Starting Permit User Sessions... [ OK ] Started Daily apt download activities. [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started Regular background program processing daemon. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ 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 '10.128.0.134' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.543464][ T34] audit: type=1400 audit(1606174902.982:8): avc: denied { execmem } for pid=8463 comm="syz-executor310" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 71.553997][ T8463] ERROR: (device loop0): xtSearch: XT_GETPAGE: xtree page corrupt [ 71.553997][ T8463] [ 71.577818][ T8463] BUG: unable to handle page fault for address: ffffffffffffff80 [ 71.585540][ T8463] #PF: supervisor read access in kernel mode [ 71.591508][ T8463] #PF: error_code(0x0000) - not-present page [ 71.597471][ T8463] PGD b08f067 P4D b08f067 PUD b091067 PMD 0 [ 71.603464][ T8463] Oops: 0000 [#1] PREEMPT SMP KASAN [ 71.608654][ T8463] CPU: 0 PID: 8463 Comm: syz-executor310 Not tainted 5.10.0-rc5-syzkaller #0 [ 71.617395][ T8463] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.627448][ T8463] RIP: 0010:diFree+0x13d/0x2dc0 [ 71.632275][ T8463] Code: 28 48 8d 78 80 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ef 23 00 00 48 8b 44 24 18 <4c> 8b 60 80 48 8b 44 24 20 49 8d 6c 24 04 48 c1 e8 0c 48 89 ea 48 [ 71.651855][ T8463] RSP: 0018:ffffc90000ec7960 EFLAGS: 00010246 [ 71.657898][ T8463] RAX: 0000000000000000 RBX: ffff888017bdb000 RCX: ffffffff82a81927 [ 71.665860][ T8463] RDX: 1ffffffffffffff0 RSI: ffffffff82aa4942 RDI: ffffffffffffff80 [ 71.673807][ T8463] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880377790df [ 71.681757][ T8463] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888037779588 [ 71.689849][ T8463] R13: ffff8880377794d8 R14: ffffffff89829740 R15: ffff8880377794b0 [ 71.697915][ T8463] FS: 0000000001e2c880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 71.706836][ T8463] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.713393][ T8463] CR2: ffffffffffffff80 CR3: 0000000012bd5000 CR4: 00000000001506f0 [ 71.721376][ T8463] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.729317][ T8463] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.737267][ T8463] Call Trace: [ 71.740537][ T8463] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 71.746490][ T8463] ? __dquot_initialize+0x298/0xc20 [ 71.751678][ T8463] ? find_held_lock+0x2d/0x110 [ 71.756449][ T8463] ? dquot_initialize_needed+0x290/0x290 [ 71.762142][ T8463] ? diWrite+0x1430/0x1430 [ 71.766530][ T8463] ? lock_downgrade+0x6d0/0x6d0 [ 71.771457][ T8463] ? var_wake_function+0x130/0x130 [ 71.776538][ T8463] ? rwlock_bug.part.0+0x90/0x90 [ 71.781458][ T8463] jfs_evict_inode+0x2c9/0x370 [ 71.786195][ T8463] ? jfs_write_inode+0x1e0/0x1e0 [ 71.791122][ T8463] evict+0x2ed/0x750 [ 71.795024][ T8463] iput.part.0+0x3fe/0x820 [ 71.799415][ T8463] iput+0x58/0x70 [ 71.803022][ T8463] diFreeSpecial+0x6f/0x90 [ 71.807412][ T8463] jfs_mount+0x23f/0x3d0 [ 71.811630][ T8463] jfs_fill_super+0x5b1/0xbc0 [ 71.816313][ T8463] ? init_once+0x130/0x130 [ 71.820707][ T8463] ? set_blocksize+0x1c1/0x400 [ 71.825447][ T8463] mount_bdev+0x32e/0x3f0 [ 71.829752][ T8463] ? init_once+0x130/0x130 [ 71.834142][ T8463] ? jfs_get_dquots+0x10/0x10 [ 71.838793][ T8463] legacy_get_tree+0x105/0x220 [ 71.843545][ T8463] vfs_get_tree+0x89/0x2f0 [ 71.847934][ T8463] path_mount+0x13ad/0x20c0 [ 71.852413][ T8463] ? strncpy_from_user+0x2a0/0x3e0 [ 71.857504][ T8463] ? finish_automount+0xac0/0xac0 [ 71.862515][ T8463] ? getname_flags.part.0+0x1dd/0x4f0 [ 71.867859][ T8463] __x64_sys_mount+0x27f/0x300 [ 71.872597][ T8463] ? copy_mnt_ns+0xa60/0xa60 [ 71.877159][ T8463] ? syscall_enter_from_user_mode+0x1d/0x50 [ 71.883023][ T8463] do_syscall_64+0x2d/0x70 [ 71.887415][ T8463] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 71.893278][ T8463] RIP: 0033:0x446dea [ 71.897147][ T8463] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 71.916724][ T8463] RSP: 002b:00007ffe97a45e88 EFLAGS: 00000283 ORIG_RAX: 00000000000000a5 [ 71.925107][ T8463] RAX: ffffffffffffffda RBX: 00007ffe97a45ed0 RCX: 0000000000446dea [ 71.933053][ T8463] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe97a45e90 [ 71.941086][ T8463] RBP: 00007ffe97a45e90 R08: 00007ffe97a45ed0 R09: 6f6f6c2f7665642f [ 71.949031][ T8463] R10: 0000000000008001 R11: 0000000000000283 R12: 0000000000000004 [ 71.956975][ T8463] R13: 0000000000000003 R14: 0000000000000003 R15: 0000000000000006 [ 71.964919][ T8463] Modules linked in: [ 71.968787][ T8463] CR2: ffffffffffffff80 [ 71.972921][ T8463] ---[ end trace 88da5f83b02fc221 ]--- [ 71.978360][ T8463] RIP: 0010:diFree+0x13d/0x2dc0 [ 71.983187][ T8463] Code: 28 48 8d 78 80 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ef 23 00 00 48 8b 44 24 18 <4c> 8b 60 80 48 8b 44 24 20 49 8d 6c 24 04 48 c1 e8 0c 48 89 ea 48 [ 72.002761][ T8463] RSP: 0018:ffffc90000ec7960 EFLAGS: 00010246 [ 72.008804][ T8463] RAX: 0000000000000000 RBX: ffff888017bdb000 RCX: ffffffff82a81927 [ 72.016750][ T8463] RDX: 1ffffffffffffff0 RSI: ffffffff82aa4942 RDI: ffffffffffffff80 [ 72.024704][ T8463] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880377790df [ 72.032660][ T8463] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888037779588 [ 72.040603][ T8463] R13: ffff8880377794d8 R14: ffffffff89829740 R15: ffff8880377794b0 [ 72.048549][ T8463] FS: 0000000001e2c880(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 72.057449][ T8463] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.064005][ T8463] CR2: ffffffffffffff80 CR3: 0000000012bd5000 CR4: 00000000001506f0 [ 72.071948][ T8463] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.079904][ T8463] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.087845][ T8463] Kernel panic - not syncing: Fatal exception [ 72.094559][ T8463] Kernel Offset: disabled [ 72.098866][ T8463] Rebooting in 86400 seconds..