Warning: Permanently added '10.128.0.226' (ED25519) to the list of known hosts. executing program [ 463.907815][ T6134] nbd0: detected capacity change from 0 to 18 [ 468.871398][ T6134] block nbd0: shutting down sockets [ 468.873699][ C0] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.875785][ C0] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.877895][ T24] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.880192][ T24] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.882262][ T24] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.884339][ T24] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.886523][ T24] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.888627][ T24] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.890555][ T24] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.892570][ T24] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.894420][ T24] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.896651][ T24] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.898484][ T24] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.900558][ T24] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.902619][ T54] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.904704][ T54] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.906595][ T6131] ldm_validate_partition_table(): Disk read failed. [ 468.908482][ T54] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.910720][ T54] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.912685][ T24] I/O error, dev nbd0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 [ 468.914768][ T24] Buffer I/O error on dev nbd0, logical block 0, async page read [ 468.916786][ T6131] Dev nbd0: unable to read RDB block 0 [ 468.918325][ T6131] nbd0: unable to read partition table [ 468.919632][ T6131] nbd0: partition table beyond EOD, truncated [ 468.923149][ T6131] ldm_validate_partition_table(): Disk read failed. executing program [ 468.924957][ T6131] Dev nbd0: unable to read RDB block 0 [ 468.927146][ T6131] nbd0: unable to read partition table [ 468.928446][ T6131] nbd0: partition table beyond EOD, truncated [ 468.931363][ T6138] ldm_validate_partition_table(): Disk read failed. [ 468.933235][ T6138] Dev nbd0: unable to read RDB block 0 [ 468.934768][ T6138] nbd0: unable to read partition table [ 468.936218][ T6138] nbd0: partition table beyond EOD, truncated [ 468.938587][ T6139] ldm_validate_partition_table(): Disk read failed. [ 468.940462][ T6139] Dev nbd0: unable to read RDB block 0 [ 468.942001][ T6139] nbd0: unable to read partition table [ 468.943345][ T6139] nbd0: partition table beyond EOD, truncated executing program [ 468.996944][ T6141] nbd0: detected capacity change from 0 to 18 [ 469.158136][ T5672] block nbd0: Receive control failed (result -104) [ 499.036552][ T54] block nbd0: Possible stuck request 00000000189d43ad: control (read@0,4096B). Runtime 30 seconds [ 529.066145][ T5715] udevd[5715]: worker [6131] /devices/virtual/block/nbd0 is taking a long time [ 529.116173][ T54] block nbd0: Possible stuck request 00000000189d43ad: control (read@0,4096B). Runtime 60 seconds [ 559.196124][ T54] block nbd0: Possible stuck request 00000000189d43ad: control (read@0,4096B). Runtime 90 seconds [ 589.276164][ T54] block nbd0: Possible stuck request 00000000189d43ad: control (read@0,4096B). Runtime 120 seconds [ 619.356208][ T54] block nbd0: Possible stuck request 00000000189d43ad: control (read@0,4096B). Runtime 150 seconds [ 649.206088][ T5715] udevd[5715]: worker [6131] /devices/virtual/block/nbd0 timeout; kill it [ 649.208046][ T5715] udevd[5715]: seq 10685 '/devices/virtual/block/nbd0' killed [ 649.436254][ T54] block nbd0: Possible stuck request 00000000189d43ad: control (read@0,4096B). Runtime 180 seconds [ 679.516210][ T54] block nbd0: Possible stuck request 00000000189d43ad: control (read@0,4096B). Runtime 210 seconds [ 709.596284][ T54] block nbd0: Possible stuck request 00000000189d43ad: control (read@0,4096B). Runtime 240 seconds [ 714.716160][ T29] INFO: task syz-executor251:6140 blocked for more than 143 seconds. [ 714.717982][ T29] Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 [ 714.719498][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 714.721341][ T29] task:syz-executor251 state:D stack:0 pid:6140 tgid:6140 ppid:6130 flags:0x00000005 [ 714.723545][ T29] Call trace: [ 714.724270][ T29] __switch_to+0x314/0x560 [ 714.725230][ T29] __schedule+0x1354/0x2360 [ 714.726404][ T29] schedule+0xb8/0x19c [ 714.727317][ T29] schedule_preempt_disabled+0x18/0x2c [ 714.728561][ T29] __mutex_lock_common+0xbd8/0x21a0 [ 714.729712][ T29] mutex_lock_nested+0x2c/0x38 [ 714.730755][ T29] blkdev_put+0xec/0x740 [ 714.731696][ T29] bdev_release+0x5c/0x78 [ 714.732645][ T29] blkdev_release+0x40/0x54 [ 714.733641][ T29] __fput+0x308/0x8e4 [ 714.734594][ T29] __fput_sync+0x60/0x9c [ 714.735669][ T29] __arm64_sys_close+0x150/0x1e0 [ 714.736795][ T29] invoke_syscall+0x98/0x2b8 [ 714.737866][ T29] el0_svc_common+0x130/0x23c [ 714.738930][ T29] do_el0_svc+0x48/0x58 [ 714.739843][ T29] el0_svc+0x54/0x158 [ 714.740739][ T29] el0t_64_sync_handler+0x84/0xfc [ 714.741835][ T29] el0t_64_sync+0x190/0x194 [ 714.742825][ T29] [ 714.742825][ T29] Showing all locks held in the system: [ 714.744663][ T29] 1 lock held by khungtaskd/29: [ 714.745689][ T29] #0: ffff80008e6c48c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 714.747880][ T29] 2 locks held by getty/5862: [ 714.748884][ T29] #0: ffff0000d21e30a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 714.750971][ T29] #1: ffff800094e802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 [ 714.753268][ T29] 1 lock held by udevd/6131: [ 714.754354][ T29] #0: ffff0000c9eb74c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x114/0x55c [ 714.756584][ T29] 1 lock held by syz-executor251/6140: [ 714.757789][ T29] #0: ffff0000c9eb74c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xec/0x740 [ 714.759856][ T29] [ 714.760379][ T29] ============================================= [ 714.760379][ T29] [ 714.762285][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 714.763887][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc8-syzkaller-g0802e17d9aca #0 [ 714.765939][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 714.768233][ T29] Call trace: [ 714.769000][ T29] dump_backtrace+0x1b8/0x1e4 [ 714.770059][ T29] show_stack+0x2c/0x3c [ 714.770980][ T29] dump_stack_lvl+0xd0/0x124 [ 714.772015][ T29] dump_stack+0x1c/0x28 [ 714.772964][ T29] panic+0x30c/0x88c [ 714.773836][ T29] hung_task_panic+0x0/0x2c [ 714.774899][ T29] kthread+0x288/0x310 [ 714.775820][ T29] ret_from_fork+0x10/0x20 [ 714.776826][ T29] SMP: stopping secondary CPUs [ 714.777939][ T29] Kernel Offset: disabled [ 714.778989][ T29] CPU features: 0x0,00000020,7002004a,21017203 [ 714.780424][ T29] Memory Limit: none [ 715.115042][ T29] Rebooting in 86400 seconds..