hfs: can't find a HFS filesystem on dev loop2 FAT-fs (loop5): Unrecognized mount option "" or missing value cgroup: fork rejected by pids controller in /syz3 INFO: task syz-executor5:10756 blocked for more than 140 seconds. Not tainted 4.19.0-rc7+ #52 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D23328 10756 5984 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 fanotify_get_response fs/notify/fanotify/fanotify.c:68 [inline] fanotify_handle_event+0x7fb/0x9a0 fs/notify/fanotify/fanotify.c:245 send_to_group fs/notify/fsnotify.c:234 [inline] fsnotify+0x87f/0x12f0 fs/notify/fsnotify.c:367 fsnotify_perm include/linux/fsnotify.h:52 [inline] security_file_open+0x16f/0x1b0 security/security.c:986 do_dentry_open+0x331/0x1250 fs/open.c:758 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3418 [inline] path_openat+0x12bf/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 ksys_open include/linux/syscalls.h:1276 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: Bad RIP value. RSP: 002b:00007fd7602bac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd7602bb6d4 R13: 00000000004bdb43 R14: 00000000004cc688 R15: 00000000ffffffff INFO: task syz-executor5:10758 blocked for more than 140 seconds. Not tainted 4.19.0-rc7+ #52 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D25352 10758 5984 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 fanotify_get_response fs/notify/fanotify/fanotify.c:68 [inline] fanotify_handle_event+0x7fb/0x9a0 fs/notify/fanotify/fanotify.c:245 send_to_group fs/notify/fsnotify.c:234 [inline] fsnotify+0x87f/0x12f0 fs/notify/fsnotify.c:367 fsnotify_perm include/linux/fsnotify.h:52 [inline] security_file_open+0x16f/0x1b0 security/security.c:986 do_dentry_open+0x331/0x1250 fs/open.c:758 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3418 [inline] path_openat+0x12bf/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: Bad RIP value. RSP: 002b:00007fd760299c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000020000140 RDI: ffffffffffffff9c RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd76029a6d4 R13: 00000000004c2b7f R14: 00000000004d41b8 R15: 00000000ffffffff INFO: task syz-executor5:10784 blocked for more than 140 seconds. Not tainted 4.19.0-rc7+ #52 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D25368 10784 5984 0x00000004 Call Trace: context_switch kernel/sched/core.c:2825 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473 schedule+0xfe/0x460 kernel/sched/core.c:3517 fanotify_get_response fs/notify/fanotify/fanotify.c:68 [inline] fanotify_handle_event+0x7fb/0x9a0 fs/notify/fanotify/fanotify.c:245 send_to_group fs/notify/fsnotify.c:234 [inline] fsnotify+0x87f/0x12f0 fs/notify/fsnotify.c:367 fsnotify_perm include/linux/fsnotify.h:52 [inline] security_file_open+0x16f/0x1b0 security/security.c:986 do_dentry_open+0x331/0x1250 fs/open.c:758 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3418 [inline] path_openat+0x12bf/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 ksys_open include/linux/syscalls.h:1276 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: Bad RIP value. RSP: 002b:00007fd760257c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000072c180 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd7602586d4 R13: 00000000004bdb43 R14: 00000000004cc688 R15: 00000000ffffffff INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 PID: 982 Comm: khungtaskd Not tainted 4.19.0-rc7+ #52 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0xb3e/0x1050 kernel/hung_task.c:265 kthread+0x35a/0x420 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3195 Comm: udevd Not tainted 4.19.0-rc7+ #52 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:write_comp_data+0x19/0x70 kernel/kcov.c:116 Code: d7 c9 ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 65 4c 8b 04 25 40 ee 01 00 65 8b 05 9f 18 83 7e a9 00 01 1f 00 48 89 e5 <75> 51 41 8b 80 d0 12 00 00 83 f8 03 75 45 49 8b 80 d8 12 00 00 45 RSP: 0018:ffff8801c79c7898 EFLAGS: 00000246 RAX: 0000000080000000 RBX: 1ffff10038f38f19 RCX: ffffffff81d428ff RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000007 RBP: ffff8801c79c7898 R08: ffff8801c79be180 R09: 000000000000000c R10: ffffed00390d74f0 R11: 0000000000000001 R12: 0000000000000002 R13: 000000003b9ac7b6 R14: ffff8801c79c7968 R15: 0000000000000000 FS: 00007f89f30fb7a0(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 00000001c7e0b000 CR4: 00000000001426e0 Call Trace: __sanitizer_cov_trace_const_cmp8+0x18/0x20 kernel/kcov.c:195 __estimate_accuracy fs/select.c:57 [inline] select_estimate_accuracy+0x21f/0x4b0 fs/select.c:89 ep_poll+0x6d9/0x13d0 fs/eventpoll.c:1758 do_epoll_wait+0x1b0/0x200 fs/eventpoll.c:2198 __do_sys_epoll_wait fs/eventpoll.c:2208 [inline] __se_sys_epoll_wait fs/eventpoll.c:2205 [inline] __x64_sys_epoll_wait+0x97/0xf0 fs/eventpoll.c:2205 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f89f280f943 Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24 RSP: 002b:00007ffe1b6ab4a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000bb8 RCX: 00007f89f280f943 RDX: 0000000000000008 RSI: 00007ffe1b6ab5a0 RDI: 000000000000000a RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000bb8 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 00000000019dce50 R15: 0000000001999250