[ 7.421140][ T2773] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 15.365945][ T23] kauditd_printk_skb: 60 callbacks suppressed [ 15.365953][ T23] audit: type=1400 audit(1674495169.623:72): 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 [ 15.371077][ T23] audit: type=1400 audit(1674495169.623:73): avc: denied { write } for pid=2934 comm="sh" path="pipe:[15448]" dev="pipefs" ino=15448 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 16.590497][ T2937] scp (2937) used greatest stack depth: 11368 bytes left Warning: Permanently added '10.128.0.62' (ECDSA) to the list of known hosts. 2023/01/23 17:32:56 fuzzer started 2023/01/23 17:32:56 dialing manager at 10.128.0.163:39985 [ 22.728228][ T23] audit: type=1400 audit(1674495176.983:74): avc: denied { mounton } for pid=3104 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 [ 22.731548][ T3104] cgroup: Unknown subsys name 'net' [ 22.751352][ T23] audit: type=1400 audit(1674495176.983:75): avc: denied { mount } for pid=3104 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 [ 22.778662][ T23] audit: type=1400 audit(1674495177.013:76): avc: denied { unmount } for pid=3104 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 22.916759][ T3104] cgroup: Unknown subsys name 'rlimit' 2023/01/23 17:32:57 syscalls: 2806 2023/01/23 17:32:57 code coverage: enabled 2023/01/23 17:32:57 comparison tracing: enabled 2023/01/23 17:32:57 extra coverage: enabled 2023/01/23 17:32:57 delay kcov mmap: enabled 2023/01/23 17:32:57 setuid sandbox: enabled 2023/01/23 17:32:57 namespace sandbox: enabled 2023/01/23 17:32:57 Android sandbox: enabled 2023/01/23 17:32:57 fault injection: enabled 2023/01/23 17:32:57 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2023/01/23 17:32:57 net packet injection: enabled 2023/01/23 17:32:57 net device setup: enabled 2023/01/23 17:32:57 concurrency sanitizer: enabled 2023/01/23 17:32:57 devlink PCI setup: PCI device 0000:00:10.0 is not available 2023/01/23 17:32:57 NIC VF setup: PCI device 0000:00:11.0 is not available 2023/01/23 17:32:57 USB emulation: /dev/raw-gadget does not exist 2023/01/23 17:32:57 hci packet injection: /dev/vhci does not exist 2023/01/23 17:32:57 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 2023/01/23 17:32:57 802.15.4 emulation: enabled 2023/01/23 17:32:57 suppressing KCSAN reports in functions: 'generic_write_end' 'blk_mq_sched_dispatch_requests' 'do_sys_poll' 'ext4_fill_raw_inode' 'generic_fillattr' 'ext4_mb_good_group' '__writeback_single_inode' 'jbd2_journal_dirty_metadata' '__wb_update_bandwidth' 'netlink_dump' 'ext4_free_inodes_count' 'tick_sched_timer' 'can_receive' '__ext4_update_other_inode_time' '__fsnotify_parent' '__xa_clear_mark' 'exit_mm' 'filemap_read' 'can_send' 'xas_find_marked' 'pcpu_alloc' 'dentry_unlink_inode' 'io_wq_worker_running' 'shmem_file_read_iter' 'filemap_fdatawrite_wbc' '__mark_inode_dirty' [ 23.006595][ T23] audit: type=1400 audit(1674495177.263:77): avc: denied { mounton } for pid=3104 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 [ 23.031751][ T23] audit: type=1400 audit(1674495177.263:78): avc: denied { mount } for pid=3104 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 [ 23.055185][ T23] audit: type=1400 audit(1674495177.263:79): avc: denied { create } for pid=3104 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 23.075932][ T23] audit: type=1400 audit(1674495177.263:80): avc: denied { write } for pid=3104 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 2023/01/23 17:32:57 fetching corpus: 0, signal 0/2000 (executing program) [ 23.096554][ T23] audit: type=1400 audit(1674495177.263:81): avc: denied { read } for pid=3104 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 2023/01/23 17:32:57 fetching corpus: 50, signal 12045/15914 (executing program) 2023/01/23 17:32:57 fetching corpus: 100, signal 23776/29374 (executing program) 2023/01/23 17:32:57 fetching corpus: 150, signal 31638/38950 (executing program) 2023/01/23 17:32:57 fetching corpus: 200, signal 35705/44736 (executing 