nfs4: Unknown parameter 'iocharset' INFO: task syz-executor.6:9391 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.6 state:D stack:27952 pid: 9391 ppid: 289 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: 0033:0x7fac89197f41 RSP: 002b:00007fff2b9ac6d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fac866a9700 RCX: 00007fac89197f41 RDX: 00007fac866a99d0 RSI: 00007fac866a92f0 RDI: 00000000003d0f00 RBP: 00007fff2b9ac910 R08: 00007fac866a9700 R09: 00007fac866a9700 R10: 00007fac866a99d0 R11: 0000000000000206 R12: 00007fff2b9ac78e R13: 00007fff2b9ac78f R14: 00007fac866a9300 R15: 0000000000022000 INFO: task syz-executor.6:9400 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.6 state:D stack:29496 pid: 9400 ppid: 289 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: 0033:0x7fac89196b19 RSP: 002b:00007fac866eb188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fac892aa020 RCX: 00007fac89196b19 RDX: 0000000000000000 RSI: 00000000000001f7 RDI: 0000000020000000 RBP: 00007fac891f0f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff2b9ac78f R14: 00007fac866eb300 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/177: 2 locks held by rs:main Q:Reg/178: #0: ffff88800cd06d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974 #1: ffff88800f860438 (sb_writers#3){.+.+}-{0:0}, at: ksys_write+0x12d/0x250 fs/read_write.c:658 2 locks held by agetty/218: #0: ffff8880181f2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:266 #1: ffffc900007c52e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xdca/0x1320 drivers/tty/n_tty.c:2172 1 lock held by syz-executor.6/9391: #0: ffff88800f1e7cb0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_context kernel/events/core.c:12870 [inline] #0: ffff88800f1e7cb0 (&ctx->mutex){+.+.}-{3:3}, at: perf_event_init_task+0x252/0x800 kernel/events/core.c:12945 3 locks held by syz-executor.6/9400: #0: ffff8880448d12d8 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0xfc1/0x2d00 kernel/events/core.c:11972 #1: ffff88800f1e7cb0 (&ctx->mutex){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11660 [inline] #1: ffff88800f1e7cb0 (&ctx->mutex){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11720 [inline] #1: ffff88800f1e7cb0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1237/0x2d00 kernel/events/core.c:11990 #2: ffff88800f1e7cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: mutex_lock_double kernel/events/core.c:11661 [inline] #2: ffff88800f1e7cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: __perf_event_ctx_lock_double kernel/events/core.c:11720 [inline] #2: ffff88800f1e7cb0 (&ctx->mutex/1){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x1244/0x2d00 kernel/events/core.c:11990 =============================================