Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 64.955351][ T6886] ================================================================================ [ 64.965034][ T6886] UBSAN: array-index-out-of-bounds in drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:942:56 [ 64.975680][ T6886] index 29375 is out of range for type 's8 [257]' [ 64.982346][ T6886] CPU: 0 PID: 6886 Comm: vivid-000-vid-c Not tainted 5.9.0-rc8-syzkaller #0 [ 64.991021][ T6886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.001086][ T6886] Call Trace: [ 65.004381][ T6886] dump_stack+0x198/0x1fd [ 65.008711][ T6886] ubsan_epilogue+0xb/0x5a [ 65.013122][ T6886] __ubsan_handle_out_of_bounds.cold+0x62/0x6c [ 65.019275][ T6886] precalculate_color+0x2621/0x2900 [ 65.024498][ T6886] ? color_to_ycbcr.isra.0+0x720/0x720 [ 65.029986][ T6886] ? update_group_capacity+0x840/0x840 [ 65.035452][ T6886] tpg_recalc+0x5c8/0x2910 [ 65.039863][ T6886] ? find_busiest_group+0x9a/0x820 [ 65.044983][ T6886] ? update_sd_lb_stats.constprop.0+0x29d0/0x29d0 [ 65.051452][ T6886] ? gen_twopix+0x61a0/0x61a0 [ 65.056144][ T6886] ? mark_lock+0x82/0x1660 [ 65.060594][ T6886] tpg_calc_text_basep+0xbe/0x2b0 [ 65.065671][ T6886] vivid_fillbuff+0x188d/0x3c50 [ 65.070577][ T6886] ? vivid_grab_controls+0x380/0x380 [ 65.075908][ T6886] ? lock_is_held_type+0xbb/0xf0 [ 65.080841][ T6886] ? find_held_lock+0x2d/0x110 [ 65.085623][ T6886] ? vivid_thread_vid_cap_tick+0x10f4/0x2350 [ 65.091615][ T6886] ? lock_downgrade+0x830/0x830 [ 65.096470][ T6886] ? do_raw_spin_lock+0x120/0x2b0 [ 65.101519][ T6886] ? v4l2_ctrl_request_setup+0x45f/0xb00 [ 65.107145][ T6886] ? rwlock_bug.part.0+0x90/0x90 [ 65.112085][ T6886] vivid_thread_vid_cap_tick+0x88b/0x2350 [ 65.117826][ T6886] ? check_preemption_disabled+0x50/0x130 [ 65.123550][ T6886] ? read_seqcount_t_begin.constprop.0+0x17d/0x1e0 [ 65.130054][ T6886] ? lockdep_hardirqs_on+0x53/0x100 [ 65.135289][ T6886] ? mutex_trylock+0x246/0x2c0 [ 65.140056][ T6886] ? vivid_thread_vid_cap+0x2b9/0xa50 [ 65.145425][ T6886] vivid_thread_vid_cap+0x5d1/0xa50 [ 65.150625][ T6886] ? vivid_thread_vid_cap_tick+0x2350/0x2350 [ 65.156603][ T6886] kthread+0x3b5/0x4a0 [ 65.160677][ T6886] ? __kthread_bind_mask+0xc0/0xc0 [ 65.165783][ T6886] ret_from_fork+0x1f/0x30 [ 65.170729][ T6886] ================================================================================ [ 65.180292][ T6886] Kernel panic - not syncing: panic_on_warn set ... [ 65.186909][ T6886] CPU: 0 PID: 6886 Comm: vivid-000-vid-c Not tainted 5.9.0-rc8-syzkaller #0 [ 65.195599][ T6886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.205653][ T6886] Call Trace: [ 65.208945][ T6886] dump_stack+0x198/0x1fd [ 65.213272][ T6886] panic+0x382/0x7fb [ 65.217157][ T6886] ? __warn_printk+0xf3/0xf3 [ 65.221741][ T6886] ? mark_lock+0x82/0x1660 [ 65.226147][ T6886] ? ubsan_epilogue+0x3e/0x5a [ 65.230828][ T6886] ? ubsan_epilogue+0x35/0x5a [ 65.235517][ T6886] ubsan_epilogue+0x54/0x5a [ 65.240027][ T6886] __ubsan_handle_out_of_bounds.cold+0x62/0x6c [ 65.246194][ T6886] precalculate_color+0x2621/0x2900 [ 65.251405][ T6886] ? color_to_ycbcr.isra.0+0x720/0x720 [ 65.256859][ T6886] ? update_group_capacity+0x840/0x840 [ 65.262322][ T6886] tpg_recalc+0x5c8/0x2910 [ 65.266732][ T6886] ? find_busiest_group+0x9a/0x820 [ 65.271839][ T6886] ? update_sd_lb_stats.constprop.0+0x29d0/0x29d0 [ 65.278253][ T6886] ? gen_twopix+0x61a0/0x61a0 [ 65.282939][ T6886] ? mark_lock+0x82/0x1660 [ 65.287376][ T6886] tpg_calc_text_basep+0xbe/0x2b0 [ 65.292445][ T6886] vivid_fillbuff+0x188d/0x3c50 [ 65.297327][ T6886] ? vivid_grab_controls+0x380/0x380 [ 65.302606][ T6886] ? lock_is_held_type+0xbb/0xf0 [ 65.307557][ T6886] ? find_held_lock+0x2d/0x110 [ 65.312342][ T6886] ? vivid_thread_vid_cap_tick+0x10f4/0x2350 [ 65.318321][ T6886] ? lock_downgrade+0x830/0x830 [ 65.323186][ T6886] ? do_raw_spin_lock+0x120/0x2b0 [ 65.328232][ T6886] ? v4l2_ctrl_request_setup+0x45f/0xb00 [ 65.333874][ T6886] ? rwlock_bug.part.0+0x90/0x90 [ 65.338814][ T6886] vivid_thread_vid_cap_tick+0x88b/0x2350 [ 65.344572][ T6886] ? check_preemption_disabled+0x50/0x130 [ 65.350293][ T6886] ? read_seqcount_t_begin.constprop.0+0x17d/0x1e0 [ 65.356815][ T6886] ? lockdep_hardirqs_on+0x53/0x100 [ 65.362011][ T6886] ? mutex_trylock+0x246/0x2c0 [ 65.366767][ T6886] ? vivid_thread_vid_cap+0x2b9/0xa50 [ 65.372155][ T6886] vivid_thread_vid_cap+0x5d1/0xa50 [ 65.377354][ T6886] ? vivid_thread_vid_cap_tick+0x2350/0x2350 [ 65.383344][ T6886] kthread+0x3b5/0x4a0 [ 65.387408][ T6886] ? __kthread_bind_mask+0xc0/0xc0 [ 65.392529][ T6886] ret_from_fork+0x1f/0x30 [ 65.398232][ T6886] Kernel Offset: disabled [ 65.402704][ T6886] Rebooting in 86400 seconds..