[ 39.725341] audit: type=1800 audit(1575494641.684:32): pid=7488 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 [ 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. [ 40.502707] audit: type=1800 audit(1575494642.504:33): pid=7488 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.22' (ECDSA) to the list of known hosts. syzkaller login: [ 1514.472439] kauditd_printk_skb: 2 callbacks suppressed [ 1514.472453] audit: type=1400 audit(1575496116.474:36): avc: denied { map } for pid=7676 comm="syz-executor617" path="/root/syz-executor617944511" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 1514.513749] IPVS: ftp: loaded support on port[0] = 21 [ 1514.539554] audit: type=1400 audit(1575496116.534:37): avc: denied { create } for pid=7677 comm="syz-executor617" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 executing program [ 1514.566263] audit: type=1400 audit(1575496116.534:38): avc: denied { write } for pid=7677 comm="syz-executor617" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 1514.591956] audit: type=1400 audit(1575496116.534:39): avc: denied { read } for pid=7677 comm="syz-executor617" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 1514.616176] audit: type=1400 audit(1575496116.574:40): avc: denied { associate } for pid=7677 comm="syz-executor617" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 1690.320818] ================================================================== [ 1690.320919] BUG: KASAN: global-out-of-bounds in bit_putcs+0xd5d/0xf10 [ 1690.320927] Read of size 1 at addr ffffffff87ecaea0 by task syz-executor617/16508 [ 1690.320929] [ 1690.320940] CPU: 0 PID: 16508 Comm: syz-executor617 Not tainted 4.19.87-syzkaller #0 [ 1690.320945] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1690.320948] Call Trace: [ 1690.320982] dump_stack+0x197/0x210 [ 1690.320991] ? bit_putcs+0xd5d/0xf10 [ 1690.321003] print_address_description.cold+0x5/0x20d [ 1690.321012] ? bit_putcs+0xd5d/0xf10 [ 1690.321020] kasan_report.cold+0x8c/0x2ba [ 1690.321031] __asan_report_load1_noabort+0x14/0x20 [ 1690.321038] bit_putcs+0xd5d/0xf10 [ 1690.321055] ? bit_cursor+0x1a60/0x1a60 [ 1690.321066] ? __sanitizer_cov_trace_cmp1+0x1/0x20 [ 1690.321088] ? fb_get_color_depth.part.0+0xcf/0x200 [ 1690.321099] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 1690.321109] fbcon_putcs+0x42b/0x4f0 [ 1690.321118] ? bit_cursor+0x1a60/0x1a60 [ 1690.321125] ? con2fb_acquire_newinfo+0x320/0x320 [ 1690.321150] do_con_write.part.0+0xfb1/0x1eb0 [ 1690.321168] ? do_con_trol+0x6070/0x6070 [ 1690.321189] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 1690.321198] ? add_wait_queue+0x112/0x170 [ 1690.321205] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 1690.321223] con_write+0x46/0xd0 [ 1690.321246] n_tty_write+0x3f9/0x10f0 [ 1690.321267] ? process_echoes+0x170/0x170 [ 1690.321282] ? do_wait_intr_irq+0x2b0/0x2b0 [ 1690.321298] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1690.321312] ? _copy_from_user+0xdd/0x150 [ 1690.321348] tty_write+0x458/0x7a0 [ 1690.321361] ? process_echoes+0x170/0x170 [ 1690.321372] __vfs_write+0x114/0x810 [ 1690.321381] ? tty_read+0x2a0/0x2a0 [ 1690.321389] ? kernel_read+0x120/0x120 [ 1690.321397] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 1690.321406] ? __inode_security_revalidate+0xda/0x120 [ 1690.321416] ? avc_policy_seqno+0xd/0x70 [ 1690.321423] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1690.321431] ? selinux_file_permission+0x92/0x550 [ 1690.321441] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1690.321449] ? security_file_permission+0x89/0x230 [ 1690.321458] ? rw_verify_area+0x118/0x360 [ 1690.321467] vfs_write+0x20c/0x560 [ 1690.321478] ksys_write+0x14f/0x2d0 [ 1690.321487] ? __ia32_sys_read+0xb0/0xb0 [ 1690.321498] ? do_syscall_64+0x26/0x620 [ 1690.321505] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1690.321512] ? do_syscall_64+0x26/0x620 [ 1690.321523] __x64_sys_write+0x73/0xb0 [ 1690.321532] do_syscall_64+0xfd/0x620 [ 1690.321542] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1690.321550] RIP: 0033:0x448349 [ 1690.321558] Code: e8 4c 15 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 cb 05 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1690.321563] RSP: 002b:00007f1127d83ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1690.321572] RAX: ffffffffffffffda RBX: 00000000006dec68 RCX: 0000000000448349 [ 1690.321577] RDX: 0000000000800000 RSI: 0000000020000000 RDI: 0000000000000004 [ 1690.321581] RBP: 00000000006dec60 R08: 00007f1127d84700 R09: 0000000000000000 [ 1690.321586] R10: 00007f1127d84700 R11: 0000000000000246 R12: 00000000006dec6c [ 1690.321590] R13: 00007ffd67765a0f R14: 00007f1127d849c0 R15: 0000000000000003 [ 1690.321601] [ 1690.321603] The buggy address belongs to the variable: [ 1690.321635] str__msr__trace_system_name+0x140/0x940 [ 1690.321638] [ 1690.321640] Memory state around the buggy address: [ 1690.321648] ffffffff87ecad80: fa fa fa fa 00 00 01 fa fa fa fa fa 04 fa fa fa [ 1690.321653] ffffffff87ecae00: fa fa fa fa 00 00 00 00 06 fa fa fa fa fa fa fa [ 1690.321659] >ffffffff87ecae80: 00 00 00 fa fa fa fa fa 00 00 00 fa fa fa fa fa [ 1690.321662] ^ [ 1690.321668] ffffffff87ecaf00: 00 00 00 03 fa fa fa fa 00 00 00 04 fa fa fa fa [ 1690.321674] ffffffff87ecaf80: 00 00 00 00 03 fa fa fa fa fa fa fa 00 00 07 fa [ 1690.321676] ================================================================== [ 1690.321680] Disabling lock debugging due to kernel taint [ 1690.321685] Kernel panic - not syncing: panic_on_warn set ... [ 1690.321685] [ 1690.321693] CPU: 0 PID: 16508 Comm: syz-executor617 Tainted: G B 4.19.87-syzkaller #0 [ 1690.321697] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1690.321699] Call Trace: [ 1690.321707] dump_stack+0x197/0x210 [ 1690.321719] ? bit_putcs+0xd5d/0xf10 [ 1690.321725] panic+0x26a/0x50e [ 1690.321732] ? __warn_printk+0xf3/0xf3 [ 1690.321741] ? lock_downgrade+0x880/0x880 [ 1690.321750] ? trace_hardirqs_on+0x67/0x220 [ 1690.321756] ? trace_hardirqs_on+0x5e/0x220 [ 1690.321764] ? bit_putcs+0xd5d/0xf10 [ 1690.321771] kasan_end_report+0x47/0x4f [ 1690.321778] kasan_report.cold+0xa9/0x2ba [ 1690.321787] __asan_report_load1_noabort+0x14/0x20 [ 1690.321794] bit_putcs+0xd5d/0xf10 [ 1690.321806] ? bit_cursor+0x1a60/0x1a60 [ 1690.321814] ? __sanitizer_cov_trace_cmp1+0x1/0x20 [ 1690.321821] ? fb_get_color_depth.part.0+0xcf/0x200 [ 1690.321830] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 1690.321837] fbcon_putcs+0x42b/0x4f0 [ 1690.321845] ? bit_cursor+0x1a60/0x1a60 [ 1690.321851] ? con2fb_acquire_newinfo+0x320/0x320 [ 1690.321859] do_con_write.part.0+0xfb1/0x1eb0 [ 1690.321871] ? do_con_trol+0x6070/0x6070 [ 1690.321878] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 1690.321885] ? add_wait_queue+0x112/0x170 [ 1690.321892] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 1690.321902] con_write+0x46/0xd0 [ 1690.321909] n_tty_write+0x3f9/0x10f0 [ 1690.321919] ? process_echoes+0x170/0x170 [ 1690.321927] ? do_wait_intr_irq+0x2b0/0x2b0 [ 1690.321935] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1690.321943] ? _copy_from_user+0xdd/0x150 [ 1690.321951] tty_write+0x458/0x7a0 [ 1690.321959] ? process_echoes+0x170/0x170 [ 1690.321967] __vfs_write+0x114/0x810 [ 1690.321974] ? tty_read+0x2a0/0x2a0 [ 1690.321981] ? kernel_read+0x120/0x120 [ 1690.321988] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 1690.321995] ? __inode_security_revalidate+0xda/0x120 [ 1690.322002] ? avc_policy_seqno+0xd/0x70 [ 1690.322009] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1690.322016] ? selinux_file_permission+0x92/0x550 [ 1690.322024] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1690.322031] ? security_file_permission+0x89/0x230 [ 1690.322038] ? rw_verify_area+0x118/0x360 [ 1690.322046] vfs_write+0x20c/0x560 [ 1690.322054] ksys_write+0x14f/0x2d0 [ 1690.322062] ? __ia32_sys_read+0xb0/0xb0 [ 1690.322069] ? do_syscall_64+0x26/0x620 [ 1690.322076] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1690.322083] ? do_syscall_64+0x26/0x620 [ 1690.322091] __x64_sys_write+0x73/0xb0 [ 1690.322099] do_syscall_64+0xfd/0x620 [ 1690.322107] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1690.322112] RIP: 0033:0x448349 [ 1690.322118] Code: e8 4c 15 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 cb 05 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1690.322122] RSP: 002b:00007f1127d83ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1690.322128] RAX: ffffffffffffffda RBX: 00000000006dec68 RCX: 0000000000448349 [ 1690.322132] RDX: 0000000000800000 RSI: 0000000020000000 RDI: 0000000000000004 [ 1690.322136] RBP: 00000000006dec60 R08: 00007f1127d84700 R09: 0000000000000000 [ 1690.322140] R10: 00007f1127d84700 R11: 0000000000000246 R12: 00000000006dec6c [ 1690.322144] R13: 00007ffd67765a0f R14: 00007f1127d849c0 R15: 0000000000000003 [ 1690.323422] Kernel Offset: disabled [ 1691.028368] Rebooting in 86400 seconds..