[ 38.921571] install (5801) used greatest stack depth: 16728 bytes left [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 45.185690] kauditd_printk_skb: 9 callbacks suppressed [ 45.185704] audit: type=1400 audit(1539255312.729:35): avc: denied { map } for pid=5894 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.119' (ECDSA) to the list of known hosts. executing program [ 51.769430] audit: type=1400 audit(1539255319.319:36): avc: denied { map } for pid=5906 comm="syz-executor149" path="/root/syz-executor149541764" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 51.773871] kasan: CONFIG_KASAN_INLINE enabled [ 51.800998] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.808394] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 51.814625] CPU: 1 PID: 5906 Comm: syz-executor149 Not tainted 4.19.0-rc7+ #57 [ 51.821962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.831354] RIP: 0010:rb_erase+0x306/0x3710 [ 51.835664] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 [ 51.854552] RSP: 0018:ffff8801b9ec6918 EFLAGS: 00010202 [ 51.859896] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 51.867162] RDX: 1ffff100373d8d2b RSI: ffffffff8afbc8a0 RDI: 0000000000000008 [ 51.874429] RBP: ffff8801b9ec7320 R08: dffffc0000000000 R09: fffffbfff12d69b0 [ 51.881681] R10: fffffbfff12d69b0 R11: ffffffff896b4d83 R12: ffff8801b832b430 [ 51.888932] R13: dffffc0000000000 R14: ffff8801b9ec72f8 R15: ffff8801b9ec7438 [ 51.896184] FS: 0000000000cf3880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 51.904389] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.910266] CR2: 0000000020000080 CR3: 00000001ce293000 CR4: 00000000001406e0 [ 51.917527] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.924780] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.932041] Call Trace: [ 51.934620] ? rb_insert_color+0x1460/0x1460 [ 51.939019] ? add_to_page_cache_lru+0x10b0/0x10b0 [ 51.943954] ? mark_held_locks+0x130/0x130 [ 51.948180] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 51.954135] ? mark_held_locks+0x130/0x130 [ 51.958389] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 51.963673] ? mark_held_locks+0x130/0x130 [ 51.967894] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.973417] ? mark_held_locks+0x130/0x130 [ 51.977634] ? mark_page_accessed+0xcb0/0x2040 [ 51.982219] ? activate_page+0x1040/0x1040 [ 51.986436] ? activate_page+0x1040/0x1040 [ 51.990670] ? pagecache_get_page+0x2d8/0xf00 [ 51.995159] ? find_get_pages_contig+0x15b0/0x15b0 [ 52.000074] ? lock_downgrade+0x900/0x900 [ 52.004208] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 52.009999] ? mark_held_locks+0x130/0x130 [ 52.014218] ? depot_save_stack+0x292/0x470 [ 52.018528] ? mark_held_locks+0x130/0x130 [ 52.022746] ? ext4_discard_preallocations+0x9b9/0x13c0 [ 52.028113] ? lock_downgrade+0x900/0x900 [ 52.032247] ? kasan_check_read+0x11/0x20 [ 52.036421] ? do_raw_spin_unlock+0xa7/0x2f0 [ 52.040815] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 52.045381] ? mark_held_locks+0x130/0x130 [ 52.049600] ? _raw_spin_unlock+0x2c/0x50 [ 52.053733] ? ext4_discard_preallocations+0x18a/0x13c0 [ 52.059083] ? trace_hardirqs_on+0xbd/0x310 [ 52.063390] ? ext4_exit_mballoc+0xc0/0xc0 [ 52.067628] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 52.072647] ? bpf_prog_kallsyms_find+0xde/0x4a0 [ 52.077387] ? modules_open+0xa0/0xa0 [ 52.081173] ? __es_tree_search.isra.12+0x1ba/0x220 [ 52.086177] ? __es_remove_extent+0x9a3/0xba0 [ 52.090659] ? mark_held_locks+0x130/0x130 [ 52.094877] ? lock_downgrade+0x900/0x900 [ 52.099018] ? ext4_es_scan+0x960/0x960 [ 52.102983] ? lock_release+0x970/0x970 [ 52.106941] ? trace_hardirqs_on+0xbd/0x310 [ 52.111260] ? kasan_check_read+0x11/0x20 [ 52.115392] ? clear_inode+0x114/0x3a0 [ 52.119265] ? do_raw_write_trylock+0x1c0/0x1c0 [ 52.123914] ? kasan_check_write+0x14/0x20 [ 52.128130] ? lock_acquire+0x1ed/0x520 [ 52.132090] ? integrity_inode_free+0x77/0x320 [ 52.136659] ? ext4_es_remove_extent+0x151/0x500 [ 52.141407] ? lock_release+0x970/0x970 [ 52.145368] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 52.150464] ? depot_save_stack+0x292/0x470 [ 52.154778] ? kasan_check_write+0x14/0x20 [ 52.159020] ? do_raw_write_lock+0xbd/0x1b0 [ 52.163331] integrity_inode_free+0x12f/0x320 [ 52.167824] security_inode_free+0x19/0x90 [ 52.172046] __destroy_inode+0x328/0x820 [ 52.176090] ? generic_update_time+0x450/0x450 [ 52.180654] ? evict+0x5d8/0x980 [ 52.184009] ? lock_downgrade+0x900/0x900 [ 52.188138] ? __inode_wait_for_writeback+0x2cf/0x380 [ 52.193317] destroy_inode+0xda/0x200 [ 52.197106] ? __destroy_inode+0x820/0x820 [ 52.201323] ? kasan_check_write+0x14/0x20 [ 52.205542] ? do_raw_spin_lock+0xc1/0x200 [ 52.209762] evict+0x5e0/0x980 [ 52.212956] ? jbd2_journal_stop+0x430/0x15d0 [ 52.217457] ? destroy_inode+0x200/0x200 [ 52.221508] ? do_raw_spin_lock+0xc1/0x200 [ 52.225732] ? iput+0x671/0xa90 [ 52.229008] ? lock_downgrade+0x900/0x900 [ 52.233157] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 52.238686] ? kasan_check_read+0x11/0x20 [ 52.242823] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 52.247402] ? lock_downgrade+0x900/0x900 [ 52.251536] ? ext4_ioctl+0x231b/0x4210 [ 52.255514] iput+0x679/0xa90 [ 52.258621] ? inode_add_lru+0x2a0/0x2a0 [ 52.262667] ? up_write+0x7b/0x220 [ 52.266208] ? up_read+0x110/0x110 [ 52.269731] ? up_read+0x110/0x110 [ 52.273260] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.278784] ? check_preemption_disabled+0x48/0x200 [ 52.283790] ext4_ioctl+0x236f/0x4210 [ 52.287574] ? ext4_ioctl_group_add+0x560/0x560 [ 52.292232] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 52.298024] ? kasan_check_read+0x11/0x20 [ 52.302159] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 52.307418] ? unwind_dump+0x190/0x190 [ 52.311297] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.316817] ? avc_has_extended_perms+0xab2/0x15a0 [ 52.321748] ? fpu__prepare_read+0x17/0x750 [ 52.326055] ? avc_ss_reset+0x190/0x190 [ 52.330015] ? save_stack+0xa9/0xd0 [ 52.333623] ? save_stack+0x43/0xd0 [ 52.337228] ? __kasan_slab_free+0x102/0x150 [ 52.341618] ? kasan_slab_free+0xe/0x10 [ 52.345576] ? kmem_cache_free+0x83/0x290 [ 52.349707] ? putname+0xf2/0x130 [ 52.353140] ? do_sys_open+0x54d/0x700 [ 52.357011] ? __x64_sys_openat+0x9d/0x100 [ 52.361229] ? do_syscall_64+0x1b9/0x820 [ 52.365271] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.370622] ? trace_hardirqs_off+0xb8/0x310 [ 52.375029] ? kasan_check_read+0x11/0x20 [ 52.379168] ? do_raw_spin_unlock+0xa7/0x2f0 [ 52.383560] ? ___might_sleep+0x1ed/0x300 [ 52.387687] ? arch_local_save_flags+0x40/0x40 [ 52.392249] ? kasan_check_write+0x14/0x20 [ 52.396466] ? trace_hardirqs_off+0xb8/0x310 [ 52.400859] ? ext4_ioctl_group_add+0x560/0x560 [ 52.405515] do_vfs_ioctl+0x1de/0x1720 [ 52.409388] ? ioctl_preallocate+0x300/0x300 [ 52.413794] ? selinux_file_mprotect+0x620/0x620 [ 52.418535] ? putname+0xf2/0x130 [ 52.421971] ? kmem_cache_free+0x21a/0x290 [ 52.426457] ? putname+0xf7/0x130 [ 52.429903] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.435438] ? security_file_ioctl+0x94/0xc0 [ 52.439835] ksys_ioctl+0xa9/0xd0 [ 52.443270] __x64_sys_ioctl+0x73/0xb0 [ 52.447142] do_syscall_64+0x1b9/0x820 [ 52.451015] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 52.456364] ? syscall_return_slowpath+0x5e0/0x5e0 [ 52.461278] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.466108] ? trace_hardirqs_on_caller+0x310/0x310 [ 52.471114] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 52.476118] ? prepare_exit_to_usermode+0x291/0x3b0 [ 52.481119] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.485949] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.491121] RIP: 0033:0x440009 [ 52.494298] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 52.513218] RSP: 002b:00007ffd11d5a8f8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 52.520919] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 52.528192] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 52.535463] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 52.542723] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 52.549994] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 52.557268] Modules linked in: [ 52.560590] ---[ end trace e2bac9e5cbb6163c ]--- [ 52.565387] RIP: 0010:rb_erase+0x306/0x3710 [ 52.569829] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 [ 52.588893] RSP: 0018:ffff8801b9ec6918 EFLAGS: 00010202 [ 52.594308] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 52.601594] RDX: 1ffff100373d8d2b RSI: ffffffff8afbc8a0 RDI: 0000000000000008 [ 52.608880] RBP: ffff8801b9ec7320 R08: dffffc0000000000 R09: fffffbfff12d69b0 [ 52.616139] R10: fffffbfff12d69b0 R11: ffffffff896b4d83 R12: ffff8801b832b430 [ 52.623422] R13: dffffc0000000000 R14: ffff8801b9ec72f8 R15: ffff8801b9ec7438 [ 52.630708] FS: 0000000000cf3880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 52.638954] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.644842] CR2: 0000000020000080 CR3: 00000001ce293000 CR4: 00000000001406e0 [ 52.652138] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.659424] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.666681] Kernel panic - not syncing: Fatal exception [ 52.672950] Kernel Offset: disabled [ 52.676579] Rebooting in 86400 seconds..