Warning: Permanently added '10.128.10.7' (ED25519) to the list of known hosts. executing program [ 120.910042][ T4050] nbd0: detected capacity change from 0 to 4294967296 executing program executing program [ 121.074203][ T144] block nbd0: Receive control failed (result -104) executing program [ 121.076824][ T4050] block nbd0: shutting down sockets [ 121.081962][ C0] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.084979][ C0] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.087351][ T227] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.090816][ T227] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.093079][ T4052] ldm_validate_partition_table(): Disk read failed. [ 121.094899][ T4052] Dev nbd0: unable to read RDB block 0 [ 121.096341][ T4052] nbd0: unable to read partition table [ 121.097848][ T4052] nbd0: partition table beyond EOD, truncated [ 121.105558][ T4054] nbd0: detected capacity change from 0 to 4294967296 [ 121.158752][ T4054] block nbd0: Device being setup by another task [ 121.160955][ T227] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.163867][ T227] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.166121][ T149] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.169201][ T149] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.171496][ T227] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.174387][ T227] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.176641][ T149] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.179744][ T149] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.182015][ T227] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.184921][ T227] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.187163][ T149] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.190219][ T149] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.192491][ T227] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.195392][ T227] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.197641][ T149] blk_update_request: I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 121.200764][ T149] Buffer I/O error on dev nbd0, logical block 0, async page read [ 121.202900][ T4052] ldm_validate_partition_table(): Disk read failed. [ 121.205221][ T4052] Dev nbd0: unable to read RDB block 0 [ 121.207278][ T4052] nbd0: unable to read partition table [ 121.213135][ T4052] ldm_validate_partition_table(): Disk read failed. [ 121.215448][ T4052] Dev nbd0: unable to read RDB block 0 [ 121.217437][ T4052] nbd0: unable to read partition table [ 121.220923][ T4057] ldm_validate_partition_table(): Disk read failed. [ 121.223134][ T4057] Dev nbd0: unable to read RDB block 0 [ 121.225095][ T4057] nbd0: unable to read partition table [ 121.308119][ T4057] block nbd0: Device being setup by another task [ 121.311206][ T4052] ldm_validate_partition_table(): Disk read failed. [ 121.313454][ T4052] Dev nbd0: unable to read RDB block 0 [ 121.315426][ T4052] nbd0: unable to read partition table [ 121.321003][ T4052] ldm_validate_partition_table(): Disk read failed. [ 121.323282][ T4052] Dev nbd0: unable to read RDB block 0 [ 121.325268][ T4052] nbd0: unable to read partition table [ 121.369778][ T4060] nbd0: detected capacity change from 0 to 4294967296 [ 121.533785][ T144] block nbd0: Receive control failed (result -104) [ 151.568104][ T149] block nbd0: Possible stuck request 00000000e6117efe: control (read@0,4096B). Runtime 30 seconds [ 181.446561][ T3645] udevd[3645]: worker [4052] /devices/virtual/block/nbd0 is taking a long time [ 181.648130][ T149] block nbd0: Possible stuck request 00000000e6117efe: control (read@0,4096B). Runtime 60 seconds [ 211.728030][ T149] block nbd0: Possible stuck request 00000000e6117efe: control (read@0,4096B). Runtime 90 seconds [ 241.808074][ T149] block nbd0: Possible stuck request 00000000e6117efe: control (read@0,4096B). Runtime 120 seconds [ 271.888074][ T149] block nbd0: Possible stuck request 00000000e6117efe: control (read@0,4096B). Runtime 150 seconds [ 284.688062][ T27] INFO: task udevd:4052 blocked for more than 143 seconds. [ 284.690080][ T27] Not tainted 5.15.184-syzkaller #0 [ 284.691568][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 284.693856][ T27] task:udevd state:D stack: 0 pid: 4052 ppid: 3645 flags:0x00000004 [ 284.696381][ T27] Call trace: [ 284.697244][ T27] __switch_to+0x2f4/0x558 [ 284.698534][ T27] __schedule+0xe00/0x1c0c [ 284.699748][ T27] schedule+0x11c/0x1c8 [ 284.700891][ T27] io_schedule+0x84/0x160 [ 284.702044][ T27] wait_on_page_bit_common+0x61c/0xa74 [ 284.703504][ T27] do_read_cache_page+0x748/0x8f8 [ 284.704859][ T27] read_cache_page+0x68/0x88 [ 284.706088][ T27] read_part_sector+0xe8/0x4c4 [ 284.707325][ T27] adfspart_check_ICS+0xbc/0x560 [ 284.708719][ T27] bdev_disk_changed+0x7fc/0x1378 [ 284.710070][ T27] blkdev_get_whole+0x2a4/0x344 [ 284.711354][ T27] blkdev_get_by_dev+0x224/0x874 [ 284.712642][ T27] blkdev_open+0x108/0x27c [ 284.713794][ T27] do_dentry_open+0x760/0xebc [ 284.715053][ T27] vfs_open+0x7c/0x90 [ 284.716095][ T27] path_openat+0x1f80/0x26e4 [ 284.717335][ T27] do_filp_open+0x164/0x330 [ 284.718601][ T27] do_sys_openat2+0x128/0x3d8 [ 284.719812][ T27] __arm64_sys_openat+0x120/0x154 [ 284.721167][ T27] invoke_syscall+0x98/0x2b8 [ 284.722405][ T27] el0_svc_common+0x138/0x258 [ 284.723625][ T27] do_el0_svc+0x58/0x14c [ 284.724763][ T27] el0_svc+0x78/0x1e0 [ 284.725835][ T27] el0t_64_sync_handler+0xcc/0xe4 [ 284.727146][ T27] el0t_64_sync+0x1a0/0x1a4 [ 284.728421][ T27] INFO: task syz-executor153:4060 blocked for more than 143 seconds. [ 284.730549][ T27] Not tainted 5.15.184-syzkaller #0 [ 284.732090][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 284.734418][ T27] task:syz-executor153 state:D stack: 0 pid: 4060 ppid: 4048 flags:0x0000000d [ 284.736860][ T27] Call trace: [ 284.737727][ T27] __switch_to+0x2f4/0x558 [ 284.738994][ T27] __schedule+0xe00/0x1c0c [ 284.740121][ T27] schedule+0x11c/0x1c8 [ 284.741286][ T27] schedule_preempt_disabled+0x18/0x2c [ 284.742681][ T27] __mutex_lock_common+0xa9c/0x1edc [ 284.744066][ T27] mutex_lock_nested+0xac/0x11c [ 284.745367][ T27] blkdev_put+0xdc/0x6ac [ 284.746528][ T27] blkdev_close+0x74/0xb0 [ 284.747652][ T27] __fput+0x1c0/0x7f8 [ 284.748774][ T27] ____fput+0x20/0x30 [ 284.749835][ T27] task_work_run+0x12c/0x1e0 [ 284.751060][ T27] do_notify_resume+0x24b4/0x3128 [ 284.752424][ T27] el0_svc+0xf0/0x1e0 [ 284.753483][ T27] el0t_64_sync_handler+0xcc/0xe4 [ 284.754777][ T27] el0t_64_sync+0x1a0/0x1a4 [ 284.755971][ T27] [ 284.755971][ T27] Showing all locks held in the system: [ 284.758036][ T27] 1 lock held by khungtaskd/27: [ 284.759322][ T27] #0: ffff8000143211e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 284.761834][ T27] 2 locks held by getty/3795: [ 284.763082][ T27] #0: ffff0000d355d098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 [ 284.765659][ T27] #1: ffff80001bc5b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2f0/0xf6c [ 284.768414][ T27] 1 lock held by udevd/4052: [ 284.769639][ T27] #0: ffff0000cc4f9918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x120/0x874 [ 284.772315][ T27] 1 lock held by syz-executor153/4060: [ 284.773770][ T27] #0: ffff0000cc4f9918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xdc/0x6ac [ 284.776277][ T27] [ 284.776886][ T27] ============================================= [ 284.776886][ T27] [ 284.779210][ T27] Kernel panic - not syncing: hung_task: blocked tasks [ 284.781021][ T27] CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.184-syzkaller #0 [ 284.783106][ T27] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 284.785781][ T27] Call trace: [ 284.786635][ T27] dump_backtrace+0x0/0x43c [ 284.787819][ T27] show_stack+0x2c/0x3c [ 284.788922][ T27] __dump_stack+0x30/0x40 [ 284.790100][ T27] dump_stack_lvl+0xf8/0x160 [ 284.791382][ T27] dump_stack+0x1c/0x5c [ 284.792496][ T27] panic+0x2e4/0x854 [ 284.793551][ T27] hung_task_panic+0x0/0x2c [ 284.794750][ T27] kthread+0x374/0x454 [ 284.795848][ T27] ret_from_fork+0x10/0x20 [ 284.797000][ T27] SMP: stopping secondary CPUs [ 284.798341][ T27] Kernel Offset: disabled [ 284.799531][ T27] CPU features: 0x8,000081c1,21302e40 [ 284.800988][ T27] Memory Limit: none [ 285.123279][ T27] Rebooting in 86400 seconds..