[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[ 93.642630][ T27] audit: type=1400 audit(1577980645.124:37): avc: denied { watch } for pid=9802 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [ 93.666554][ T27] audit: type=1400 audit(1577980645.124:38): avc: denied { watch } for pid=9802 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [ 93.803868][ T27] audit: type=1800 audit(1577980645.284:39): pid=9715 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=2432 res=0 [ 93.825510][ T27] audit: type=1800 audit(1577980645.284:40): pid=9715 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=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 97.820132][ T27] audit: type=1400 audit(1577980649.294:41): avc: denied { map } for pid=9892 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 '10.128.0.165' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 506.649356][ T27] audit: type=1400 audit(1577981058.124:42): avc: denied { map } for pid=9904 comm="syz-executor316" path="/root/syz-executor316966133" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 539.933220][T14545] ================================================================== [ 539.933381][T14545] BUG: KASAN: use-after-free in n_tty_receive_buf_common+0x270f/0x2b70 [ 539.933394][T14545] Read of size 1 at addr ffff88809a028011 by task syz-executor316/14545 [ 539.933398][T14545] [ 539.933413][T14545] CPU: 1 PID: 14545 Comm: syz-executor316 Not tainted 5.5.0-rc4-syzkaller #0 [ 539.933422][T14545] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 539.933427][T14545] Call Trace: [ 539.933470][T14545] dump_stack+0x197/0x210 [ 539.933487][T14545] ? n_tty_receive_buf_common+0x270f/0x2b70 [ 539.933565][T14545] print_address_description.constprop.0.cold+0xd4/0x30b [ 539.933580][T14545] ? n_tty_receive_buf_common+0x270f/0x2b70 [ 539.933596][T14545] ? n_tty_receive_buf_common+0x270f/0x2b70 [ 539.933610][T14545] __kasan_report.cold+0x1b/0x41 [ 539.933629][T14545] ? n_tty_receive_buf_common+0x270f/0x2b70 [ 539.933646][T14545] kasan_report+0x12/0x20 [ 539.933662][T14545] __asan_report_load1_noabort+0x14/0x20 [ 539.933678][T14545] n_tty_receive_buf_common+0x270f/0x2b70 [ 539.933691][T14545] ? __kasan_check_read+0x11/0x20 [ 539.933728][T14545] n_tty_receive_buf2+0x34/0x40 [ 539.933746][T14545] tty_ldisc_receive_buf+0xad/0x1c0 [ 539.933781][T14545] ? add_wait_queue+0x112/0x170 [ 539.933796][T14545] ? n_tty_receive_buf_common+0x2b70/0x2b70 [ 539.933840][T14545] paste_selection+0x1ff/0x460 [ 539.933861][T14545] ? vcs_remove_sysfs+0x60/0x60 [ 539.933901][T14545] ? lock_downgrade+0x920/0x920 [ 539.933973][T14545] ? wake_up_q+0x140/0x140 executing program [ 539.934022][T14545] tioclinux+0x133/0x480 [ 539.934037][T14545] vt_ioctl+0x1a41/0x26d0 [ 539.934056][T14545] ? complete_change_console+0x3a0/0x3a0 [ 540.098202][T14545] ? lock_downgrade+0x920/0x920 [ 540.098217][T14545] ? rwlock_bug.part.0+0x90/0x90 [ 540.098295][T14545] ? tomoyo_path_number_perm+0x214/0x520 [ 540.113625][T14545] ? find_held_lock+0x35/0x130 [ 540.113641][T14545] ? tomoyo_path_number_perm+0x214/0x520 [ 540.113741][T14545] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 540.130135][T14545] ? tty_jobctrl_ioctl+0x50/0xd40 [ 540.130154][T14545] ? complete_change_console+0x3a0/0x3a0 [ 540.140848][T14545] tty_ioctl+0xa37/0x14f0 [ 540.140867][T14545] ? tty_vhangup+0x30/0x30 [ 540.149608][T14545] ? tomoyo_path_number_perm+0x454/0x520 [ 540.149634][T14545] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 540.161492][T14545] ? tomoyo_path_number_perm+0x25e/0x520 [ 540.161512][T14545] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 540.172947][T14545] ? ___might_sleep+0x163/0x2c0 [ 540.172967][T14545] ? tty_vhangup+0x30/0x30 [ 540.173066][T14545] do_vfs_ioctl+0x977/0x14e0 [ 540.173085][T14545] ? compat_ioctl_preallocate+0x220/0x220 [ 540.173148][T14545] ? selinux_file_mprotect+0x620/0x620 [ 540.173167][T14545] ? kmem_cache_free+0x26b/0x320 [ 540.203038][T14545] ? putname+0xf4/0x130 [ 540.203113][T14545] ? do_sys_open+0x31d/0x5d0 [ 