Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 596.051280][ T1133] INFO: task syz-executor808:7033 blocked for more than 143 seconds. [ 596.051303][ T1133] Not tainted 5.7.0-rc2-syzkaller #0 [ 596.051309][ T1133] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 596.051317][ T1133] syz-executor808 D28488 7033 7031 0x20020004 [ 596.051341][ T1133] Call Trace: [ 596.051519][ T1133] ? __schedule+0x937/0x1ff0 [ 596.051544][ T1133] ? __sched_text_start+0x8/0x8 [ 596.051570][ T1133] schedule+0xd0/0x2a0 [ 596.051591][ T1133] schedule_preempt_disabled+0xf/0x20 [ 596.051604][ T1133] __mutex_lock+0x7ab/0x13c0 [ 596.051656][ T1133] ? fb_open+0xd3/0x430 [ 596.051675][ T1133] ? mutex_trylock+0x2c0/0x2c0 [ 596.051694][ T1133] ? __mutex_unlock_slowpath+0xe2/0x660 [ 596.051735][ T1133] ? chrdev_open+0xc4/0x5c0 [ 596.051787][ T1133] ? lock_downgrade+0x840/0x840 [ 596.051810][ T1133] ? fb_open+0xd3/0x430 [ 596.051822][ T1133] fb_open+0xd3/0x430 [ 596.051838][ T1133] ? get_fb_info.part.0+0x80/0x80 [ 596.051852][ T1133] chrdev_open+0x219/0x5c0 [ 596.051868][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.051906][ T1133] ? security_file_open+0x84/0x410 [ 596.051925][ T1133] do_dentry_open+0x4ba/0x1290 [ 596.051941][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.051991][ T1133] ? security_inode_permission+0xc4/0xf0 [ 596.052005][ T1133] ? chown_common+0x550/0x550 [ 596.052039][ T1133] ? inode_permission+0xab/0x500 [ 596.052061][ T1133] path_openat+0x1e59/0x27d0 [ 596.052087][ T1133] ? path_lookupat.isra.0+0x530/0x530 [ 596.052118][ T1133] do_filp_open+0x192/0x260 [ 596.052134][ T1133] ? may_open_dev+0xf0/0xf0 [ 596.052157][ T1133] ? do_raw_spin_lock+0x129/0x2e0 [ 596.052183][ T1133] ? _raw_spin_unlock+0x24/0x40 [ 596.052203][ T1133] ? __alloc_fd+0x46d/0x600 [ 596.052226][ T1133] do_sys_openat2+0x585/0x7d0 [ 596.052244][ T1133] ? file_open_root+0x400/0x400 [ 596.052272][ T1133] do_sys_open+0xc3/0x140 [ 596.052286][ T1133] ? filp_open+0x70/0x70 [ 596.052329][ T1133] ? fpregs_mark_activate+0x320/0x320 [ 596.052365][ T1133] ? trace_hardirqs_off_caller+0x55/0x230 [ 596.052393][ T1133] do_fast_syscall_32+0x270/0xe90 [ 596.052430][ T1133] entry_SYSENTER_compat+0x70/0x7f [ 596.052459][ T1133] INFO: task syz-executor808:7034 blocked for more than 143 seconds. [ 596.052468][ T1133] Not tainted 5.7.0-rc2-syzkaller #0 [ 596.052474][ T1133] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 596.052480][ T1133] syz-executor808 D28488 7034 7030 0x20020004 [ 596.052502][ T1133] Call Trace: [ 596.052522][ T1133] ? __schedule+0x937/0x1ff0 [ 596.052545][ T1133] ? __sched_text_start+0x8/0x8 [ 596.052572][ T1133] schedule+0xd0/0x2a0 [ 596.052592][ T1133] schedule_preempt_disabled+0xf/0x20 [ 596.052604][ T1133] __mutex_lock+0x7ab/0x13c0 [ 596.052621][ T1133] ? fb_open+0xd3/0x430 [ 596.052639][ T1133] ? mutex_trylock+0x2c0/0x2c0 [ 596.052657][ T1133] ? __mutex_unlock_slowpath+0xe2/0x660 [ 596.052670][ T1133] ? chrdev_open+0xc4/0x5c0 [ 596.052691][ T1133] ? lock_downgrade+0x840/0x840 [ 596.052713][ T1133] ? fb_open+0xd3/0x430 [ 596.052725][ T1133] fb_open+0xd3/0x430 [ 596.052741][ T1133] ? get_fb_info.part.0+0x80/0x80 [ 596.052755][ T1133] chrdev_open+0x219/0x5c0 [ 596.052771][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.052794][ T1133] ? security_file_open+0x84/0x410 [ 596.052811][ T1133] do_dentry_open+0x4ba/0x1290 [ 596.052828][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.052847][ T1133] ? security_inode_permission+0xc4/0xf0 [ 596.052860][ T1133] ? chown_common+0x550/0x550 [ 596.052877][ T1133] ? inode_permission+0xab/0x500 [ 596.052899][ T1133] path_openat+0x1e59/0x27d0 [ 596.052924][ T1133] ? path_lookupat.isra.0+0x530/0x530 [ 596.052954][ T1133] do_filp_open+0x192/0x260 [ 596.052970][ T1133] ? may_open_dev+0xf0/0xf0 [ 596.052992][ T1133] ? do_raw_spin_lock+0x129/0x2e0 [ 596.053018][ T1133] ? _raw_spin_unlock+0x24/0x40 [ 596.053032][ T1133] ? __alloc_fd+0x46d/0x600 [ 596.053056][ T1133] do_sys_openat2+0x585/0x7d0 [ 596.053073][ T1133] ? file_open_root+0x400/0x400 [ 596.053100][ T1133] do_sys_open+0xc3/0x140 [ 596.053115][ T1133] ? filp_open+0x70/0x70 [ 596.053135][ T1133] ? fpregs_mark_activate+0x320/0x320 [ 596.053151][ T1133] ? trace_hardirqs_off_caller+0x55/0x230 [ 596.053174][ T1133] do_fast_syscall_32+0x270/0xe90 [ 596.053194][ T1133] entry_SYSENTER_compat+0x70/0x7f [ 596.053221][ T1133] INFO: task syz-executor808:7035 blocked for more than 143 seconds. [ 596.053229][ T1133] Not tainted 5.7.0-rc2-syzkaller #0 [ 596.053235][ T1133] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 596.053241][ T1133] syz-executor808 D27840 7035 7027 0x20020004 [ 596.053261][ T1133] Call Trace: [ 596.053281][ T1133] ? __schedule+0x937/0x1ff0 [ 596.053304][ T1133] ? __sched_text_start+0x8/0x8 [ 596.053330][ T1133] schedule+0xd0/0x2a0 [ 596.053350][ T1133] schedule_preempt_disabled+0xf/0x20 [ 596.053362][ T1133] __mutex_lock+0x7ab/0x13c0 [ 596.053378][ T1133] ? fb_open+0xd3/0x430 [ 596.053397][ T1133] ? mutex_trylock+0x2c0/0x2c0 [ 596.053415][ T1133] ? __mutex_unlock_slowpath+0xe2/0x660 [ 596.053428][ T1133] ? chrdev_open+0xc4/0x5c0 [ 596.053448][ T1133] ? lock_downgrade+0x840/0x840 [ 596.053471][ T1133] ? fb_open+0xd3/0x430 [ 596.053482][ T1133] fb_open+0xd3/0x430 [ 596.053499][ T1133] ? get_fb_info.part.0+0x80/0x80 [ 596.053512][ T1133] chrdev_open+0x219/0x5c0 [ 596.053528][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.053546][ T1133] ? security_file_open+0x84/0x410 [ 596.053563][ T1133] do_dentry_open+0x4ba/0x1290 [ 596.053579][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.053599][ T1133] ? security_inode_permission+0xc4/0xf0 [ 596.053612][ T1133] ? chown_common+0x550/0x550 [ 596.053629][ T1133] ? inode_permission+0xab/0x500 [ 596.053650][ T1133] path_openat+0x1e59/0x27d0 [ 596.053675][ T1133] ? path_lookupat.isra.0+0x530/0x530 [ 596.053706][ T1133] do_filp_open+0x192/0x260 [ 596.053720][ T1133] ? may_open_dev+0xf0/0xf0 [ 596.053743][ T1133] ? do_raw_spin_lock+0x129/0x2e0 [ 596.053769][ T1133] ? _raw_spin_unlock+0x24/0x40 [ 596.053791][ T1133] ? __alloc_fd+0x46d/0x600 [ 596.053815][ T1133] do_sys_openat2+0x585/0x7d0 [ 596.053832][ T1133] ? file_open_root+0x400/0x400 [ 596.053860][ T1133] do_sys_open+0xc3/0x140 [ 596.053874][ T1133] ? filp_open+0x70/0x70 [ 596.053894][ T1133] ? fpregs_mark_activate+0x320/0x320 [ 596.053910][ T1133] ? trace_hardirqs_off_caller+0x55/0x230 [ 596.053932][ T1133] do_fast_syscall_32+0x270/0xe90 [ 596.053953][ T1133] entry_SYSENTER_compat+0x70/0x7f [ 596.053980][ T1133] INFO: task syz-executor808:7036 blocked for more than 143 seconds. [ 596.053988][ T1133] Not tainted 5.7.0-rc2-syzkaller #0 [ 596.053994][ T1133] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 596.054000][ T1133] syz-executor808 D28288 7036 7032 0x20020004 [ 596.054022][ T1133] Call Trace: [ 596.054042][ T1133] ? __schedule+0x937/0x1ff0 [ 596.054065][ T1133] ? __sched_text_start+0x8/0x8 [ 596.054091][ T1133] schedule+0xd0/0x2a0 [ 596.054111][ T1133] schedule_preempt_disabled+0xf/0x20 [ 596.054123][ T1133] __mutex_lock+0x7ab/0x13c0 [ 596.054139][ T1133] ? fb_open+0xd3/0x430 [ 596.054158][ T1133] ? mutex_trylock+0x2c0/0x2c0 [ 596.054190][ T1133] ? __mutex_unlock_slowpath+0xe2/0x660 [ 596.054203][ T1133] ? chrdev_open+0xc4/0x5c0 [ 596.054223][ T1133] ? lock_downgrade+0x840/0x840 [ 596.054246][ T1133] ? fb_open+0xd3/0x430 [ 596.054258][ T1133] fb_open+0xd3/0x430 [ 596.054274][ T1133] ? get_fb_info.part.0+0x80/0x80 [ 596.054287][ T1133] chrdev_open+0x219/0x5c0 [ 596.054303][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.054321][ T1133] ? security_file_open+0x84/0x410 [ 596.054339][ T1133] do_dentry_open+0x4ba/0x1290 [ 596.054355][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.054374][ T1133] ? security_inode_permission+0xc4/0xf0 [ 596.054388][ T1133] ? chown_common+0x550/0x550 [ 596.054405][ T1133] ? inode_permission+0xab/0x500 [ 596.054426][ T1133] path_openat+0x1e59/0x27d0 [ 596.054451][ T1133] ? path_lookupat.isra.0+0x530/0x530 [ 596.054481][ T1133] do_filp_open+0x192/0x260 [ 596.054497][ T1133] ? may_open_dev+0xf0/0xf0 [ 596.054519][ T1133] ? do_raw_spin_lock+0x129/0x2e0 [ 596.054545][ T1133] ? _raw_spin_unlock+0x24/0x40 [ 596.054559][ T1133] ? __alloc_fd+0x46d/0x600 [ 596.054582][ T1133] do_sys_openat2+0x585/0x7d0 [ 596.054600][ T1133] ? file_open_root+0x400/0x400 [ 596.054627][ T1133] do_sys_open+0xc3/0x140 [ 596.054641][ T1133] ? filp_open+0x70/0x70 [ 596.054662][ T1133] ? fpregs_mark_activate+0x320/0x320 [ 596.054677][ T1133] ? trace_hardirqs_off_caller+0x55/0x230 [ 596.054700][ T1133] do_fast_syscall_32+0x270/0xe90 [ 596.054721][ T1133] entry_SYSENTER_compat+0x70/0x7f [ 596.054748][ T1133] INFO: task syz-executor808:7037 blocked for more than 143 seconds. [ 596.054756][ T1133] Not tainted 5.7.0-rc2-syzkaller #0 [ 596.054762][ T1133] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 596.054768][ T1133] syz-executor808 D28208 7037 7029 0x20020004 [ 596.054795][ T1133] Call Trace: [ 596.054815][ T1133] ? __schedule+0x937/0x1ff0 [ 596.054838][ T1133] ? __sched_text_start+0x8/0x8 [ 596.054865][ T1133] schedule+0xd0/0x2a0 [ 596.054884][ T1133] schedule_preempt_disabled+0xf/0x20 [ 596.054896][ T1133] __mutex_lock+0x7ab/0x13c0 [ 596.054912][ T1133] ? fb_open+0xd3/0x430 [ 596.054931][ T1133] ? mutex_trylock+0x2c0/0x2c0 [ 596.054949][ T1133] ? __mutex_unlock_slowpath+0xe2/0x660 [ 596.054962][ T1133] ? chrdev_open+0xc4/0x5c0 [ 596.054983][ T1133] ? lock_downgrade+0x840/0x840 [ 596.055005][ T1133] ? fb_open+0xd3/0x430 [ 596.055017][ T1133] fb_open+0xd3/0x430 [ 596.055033][ T1133] ? get_fb_info.part.0+0x80/0x80 [ 596.055046][ T1133] chrdev_open+0x219/0x5c0 [ 596.055063][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.055080][ T1133] ? security_file_open+0x84/0x410 [ 596.055098][ T1133] do_dentry_open+0x4ba/0x1290 [ 596.055114][ T1133] ? cdev_put.part.0+0x50/0x50 [ 596.055134][ T1133] ? security_inode_permission+0xc4/0xf0 [ 596.055147][ T1133] ? chown_common+0x550/0x550 [ 596.055164][ T1133] ? inode_permission+0xab/0x500 [ 596.055186][ T1133] path_openat+0x1e59/0x27d0 [ 596.055211][ T1133] ? path_lookupat.isra.0+0x530/0x530 [ 596.055230][ T1133] ? lock_acquire+0x1f2/0x8f0 [ 596.055254][ T1133] do_filp_open+0x192/0x260 [ 596.055270][ T1133] ? may_open_dev+0xf0/0xf0 [ 596.055292][ T1133] ? do_raw_spin_lock+0x129/0x2e0 [ 596.055317][ T1133] ? _raw_spin_unlock+0x24/0x40 [ 596.055332][ T1133] ? __alloc_fd+0x46d/0x600 [ 596.055355][ T1133] do_sys_openat2+0x585/0x7d0 [ 596.055372][ T1133] ? file_open_root+0x400/0x400 [ 596.055399][ T1133] do_sys_open+0xc3/0x140 [ 596.055414][ T1133] ? filp_open+0x70/0x70 [ 596.055434][ T1133] ? fpregs_mark_activate+0x320/0x320 [ 596.055450][ T1133] ? trace_hardirqs_off_caller+0x55/0x230 [ 596.055472][ T1133] do_fast_syscall_32+0x270/0xe90 [ 596.055493][ T1133] entry_SYSENTER_compat+0x70/0x7f [ 596.055516][ T1133] [ 596.055516][ T1133] Showing all locks held in the system: [ 596.055529][ T1133] 1 lock held by khungtaskd/1133: [ 596.055534][ T1133] #0: ffffffff899beb00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 596.055592][ T1133] 1 lock held by in:imklog/6703: [ 596.055597][ T1133] #0: ffff8880928c0df0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 596.055632][ T1133] 2 locks held by syz-executor808/7028: [ 596.055642][ T1133] 1 lock held by syz-executor808/7033: [ 596.055647][ T1133] #0: ffff8880a308b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 596.055678][ T1133] 1 lock held by syz-executor808/7034: [ 596.055683][ T1133] #0: ffff8880a308b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 596.055714][ T1133] 1 lock held by syz-executor808/7035: [ 596.055719][ T1133] #0: ffff8880a308b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 596.055750][ T1133] 1 lock held by syz-executor808/7036: [ 596.055755][ T1133] #0: ffff8880a308b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 596.055791][ T1133] 1 lock held by syz-executor808/7037: [ 596.055796][ T1133] #0: ffff8880a308b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 596.055823][ T1133] [ 596.055828][ T1133] ============================================= [ 596.055828][ T1133] [ 596.055834][ T1133] NMI backtrace for cpu 1 [ 596.055849][ T1133] CPU: 1 PID: 1133 Comm: khungtaskd Not tainted 5.7.0-rc2-syzkaller #0 [ 596.055858][ T1133] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 596.055862][ T1133] Call Trace: [ 596.055918][ T1133] dump_stack+0x188/0x20d [ 596.055936][ T1133] nmi_cpu_backtrace.cold+0x70/0xb1 [ 596.055971][ T1133] ? lapic_can_unplug_cpu.cold+0x3b/0x3b [ 596.055986][ T1133] nmi_trigger_cpumask_backtrace+0x231/0x27e [ 596.056020][ T1133] watchdog+0xa8c/0x1010 [ 596.056040][ T1133] ? reset_hung_task_detector+0x30/0x30 [ 596.056088][ T1133] kthread+0x388/0x470 [ 596.056103][ T1133] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 596.056119][ T1133] ret_from_fork+0x24/0x30 [ 596.056144][ T1133] Sending NMI from CPU 1 to CPUs 0: [ 596.056862][ C0] NMI backtrace for cpu 0 [ 596.056867][ C0] CPU: 0 PID: 7028 Comm: syz-executor808 Not tainted 5.7.0-rc2-syzkaller #0 [ 596.056873][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 596.056877][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x16/0x50 [ 596.056887][ C0] Code: f0 13 00 00 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 65 48 8b 04 25 00 1f 02 00 65 8b 15 08 f0 8e 7e 81 e2 00 01 1f 00 <48> 8b 34 24 75 2b 8b 90 d8 13 00 00 83 fa 02 75 20 48 8b 88 e0 13 [ 596.056890][ C0] RSP: 0018:ffffc900051a73f0 EFLAGS: 00000246 [ 596.056897][ C0] RAX: ffff888094d9a040 RBX: 0000000000000000 RCX: ffffffff83bf7134 [ 596.056902][ C0] RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000005 [ 596.056906][ C0] RBP: ffff8880000a0040 R08: ffff888094d9a040 R09: 0000000000000040 [ 596.056911][ C0] R10: ffff8880a47a0b9f R11: ffffed10148f4173 R12: 0000000000000050 [ 596.056915][ C0] R13: ffff8880000a0000 R14: 0000000000000000 R15: 0000000000000048 [ 596.056920][ C0] FS: 0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:000000000875e840 [ 596.056924][ C0] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 596.056928][ C0] CR2: 00000000087670f4 CR3: 00000000a275b000 CR4: 00000000001406f0 [ 596.056933][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 596.056937][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 596.056940][ C0] Call Trace: [ 596.056943][ C0] bitfill_aligned+0xfc/0x200 [ 596.056945][ C0] cfb_fillrect+0x418/0x7a0 [ 596.056949][ C0] ? cfb_fillrect+0x7a0/0x7a0 [ 596.056952][ C0] vga16fb_fillrect+0x68f/0x1960 [ 596.056955][ C0] ? memcpy+0x39/0x60 [ 596.056958][ C0] bit_clear_margins+0x2d5/0x4a0 [ 596.056961][ C0] ? bit_bmove+0x210/0x210 [ 596.056964][ C0] ? vesafb_probe.cold+0x1162/0x1162 [ 596.056967][ C0] fbcon_clear_margins+0x1de/0x240 [ 596.056970][ C0] fbcon_switch+0xd21/0x1740 [ 596.056973][ C0] ? fbcon_set_def_font+0x370/0x370 [ 596.056976][ C0] ? fbcon_cursor+0x477/0x650 [ 596.056979][ C0] ? bit_clear+0x4e0/0x4e0 [ 596.056982][ C0] ? is_console_locked+0x5/0x10 [ 596.056985][ C0] ? fbcon_set_origin+0x26/0x50 [ 596.056988][ C0] redraw_screen+0x2ae/0x770 [ 596.056992][ C0] ? vesafb_probe.cold+0x1162/0x1162 [ 596.056995][ C0] ? respond_string+0x290/0x290 [ 596.056998][ C0] ? fbcon_set_palette+0x3b1/0x4a0 [ 596.057001][ C0] fbcon_modechanged+0x5c3/0x790 [ 596.057004][ C0] fbcon_update_vcs+0x3a/0x50 [ 596.057007][ C0] fb_set_var+0xad0/0xd40 [ 596.057010][ C0] ? fb_blank+0x190/0x190 [ 596.057013][ C0] ? preempt_schedule_common+0x5e/0xc0 [ 596.057017][ C0] ? preempt_schedule_thunk+0x16/0x18 [ 596.057020][ C0] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 596.057023][ C0] do_fb_ioctl+0x390/0x6e0 [ 596.057026][ C0] ? fb_mmap+0x550/0x550 [ 596.057029][ C0] ? lock_downgrade+0x840/0x840 [ 596.057032][ C0] ? quarantine_put+0x119/0x1c0 [ 596.057035][ C0] ? kfree+0x1eb/0x2b0 [ 596.057038][ C0] ? tomoyo_path_number_perm+0x411/0x4d0 [ 596.057041][ C0] ? lockdep_hardirqs_on+0x463/0x620 [ 596.057045][ C0] ? tomoyo_path_number_perm+0x238/0x4d0 [ 596.057048][ C0] ? tomoyo_execute_permission+0x470/0x470 [ 596.057052][ C0] ? trace_hardirqs_off+0x50/0x220 [ 596.057055][ C0] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 596.057058][ C0] ? do_vfs_ioctl+0x50c/0x12d0 [ 596.057061][ C0] fb_compat_ioctl+0x305/0xc50 [ 596.057064][ C0] ? fb_release+0x140/0x140 [ 596.057067][ C0] ? do_sys_open+0xc3/0x140 [ 596.057070][ C0] ? fb_release+0x140/0x140 [ 596.057073][ C0] __ia32_compat_sys_ioctl+0x23d/0x2b0 [ 596.057077][ C0] do_fast_syscall_32+0x270/0xe90 [ 596.057080][ C0] entry_SYSENTER_compat+0x70/0x7f [ 596.057162][ T1133] Kernel panic - not syncing: hung_task: blocked tasks [ 596.057173][ T1133] CPU: 1 PID: 1133 Comm: khungtaskd Not tainted 5.7.0-rc2-syzkaller #0 [ 596.057178][ T1133] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 596.057182][ T1133] Call Trace: [ 596.057195][ T1133] dump_stack+0x188/0x20d [ 596.057249][ T1133] panic+0x2e3/0x75c [ 596.057260][ T1133] ? add_taint.cold+0x16/0x16 [ 596.057275][ T1133] ? cpumask_next+0x3c/0x40 [ 596.057286][ T1133] ? printk_safe_flush+0xd9/0x120 [ 596.057296][ T1133] ? watchdog+0xa8c/0x1010 [ 596.057307][ T1133] ? nmi_trigger_cpumask_backtrace+0x214/0x27e [ 596.057319][ T1133] watchdog+0xa9d/0x1010 [ 596.057334][ T1133] ? reset_hung_task_detector+0x30/0x30 [ 596.057346][ T1133] kthread+0x388/0x470 [ 596.057357][ T1133] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 596.057370][ T1133] ret_from_fork+0x24/0x30 [ 596.058928][ T1133] Kernel Offset: disabled [ 597.728727][ T1133] Rebooting in 86400 seconds..