Warning: Permanently added '10.128.0.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 159.065965][ T32] audit: type=1400 audit(1595244692.076:8): avc: denied { execmem } for pid=8459 comm="syz-executor673" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 159.165570][ T8461] Dev loop0: unable to read RDB block 1 [ 159.171340][ T8461] loop0: unable to read partition table [ 159.177414][ T8461] loop0: partition table beyond EOD, truncated [ 159.183765][ T8461] loop_reread_partitions: partition scan of loop0 () failed (rc=-5) executing program [ 159.335537][ T8468] ===================================================== [ 159.342536][ T8468] BUG: KMSAN: uninit-value in adfspart_check_POWERTEC+0x858/0xa80 [ 159.350351][ T8468] CPU: 0 PID: 8468 Comm: syz-executor673 Not tainted 5.8.0-rc5-syzkaller #0 [ 159.359015][ T8468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 159.369071][ T8468] Call Trace: [ 159.372382][ T8468] dump_stack+0x1df/0x240 [ 159.376719][ T8468] kmsan_report+0xf7/0x1e0 [ 159.381154][ T8468] __msan_warning+0x58/0xa0 [ 159.385661][ T8468] adfspart_check_POWERTEC+0x858/0xa80 [ 159.391131][ T8468] ? kmsan_get_metadata+0x4f/0x180 [ 159.397184][ T8468] ? kmsan_set_origin_checked+0x95/0xf0 [ 159.402719][ T8468] ? kmsan_get_metadata+0x11d/0x180 [ 159.407972][ T8468] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 159.413773][ T8468] ? adfspart_check_ICS+0xe40/0xe40 [ 159.418989][ T8468] blk_add_partitions+0x8e3/0x2640 [ 159.424112][ T8468] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 159.430254][ T8468] ? disk_part_iter_exit+0x8b/0xe0 [ 159.435393][ T8468] bdev_disk_changed+0x5a1/0xa20 [ 159.440377][ T8468] loop_set_status+0x12a1/0x1590 [ 159.445351][ T8468] lo_ioctl+0x205b/0x3750 [ 159.449694][ T8468] ? __se_compat_sys_open+0x21b/0x280 [ 159.455078][ T8468] ? __ia32_compat_sys_open+0x4a/0x70 [ 159.460457][ T8468] ? __do_fast_syscall_32+0x2aa/0x400 [ 159.465837][ T8468] ? do_fast_syscall_32+0x6b/0xd0 [ 159.470897][ T8468] ? do_SYSENTER_32+0x73/0x90 [ 159.475585][ T8468] ? entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 159.482089][ T8468] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 159.488292][ T8468] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 159.494448][ T8468] ? tomoyo_init_request_info+0x428/0x480 [ 159.500186][ T8468] ? tomoyo_path_number_perm+0x33c/0x9a0 [ 159.505842][ T8468] ? kmsan_get_metadata+0x11d/0x180 [ 159.511056][ T8468] lo_compat_ioctl+0x3d7/0x500 [ 159.515842][ T8468] ? __msan_get_context_state+0x9/0x20 [ 159.521309][ T8468] ? blkdev_common_ioctl+0x1c6b/0x3500 [ 159.526785][ T8468] ? kmsan_get_metadata+0x11d/0x180 [ 159.532010][ T8468] ? lo_ioctl+0x3750/0x3750 [ 159.536539][ T8468] compat_blkdev_ioctl+0xadd/0x1060 [ 159.541761][ T8468] ? blkdev_common_ioctl+0x3500/0x3500 [ 159.547225][ T8468] __se_compat_sys_ioctl+0x57c/0xed0 [ 159.552515][ T8468] ? kmsan_get_metadata+0x4f/0x180 [ 159.557646][ T8468] ? kmsan_get_metadata+0x11d/0x180 [ 159.562865][ T8468] ? compat_ptr_ioctl+0x150/0x150 [ 159.567898][ T8468] __ia32_compat_sys_ioctl+0x4a/0x70 [ 159.573201][ T8468] __do_fast_syscall_32+0x2aa/0x400 [ 159.578423][ T8468] do_fast_syscall_32+0x6b/0xd0 [ 159.583286][ T8468] do_SYSENTER_32+0x73/0x90 [ 159.587799][ T8468] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 159.594125][ T8468] RIP: 0023:0xf7f44549 [ 159.598181][ T8468] Code: Bad RIP value. [ 159.602267][ T8468] RSP: 002b:00000000f7f3ef58 EFLAGS: 00000292 ORIG_RAX: 0000000000000036 [ 159.610692][ T8468] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000004c04 [ 159.618665][ T8468] RDX: 00000000f7f3eff4 RSI: 00000000f7f3eff4 RDI: 00000000003d0f00 [ 159.626633][ T8468] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 159.634604][ T8468] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 159.642574][ T8468] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 159.650559][ T8468] [ 159.652879][ T8468] Uninit was stored to memory at: [ 159.657918][ T8468] kmsan_internal_chain_origin+0xad/0x130 [ 159.663640][ T8468] kmsan_memcpy_memmove_metadata+0x272/0x2e0 [ 159.669617][ T8468] kmsan_memcpy_metadata+0xb/0x10 [ 159.674639][ T8468] __msan_memcpy+0x43/0x50 [ 159.679061][ T8468] _copy_to_iter+0x1d89/0x26e0 [ 159.683865][ T8468] copy_page_to_iter+0x40c/0x1bb0 [ 159.688887][ T8468] shmem_file_read_iter+0xa29/0x1160 [ 159.694170][ T8468] do_iter_readv_writev+0x94a/0xb10 [ 159.699369][ T8468] do_iter_read+0x2ea/0xdb0 [ 159.703878][ T8468] vfs_iter_read+0x118/0x180 [ 159.708466][ T8468] loop_queue_work+0x34da/0x41d0 [ 159.713401][ T8468] kthread_worker_fn+0x5a7/0x910 [ 159.718335][ T8468] loop_kthread_worker_fn+0x90/0xb0 [ 159.723531][ T8468] kthread+0x515/0x550 [ 159.727598][ T8468] ret_from_fork+0x22/0x30 [ 159.731999][ T8468] [ 159.734318][ T8468] Uninit was stored to memory at: [ 159.739340][ T8468] kmsan_internal_chain_origin+0xad/0x130 [ 159.745055][ T8468] kmsan_memcpy_memmove_metadata+0x272/0x2e0 [ 159.751032][ T8468] kmsan_memcpy_metadata+0xb/0x10 [ 159.756070][ T8468] __msan_memcpy+0x43/0x50 [ 159.760487][ T8468] iov_iter_copy_from_user_atomic+0x11b1/0x1780 [ 159.766729][ T8468] generic_perform_write+0x499/0x9a0 [ 159.772013][ T8468] __generic_file_write_iter+0x44e/0xa50 [ 159.777660][ T8468] generic_file_write_iter+0x770/0xad0 [ 159.783135][ T8468] do_iter_readv_writev+0x94a/0xb10 [ 159.788332][ T8468] do_iter_write+0x303/0xdc0 [ 159.792922][ T8468] vfs_iter_write+0x118/0x180 [ 159.797688][ T8468] iter_file_splice_write+0xb5f/0x1800 [ 159.803147][ T8468] direct_splice_actor+0x1fd/0x580 [ 159.808274][ T8468] splice_direct_to_actor+0x6b2/0xf50 [ 159.813645][ T8468] do_splice_direct+0x342/0x580 [ 159.818492][ T8468] do_sendfile+0x101b/0x1d40 [ 159.823081][ T8468] __se_compat_sys_sendfile+0x301/0x3c0 [ 159.828643][ T8468] __ia32_compat_sys_sendfile+0x56/0x70 [ 159.834209][ T8468] __do_fast_syscall_32+0x2aa/0x400 [ 159.839405][ T8468] do_fast_syscall_32+0x6b/0xd0 [ 159.844256][ T8468] do_SYSENTER_32+0x73/0x90 [ 159.848758][ T8468] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 159.855070][ T8468] [ 159.857389][ T8468] Uninit was created at: [ 159.861629][ T8468] kmsan_save_stack_with_flags+0x3c/0x90 [ 159.867258][ T8468] kmsan_alloc_page+0xb9/0x180 [ 159.872019][ T8468] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 159.877564][ T8468] alloc_pages_current+0x672/0x990 [ 159.882673][ T8468] push_pipe+0x605/0xb70 [ 159.886916][ T8468] iov_iter_get_pages_alloc+0x18a9/0x21c0 [ 159.892636][ T8468] do_splice_to+0x4fc/0x14f0 [ 159.897223][ T8468] splice_direct_to_actor+0x45c/0xf50 [ 159.902594][ T8468] do_splice_direct+0x342/0x580 [ 159.907443][ T8468] do_sendfile+0x101b/0x1d40 [ 159.912031][ T8468] __se_compat_sys_sendfile+0x301/0x3c0 [ 159.917575][ T8468] __ia32_compat_sys_sendfile+0x56/0x70 [ 159.923122][ T8468] __do_fast_syscall_32+0x2aa/0x400 [ 159.928329][ T8468] do_fast_syscall_32+0x6b/0xd0 [ 159.933183][ T8468] do_SYSENTER_32+0x73/0x90 [ 159.937685][ T8468] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 159.944002][ T8468] ===================================================== [ 159.950924][ T8468] Disabling lock debugging due to kernel taint [ 159.957069][ T8468] Kernel panic - not syncing: panic_on_warn set ... [ 159.963664][ T8468] CPU: 0 PID: 8468 Comm: syz-executor673 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 159.973714][ T8468] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 159.983764][ T8468] Call Trace: [ 159.987065][ T8468] dump_stack+0x1df/0x240 [ 159.991405][ T8468] panic+0x3d5/0xc3e [ 159.995344][ T8468] kmsan_report+0x1df/0x1e0 [ 159.999890][ T8468] __msan_warning+0x58/0xa0 [ 160.004422][ T8468] adfspart_check_POWERTEC+0x858/0xa80 [ 160.009897][ T8468] ? kmsan_get_metadata+0x4f/0x180 [ 160.015011][ T8468] ? kmsan_set_origin_checked+0x95/0xf0 [ 160.020652][ T8468] ? kmsan_get_metadata+0x11d/0x180 [ 160.025860][ T8468] ? kmsan_get_shadow_origin_ptr+0x81/0xb0 [ 160.031668][ T8468] ? adfspart_check_ICS+0xe40/0xe40 [ 160.036878][ T8468] blk_add_partitions+0x8e3/0x2640 [ 160.041993][ T8468] ? __msan_metadata_ptr_for_store_8+0x13/0x20 [ 160.048147][ T8468] ? disk_part_iter_exit+0x8b/0xe0 [ 160.053291][ T8468] bdev_disk_changed+0x5a1/0xa20 [ 160.058258][ T8468] loop_set_status+0x12a1/0x1590 [ 160.063232][ T8468] lo_ioctl+0x205b/0x3750 [ 160.067565][ T8468] ? __se_compat_sys_open+0x21b/0x280 [ 160.072942][ T8468] ? __ia32_compat_sys_open+0x4a/0x70 [ 160.078334][ T8468] ? __do_fast_syscall_32+0x2aa/0x400 [ 160.083711][ T8468] ? do_fast_syscall_32+0x6b/0xd0 [ 160.088736][ T8468] ? do_SYSENTER_32+0x73/0x90 [ 160.093435][ T8468] ? entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 160.099957][ T8468] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 160.106161][ T8468] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 160.112324][ T8468] ? tomoyo_init_request_info+0x428/0x480 [ 160.118062][ T8468] ? tomoyo_path_number_perm+0x33c/0x9a0 [ 160.123703][ T8468] ? kmsan_get_metadata+0x11d/0x180 [ 160.128911][ T8468] lo_compat_ioctl+0x3d7/0x500 [ 160.133714][ T8468] ? __msan_get_context_state+0x9/0x20 [ 160.139173][ T8468] ? blkdev_common_ioctl+0x1c6b/0x3500 [ 160.144651][ T8468] ? kmsan_get_metadata+0x11d/0x180 [ 160.149860][ T8468] ? lo_ioctl+0x3750/0x3750 [ 160.154367][ T8468] compat_blkdev_ioctl+0xadd/0x1060 [ 160.159587][ T8468] ? blkdev_common_ioctl+0x3500/0x3500 [ 160.165051][ T8468] __se_compat_sys_ioctl+0x57c/0xed0 [ 160.170341][ T8468] ? kmsan_get_metadata+0x4f/0x180 [ 160.175472][ T8468] ? kmsan_get_metadata+0x11d/0x180 [ 160.180674][ T8468] ? compat_ptr_ioctl+0x150/0x150 [ 160.185703][ T8468] __ia32_compat_sys_ioctl+0x4a/0x70 [ 160.190995][ T8468] __do_fast_syscall_32+0x2aa/0x400 [ 160.196214][ T8468] do_fast_syscall_32+0x6b/0xd0 [ 160.201074][ T8468] do_SYSENTER_32+0x73/0x90 [ 160.205602][ T8468] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 160.211925][ T8468] RIP: 0023:0xf7f44549 [ 160.215985][ T8468] Code: Bad RIP value. [ 160.220051][ T8468] RSP: 002b:00000000f7f3ef58 EFLAGS: 00000292 ORIG_RAX: 0000000000000036 [ 160.228463][ T8468] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000004c04 [ 160.236436][ T8468] RDX: 00000000f7f3eff4 RSI: 00000000f7f3eff4 RDI: 00000000003d0f00 [ 160.244404][ T8468] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 160.252374][ T8468] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 160.260357][ T8468] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 160.269509][ T8468] Kernel Offset: 0x5400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 160.281038][ T8468] Rebooting in 86400 seconds..