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fetching corpus: 1450, signal 92763/137645 (executing program) 2023/01/23 17:32:59 fetching corpus: 1500, signal 94011/140184 (executing program) 2023/01/23 17:32:59 fetching corpus: 1550, signal 95232/142688 (executing program) 2023/01/23 17:32:59 fetching corpus: 1600, signal 96492/145218 (executing program) 2023/01/23 17:32:59 fetching corpus: 1650, signal 97406/147415 (executing program) 2023/01/23 17:32:59 fetching corpus: 1700, signal 98332/149620 (executing program) 2023/01/23 17:32:59 fetching corpus: 1750, signal 99104/151711 (executing program) 2023/01/23 17:33:00 fetching corpus: 1800, signal 100377/154190 (executing program) 2023/01/23 17:33:00 fetching corpus: 1850, signal 102232/157127 (executing program) 2023/01/23 17:33:00 fetching corpus: 1900, signal 103588/159642 (executing program) 2023/01/23 17:33:00 fetching corpus: 1950, signal 104610/161924 (executing program) 2023/01/23 17:33:00 fetching corpus: 2000, signal 105834/164306 (executing program) 2023/01/23 17:33:00 fetching corpus: 2050, signal 106675/166343 (executing program) 2023/01/23 17:33:00 fetching corpus: 2100, signal 107995/168746 (executing program) 2023/01/23 17:33:00 fetching corpus: 2150, signal 109342/171216 (executing program) 2023/01/23 17:33:00 fetching corpus: 2200, signal 110210/173263 (executing program) 2023/01/23 17:33:00 fetching corpus: 2250, signal 111997/175991 (executing program) 2023/01/23 17:33:00 fetching corpus: 2300, signal 112929/178098 (executing program) 2023/01/23 17:33:00 fetching corpus: 2350, signal 113844/180137 (executing program) 2023/01/23 17:33:00 fetching corpus: 2400, signal 114453/181967 (executing program) 2023/01/23 17:33:01 fetching corpus: 2450, signal 115666/184213 (executing program) 2023/01/23 17:33:01 fetching corpus: 2500, signal 116817/186430 (executing program) [ 26.845511][ T0] ================================================================== [ 26.853595][ T0] BUG: KCSAN: data-race in tick_nohz_stop_tick / tick_nohz_stop_tick [ 26.861671][ T0] [ 26.864059][ T0] write to 0xffffffff85ed51f0 of 4 bytes by task 0 on cpu 0: [ 26.871403][ T0] tick_nohz_stop_tick+0xa0/0x400 [ 26.876440][ T0] tick_nohz_idle_stop_tick+0x174/0x2c0 [ 26.882010][ T0] do_idle+0x18a/0x250 [ 26.886066][ T0] cpu_startup_entry+0x15/0x20 [ 26.890808][ T0] rest_init+0xe8/0xf0 [ 26.894861][ T0] arch_call_rest_init+0x5/0x10 [ 26.899711][ T0] start_kernel+0x59e/0x630 [ 26.904196][ T0] secondary_startup_64_no_verify+0xcf/0xdb [ 26.910082][ T0] [ 26.912385][ T0] read to 0xffffffff85ed51f0 of 4 bytes by task 0 on cpu 1: [ 26.919655][ T0] tick_nohz_stop_tick+0x7a/0x400 [ 26.924684][ T0] tick_nohz_idle_stop_tick+0x174/0x2c0 [ 26.930322][ T0] do_idle+0x18a/0x250 [ 26.934375][ T0] cpu_startup_entry+0x15/0x20 [ 26.939117][ T0] start_secondary+0x78/0x80 2023/01/23 17:33:01 fetching corpus: 2550, signal 117641/188404 (executing program) [ 26.943701][ T0] secondary_startup_64_no_verify+0xcf/0xdb [ 26.949856][ T0] [ 26.952176][ T0] value changed: 0x00000000 -> 0xffffffff [ 26.957893][ T0] [ 26.960208][ T0] Reported by Kernel Concurrency Sanitizer on: [ 26.966345][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.2.0-rc5-syzkaller-00013-g2475bf0250de-dirty #0 [ 26.976576][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 26.986618][ T0] ================================================================== 2023/01/23 17:33:01 fetching corpus: 2600, signal 118420/190320 (executing program) 2023/01/23 17:33:01 fetching corpus: 2650, signal 119244/192275 (executing program) 2023/01/23 17:33:01 fetching corpus: 2700, signal 120061/194228 (executing program) 2023/01/23 17:33:01 fetching corpus: 2750, signal 120797/196098 (executing program) 2023/01/23 17:33:01 fetching corpus: 2800, signal 121640/198012 (executing program) 2023/01/23 17:33:01 fetching corpus: 2850, signal 122495/199952 (executing program) 2023/01/23 17:33:01 fetching corpus: 2900, signal 123037/201666 (executing program) 2023/01/23 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