Starting sshd: OK syzkaller syzkaller login: [ 15.031055][ T23] kauditd_printk_skb: 38 callbacks suppressed [ 15.031068][ T23] audit: type=1400 audit(1672695109.519:72): avc: denied { transition } for pid=2934 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 [ 15.035029][ T23] audit: type=1400 audit(1672695109.519:73): avc: denied { write } for pid=2934 comm="sh" path="pipe:[11192]" dev="pipefs" ino=11192 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 16.108669][ T2937] scp (2937) used greatest stack depth: 11856 bytes left [ 16.118185][ T2935] sshd (2935) used greatest stack depth: 11368 bytes left Warning: Permanently added '10.128.0.155' (ECDSA) to the list of known hosts. 2023/01/02 21:31:56 fuzzer started 2023/01/02 21:31:56 dialing manager at 10.128.0.163:32789 [ 22.424501][ T23] audit: type=1400 audit(1672695116.909:74): avc: denied { mounton } for pid=3103 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 [ 22.425352][ T3103] cgroup: Unknown subsys name 'net' [ 22.447279][ T23] audit: type=1400 audit(1672695116.909:75): avc: denied { mount } for pid=3103 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 [ 22.474545][ T23] audit: type=1400 audit(1672695116.949:76): avc: denied { unmount } for pid=3103 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 22.619574][ T3103] cgroup: Unknown subsys name 'rlimit' 2023/01/02 21:31:57 syscalls: 2806 2023/01/02 21:31:57 code coverage: enabled 2023/01/02 21:31:57 comparison tracing: enabled 2023/01/02 21:31:57 extra coverage: enabled 2023/01/02 21:31:57 delay kcov mmap: enabled 2023/01/02 21:31:57 setuid sandbox: enabled 2023/01/02 21:31:57 namespace sandbox: enabled 2023/01/02 21:31:57 Android sandbox: enabled 2023/01/02 21:31:57 fault injection: enabled 2023/01/02 21:31:57 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2023/01/02 21:31:57 net packet injection: enabled 2023/01/02 21:31:57 net device setup: enabled 2023/01/02 21:31:57 concurrency sanitizer: enabled 2023/01/02 21:31:57 devlink PCI setup: PCI device 0000:00:10.0 is not available 2023/01/02 21:31:57 NIC VF setup: PCI device 0000:00:11.0 is not available 2023/01/02 21:31:57 USB emulation: /dev/raw-gadget does not exist 2023/01/02 21:31:57 hci packet injection: /dev/vhci does not exist 2023/01/02 21:31:57 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 2023/01/02 21:31:57 802.15.4 emulation: enabled 2023/01/02 21:31:57 suppressing KCSAN reports in functions: 'wg_packet_decrypt_worker' '__xa_clear_mark' 'tick_sched_timer' 'ext4_free_inodes_count' 'dentry_unlink_inode' '__queue_work' 'd_delete' 'fsnotify' 'relay_switch_subbuf' 'ext4_do_writepages' '__percpu_counter_compare' 'ext4_mark_iloc_dirty' 'jbd2_journal_dirty_metadata' 'jbd2_journal_stop' 'ext4_fill_raw_inode' 'xas_find_marked' 'pid_revalidate' '__ext4_update_other_inode_time' '__filemap_add_folio' 'ext4_mb_regular_allocator' 'generic_fillattr' 'do_select' '_copy_to_iter' 'jbd2_journal_commit_transaction' '__filemap_remove_folio' 'set_nlink' 'do_sys_poll' '__mark_inode_dirty' 'ext4_mpage_readpages' 'wg_packet_send_staged_packets' 'io_wq_worker_running' 'dont_mount' 'can_send' 'filemap_read' '__ext4_handle_dirty_metadata' '__fsnotify_parent' 'io_wqe_activate_free_worker' 'ext4_mb_good_group' 'blk_mq_sched_dispatch_requests' 'can_receive' 'exit_mm' 'generic_write_end' 'pcpu_alloc' '_prb_read_valid' '__lru_add_drain_all' 'data_push_tail' 'alloc_pid' 'shmem_file_read_iter' '__find_get_block' 'xas_clear_mark' 'detach_buf_split' [ 22.709155][ T23] audit: type=1400 audit(1672695117.199:77): avc: denied { mounton } for pid=3103 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 [ 22.734068][ T23] audit: type=1400 audit(1672695117.199:78): avc: denied { mount } for pid=3103 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 [ 22.757303][ T23] audit: type=1400 audit(1672695117.199:79): avc: denied { create } for pid=3103 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.777749][ T23] audit: type=1400 audit(1672695117.199:80): avc: denied { write } for pid=3103 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 