[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.193' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 66.296707][ T6523] loop0: detected capacity change from 0 to 1 [ 66.304881][ T6523] BUG: unable to handle page fault for address: ffffed101e501750 [ 66.312617][ T6523] #PF: supervisor read access in kernel mode [ 66.318595][ T6523] #PF: error_code(0x0000) - not-present page [ 66.324569][ T6523] PGD 23ffee067 P4D 23ffee067 PUD 13fff5067 PMD 0 [ 66.331090][ T6523] Oops: 0000 [#1] PREEMPT SMP KASAN [ 66.336295][ T6523] CPU: 1 PID: 6523 Comm: syz-executor279 Not tainted 5.15.0-rc7-next-20211028-syzkaller #0 [ 66.346273][ T6523] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.356328][ T6523] RIP: 0010:__blk_mq_alloc_requests+0x4a7/0xb00 [ 66.362615][ T6523] Code: e8 fd 48 8b 44 24 10 80 38 00 0f 85 a6 04 00 00 48 8b 44 24 08 45 89 ed 48 8b b0 88 00 00 00 4a 8d 1c ee 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 6c 04 00 00 44 8b ac 24 a0 00 00 00 48 8b 03 [ 66.382226][ T6523] RSP: 0018:ffffc900027fea90 EFLAGS: 00010a06 [ 66.388277][ T6523] RAX: 1ffff1101e501750 RBX: ffff8880f280ba80 RCX: 0000000000000000 [ 66.396231][ T6523] RDX: ffff888017bd1d40 RSI: ffff888019f43000 RDI: 0000000000000003 [ 66.404202][ T6523] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 [ 66.412163][ T6523] R10: ffffffff838f31a1 R11: 0000000000000000 R12: 0000000000000000 [ 66.420133][ T6523] R13: 000000001b119150 R14: dffffc0000000000 R15: ffffc900027fec28 [ 66.428104][ T6523] FS: 00005555573e63c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 66.437018][ T6523] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.443581][ T6523] CR2: ffffed101e501750 CR3: 0000000021651000 CR4: 00000000003506e0 [ 66.451535][ T6523] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.459483][ T6523] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.467435][ T6523] Call Trace: [ 66.470695][ T6523] [ 66.473610][ T6523] ? blk_mq_hctx_mark_pending+0x2a0/0x2a0 [ 66.479327][ T6523] ? iolatency_pd_alloc+0x1b0/0x1b0 [ 66.484509][ T6523] blk_mq_submit_bio+0xdac/0x1b40 [ 66.489512][ T6523] ? blk_mq_try_issue_list_directly+0x4d0/0x4d0 [ 66.495734][ T6523] ? submit_bio_checks+0x26a/0x1d90 [ 66.500920][ T6523] __submit_bio+0x794/0x8e0 [ 66.505402][ T6523] ? find_held_lock+0x2d/0x110 [ 66.510275][ T6523] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 66.516498][ T6523] ? submit_bio_checks+0x1d90/0x1d90 [ 66.521778][ T6523] ? bio_add_page+0x186/0x1f0 [ 66.526441][ T6523] ? __bio_try_merge_page+0x360/0x360 [ 66.531803][ T6523] submit_bio_noacct+0x6c9/0x8a0 [ 66.536736][ T6523] ? __submit_bio+0x8e0/0x8e0 [ 66.541396][ T6523] submit_bio+0x1ea/0x430 [ 66.545707][ T6523] ? submit_bio_noacct+0x8a0/0x8a0 [ 66.550807][ T6523] mpage_readahead+0x589/0x750 [ 66.555576][ T6523] ? do_mpage_readpage+0x1f80/0x1f80 [ 66.560855][ T6523] ? __blkdev_direct_IO_simple+0x860/0x860 [ 66.566648][ T6523] ? folio_add_lru+0x353/0x6a0 [ 66.571400][ T6523] ? lock_downgrade+0x6e0/0x6e0 [ 66.576245][ T6523] ? blkdev_write_begin+0x40/0x40 [ 66.581255][ T6523] read_pages+0x1e4/0xfa0 [ 66.585570][ T6523] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 66.591843][ T6523] ? folio_add_lru+0x508/0x6a0 [ 66.596589][ T6523] ? readahead_expand+0x8b0/0x8b0 [ 66.601594][ T6523] ? filemap_add_folio+0x138/0x1d0 [ 66.606689][ T6523] ? add_to_page_cache_locked+0x90/0x90 [ 66.612216][ T6523] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 66.618439][ T6523] ? folio_alloc+0x3f/0x70 [ 66.622840][ T6523] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 66.629067][ T6523] page_cache_ra_unbounded+0x64b/0x940 [ 66.634511][ T6523] ? read_pages+0xfa0/0xfa0 [ 66.638995][ T6523] ? lock_downgrade+0x6e0/0x6e0 [ 66.643867][ T6523] ondemand_readahead+0x594/0x1090 [ 66.648960][ T6523] page_cache_sync_ra+0x1cb/0x200 [ 66.653976][ T6523] filemap_get_pages+0x2b2/0x1be0 [ 66.658984][ T6523] ? filemap_get_read_batch+0xad0/0xad0 [ 66.664513][ T6523] filemap_read+0x315/0xeb0 [ 66.668997][ T6523] ? aa_file_perm+0x595/0x1180 [ 66.673759][ T6523] ? filemap_get_pages+0x1be0/0x1be0 [ 66.679026][ T6523] ? fsnotify+0x12b0/0x12b0 [ 66.683509][ T6523] ? import_single_range+0x288/0x320 [ 66.688776][ T6523] ? __io_import_iovec+0x36f/0x1330 [ 66.693967][ T6523] generic_file_read_iter+0x3b6/0x5a0 [ 66.699321][ T6523] blkdev_read_iter+0x117/0x200 [ 66.704248][ T6523] ? blkdev_write_iter+0x6a0/0x6a0 [ 66.709347][ T6523] io_read+0x33c/0xff0 [ 66.713400][ T6523] ? stack_trace_save+0x8c/0xc0 [ 66.718581][ T6523] ? kiocb_done+0xb90/0xb90 [ 66.723085][ T6523] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 66.729044][ T6523] ? lock_chain_count+0x20/0x20 [ 66.733877][ T6523] io_issue_sqe+0x800/0x7010 [ 66.738456][ T6523] ? find_held_lock+0x2d/0x110 [ 66.743204][ T6523] ? __fget_files+0x21b/0x3e0 [ 66.747862][ T6523] ? lock_downgrade+0x6e0/0x6e0 [ 66.752692][ T6523] ? io_openat2+0xb50/0xb50 [ 66.757177][ T6523] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 66.763664][ T6523] io_submit_sqes+0x1bca/0x8a20 [ 66.768501][ T6523] ? find_held_lock+0x2d/0x110 [ 66.773245][ T6523] ? io_async_task_func+0x550/0x550 [ 66.778437][ T6523] ? __do_sys_io_uring_enter+0xf6e/0x1f50 [ 66.784156][ T6523] __do_sys_io_uring_enter+0xf6e/0x1f50 [ 66.789703][ T6523] ? io_submit_sqes+0x8a20/0x8a20 [ 66.794720][ T6523] ? find_held_lock+0x2d/0x110 [ 66.799465][ T6523] ? __context_tracking_exit+0xb8/0xe0 [ 66.804922][ T6523] ? lock_downgrade+0x6e0/0x6e0 [ 66.809755][ T6523] ? lock_downgrade+0x6e0/0x6e0 [ 66.814590][ T6523] ? syscall_enter_from_user_mode+0x21/0x70 [ 66.820486][ T6523] do_syscall_64+0x35/0xb0 [ 66.824884][ T6523] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 66.830764][ T6523] RIP: 0033:0x7f8a945379c9 [ 66.835159][ T6523] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c4 ff ff ff f7 d8 64 89 01 48 [ 66.854743][ T6523] RSP: 002b:00007ffea64277e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa [ 66.863136][ T6523] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8a945379c9 [ 66.871102][ T6523] RDX: 0000000000000000 RSI: 00000000000002ff RDI: 0000000000000003 [ 66.879057][ T6523] RBP: 00007ffea6427800 R08: 0000000000000000 R09: 0000000000000000 [ 66.887389][ T6523] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 66.895442][ T6523] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 66.903414][ T6523] [ 66.906431][ T6523] Modules linked in: [ 66.910309][ T6523] CR2: ffffed101e501750 [ 66.914448][ T6523] ---[ end trace dde64fe0ea4dcb18 ]--- [ 66.920027][ T6523] RIP: 0010:__blk_mq_alloc_requests+0x4a7/0xb00 [ 66.926318][ T6523] Code: e8 fd 48 8b 44 24 10 80 38 00 0f 85 a6 04 00 00 48 8b 44 24 08 45 89 ed 48 8b b0 88 00 00 00 4a 8d 1c ee 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 6c 04 00 00 44 8b ac 24 a0 00 00 00 48 8b 03 [ 66.946041][ T6523] RSP: 0018:ffffc900027fea90 EFLAGS: 00010a06 [ 66.952091][ T6523] RAX: 1ffff1101e501750 RBX: ffff8880f280ba80 RCX: 0000000000000000 [ 66.960096][ T6523] RDX: ffff888017bd1d40 RSI: ffff888019f43000 RDI: 0000000000000003 [ 66.968094][ T6523] RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 [ 66.976051][ T6523] R10: ffffffff838f31a1 R11: 0000000000000000 R12: 0000000000000000 [ 66.984010][ T6523] R13: 000000001b119150 R14: dffffc0000000000 R15: ffffc900027fec28 [ 66.991986][ T6523] FS: 00005555573e63c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 67.000916][ T6523] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.007488][ T6523] CR2: ffffed101e501750 CR3: 0000000021651000 CR4: 00000000003506e0 [ 67.015449][ T6523] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.023403][ T6523] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.031364][ T6523] Kernel panic - not syncing: Fatal exception [ 67.037687][ T6523] Kernel Offset: disabled [ 67.042030][ T6523] Rebooting in 86400 seconds..