[ 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 '10.128.0.126' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 39.358828] divide error: 0000 [#1] PREEMPT SMP KASAN [ 39.364057] CPU: 0 PID: 8127 Comm: syz-executor882 Not tainted 4.19.163-syzkaller #0 [ 39.371943] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.381307] RIP: 0010:squashfs_readpage+0x93d/0x20e5 [ 39.386525] Code: 34 24 31 d2 48 63 8c 24 9c 00 00 00 49 8b 46 c8 48 89 cf 48 c1 e1 0b c1 e7 0b 89 7c 24 3c 31 ff 48 89 44 24 58 48 63 44 24 60 <48> f7 f1 49 89 c7 89 c6 48 89 44 24 50 89 44 24 1c 89 44 24 38 e8 [ 39.405499] RSP: 0018:ffff88809531f5d0 EFLAGS: 00010246 [ 39.410842] RAX: 0000000000000000 RBX: 0000000000000099 RCX: 0000000000000000 [ 39.418194] RDX: 0000000000000000 RSI: ffffffff81f7485f RDI: 0000000000000000 [ 39.425548] RBP: ffff8880b016c0c0 R08: 0000000000000001 R09: ffffffffffffffff [ 39.432806] R10: 0000000000000007 R11: 0000000000000000 R12: 00000000000000de [ 39.440060] R13: 0000000fffffff11 R14: ffff88808ac1e4f8 R15: 0000000000000000 [ 39.447426] FS: 0000000000fb2880(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 39.455629] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.461496] CR2: 00007fef83b00f60 CR3: 00000000a89d5000 CR4: 00000000001406f0 [ 39.468773] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.476024] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.483278] Call Trace: [ 39.485852] ? page_cache_tree_insert+0x3f0/0x3f0 [ 39.490691] ? check_preemption_disabled+0x41/0x280 [ 39.495693] ? __lru_cache_add+0x1e3/0x2c0 [ 39.499975] ? squashfs_copy_cache+0x6b0/0x6b0 [ 39.504555] ? add_to_page_cache_lru+0x259/0x680 [ 39.509301] ? add_to_page_cache_locked+0x40/0x40 [ 39.514141] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 39.518968] ? find_attach+0x1215/0x1660 [ 39.523038] read_pages.isra.0+0x329/0x5d0 [ 39.527298] ? read_cache_pages+0x750/0x750 [ 39.531603] ? alloc_pages_current+0x19b/0x2a0 [ 39.536184] __do_page_cache_readahead+0x5c6/0x6c0 [ 39.541103] ? read_pages.isra.0+0x5d0/0x5d0 [ 39.545511] ? page_cache_sync_readahead+0x1c5/0x520 [ 39.550595] ondemand_readahead.isra.0+0x575/0xd40 [ 39.555518] page_cache_sync_readahead+0x275/0x520 [ 39.560441] generic_file_read_iter+0x1497/0x2b60 [ 39.565270] ? iov_iter_init+0xb8/0x1d0 [ 39.569227] __vfs_read+0x518/0x750 [ 39.572853] ? __se_sys_copy_file_range+0x410/0x410 [ 39.577864] ? security_file_permission+0x1c0/0x220 [ 39.583078] vfs_read+0x194/0x3c0 [ 39.586592] kernel_read+0xa6/0x110 [ 39.590214] prepare_binprm+0x64f/0x890 [ 39.594200] ? lock_downgrade+0x720/0x720 [ 39.598348] ? install_exec_creds+0x170/0x170 [ 39.602843] __do_execve_file+0xfb8/0x2360 [ 39.607073] ? open_exec+0x70/0x70 [ 39.610600] ? check_preemption_disabled+0x41/0x280 [ 39.615611] ? __sanitizer_cov_trace_switch+0x4b/0x80 [ 39.620868] ? __phys_addr+0x9a/0x110 [ 39.624659] ? __check_object_size+0x17b/0x3d1 [ 39.629223] do_execveat+0x3d/0x50 [ 39.632743] __x64_sys_execveat+0xe1/0x120 [ 39.636972] do_syscall_64+0xf9/0x620 [ 39.640846] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.646062] RIP: 0033:0x4443c9 [ 39.649272] Code: 8d d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 5b d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 39.668250] RSP: 002b:00007ffd6703ed98 EFLAGS: 00000246 ORIG_RAX: 0000000000000142 [ 39.675935] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 00000000004443c9 [ 39.683185] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000005 [ 39.690431] RBP: 00000000006cf018 R08: 0000000000000000 R09: 00000000004002e0 [ 39.697679] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401fb0 [ 39.704940] R13: 0000000000402040 R14: 0000000000000000 R15: 0000000000000000 [ 39.712200] Modules linked in: [ 39.716022] ---[ end trace c1544e0511967122 ]--- [ 39.720789] RIP: 0010:squashfs_readpage+0x93d/0x20e5 [ 39.726110] Code: 34 24 31 d2 48 63 8c 24 9c 00 00 00 49 8b 46 c8 48 89 cf 48 c1 e1 0b c1 e7 0b 89 7c 24 3c 31 ff 48 89 44 24 58 48 63 44 24 60 <48> f7 f1 49 89 c7 89 c6 48 89 44 24 50 89 44 24 1c 89 44 24 38 e8 [ 39.745083] RSP: 0018:ffff88809531f5d0 EFLAGS: 00010246 [ 39.750458] RAX: 0000000000000000 RBX: 0000000000000099 RCX: 0000000000000000 [ 39.757917] RDX: 0000000000000000 RSI: ffffffff81f7485f RDI: 0000000000000000 [ 39.765468] RBP: ffff8880b016c0c0 R08: 0000000000000001 R09: ffffffffffffffff [ 39.772741] R10: 0000000000000007 R11: 0000000000000000 R12: 00000000000000de [ 39.780450] R13: 0000000fffffff11 R14: ffff88808ac1e4f8 R15: 0000000000000000 [ 39.787772] FS: 0000000000fb2880(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 39.796097] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.801987] CR2: 00007fef83b00f60 CR3: 00000000a89d5000 CR4: 00000000001406f0 [ 39.809307] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.816642] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.823942] Kernel panic - not syncing: Fatal exception [ 39.829944] Kernel Offset: disabled [ 39.833572] Rebooting in 86400 seconds..