22.798067][ T23] audit: type=1400 audit(1672695117.199:81): avc: denied { read } for pid=3103 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 2023/01/02 21:31:57 fetching corpus: 50, signal 14069/16010 (executing program) 2023/01/02 21:31:57 fetching corpus: 100, signal 26051/29832 (executing program) 2023/01/02 21:31:57 fetching corpus: 150, signal 32677/38242 (executing program) 2023/01/02 21:31:57 fetching corpus: 200, signal 37025/44376 (executing program) 2023/01/02 21:31:57 fetching corpus: 250, signal 42101/51173 (executing program) 2023/01/02 21:31:58 fetching corpus: 300, signal 46031/56806 (executing program) 2023/01/02 21:31:58 fetching corpus: 350, signal 52415/64775 (executing program) 2023/01/02 21:31:58 fetching corpus: 400, signal 54839/68886 (executing program) 2023/01/02 21:31:58 fetching corpus: 450, signal 57469/73122 (executing program) 2023/01/02 21:31:58 fetching corpus: 500, signal 60832/78062 (executing program) 2023/01/02 21:31:58 fetching corpus: 550, signal 64399/83190 (executing program) 2023/01/02 21:31:58 fetching corpus: 600, signal 67583/87909 (executing program) 2023/01/02 21:31:58 fetching corpus: 650, signal 69842/91709 (executing program) 2023/01/02 21:31:58 fetching corpus: 700, signal 72244/95643 (executing program) 2023/01/02 21:31:58 fetching corpus: 750, signal 74505/99418 (executing program) 2023/01/02 21:31:59 fetching corpus: 800, signal 77575/103911 (executing program) 2023/01/02 21:31:59 fetching corpus: 850, signal 79414/107266 (executing program) 2023/01/02 21:31:59 fetching corpus: 900, signal 81436/110741 (executing program) 2023/01/02 21:31:59 fetching corpus: 950, signal 82864/113640 (executing program) 2023/01/02 21:31:59 fetching corpus: 1000, signal 84483/116729 (executing program) 2023/01/02 21:31:59 fetching corpus: 1050, signal 86330/120019 (executing program) 2023/01/02 21:31:59 fetching corpus: 1100, signal 87871/123017 (executing program) 2023/01/02 21:31:59 fetching corpus: 1150, signal 89957/126462 (executing program) 2023/01/02 21:31:59 fetching corpus: 1200, signal 92393/130197 (executing program) 2023/01/02 21:31:59 fetching corpus: 1250, signal 93806/132997 (executing program) 2023/01/02 21:32:00 fetching corpus: 1300, signal 95227/135808 (executing program) 2023/01/02 21:32:00 fetching corpus: 1350, signal 96538/138496 (executing program) 2023/01/02 21:32:00 fetching corpus: 1400, signal 98445/141666 (executing program) 2023/01/02 21:32:00 fetching corpus: 1450, signal 100422/144910 (executing program) 2023/01/02 21:32:00 fetching corpus: 1500, signal 101279/147189 (executing program) 2023/01/02 21:32:00 fetching corpus: 1550, signal 102445/149720 (executing program) 2023/01/02 21:32:00 fetching corpus: 1600, signal 103777/152371 (executing program) 2023/01/02 21:32:00 fetching corpus: 1650, signal 105133/155062 (executing program) 2023/01/02 21:32:01 fetching corpus: 1700, signal 107064/158192 (executing program) 2023/01/02 21:32:01 fetching corpus: 1750, signal 108979/161334 (executing program) 2023/01/02 21:32:01 fetching corpus: 1800, signal 110187/163803 (executing program) [ 26.788461][ T0] ================================================================== [ 26.796538][ T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_nohz_stop_tick [ 26.804682][ T0] [ 26.806984][ T0] write to 0xffffffff85ed42b0 of 4 bytes by task 0 on cpu 1: [ 26.814327][ T0] tick_nohz_stop_tick+0xa0/0x400 [ 26.819333][ T0] tick_nohz_idle_stop_tick+0x174/0x2c0 [ 26.824864][ T0] do_idle+0x18a/0x250 [ 26.828909][ T0] cpu_startup_entry+0x15/0x20 [ 26.833655][ T0] start_secondary+0x78/0x80 [ 26.838228][ T0] secondary_startup_64_no_verify+0xcf/0xdb [ 26.844099][ T0] [ 26.846401][ T0] read to 0xffffffff85ed42b0 of 4 bytes by task 0 on cpu 0: [ 26.853661][ T0] tick_nohz_next_event+0x1ee/0x2c0 [ 26.858841][ T0] tick_nohz_get_sleep_length+0x15b/0x250 [ 26.864544][ T0] menu_select+0x347/0x1010 [ 26.869023][ T0] cpuidle_select+0x3d/0x50 [ 26.873515][ T0] do_idle+0x173/0x250 [ 26.877558][ T0] cpu_startup_entry+0x15/0x20 [ 26.882300][ T0] rest_init+0xe8/0xf0 [ 26.886346][ T0] arch_call_rest_init+0x5/0x10 [ 26.891186][ T0] start_kernel+0x59e/0x630 [ 26.895686][ T0] secondary_startup_64_no_verify+0xcf/0xdb [ 26.901562][ T0] [ 26.903870][ T0] value changed: 0x00000001 -> 0xffffffff [ 26.909562][ T0] [ 26.911865][ T0] Reported by Kernel Concurrency Sanitizer on: [ 26.917988][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.2.0-rc2-syzkaller-dirty #0 [ 26.926636][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 2023/01/02 21:32:01 fetching corpus: 1850, signal 111691/166564 (executing program) [ 26.936670][ T0] ================================================================== 2023/01/02 21:32:01 fetching corpus: 1900, signal 113344/169406 (executing program) 2023/01/02 21:32:01 fetching corpus: 1950, signal 114189/171557 (executing program) 2023/01/02 21:32:01 fetching corpus: 2000, signal 115306/174017 (executing program) 2023/01/02 21:32:01 fetching corpus: 2050, signal 116087/176107 (executing program) 2023/01/02 21:32:02 fetching corpus: 2100, signal 118306/179411 (executing program) 2023/01/02 21:32:02 fetching corpus: 2150, signal 119606/181904 (executing program) 2023/01/02 21:32:02 fetching corpus: 2200, signal 120937/184383 (executing program) 2023/01/02 21:32:02 fetching corpus: 2250, signal 121849/186522 (executing program) 2023/01/02 21:32:02 fetching corpus: 2300, signal 122495/188498 (executing program) 2023/01/02 21:32:02 fetching corpus: 2350, signal 123452/190702 (executing program) 2023/01/02 21:32:02 fetching corpus: 2400, signal 124262/192786 (executing program) 2023/01/02 21:32:02 fetching corpus: 2450, signal 125012/194776 (executing program) 2023/01/02 21:32:02 fetching corpus: 2500, signal 125803/196864 (executing program) 2023/01/02 21:32:02 fetching corpus: 2550, signal 126760/199042 (executing program) 2023/01/02 21:32:03 fetching corpus: 2600, signal 128795/201980 (executing program) 2023/01/02 21:32:03 fetching corpus: 2650, signal 129609/203987 (executing program) 2023/01/02 21:32:03 fetching corpus: 2700, signal 130297/205884 (executing program) 2023/01/02 21:32:03 fetching corpus: 2750, signal 131007/207801 (executing program) 2023/01/02 21:32:03 fetching corpus: 2800, signal 131642/209713 (executing program) 2023/01/02 21:32:03 fetching corpus: 2850, signal 132525/211737 (executing program) 2023/01/02 21:32:03 fetching corpus: 2900, signal 133415/213780 (executing program) 2023/01/02 21:32:03 fetching corpus: 2950, signal 134410/215833 (executing program) 2023/01/02 21:32:03 fetching corpus: 3000, signal 135436/217976 (executing program) 2023/01/02 21:32:04 fetching corpus: 3050, signal 136365/220015 (executing program) 2023/01/02 21:32:04 fetching corpus: 3100, signal 137641/222287 (executing program) 2023/01/02 21:32:04 fetching corpus: 3150, signal 138643/224345 (executing program) 2023/01/02 21:32:04 fetching corpus: 3200, signal 139224/226136 (executing program) 2023/01/02 21:32:04 fetching corpus: 3250, signal 139790/227878 (executing program) 2023/01/02 21:32:04 fetching corpus: 3300, signal 140734/229904 (executing program) 2023/01/02 21:32:04 fetching corpus: 3350, signal 141547/231813 (executing program) 2023/01/02 21:32:04 fetching corpus: 3400, signal 142809/234026 (executing program) 2023/01/02 21:32:05 fetching corpus: 3450, signal 143498/235829 (executing program) 2023/01/02 21:32:05 fetching corpus: 3500, signal 144243/237646 (executing program) 2023/01/02 21:32:05 fetching corpus: 3550, signal 144790/239378 (executing program) 2023/01/02 21:32:05 fetching corpus: 3600, signal 145536/241219 (executing program) 2023/01/02 21:32:05 fetching corpus: 3650, signal 146243/243019 (executing program) 2023/01/02 21:32:05 fetching corpus: 3700, signal 147286/245067 (executing program) 2023/01/02 21:32:05 fetching corpus: 3750, signal 148186/246950 (executing program) 2023/01/02 21:32:05 fetching corpus: 3800, signal 149048/248845 (executing program) 2023/01/02 21:32:06 fetching corpus: 3850, signal 149966/250799 (executing program) 2023/01/02 21:32:06 fetching corpus: 3900, signal 151494/253098 (executing program) 2023/01/02 21:32:06 fetching