540.211799][T14545] ? tomoyo_file_ioctl+0x23/0x30 [ 540.211818][T14545] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 540.211873][T14545] ? security_file_ioctl+0x8d/0xc0 [ 540.211893][T14545] ksys_ioctl+0xab/0xd0 [ 540.211909][T14545] __x64_sys_ioctl+0x73/0xb0 [ 540.211964][T14545] do_syscall_64+0xfa/0x790 [ 540.241508][T14545] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 540.241525][T14545] RIP: 0033:0x441409 [ 540.251493][T14545] Code: e8 ac e8 ff ff 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 540.251500][T14545] RSP: 002b:00007fff8b2cad38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 540.280660][T14545] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441409 [ 540.280668][T14545] RDX: 0000000020000100 RSI: 000000000000541c RDI: 0000000000000004 [ 540.280683][T14545] RBP: 0000000000083cc3 R08: 000000000000000e R09: 00000000004002c8 [ 540.304568][T14545] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402180 [ 540.304582][T14545] R13: 0000000000402210 R14: 0000000000000000 R15: 0000000000000000 [ 540.322091][T14545] [ 540.322101][T14545] Allocated by task 14539: [ 540.322119][T14545] save_stack+0x23/0x90 [ 540.322131][T14545] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 540.322143][T14545] kasan_kmalloc+0x9/0x10 [ 540.322153][T14545] __kmalloc+0x163/0x770 [ 540.322166][T14545] set_selection_kernel+0x872/0x13b0 [ 540.322184][T14545] set_selection_user+0x95/0xd9 [ 540.322200][T14545] tioclinux+0x11c/0x480 [ 540.322211][T14545] vt_ioctl+0x1a41/0x26d0 [ 540.322225][T14545] tty_ioctl+0xa37/0x14f0 [ 540.322238][T14545] do_vfs_ioctl+0x977/0x14e0 [ 540.322250][T14545] ksys_ioctl+0xab/0xd0 [ 540.322260][T14545] __x64_sys_ioctl+0x73/0xb0 [ 540.322273][T14545] do_syscall_64+0xfa/0x790 [ 540.322289][T14545] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 540.322292][T14545] [ 540.322298][T14545] Freed by task 14540: [ 540.322309][T14545] save_stack+0x23/0x90 [ 540.322320][T14545] __kasan_slab_free+0x102/0x150 [ 540.322331][T14545] kasan_slab_free+0xe/0x10 [ 540.322341][T14545] kfree+0x10a/0x2c0 [ 540.322352][T14545] set_selection_kernel+0x88f/0x13b0 [ 540.322363][T14545] set_selection_user+0x95/0xd9 [ 540.322377][T14545] tioclinux+0x11c/0x480 [ 540.322389][T14545] vt_ioctl+0x1a41/0x26d0 [ 540.322400][T14545] tty_ioctl+0xa37/0x14f0 [ 540.322411][T14545] do_vfs_ioctl+0x977/0x14e0 [ 540.322422][T14545] ksys_ioctl+0xab/0xd0 [ 540.322433][T14545] __x64_sys_ioctl+0x73/0xb0 [ 540.322447][T14545] do_syscall_64+0xfa/0x790 [ 540.322460][T14545] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 540.322463][T14545] [ 540.322474][T14545] The buggy address belongs to the object at ffff88809a028000 [ 540.322474][T14545] which belongs to the cache kmalloc-8k of size 8192 [ 540.322486][T14545] The buggy address is located 17 bytes inside of [ 540.322486][T14545] 8192-byte region [ffff88809a028000, ffff88809a02a000) [ 540.322491][T14545] The buggy address belongs to the page: [ 540.322507][T14545] page:ffffea0002680a00 refcount:1 mapcount:0 mapping:ffff8880aa4021c0 index:0x0 compound_mapcount: 0 [ 540.322527][T14545] raw: 00fffe0000010200 ffffea00029a1708 ffffea0002810908 ffff8880aa4021c0 [ 540.322543][T14545] raw: 0000000000000000 ffff88809a028000 0000000100000001 0000000000000000 [ 540.322549][T14545] page dumped because: kasan: bad access detected [ 540.322552][T14545] [ 540.322557][T14545] Memory state around the buggy address: [ 540.322568][T14545] ffff88809a027f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 540.322578][T14545] ffff88809a027f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 540.322589][T14545] >ffff88809a028000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 540.322594][T14545] ^ [ 540.322604][T14545] ffff88809a028080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 540.322615][T14545] ffff88809a028100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 540.322620][T14545] ================================================================== [ 540.322624][T14545] Disabling lock debugging due to kernel taint [ 540.324050][T14545] Kernel