[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.242' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 39.746464] audit: type=1400 audit(1600670502.231:8): avc: denied { execmem } for pid=6496 comm="syz-executor258" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 39.767938] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal [ 39.777544] REISERFS (device loop0): using ordered data mode [ 39.784001] reiserfs: using flush barriers [ 39.790307] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 1024, max batch 900, max commit age 0, max trans age 30 [ 39.808789] REISERFS (device loop0): checking transaction log (loop0) [ 39.817407] REISERFS (device loop0): Using rupasov hash to sort names [ 39.824426] REISERFS (device loop0): using 3.5.x disk format [ 39.840101] reiserfs: enabling write barrier flush mode [ 39.849247] ------------[ cut here ]------------ [ 39.854616] WARNING: CPU: 1 PID: 6496 at fs/inode.c:979 unlock_new_inode.cold+0x11/0x3f [ 39.862783] Kernel panic - not syncing: panic_on_warn set ... [ 39.862783] [ 39.870149] CPU: 1 PID: 6496 Comm: syz-executor258 Not tainted 4.19.146-syzkaller #0 [ 39.878047] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.887410] Call Trace: [ 39.889985] dump_stack+0x22c/0x33e [ 39.893611] panic+0x2ac/0x565 [ 39.896786] ? __warn_printk+0xf3/0xf3 [ 39.900681] ? unlock_new_inode.cold+0x11/0x3f [ 39.905243] ? __probe_kernel_read+0x130/0x1b0 [ 39.909819] ? __warn.cold+0x5/0x5a [ 39.913423] ? __warn+0xe4/0x200 [ 39.916785] ? unlock_new_inode.cold+0x11/0x3f [ 39.921349] __warn.cold+0x20/0x5a [ 39.924871] ? unlock_new_inode.cold+0x11/0x3f [ 39.929528] report_bug+0x262/0x2b0 [ 39.933145] do_error_trap+0x1e1/0x330 [ 39.937027] ? math_error+0x320/0x320 [ 39.940809] ? __irq_work_queue_local+0x155/0x200 [ 39.945938] ? irq_work_queue+0x29/0x80 [ 39.949911] ? wake_up_klogd+0xef/0x140 [ 39.953876] ? vprintk_emit+0x1d0/0x7c0 [ 39.957841] ? trace_hardirqs_off_caller+0x69/0x210 [ 39.962842] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.967671] invalid_op+0x14/0x20 [ 39.971119] RIP: 0010:unlock_new_inode.cold+0x11/0x3f [ 39.976289] Code: ee e8 31 ee b4 ff 48 c7 c7 80 0e 16 88 e8 54 69 9e ff 0f 0b e9 a7 76 ff ff e8 19 ee b4 ff 48 c7 c7 80 0e 16 88 e8 3c 69 9e ff <0f> 0b b8 ff ff 37 00 4c 89 e2 48 c1 ea 03 48 c1 e0 2a 80 3c 02 00 [ 39.995188] RSP: 0018:ffff8880a4e77670 EFLAGS: 00010286 [ 40.000541] RAX: 0000000000000024 RBX: ffff888082bf91a8 RCX: 0000000000000000 [ 40.007800] RDX: 0000000000000000 RSI: ffffffff815b523f RDI: ffffed10149ceec0 [ 40.015056] RBP: 0000000000000000 R08: 0000000000000024 R09: 0000000000000000 [ 40.022312] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888082bf9278 [ 40.029563] R13: ffff888082bf9230 R14: 0000000000000000 R15: 00000000fffffff4 [ 40.036868] ? vprintk_func+0x7f/0x224 [ 40.040768] reiserfs_new_inode+0x3b8/0x2150 [ 40.045167] ? find_held_lock+0x58/0x110 [ 40.049215] ? reiserfs_fh_to_parent+0x1b0/0x1b0 [ 40.053955] ? ww_mutex_unlock+0x2f0/0x2f0 [ 40.058184] ? do_journal_begin_r+0x298/0x10d0 [ 40.062746] ? ww_mutex_unlock+0x2f0/0x2f0 [ 40.066978] ? __mutex_unlock_slowpath+0xea/0x660 [ 40.071804] ? __mutex_add_waiter+0x160/0x160 [ 40.076282] ? __mutex_add_waiter+0x160/0x160 [ 40.080768] ? do_journal_begin_r+0xd24/0x10d0 [ 40.085343] ? security_old_inode_init_security+0xf4/0x130 [ 40.090969] reiserfs_mkdir+0x4ad/0x980 [ 40.094964] ? reiserfs_mknod+0x700/0x700 [ 40.099105] ? ww_mutex_unlock+0x2f0/0x2f0 [ 40.103371] reiserfs_xattr_init+0x406/0xae0 [ 40.107797] reiserfs_remount+0x103c/0x1640 [ 40.112128] ? finish_unfinished.isra.0+0x13a0/0x13a0 [ 40.117305] ? mark_held_locks+0xf0/0xf0 [ 40.121349] ? find_next_bit+0x105/0x130 [ 40.126091] ? selinux_inode_copy_up+0x180/0x180 [ 40.130844] ? selinux_mount+0x21c/0x360 [ 40.134903] do_remount_sb+0x1a0/0x6a0 [ 40.138795] ? finish_unfinished.isra.0+0x13a0/0x13a0 [ 40.143970] ? user_get_super+0x1f0/0x1f0 [ 40.148114] ? security_capable+0x8f/0xc0 [ 40.152262] do_mount+0x1854/0x2f10 [ 40.155887] ? check_preemption_disabled+0x41/0x2b0 [ 40.160883] ? copy_mount_string+0x40/0x40 [ 40.165103] ? kmem_cache_alloc_trace+0x379/0x4b0 [ 40.169930] ? _copy_from_user+0xd2/0x130 [ 40.174060] ? copy_mount_options+0x261/0x370 [ 40.178547] ksys_mount+0xcf/0x130 [ 40.182069] __x64_sys_mount+0xba/0x150 [ 40.186023] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 40.190586] do_syscall_64+0xf9/0x670 [ 40.194369] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.199539] RIP: 0033:0x44700a [ 40.202711] 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 [ 40.221609] RSP: 002b:00007ffff3046058 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 40.229302] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 000000000044700a [ 40.236643] RDX: 0000000020000540 RSI: 0000000020000580 RDI: 0000000000000000 [ 40.243891] RBP: 0000000000000000 R08: 00007ffff30460f0 R09: 0000000020001ec0 [ 40.251154] R10: 0000000000240038 R11: 0000000000000297 R12: 00000000ffffffff [ 40.258401] R13: 0000000000000000 R14: 00007ffff30460f0 R15: 0000000000000000 [ 40.267153] Kernel Offset: disabled [ 40.270942] Rebooting in 86400 seconds..