corpus: 3950, signal 152372/254944 (executing program) 2023/01/02 21:32:06 fetching corpus: 4000, signal 152901/256513 (executing program) 2023/01/02 21:32:06 fetching corpus: 4050, signal 153515/258193 (executing program) 2023/01/02 21:32:06 fetching corpus: 4100, signal 153917/259757 (executing program) 2023/01/02 21:32:06 fetching corpus: 4150, signal 154595/261455 (executing program) 2023/01/02 21:32:06 fetching corpus: 4200, signal 155538/263327 (executing program) 2023/01/02 21:32:06 fetching corpus: 4250, signal 156087/264953 (executing program) 2023/01/02 21:32:07 fetching corpus: 4300, signal 156665/266568 (executing program) 2023/01/02 21:32:07 fetching corpus: 4350, signal 157332/268270 (executing program) 2023/01/02 21:32:07 fetching corpus: 4400, signal 157976/269962 (executing program) 2023/01/02 21:32:07 fetching corpus: 4450, signal 158846/271746 (executing program) 2023/01/02 21:32:07 fetching corpus: 4500, signal 159580/273419 (executing program) 2023/01/02 21:32:07 fetching corpus: 4550, signal 160012/274967 (executing program) 2023/01/02 21:32:07 fetching corpus: 4600, signal 160513/276547 (executing program) 2023/01/02 21:32:07 fetching corpus: 4650, signal 161060/278101 (executing program) 2023/01/02 21:32:07 fetching corpus: 4700, signal 161851/279777 (executing program) 2023/01/02 21:32:07 fetching corpus: 4750, signal 162950/281673 (executing program) 2023/01/02 21:32:08 fetching corpus: 4800, signal 163470/283205 (executing program) 2023/01/02 21:32:08 fetching corpus: 4850, signal 164241/284874 (executing program) 2023/01/02 21:32:08 fetching corpus: 4900, signal 164777/286408 (executing program) 2023/01/02 21:32:08 fetching corpus: 4950, signal 165388/287966 (executing program) 2023/01/02 21:32:08 fetching corpus: 5000, signal 166024/289516 (executing program) 2023/01/02 21:32:08 fetching corpus: 5050, signal 166571/291052 (executing program) 2023/01/02 21:32:08 fetching corpus: 5100, signal 167556/292831 (executing program) 2023/01/02 21:32:08 fetching corpus: 5150, signal 168187/294400 (executing program) 2023/01/02 21:32:08 fetching corpus: 5200, signal 168749/295896 (executing program) 2023/01/02 21:32:08 fetching corpus: 5250, signal 169503/297485 (executing program) 2023/01/02 21:32:08 fetching corpus: 5300, signal 169951/298968 (executing program) 2023/01/02 21:32:09 fetching corpus: 5350, signal 170781/300605 (executing program) 2023/01/02 21:32:09 fetching corpus: 5400, signal 171451/302125 (executing program) 2023/01/02 21:32:09 fetching corpus: 5450, signal 172183/303725 (executing program) 2023/01/02 21:32:09 fetching corpus: 5500, signal 172646/305199 (executing program) 2023/01/02 21:32:09 fetching corpus: 5550, signal 173317/306764 (executing program) 2023/01/02 21:32:09 fetching corpus: 5600, signal 173932/308266 (executing program) 2023/01/02 21:32:09 fetching corpus: 5650, signal 174452/309736 (executing program) 2023/01/02 21:32:09 fetching corpus: 5700, signal 175256/311332 (executing program) 2023/01/02 21:32:09 fetching corpus: 5750, signal 175832/312810 (executing program) 2023/01/02 21:32:09 fetching corpus: 5800, signal 176374/314266 (executing program) 2023/01/02 21:32:10 fetching corpus: 5850, signal 176767/315649 (executing program) 2023/01/02 21:32:10 fetching corpus: 5900, signal 177565/317221 (executing program) 2023/01/02 21:32:10 fetching corpus: 5950, signal 178129/318634 (executing program) 2023/01/02 21:32:10 fetching corpus: 6000, signal 178636/320020 (executing program) 2023/01/02 21:32:10 fetching corpus: 6050, signal 179116/321359 (executing program) 2023/01/02 21:32:10 fetching corpus: 6100, signal 179897/322897 (executing program) 2023/01/02 21:32:10 fetching corpus: 6150, signal 180326/324259 (executing program) 2023/01/02 21:32:10 fetching corpus: 6200, signal 180909/325665 (executing program) 2023/01/02 21:32:11 fetching corpus: 6250, signal 181987/327307 (executing program) 2023/01/02 21:32:11 fetching corpus: 6300, signal 182458/328634 (executing program) 2023/01/02 21:32:11 fetching corpus: 6350, signal 182951/330031 (executing program)