panic - not syncing: panic_on_warn set ... [ 540.324066][T14545] CPU: 1 PID: 14545 Comm: syz-executor316 Tainted: G B 5.5.0-rc4-syzkaller #0 [ 540.324073][T14545] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 540.324077][T14545] Call Trace: [ 540.324094][T14545] dump_stack+0x197/0x210 [ 540.324198][T14545] panic+0x2e3/0x75c [ 540.324211][T14545] ? add_taint.cold+0x16/0x16 [ 540.324228][T14545] ? n_tty_receive_buf_common+0x270f/0x2b70 [ 540.324274][T14545] ? preempt_schedule+0x4b/0x60 [ 540.324289][T14545] ? ___preempt_schedule+0x16/0x18 [ 540.324352][T14545] ? trace_hardirqs_on+0x5e/0x240 [ 540.324370][T14545] ? n_tty_receive_buf_common+0x270f/0x2b70 [ 540.324384][T14545] end_report+0x47/0x4f [ 540.324399][T14545] ? n_tty_receive_buf_common+0x270f/0x2b70 [ 540.324412][T14545] __kasan_report.cold+0xe/0x41 [ 540.324428][T14545] ? n_tty_receive_buf_common+0x270f/0x2b70 [ 540.324441][T14545] kasan_report+0x12/0x20 [ 540.324455][T14545] __asan_report_load1_noabort+0x14/0x20 [ 540.324469][T14545] n_tty_receive_buf_common+0x270f/0x2b70 [ 540.324481][T14545] ? __kasan_check_read+0x11/0x20 [ 540.324510][T14545] n_tty_receive_buf2+0x34/0x40 [ 540.324528][T14545] tty_ldisc_receive_buf+0xad/0x1c0 [ 540.324541][T14545] ? add_wait_queue+0x112/0x170 [ 540.324555][T14545] ? n_tty_receive_buf_common+0x2b70/0x2b70 [ 540.324568][T14545] paste_selection+0x1ff/0x460 [ 540.324581][T14545] ? vcs_remove_sysfs+0x60/0x60 [ 540.324593][T14545] ? lock_downgrade+0x920/0x920 [ 540.324608][T14545] ? wake_up_q+0x140/0x140 [ 540.324628][T14545] tioclinux+0x133/0x480 [ 540.324640][T14545] vt_ioctl+0x1a41/0x26d0 [ 540.324654][T14545] ? complete_change_console+0x3a0/0x3a0 [ 540.324666][T14545] ? lock_downgrade+0x920/0x920 [ 540.324681][T14545] ? rwlock_bug.part.0+0x90/0x90 [ 540.324695][T14545] ? tomoyo_path_number_perm+0x214/0x520 [ 540.324707][T14545] ? find_held_lock+0x35/0x130 [ 540.324720][T14545] ? tomoyo_path_number_perm+0x214/0x520 [ 540.324735][T14545] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 540.324748][T14545] ? tty_jobctrl_ioctl+0x50/0xd40 [ 540.324760][T14545] ? complete_change_console+0x3a0/0x3a0 [ 540.324773][T14545] tty_ioctl+0xa37/0x14f0 [ 540.324787][T14545] ? tty_vhangup+0x30/0x30 [ 540.324801][T14545] ? tomoyo_path_number_perm+0x454/0x520 [ 540.324818][T14545] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 540.324832][T14545] ? tomoyo_path_number_perm+0x25e/0x520 [ 540.324846][T14545] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 540.324863][T14545] ? ___might_sleep+0x163/0x2c0 [ 540.324879][T14545] ? tty_vhangup+0x30/0x30 [ 540.324892][T14545] do_vfs_ioctl+0x977/0x14e0 [ 540.324906][T14545] ? compat_ioctl_preallocate+0x220/0x220 [ 540.324919][T14545] ? selinux_file_mprotect+0x620/0x620 [ 540.324932][T14545] ? kmem_cache_free+0x26b/0x320 [ 540.324948][T14545] ? putname+0xf4/0x130 [ 540.324962][T14545] ? do_sys_open+0x31d/0x5d0 [ 540.324979][T14545] ? tomoyo_file_ioctl+0x23/0x30 [ 540.324993][T14545] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 540.325005][T14545] ? security_file_ioctl+0x8d/0xc0 [ 540.325018][T14545] ksys_ioctl+0xab/0xd0 [ 540.325032][T14545] __x64_sys_ioctl+0x73/0xb0 [ 540.325046][T14545] do_syscall_64+0xfa/0x790 [ 540.325061][T14545] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 540.325071][T14545] RIP: 0033:0x441409 [ 540.325087][T14545] Code: e8 ac e8 ff ff 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 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 540.325094][T14545] RSP: 002b:00007fff8b2cad38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 540.325107][T14545] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441409 [ 540.325115][T14545] RDX: 0000000020000100 RSI: 000000000000541c RDI: 0000000000000004 [ 540.325122][T14545] RBP: 0000000000083cc3 R08: 000000000000000e R09: 00000000004002c8 [ 540.325129][T14545] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402180 [ 540.325135][T14545] R13: 0000000000402210 R14: 0000000000000000 R15: 0000000000000000 [ 540.326555][T14545] Kernel Offset: disabled