EXT4-fs error (device loop7): ext4_fill_super:4959: inode #2: comm syz-executor.7: iget: root inode unallocated EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed INFO: task syz-executor.2:7436 blocked for more than 143 seconds. Not tainted 5.10.105 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27952 pid: 7436 ppid: 284 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3791 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4540 schedule+0xcb/0x270 kernel/sched/core.c:4618 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4677 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7c9/0x1250 kernel/locking/mutex.c:1109 perf_event_init_context kernel/events/core.c:12870 [inline] perf_event_init_task+0x252/0x800 kernel/events/core.c:12945 copy_process+0x1721/0x66f0 kernel/fork.c:2079 kernel_clone+0xe7/0xa20 kernel/fork.c:2466 __do_sys_clone+0xc8/0x110 kernel/fork.c:2583 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f67048f0f41 RSP: 002b:00007fff93f55588 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f6701e23700 RCX: 00007f67048f0f41 RDX: 00007f6701e239d0 RSI: 00007f6701e232f0 RDI: 00000000003d0f00 RBP: 00007fff93f557c0 R08: 00007f6701e23700 R09: 00007f6701e23700 R10: 00007f6701e239d0 R11: 0000000000000206 R12: 00007fff93f5563e R13: 00007fff93f5563f R14: 00007f6701e23300 R15: 0000000000022000 INFO: task syz-executor.2:7439 blocked for more than 143 seconds. Not tainted 5.10.105 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:27952 pid: 7439 ppid: 284 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3791 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4540 schedule+0xcb/0x270 kernel/sched/core.c:4618 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4677 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7c9/0x1250 kernel/locking/mutex.c:1109 mutex_lock_double kernel/events/core.c:11661 [inline] __perf_event_ctx_lock_double kernel/events/core.c:11720 [inline] __do_sys_perf_event_open+0x1244/0x2d00 kernel/events/core.c:11990 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f67048efb19 RSP: 002b:00007f6701e65188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f6704a02f60 RCX: 00007f67048efb19 RDX: 0000000000000000 RSI: 0000000000000137 RDI: 0000000020001d80 RBP: 00007f6704949f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff93f5563f R14: 00007f6701e65300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84df6e20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6379 1 lock held by in:imklog/179: 1 lock held by syz-executor.2/7436: #0: ffff88801d43b0b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_context kernel/events/core.c:12870 [inline] #0: ffff88801d43b0b0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_task+0x252/0x800 kernel/events/core.c:12945 3 locks held by syz-executor.2/7439: #0: ffff88801c99acd8 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc1/0x2d00 kernel/events/core.c:11972 #1: ffff88801d43b0b0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11660 [inline] #1: ffff88801d43b0b0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11720 [inline] #1: ffff88801d43b0b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1237/0x2d00 kernel/events/core.c:11990 #2: ffff88801d43b0b0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11661 [inline] #2: ffff88801d43b0b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11720 [inline] #2: ffff88801d43b0b0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1244/0x2d00 kernel/events/core.c:11990 =============================================