffff9bd4be38 (&port_lock_key){-.-.}-{3:3}, at: univ8250_console_device_lock+0x67/0xc0 drivers/tty/serial/8250/8250_core.c:413
locks held by khungtaskd/32: 1, last CPU#1:
 #0: ffffffff8fd5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffffffff8fd5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8fd5c8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6871
locks held by getty/5372: 2, on CPU#0:
 #0: ffff8880374490a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900032432e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 drivers/tty/n_tty.c:2211
locks held by kworker/0:7/15342: 6, last CPU#0:
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
 #1: ffffc90005647c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffc90005647c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffc90005647c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #1: ffffc90005647c40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
 #2: ffff88802a9171d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
 #2: ffff88802a9171d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4d30 drivers/usb/core/hub.c:5917
 #3: ffff88802a9ab568 (&port_dev->status_lock){+.+.}-{4:4}, at: usb_lock_port drivers/usb/core/hub.c:3270 [inline]
 #3: ffff88802a9ab568 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5482 [inline]
 #3: ffff88802a9ab568 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5725 [inline]
 #3: ffff88802a9ab568 (&port_dev->status_lock){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5889 [inline]
 #3: ffff88802a9ab568 (&port_dev->status_lock){+.+.}-{4:4}, at: hub_event+0x20a1/0x4d30 drivers/usb/core/hub.c:5971
 #4: ffff88802a835560 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5483 [inline]
 #4: ffff88802a835560 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5725 [inline]
 #4: ffff88802a835560 (hcd->address0_mutex){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5889 [inline]
 #4: ffff88802a835560 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x20c9/0x4d30 drivers/usb/core/hub.c:5971
 #5: ffffffff90afed68 (ehci_cf_port_reset_rwsem){.+.+}-{4:4}, at: hub_port_reset+0x14d/0x1810 drivers/usb/core/hub.c:3085
locks held by kworker/u8:20/18943: 2, last CPU#0:
 #0: ffff8880243c2940 ((wq_completion)wg-kex-wg2#21){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff8880243c2940 ((wq_completion)wg-kex-wg2#21){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff8880243c2940 ((wq_completion)wg-kex-wg2#21){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #0: ffff8880243c2940 ((wq_completion)wg-kex-wg2#21){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
 #1: ffffc90004db7c40 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffc90004db7c40 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffc90004db7c40 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #1: ffffc90004db7c40 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
locks held by kworker/0:12/24275: 2, on CPU#0:
 #0: ffff88801c06a140 ((wq_completion)events_freezable){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff88801c06a140 ((wq_completion)events_freezable){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff88801c06a140 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #0: ffff88801c06a140 ((wq_completion)events_freezable){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
 #1: ffffc9000365fc40 ((work_completion)(&(&host->detect)->work)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffc9000365fc40 ((work_completion)(&(&host->detect)->work)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffc9000365fc40 ((work_completion)(&(&host->detect)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #1: ffffc9000365fc40 ((work_completion)(&(&host->detect)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
locks held by kworker/0:13/24276: 5, on CPU#0:
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
 #1: ffffc9000366fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffc9000366fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffc9000366fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #1: ffffc9000366fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
 #2: ffff88802a7951d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
 #2: ffff88802a7951d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4d30 drivers/usb/core/hub.c:5917
 #3: ffff8880a27fe1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
 #3: ffff8880a27fe1d8 (&dev->mutex){....}-{4:4}, at: usb_disconnect+0xfc/0x9a0 drivers/usb/core/hub.c:2346
 #4: ffff8880364451a0 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
 #4: ffff8880364451a0 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1171 [inline]
 #4: ffff8880364451a0 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xb9/0x880 drivers/base/dd.c:1369
locks held by kworker/0:15/24277: 12, on CPU#0:
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #0: ffff888022e91540 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
 #1: ffffc9000367fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffc9000367fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffc9000367fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3361 [inline]
 #1: ffffc9000367fc40 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 kernel/workqueue.c:3479
 #2: ffff88802a9ad1d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
 #2: ffff88802a9ad1d8 (&dev->mutex){....}-{4:4}, at: hub_event+0x184/0x4d30 drivers/usb/core/hub.c:5917
