blk_update_request: I/O error, dev loop7, sector 2 op 0x0:(READ) flags 0x1000 phys_seg 1 prio class 0 EXT4-fs (loop7): unable to read superblock INFO: task syz-executor.3:12511 blocked for more than 143 seconds. Not tainted 5.10.123 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:29232 pid:12511 ppid: 284 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3792 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4541 schedule+0xcb/0x270 kernel/sched/core.c:4619 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4678 __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:11664 [inline] __perf_event_ctx_lock_double kernel/events/core.c:11723 [inline] __do_sys_perf_event_open+0x1244/0x2cb0 kernel/events/core.c:11996 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f2c1209bb19 RSP: 002b:00007f2c0f611188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f2c121aef60 RCX: 00007f2c1209bb19 RDX: 0000000000000000 RSI: 00000000000002b5 RDI: 0000000020001d80 RBP: 00007f2c120f5f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc967f92f R14: 00007f2c0f611300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: ffffffff84df7460 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6389 2 locks held by in:imklog/177: 2 locks held by rs:main Q:Reg/178: 2 locks held by agetty/221: #0: ffff88800cf2d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:266 #1: ffffc900007db2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf35/0x14c0 drivers/tty/n_tty.c:2208 2 locks held by agetty/4727: #0: ffff88801a7dc098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:266 #1: ffffc9001194d2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xf35/0x14c0 drivers/tty/n_tty.c:2208 3 locks held by syz-executor.3/12511: #0: ffff8880460d4d58 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc1/0x2cb0 kernel/events/core.c:11978 #1: ffff888047769cb0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11663 [inline] #1: ffff888047769cb0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11723 [inline] #1: ffff888047769cb0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1237/0x2cb0 kernel/events/core.c:11996 #2: ffff888047769cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11664 [inline] #2: ffff888047769cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11723 [inline] #2: ffff888047769cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1244/0x2cb0 kernel/events/core.c:11996 =============================================