[ 19.464469][ T5529] 8021q: adding VLAN 0 to HW filter on device bond0 [ 19.467941][ T5529] eql: remember to turn off Van-Jacobson compression on your slave devices [ 19.526308][ T39] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 19.531920][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller syzkaller login: [ 69.602392][ T24] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.168' (ECDSA) to the list of known hosts. executing program [ 485.958852][ T5980] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=5980 'syz-executor323' [ 486.013447][ T5980] loop0: detected capacity change from 0 to 8192 [ 486.016892][ T5980] ======================================================= [ 486.016892][ T5980] WARNING: The mand mount option has been deprecated and [ 486.016892][ T5980] and is ignored by this kernel. Remove the mand [ 486.016892][ T5980] option from the mount to silence this warning. [ 486.016892][ T5980] ======================================================= [ 486.028945][ T5980] UDF-fs: warning (device loop0): udf_load_vrs: No VRS found [ 486.031550][ T5980] UDF-fs: Scanning with blocksize 512 failed [ 486.033793][ T5980] UDF-fs: warning (device loop0): udf_load_vrs: No VRS found [ 486.035674][ T5980] UDF-fs: Scanning with blocksize 1024 failed [ 486.037696][ T5980] UDF-fs: warning (device loop0): udf_load_vrs: No VRS found [ 486.039643][ T5980] UDF-fs: Scanning with blocksize 2048 failed [ 486.045208][ T5980] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 649.440125][ T28] INFO: task kworker/u4:5:4609 blocked for more than 143 seconds. [ 649.442282][ T28] Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 [ 649.444082][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 649.446291][ T28] task:kworker/u4:5 state:D stack:0 pid:4609 ppid:2 flags:0x00000008 [ 649.448708][ T28] Workqueue: writeback wb_workfn (flush-7:0) [ 649.450362][ T28] Call trace: [ 649.451212][ T28] __switch_to+0x320/0x754 [ 649.452388][ T28] __schedule+0x1130/0x1fd0 [ 649.453537][ T28] schedule+0xc4/0x170 [ 649.454580][ T28] io_schedule+0x8c/0x120 [ 649.455701][ T28] folio_wait_bit_common+0x65c/0xb90 [ 649.457036][ T28] __folio_lock+0x2c/0x3c [ 649.458191][ T28] write_cache_pages+0x434/0xfac [ 649.459479][ T28] mpage_writepages+0x10c/0x1d0 [ 649.460836][ T28] udf_writepages+0xb4/0xdc [ 649.462027][ T28] do_writepages+0x2e8/0x570 [ 649.463238][ T28] __writeback_single_inode+0x228/0x1ec8 [ 649.464652][ T28] writeback_sb_inodes+0x82c/0x13dc [ 649.466086][ T28] __writeback_inodes_wb+0xec/0x234 [ 649.467404][ T28] wb_writeback+0x50c/0x1580 [ 649.468573][ T28] wb_workfn+0xe18/0x11b8 [ 649.469626][ T28] process_one_work+0x868/0x16f4 [ 649.471007][ T28] worker_thread+0x8e0/0xfe8 [ 649.472149][ T28] kthread+0x24c/0x2d4 [ 649.473201][ T28] ret_from_fork+0x10/0x20 [ 649.474350][ T28] INFO: task syz-executor323:5979 blocked for more than 143 seconds. [ 649.476419][ T28] Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 [ 649.478342][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 649.480688][ T28] task:syz-executor323 state:D stack:0 pid:5979 ppid:5978 flags:0x00000000 [ 649.483071][ T28] Call trace: [ 649.483925][ T28] __switch_to+0x320/0x754 [ 649.485107][ T28] __schedule+0x1130/0x1fd0 [ 649.486318][ T28] schedule+0xc4/0x170 [ 649.487378][ T28] schedule_preempt_disabled+0x18/0x2c [ 649.488789][ T28] rwsem_down_read_slowpath+0x534/0x858 [ 649.490362][ T28] __down_read_common+0x68/0x2d8 [ 649.491654][ T28] down_read+0x68/0x78 [ 649.492722][ T28] exit_mm+0x6c/0x214 [ 649.493786][ T28] do_exit+0x47c/0x1a30 [ 649.494861][ T28] do_group_exit+0x194/0x22c [ 649.496063][ T28] __wake_up_parent+0x0/0x60 [ 649.497235][ T28] invoke_syscall+0x98/0x2c0 [ 649.498506][ T28] el0_svc_common+0x138/0x258 [ 649.499731][ T28] do_el0_svc+0x64/0x198 [ 649.500960][ T28] el0_svc+0x58/0x168 [ 649.502002][ T28] el0t_64_sync_handler+0x84/0xf0 [ 649.503269][ T28] el0t_64_sync+0x190/0x194 [ 649.504459][ T28] INFO: task syz-executor323:5980 blocked for more than 143 seconds. [ 649.506590][ T28] Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 [ 649.508391][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 649.510778][ T28] task:syz-executor323 state:D stack:0 pid:5980 ppid:5978 flags:0x00000009 [ 649.513237][ T28] Call trace: [ 649.514081][ T28] __switch_to+0x320/0x754 [ 649.515207][ T28] __schedule+0x1130/0x1fd0 [ 649.516420][ T28] schedule+0xc4/0x170 [ 649.517500][ T28] io_schedule+0x8c/0x120 [ 649.518610][ T28] folio_wait_bit_common+0x65c/0xb90 [ 649.520067][ T28] __folio_lock+0x2c/0x3c [ 649.521266][ T28] write_cache_pages+0x434/0xfac [ 649.522564][ T28] mpage_writepages+0x10c/0x1d0 [ 649.523896][ T28] udf_writepages+0xb4/0xdc [ 649.525084][ T28] do_writepages+0x2e8/0x570 [ 649.526292][ T28] filemap_fdatawrite_wbc+0x124/0x174 [ 649.527697][ T28] file_write_and_wait_range+0x1bc/0x2ac [ 649.529169][ T28] __generic_file_fsync+0x7c/0x19c [ 649.530646][ T28] generic_file_fsync+0x7c/0xf8 [ 649.531910][ T28] vfs_fsync_range+0x168/0x188 [ 649.533206][ T28] udf_file_write_iter+0x440/0x568 [ 649.534538][ T28] vfs_write+0x610/0x914 [ 649.535669][ T28] ksys_write+0x15c/0x26c [ 649.536808][ T28] __arm64_sys_write+0x7c/0x90 [ 649.538057][ T28] invoke_syscall+0x98/0x2c0 [ 649.539284][ T28] el0_svc_common+0x138/0x258 [ 649.540632][ T28] do_el0_svc+0x64/0x198 [ 649.541742][ T28] el0_svc+0x58/0x168 [ 649.542771][ T28] el0t_64_sync_handler+0x84/0xf0 [ 649.544081][ T28] el0t_64_sync+0x190/0x194 [ 649.545294][ T28] INFO: task syz-executor323:5982 blocked for more than 143 seconds. [ 649.547474][ T28] Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 [ 649.549270][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 649.551708][ T28] task:syz-executor323 state:D stack:0 pid:5982 ppid:5978 flags:0x00000001 [ 649.554177][ T28] Call trace: [ 649.555042][ T28] __switch_to+0x320/0x754 [ 649.556188][ T28] __schedule+0x1130/0x1fd0 [ 649.557364][ T28] schedule+0xc4/0x170 [ 649.558433][ T28] io_schedule+0x8c/0x120 [ 649.559544][ T28] folio_wait_bit_common+0x65c/0xb90 [ 649.561122][ T28] folio_wait_bit+0x30/0x40 [ 649.562346][ T28] folio_wait_writeback+0x9c/0x100 [ 649.563681][ T28] migrate_pages+0x2ce0/0x5a58 [ 649.564943][ T28] __arm64_sys_mbind+0x7b4/0x9f4 [ 649.566210][ T28] invoke_syscall+0x98/0x2c0 [ 649.567391][ T28] el0_svc_common+0x138/0x258 [ 649.568613][ T28] do_el0_svc+0x64/0x198 [ 649.569748][ T28] el0_svc+0x58/0x168 [ 649.570971][ T28] el0t_64_sync_handler+0x84/0xf0 [ 649.572275][ T28] el0t_64_sync+0x190/0x194 [ 649.573407][ T28] [ 649.573407][ T28] Showing all locks held in the system: [ 649.575268][ T28] 1 lock held by rcu_tasks_kthre/12: [ 649.576574][ T28] #0: ffff800015eb7c90 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 649.579229][ T28] 1 lock held by rcu_tasks_trace/13: [ 649.580669][ T28] #0: ffff800015eb8490 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 [ 649.583510][ T28] 1 lock held by khungtaskd/28: [ 649.584779][ T28] #0: ffff800015eb7ac0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 [ 649.587353][ T28] 3 locks held by kworker/u4:5/4609: [ 649.588779][ T28] #0: ffff0000c0e3d938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x664/0x16f4 [ 649.591738][ T28] #1: ffff800023087c20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x16f4 [ 649.594887][ T28] #2: ffff0000cd3f00e0 (&type->s_umount_key#41){.+.+}-{3:3}, at: trylock_super+0x28/0xf8 [ 649.597508][ T28] 2 locks held by getty/5627: [ 649.598732][ T28] #0: ffff0000ce47e098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c [ 649.601293][ T28] #1: ffff80001aa102f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 [ 649.603954][ T28] 1 lock held by syz-executor323/5979: [ 649.605366][ T28] #0: ffff0000c5743f88 (&mm->mmap_lock){++++}-{3:3}, at: exit_mm+0x6c/0x214 [ 649.607577][ T28] 2 locks held by syz-executor323/5980: [ 649.608912][ T28] #0: ffff0000dab3b268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xd8/0x104 [ 649.611412][ T28] #1: ffff0000cd3f0460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x244/0x914 [ 649.613689][ T28] 1 lock held by syz-executor323/5982: [ 649.614997][ T28] #0: ffff0000c5743f88 (&mm->mmap_lock){++++}-{3:3}, at: __arm64_sys_mbind+0x5b0/0x9f4 [ 649.617654][ T28] [ 649.618209][ T28] ============================================= [ 649.618209][ T28] [ 649.620402][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 649.622059][ T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 [ 649.624370][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 649.626910][ T28] Call trace: [ 649.627745][ T28] dump_backtrace+0x1c8/0x1f4 [ 649.628980][ T28] show_stack+0x2c/0x3c [ 649.630066][ T28] dump_stack_lvl+0xd0/0x124 [ 649.631226][ T28] dump_stack+0x1c/0x28 [ 649.632327][ T28] panic+0x2f0/0x7c8 [ 649.633343][ T28] hung_task_panic+0x0/0x2c [ 649.634554][ T28] kthread+0x24c/0x2d4 [ 649.635573][ T28] ret_from_fork+0x10/0x20 [ 649.636671][ T28] SMP: stopping secondary CPUs [ 649.637883][ T28] Kernel Offset: disabled [ 649.638986][ T28] CPU features: 0x000000,20700402,32017203 [ 649.640538][ T28] Memory Limit: none [ 649.963958][ T28] Rebooting in 86400 seconds..