 #3: ffff88807f5d91d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
 #3: ffff88807f5d91d8 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450 drivers/base/dd.c:1073
 #4: ffff888036d391a0 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
 #4: ffff888036d391a0 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450 drivers/base/dd.c:1073
 #5: ffff88802ac38260 (&dev->clientlist_mutex){+.+.}-{4:4}, at: drm_client_register+0x4b/0x200 drivers/gpu/drm/drm_client.c:129
 #6: ffff888038128a70 (&helper->lock){+.+.}-{4:4}, at: drm_fb_helper_initial_config+0x29/0x40 drivers/gpu/drm/drm_fb_helper.c:1807
 #7: ffff888038128890 (&client->modeset_mutex){+.+.}-{4:4}, at: drm_client_modeset_probe+0x42f/0x60c0 drivers/gpu/drm/drm_client_modeset.c:865
 #8: ffff88802ac383f8 (&dev->mode_config.mutex){+.+.}-{4:4}, at: drm_client_modeset_probe+0x44a/0x60c0 drivers/gpu/drm/drm_client_modeset.c:867
 #9: ffffc9000367e6f0 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_helper_probe_single_connector_modes+0x144/0x1880 drivers/gpu/drm/drm_probe_helper.c:570
 #10: ffffc9000367e718 (crtc_ww_class_mutex){+.+.}-{4:4}, at: drm_helper_probe_single_connector_modes+0x144/0x1880 drivers/gpu/drm/drm_probe_helper.c:570
 #11: ffffffff906e8498 (drm_unplug_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:198 [inline]
 #11: ffffffff906e8498 (drm_unplug_srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:305 [inline]
 #11: ffffffff906e8498 (drm_unplug_srcu){.+.+}-{0:0}, at: drm_dev_enter+0x49/0x150 drivers/gpu/drm/drm_drv.c:454
locks held by syz.6.6917/670: 1, on CPU#1:
 #0: ffff88802ac38260 (&dev->clientlist_mutex){+.+.}-{4:4}, at: drm_client_dev_restore+0xb1/0x290 drivers/gpu/drm/drm_client_event.c:113
locks held by syz.8.6918/673: 1, last CPU#0:
 #0: ffff888024943780 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1089 [inline]
 #0: ffff888024943780 (mapping.invalidate_lock){++++}-{4:4}, at: page_cache_ra_order+0x3eb/0xee0 mm/readahead.c:517
locks held by syz.8.6918/674: 1, last CPU#0:
 #0: ffff88802a9171d8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline]
 #0: ffff88802a9171d8 (&dev->mutex){....}-{4:4}, at: usbdev_do_ioctl drivers/usb/core/devio.c:2613 [inline]
 #0: ffff88802a9171d8 (&dev->mutex){....}-{4:4}, at: usbdev_ioctl+0x13f/0x2120 drivers/usb/core/devio.c:2829
locks held by syz.1.6920/679: 1, on CPU#1:
 #0: ffff88807fb19bc0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:562 [inline]
 #0: ffff88807fb19bc0 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x1dd/0x4e0 mm/util.c:579
locks held by syz.1.6920/680: 1, last CPU#1:
 #0: ffff88807fb19bc0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline]
 #0: ffff88807fb19bc0 (&mm->mmap_lock){++++}-{4:4}, at: __mm_populate+0x182/0x390 mm/gup.c:1942

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 32 Comm: khungtaskd Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:123
 nmi_trigger_cpumask_backtrace+0x17d/0x390 lib/nmi_backtrace.c:66
 trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xfd7/0x1030 kernel/hung_task.c:561
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: 1b 8b 02 e9 c3 08 03 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d e3 d5 20 00 fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8fa07ca0 EFLAGS: 00000246
RAX: 0000000001e73cf5 RBX: ffffffff819becb0 RCX: 8000000000000001
RDX: 0000000000000001 RSI: ffffffff8e469aca RDI: ffffffff8c6dde80
RBP: ffffffff8fa07d78 R08: ffff8880b8433a1b R09: 1ffff11017086743
R10: dffffc0000000000 R11: ffffed1017086744 R12: 0000000000000000
R13: 1ffffffff1f51e00 R14: 1ffffffff1f40f9c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888123abf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f139b1eb8c0 CR3: 0000000061e9c000 CR4: 00000000003526f0
DR0: 000000000000a152 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/kernel/process.c:767 [inline]
 default_idle+0x9/0x20 arch/x86/kernel/process.c:768
 default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x2e0/0x540 kernel/sched/idle.c:355
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
 rest_init+0x378/0x3a0 init/main.c:732
 start_kernel+0x392/0x3e0 init/main.c:1190
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x137/0x1b0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x157
 </TASK>

Crashes (442):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/12 04:46 upstream b88c841d1164 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/10/10 23:52 upstream 3857c2fe5449 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/10/08 17:55 upstream 7b63ef2d55f2 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/10/07 07:01 upstream 69f80fef3153 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/10/06 20:54 upstream 69f80fef3153 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in sdio_reset
2026/10/06 04:27 upstream 67f0943b394d f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/10/04 20:19 upstream 6addb4f38557 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/10/04 00:36 upstream a74306e2e676 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/10/03 03:19 upstream ce1e0223d8ad 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in sdio_reset
2026/10/02 17:41 upstream ce1e0223d8ad 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/10/01 09:09 upstream 551c722f4080 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in sdio_reset
2026/08/31 15:21 upstream a23cbb05744b 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/08/26 22:32 upstream 502d45774af0 a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in sdio_reset
