[ 33.652462] audit: type=1800 audit(1576540307.093:33): pid=6985 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 33.679847] audit: type=1800 audit(1576540307.093:34): pid=6985 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.807290] random: sshd: uninitialized urandom read (32 bytes read) [ 38.184145] audit: type=1400 audit(1576540311.623:35): avc: denied { map } for pid=7157 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 [ 38.284063] random: sshd: uninitialized urandom read (32 bytes read) [ 38.929123] random: sshd: uninitialized urandom read (32 bytes read) [ 39.151082] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.191' (ECDSA) to the list of known hosts. [ 44.797649] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 44.912707] audit: type=1400 audit(1576540318.353:36): avc: denied { map } for pid=7169 comm="syz-executor319" path="/root/syz-executor319615387" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 44.997339] BUG: unable to handle kernel paging request at 000000010000000e [ 44.997356] IP: insert_char+0x107/0x290 [ 44.997359] PGD 9be5a067 P4D 9be5a067 PUD 0 [ 44.997371] Oops: 0002 [#1] PREEMPT SMP KASAN [ 44.997376] Modules linked in: [ 44.997385] CPU: 1 PID: 7169 Comm: syz-executor319 Not tainted 4.14.158-syzkaller #0 [ 44.997388] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.997391] task: ffff88808e7fa640 task.stack: ffff8880a13b8000 [ 44.997396] RIP: 0010:insert_char+0x107/0x290 [ 44.997399] RSP: 0018:ffff8880a13bf838 EFLAGS: 00010202 [ 44.997404] RAX: 0000000000000720 RBX: 0000000000000001 RCX: 0000000000000001 [ 44.997407] RDX: 1ffff1101498caa1 RSI: 000000010000000e RDI: 000000010000000e [ 44.997410] RBP: ffff8880a13bf868 R08: ffff8880a4c6550c R09: 0000000000000002 [ 44.997414] R10: 0000000000000000 R11: ffff88808e7fa640 R12: ffff8880a4c65140 [ 44.997417] R13: ffff8880a4c654cc R14: ffff8880a4c65474 R15: 000000010000000e [ 44.997423] FS: 0000000000975880(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 [ 44.997435] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.997439] CR2: 000000010000000e CR3: 0000000090914000 CR4: 00000000001406e0 [ 44.997446] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.997449] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.997451] Call Trace: [ 44.997461] do_con_trol+0x35bd/0x5b40 [ 44.997468] ? reset_palette+0x180/0x180 [ 44.997481] ? __atomic_notifier_call_chain+0xc2/0x150 [ 44.997489] do_con_write.part.0+0xcc7/0x1b50 [ 44.997495] ? add_wait_queue+0x112/0x170 [ 44.997506] ? do_con_trol+0x5b40/0x5b40 [ 44.997516] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 44.997523] con_write+0x38/0xc0 [ 44.997532] n_tty_write+0x38b/0xee0 [ 44.997544] ? process_echoes+0x150/0x150 [ 44.997550] ? do_wait_intr_irq+0x2a0/0x2a0 [ 44.997558] ? kasan_check_write+0x14/0x20 [ 44.997566] ? _copy_from_user+0x99/0x110 [ 44.997573] tty_write+0x3f6/0x700 [ 44.997582] ? process_echoes+0x150/0x150 [ 44.997591] __vfs_write+0x105/0x6b0 [ 44.997597] ? tty_read+0x270/0x270 [ 44.997602] ? kernel_read+0x120/0x120 [ 44.997611] ? __inode_security_revalidate+0xd6/0x130 [ 44.997617] ? avc_policy_seqno+0x9/0x20 [ 44.997623] ? selinux_file_permission+0x85/0x480 [ 44.997632] ? security_file_permission+0x89/0x1f0 [ 44.997638] ? rw_verify_area+0xea/0x2b0 [ 44.997644] ? putname+0xe0/0x120 [ 44.997651] vfs_write+0x198/0x500 [ 44.997658] SyS_write+0xfd/0x230 [ 44.997663] ? SyS_read+0x230/0x230 [ 44.997670] ? do_syscall_64+0x53/0x640 [ 44.997676] ? SyS_read+0x230/0x230 [ 44.997683] do_syscall_64+0x1e8/0x640 [ 44.997689] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.997698] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 44.997703] RIP: 0033:0x4404f9 [ 44.997706] RSP: 002b:00007ffd19b72328 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 44.997713] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004404f9 [ 44.997717] RDX: 0000000000000078 RSI: 0000000020000000 RDI: 0000000000000004 [ 44.997721] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 44.997725] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401de0 [ 44.997729] R13: 0000000000401e70 R14: 0000000000000000 R15: 0000000000000000 [ 44.997736] Code: 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 01 0f 8e 3b 01 00 00 41 0f b7 84 24 c8 03 00 00 d1 eb 4c 89 ff 89 d9 66 ab 49 8d bc 24 78 04 00 00 48 b8 00 00 00 00 00 fc ff df [ 44.997836] RIP: insert_char+0x107/0x290 RSP: ffff8880a13bf838 [ 44.997838] CR2: 000000010000000e [ 44.997846] ---[ end trace 7d3d4e07c436daba ]--- [ 44.997850] Kernel panic - not syncing: Fatal exception [ 44.999560] Kernel Offset: disabled [ 45.356417] Rebooting in 86400 seconds..