Starting sshd: OK syzkaller syzkaller login: [ 14.760293][ T23] kauditd_printk_skb: 39 callbacks suppressed [ 14.760305][ T23] audit: type=1400 audit(1672459355.424:72): avc: denied { transition } for pid=2935 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.764891][ T23] audit: type=1400 audit(1672459355.424:73): avc: denied { write } for pid=2935 comm="sh" path="pipe:[15053]" dev="pipefs" ino=15053 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 15.610781][ T2938] scp (2938) used greatest stack depth: 11856 bytes left [ 15.620553][ T2936] sshd (2936) used greatest stack depth: 11504 bytes left Warning: Permanently added '10.128.0.122' (ECDSA) to the list of known hosts. 2022/12/31 04:02:42 fuzzer started 2022/12/31 04:02:42 dialing manager at 10.128.0.163:32819 [ 21.793846][ T23] audit: type=1400 audit(1672459362.454:74): avc: denied { mounton } for pid=3105 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=1136 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 21.794673][ T3105] cgroup: Unknown subsys name 'net' [ 21.816560][ T23] audit: type=1400 audit(1672459362.454:75): avc: denied { mount } for pid=3105 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 21.843897][ T23] audit: type=1400 audit(1672459362.484:76): avc: denied { unmount } for pid=3105 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 21.980706][ T3105] cgroup: Unknown subsys name 'rlimit' 2022/12/31 04:02:42 syscalls: 2806 2022/12/31 04:02:42 code coverage: enabled 2022/12/31 04:02:42 comparison tracing: enabled 2022/12/31 04:02:42 extra coverage: enabled 2022/12/31 04:02:42 delay kcov mmap: enabled 2022/12/31 04:02:42 setuid sandbox: enabled 2022/12/31 04:02:42 namespace sandbox: enabled 2022/12/31 04:02:42 Android sandbox: enabled 2022/12/31 04:02:42 fault injection: enabled 2022/12/31 04:02:42 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2022/12/31 04:02:42 net packet injection: enabled 2022/12/31 04:02:42 net device setup: enabled 2022/12/31 04:02:42 concurrency sanitizer: enabled 2022/12/31 04:02:42 devlink PCI setup: PCI device 0000:00:10.0 is not available 2022/12/31 04:02:42 NIC VF setup: PCI device 0000:00:11.0 is not available 2022/12/31 04:02:42 USB emulation: /dev/raw-gadget does not exist 2022/12/31 04:02:42 hci packet injection: /dev/vhci does not exist 2022/12/31 04:02:42 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 2022/12/31 04:02:42 802.15.4 emulation: enabled [ 22.100418][ T23] audit: type=1400 audit(1672459362.764:77): avc: denied { mounton } for pid=3105 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 22.125762][ T23] audit: type=1400 audit(1672459362.764:78): avc: denied { mount } for pid=3105 comm="syz-executor" name="/" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=filesystem permissive=1 2022/12/31 04:02:42 suppressing KCSAN reports in functions: '__fsnotify_parent' '__xa_clear_mark' '__xa_set_mark' 'jbd2_journal_commit_transaction' 'ext4_fill_raw_inode' 'generic_write_end' '__wb_update_bandwidth' 'io_wq_worker_running' 'fsnotify' 'dont_mount' 'n_tty_flush_buffer' 'dentry_unlink_inode' 'filemap_read' '__es_find_extent_range' 'ext4_do_writepages' 'drain_all_stock' 'wg_packet_send_staged_packets' 'can_receive' 'pcpu_alloc' '__percpu_counter_compare' 'ext4_mb_regular_allocator' 'macsec_handle_frame' 'exit_mm' 'generic_fillattr' 'blk_mq_sched_dispatch_requests' 'ext4_free_inodes_count' 'shmem_file_read_iter' 'xas_clear_mark' 'alloc_pid' 'do_select' 'do_sys_poll' '__mark_inode_dirty' 'ext4_mark_iloc_dirty' 'xas_find_marked' 'ext4_write_end' 'ext4_ext_try_to_merge_right' 'ext4_mb_good_group' 'mark_buffer_dirty_inode' 'can_send' 'tick_sched_timer' 'jbd2_journal_dirty_metadata' '__writeback_single_inode' [ 22.149173][ T23] audit: type=1400 audit(1672459362.764:79): avc: denied { create } for pid=3105 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.169599][ T23] audit: type=1400 audit(1672459362.764:80): avc: denied { write } for pid=3105 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 2022/12/31 04:02:42 fetching corpus: 0, signal 0/2000 (executing program) [ 22.189954][ T23] audit: type=1400 audit(1672459362.764:81): avc: denied { read } for pid=3105 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket 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1: [ 51.305544][ T0] tick_nohz_stop_tick+0xa0/0x400 [ 51.310560][ T0] tick_nohz_idle_stop_tick+0x174/0x2c0 [ 51.316095][ T0] do_idle+0x18a/0x250 [ 51.320140][ T0] cpu_startup_entry+0x15/0x20 [ 51.324881][ T0] start_secondary+0x78/0x80 2022/12/31 04:03:12 fetching corpus: 12950, signal 238152/415628 (executing program) [ 51.329453][ T0] secondary_startup_64_no_verify+0xcf/0xdb [ 51.335342][ T0] [ 51.337664][ T0] read to 0xffffffff85ed41b0 of 4 bytes by task 0 on cpu 0: [ 51.344936][ T0] tick_nohz_next_event+0x1ee/0x2c0 [ 51.350143][ T0] tick_nohz_get_sleep_length+0x15b/0x250 [ 51.355863][ T0] menu_select+0x347/0x1010 [ 51.360352][ T0] cpuidle_select+0x3d/0x50 [ 51.364848][ T0] do_idle+0x173/0x250 [ 51.368911][ T0] cpu_startup_entry+0x15/0x20 [ 51.373668][ T0] rest_init+0xe8/0xf0 [ 51.377717][ T0] arch_call_rest_init+0x5/0x10 [ 51.382567][ T0] start_kernel+0x59e/0x630 [ 51.387070][ T0] secondary_startup_64_no_verify+0xcf/0xdb [ 51.392957][ T0] [ 51.395259][ T0] value changed: 0x00000001 -> 0xffffffff [ 51.400952][ T0] [ 51.403260][ T0] Reported by Kernel Concurrency Sanitizer on: [ 51.409398][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.2.0-rc1-syzkaller-00068-gbff687b3dad6-dirty #0 [ 51.419547][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 2022/12/31 04:03:12 fetching corpus: 13000, signal 238464/415628 (executing program) [ 51.429583][ T0] ================================================================== 2022/12/31 04:03:12 fetching corpus: 13050, signal 238789/415628 (executing program) 2022/12/31 04:03:12 fetching corpus: 13100, signal 239121/415628 (executing program) 2022/12/31 04:03:12 fetching corpus: 13150, signal 239583/415628 (executing program) 2022/12/31 04:03:12 fetching corpus: 13200, signal 239882/415629 (executing program) 2022/12/31 04:03:12 fetching corpus: 13250, signal 240313/415634 (executing program) 2022/12/31 04:03:12 fetching corpus: 13300, signal 240544/415634 (executing program) 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