Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.155' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.450778] audit: type=1400 audit(1601426321.453:8): avc: denied { execmem } for pid=6504 comm="syz-executor740" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 40.479136] REISERFS (device loop0): found reiserfs format "3.6" with non-standard journal [ 40.489675] REISERFS (device loop0): using ordered data mode [ 40.496209] reiserfs: using flush barriers [ 40.502790] REISERFS (device loop0): journal params: device loop0, size 15748, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 [ 40.533089] REISERFS (device loop0): checking transaction log (loop0) [ 42.180947] REISERFS (device loop0): Using r5 hash to sort names [ 42.187710] ------------[ cut here ]------------ [ 42.192731] WARNING: CPU: 1 PID: 6505 at fs/inode.c:979 unlock_new_inode.cold+0x11/0x3f [ 42.200859] Kernel panic - not syncing: panic_on_warn set ... [ 42.200859] [ 42.208204] CPU: 1 PID: 6505 Comm: syz-executor740 Not tainted 4.19.148-syzkaller #0 [ 42.216062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.225394] Call Trace: [ 42.227980] dump_stack+0x22c/0x33e [ 42.231605] panic+0x2ac/0x565 [ 42.234785] ? __warn_printk+0xf3/0xf3 [ 42.238659] ? unlock_new_inode.cold+0x11/0x3f [ 42.243229] ? __probe_kernel_read+0x130/0x1b0 [ 42.247804] ? __warn.cold+0x5/0x5a [ 42.251413] ? __warn+0xe4/0x200 [ 42.254780] ? unlock_new_inode.cold+0x11/0x3f [ 42.259347] __warn.cold+0x20/0x5a [ 42.262886] ? unlock_new_inode.cold+0x11/0x3f [ 42.267452] report_bug+0x262/0x2b0 [ 42.271064] do_error_trap+0x1e1/0x330 [ 42.274934] ? math_error+0x320/0x320 [ 42.278717] ? irq_work_claim+0xa6/0xc0 [ 42.282676] ? irq_work_queue+0x29/0x80 [ 42.286659] ? wake_up_klogd+0xef/0x140 [ 42.290627] ? vprintk_emit+0x1d0/0x7c0 [ 42.294594] ? trace_hardirqs_off_caller+0x69/0x210 [ 42.299604] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.304441] invalid_op+0x14/0x20 [ 42.307880] RIP: 0010:unlock_new_inode.cold+0x11/0x3f [ 42.313150] Code: ee e8 01 e9 b4 ff 48 c7 c7 00 0f 16 88 e8 24 64 9e ff 0f 0b e9 a7 76 ff ff e8 e9 e8 b4 ff 48 c7 c7 00 0f 16 88 e8 0c 64 9e ff <0f> 0b b8 ff ff 37 00 4c 89 e2 48 c1 ea 03 48 c1 e0 2a 80 3c 02 00 [ 42.332033] RSP: 0018:ffff8880a423f600 EFLAGS: 00010282 [ 42.337377] RAX: 0000000000000024 RBX: ffff8880807161a8 RCX: 0000000000000000 [ 42.344633] RDX: 0000000000000000 RSI: ffffffff815b523f RDI: ffffed1014847eb2 [ 42.351912] RBP: 0000000000000000 R08: 0000000000000024 R09: 0000000000000000 [ 42.359177] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888080716278 [ 42.366428] R13: ffff888080716230 R14: 0000000000000000 R15: 00000000fffffff4 [ 42.373693] ? vprintk_func+0x7f/0x224 [ 42.377575] reiserfs_new_inode+0x3b8/0x2150 [ 42.381979] ? find_held_lock+0x58/0x110 [ 42.386028] ? reiserfs_fh_to_parent+0x1b0/0x1b0 [ 42.390767] ? ww_mutex_unlock+0x2f0/0x2f0 [ 42.394996] ? do_journal_begin_r+0x298/0x10d0 [ 42.399565] ? ww_mutex_unlock+0x2f0/0x2f0 [ 42.403785] ? __mutex_unlock_slowpath+0xea/0x660 [ 42.408616] ? __mutex_add_waiter+0x160/0x160 [ 42.413096] ? __mutex_add_waiter+0x160/0x160 [ 42.417578] ? do_journal_begin_r+0xd24/0x10d0 [ 42.422186] ? security_old_inode_init_security+0xf4/0x130 [ 42.427802] reiserfs_mkdir+0x4ad/0x980 [ 42.431786] ? reiserfs_mknod+0x700/0x700 [ 42.435929] reiserfs_xattr_init+0x406/0xae0 [ 42.440336] reiserfs_fill_super+0x222a/0x2e60 [ 42.444921] ? reiserfs_remount+0x1640/0x1640 [ 42.449401] ? lock_downgrade+0x750/0x750 [ 42.453560] ? snprintf+0xbb/0xf0 [ 42.457016] ? __mutex_add_waiter+0x160/0x160 [ 42.461500] mount_bdev+0x2fc/0x3b0 [ 42.465109] ? reiserfs_remount+0x1640/0x1640 [ 42.469588] mount_fs+0xa3/0x318 [ 42.472944] vfs_kern_mount.part.0+0x68/0x470 [ 42.477428] do_mount+0x51c/0x2f10 [ 42.480952] ? do_raw_spin_unlock+0x171/0x240 [ 42.485431] ? check_preemption_disabled+0x41/0x2b0 [ 42.490430] ? copy_mount_string+0x40/0x40 [ 42.494665] ? kmem_cache_alloc_trace+0x379/0x4b0 [ 42.499492] ? copy_mount_options+0x261/0x370 [ 42.503974] ksys_mount+0xcf/0x130 [ 42.507497] __x64_sys_mount+0xba/0x150 [ 42.511455] ? lockdep_hardirqs_on+0x3c1/0x5e0 [ 42.516034] do_syscall_64+0xf9/0x670 [ 42.519820] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.524991] RIP: 0033:0x447dba [ 42.528164] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d a3 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 5a a3 fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 42.547051] RSP: 002b:00007ffdab7ba6c8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5 [ 42.554755] RAX: ffffffffffffffda RBX: 00007ffdab7ba720 RCX: 0000000000447dba [ 42.562024] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffdab7ba6e0 [ 42.569289] RBP: 00007ffdab7ba6e0 R08: 00007ffdab7ba720 R09: 0000000000000000 [ 42.576579] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000007 [ 42.583852] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003 [ 42.592544] Kernel Offset: disabled [ 42.596291] Rebooting in 86400 seconds..