2026/08/23 05:53 upstream 66fb95a52111 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sdio_reset
2026/08/17 21:55 upstream 8d3ae59288f1 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in sdio_reset
2026/10/10 00:11 upstream af32da41b032 a8add9cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in sdio_reset
2026/10/12 14:17 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bbf6b99a57b2 745a967f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/12 10:10 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bbf6b99a57b2 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/12 06:41 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bbf6b99a57b2 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/12 02:05 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bbf6b99a57b2 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/11 18:39 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8f0d16174102 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/11 02:08 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 648b08aa37c1 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/10 21:09 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 648b08aa37c1 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/10 18:05 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 648b08aa37c1 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/10 16:12 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 648b08aa37c1 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/10 11:54 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 648b08aa37c1 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/10 10:38 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 648b08aa37c1 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/10 08:40 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 648b08aa37c1 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/10 06:22 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 648b08aa37c1 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/09 22:14 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 648b08aa37c1 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/09 07:00 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 42bcac323cc3 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/08 23:56 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 42bcac323cc3 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/08 13:29 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 42bcac323cc3 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/08 01:56 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 42bcac323cc3 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/07 18:58 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 42bcac323cc3 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/07 11:25 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 42bcac323cc3 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/05 21:04 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 5926a7da8789 af63e995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/05 14:24 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 5926a7da8789 af63e995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/04 22:47 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 639df5d23876 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/04 12:41 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 639df5d23876 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/03 20:13 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 639df5d23876 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/03 16:28 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 639df5d23876 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/03 07:40 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 647f31f34d40 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/02 20:25 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 647f31f34d40 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/02 18:47 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 647f31f34d40 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/02 06:36 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 647f31f34d40 6d32eb1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/02 05:30 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 647f31f34d40 6d32eb1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/01 20:00 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 647f31f34d40 f5cdae2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/01 11:25 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 647f31f34d40 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/01 02:02 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d58dffe9ee2c 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/10/01 00:52 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d58dffe9ee2c 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/09/30 22:19 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d58dffe9ee2c 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
2026/09/18 21:48 linux-next 9d80aa4617b3 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: task hung in sdio_reset
2026/09/09 06:27 linux-next a9d7ced84989 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in sdio_reset
2026/08/16 13:51 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bdab5605259b 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in sdio_reset
* Struck through repros no longer work on HEAD.