[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 123.700714][ T32] kauditd_printk_skb: 4 callbacks suppressed [ 123.700764][ T32] audit: type=1800 audit(1582638566.771:39): pid=11097 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 [ 123.745793][ T32] audit: type=1800 audit(1582638566.801:40): pid=11097 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 [ 124.811559][ T32] audit: type=1400 audit(1582638567.881:41): avc: denied { map } for pid=11274 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 [ 124.843791][T11274] bash (11274) used greatest stack depth: 3352 bytes left Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.110' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 133.392068][ T32] audit: type=1400 audit(1582638576.461:42): avc: denied { map } for pid=11286 comm="syz-executor297" path="/root/syz-executor297614324" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 133.423412][ T32] audit: type=1400 audit(1582638576.501:43): avc: denied { create } for pid=11287 comm="syz-executor297" 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 [ 133.448607][ T32] audit: type=1400 audit(1582638576.501:44): avc: denied { write } for pid=11287 comm="syz-executor297" 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 [ 133.478640][ T32] audit: type=1400 audit(1582638576.551:45): avc: denied { read } for pid=11287 comm="syz-executor297" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 137.283268][T11834] ===================================================== [ 137.290363][T11834] BUG: KMSAN: use-after-free in __list_add_valid+0x280/0x420 [ 137.297842][T11834] CPU: 1 PID: 11834 Comm: syz-executor297 Not tainted 5.6.0-rc2-syzkaller #0 [ 137.306596][T11834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 137.316637][T11834] Call Trace: [ 137.319927][T11834] dump_stack+0x1c9/0x220 [ 137.324250][T11834] kmsan_report+0xf7/0x1e0 [ 137.328682][T11834] __msan_warning+0x58/0xa0 [ 137.333195][T11834] __list_add_valid+0x280/0x420 [ 137.338068][T11834] rdma_listen+0x623/0x10b0 [ 137.342583][T11834] ? kmsan_set_origin_checked+0x95/0xf0 [ 137.348131][T11834] ? kmsan_get_metadata+0x11d/0x180 [ 137.353375][T11834] ucma_listen+0x36c/0x5e0 [ 137.357897][T11834] ? ucma_connect+0xa40/0xa40 [ 137.362564][T11834] ucma_write+0x5c5/0x630 [ 137.366887][T11834] ? ucma_get_global_nl_info+0xe0/0xe0 [ 137.372360][T11834] __vfs_write+0x1a9/0xca0 [ 137.376831][T11834] ? rw_verify_area+0x2c4/0x5b0 [ 137.381689][T11834] ? kmsan_get_metadata+0x11d/0x180 [ 137.386894][T11834] vfs_write+0x44a/0x8f0 [ 137.391187][T11834] ksys_write+0x267/0x450 [ 137.395520][T11834] __ia32_sys_write+0xdb/0x120 [ 137.400282][T11834] ? __se_sys_write+0xb0/0xb0 [ 137.404946][T11834] do_fast_syscall_32+0x3c7/0x6e0 [ 137.409972][T11834] entry_SYSENTER_compat+0x68/0x77 [ 137.415072][T11834] RIP: 0023:0xf7f46d99 [ 137.419144][T11834] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 137.439008][T11834] RSP: 002b:00000000f7f2012c EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 137.447409][T11834] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000140 [ 137.455375][T11834] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 [ 137.463354][T11834] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 137.471317][T11834] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 137.479760][T11834] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 137.487748][T11834] [ 137.490062][T11834] Uninit was created at: [ 137.494301][T11834] kmsan_internal_poison_shadow+0x66/0xd0 [ 137.500030][T11834] kmsan_slab_free+0x6e/0xb0 [ 137.504619][T11834] kfree+0x565/0x30a0 [ 137.508591][T11834] rdma_destroy_id+0x197e/0x1b40 [ 137.513525][T11834] ucma_close+0x334/0x4c0 [ 137.517849][T11834] __fput+0x4c7/0xb90 [ 137.521854][T11834] ____fput+0x37/0x40 [ 137.525840][T11834] task_work_run+0x214/0x2b0 [ 137.530435][T11834] do_exit+0xf72/0x38e0 [ 137.534667][T11834] do_group_exit+0x18a/0x320 [ 137.539457][T11834] get_signal+0xb73/0x32e0 [ 137.543912][T11834] do_signal+0x6f/0xe30 [ 137.548060][T11834] prepare_exit_to_usermode+0x2f0/0x520 [ 137.553595][T11834] syscall_return_slowpath+0x95/0x5f0 [ 137.559082][T11834] do_fast_syscall_32+0x422/0x6e0 [ 137.564350][T11834] entry_SYSENTER_compat+0x68/0x77 [ 137.569469][T11834] ===================================================== [ 137.576390][T11834] Disabling lock debugging due to kernel taint [ 137.582631][T11834] Kernel panic - not syncing: panic_on_warn set ... [ 137.589210][T11834] CPU: 1 PID: 11834 Comm: syz-executor297 Tainted: G B 5.6.0-rc2-syzkaller #0 [ 137.599347][T11834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 137.609403][T11834] Call Trace: [ 137.612691][T11834] dump_stack+0x1c9/0x220 [ 137.617016][T11834] panic+0x3d5/0xc3e [ 137.620922][T11834] kmsan_report+0x1df/0x1e0 [ 137.625420][T11834] __msan_warning+0x58/0xa0 [ 137.629955][T11834] __list_add_valid+0x280/0x420 [ 137.634831][T11834] rdma_listen+0x623/0x10b0 [ 137.639593][T11834] ? kmsan_set_origin_checked+0x95/0xf0 [ 137.645148][T11834] ? kmsan_get_metadata+0x11d/0x180 [ 137.650348][T11834] ucma_listen+0x36c/0x5e0 [ 137.654817][T11834] ? ucma_connect+0xa40/0xa40 [ 137.659539][T11834] ucma_write+0x5c5/0x630 [ 137.663876][T11834] ? ucma_get_global_nl_info+0xe0/0xe0 [ 137.669342][T11834] __vfs_write+0x1a9/0xca0 [ 137.673774][T11834] ? rw_verify_area+0x2c4/0x5b0 [ 137.678622][T11834] ? kmsan_get_metadata+0x11d/0x180 [ 137.684033][T11834] vfs_write+0x44a/0x8f0 [ 137.688288][T11834] ksys_write+0x267/0x450 [ 137.692620][T11834] __ia32_sys_write+0xdb/0x120 [ 137.697382][T11834] ? __se_sys_write+0xb0/0xb0 [ 137.702079][T11834] do_fast_syscall_32+0x3c7/0x6e0 [ 137.707109][T11834] entry_SYSENTER_compat+0x68/0x77 [ 137.712232][T11834] RIP: 0023:0xf7f46d99 [ 137.716293][T11834] Code: 90 e8 0b 00 00 00 f3 90 0f ae e8 eb f9 8d 74 26 00 89 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 137.737032][T11834] RSP: 002b:00000000f7f2012c EFLAGS: 00000246 ORIG_RAX: 0000000000000004 [ 137.745495][T11834] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000020000140 [ 137.753863][T11834] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 [ 137.761878][T11834] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 137.769915][T11834] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 137.777892][T11834] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 137.787257][T11834] Kernel Offset: 0x2ca00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 137.798905][T11834] Rebooting in 86400 seconds..