RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007fa6558e31d0 R08: 000000000200f5ef R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc6f07fe7f R14: 00007fa6558e3300 R15: 0000000000022000 INFO: task syz-executor.3:285 blocked for more than 143 seconds. Not tainted 5.10.60 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:24064 pid: 285 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3774 [inline] __schedule+0x84b/0x1e90 kernel/sched/core.c:4523 schedule+0xcb/0x270 kernel/sched/core.c:4601 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4660 __mutex_lock_common kernel/locking/mutex.c:1046 [inline] __mutex_lock+0x828/0x12e0 kernel/locking/mutex.c:1114 acct_get kernel/acct.c:161 [inline] slow_acct_process kernel/acct.c:579 [inline] acct_process+0x1e9/0x510 kernel/acct.c:605 do_exit+0x18bb/0x2770 kernel/exit.c:801 do_group_exit+0x125/0x310 kernel/exit.c:908 get_signal+0x469/0x2210 kernel/signal.c:2758 arch_do_signal+0x88/0x1b00 arch/x86/kernel/signal.c:805 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0xf7/0x160 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x464aa7 RSP: 002b:00007ffce850d320 EFLAGS: 00000293 ORIG_RAX: 000000000000003d RAX: fffffffffffffe00 RBX: 0000000000000347 RCX: 0000000000464aa7 RDX: 0000000040000000 RSI: 00007ffce850d3bc RDI: 00000000ffffffff RBP: 00007ffce850d3bc R08: 0000000000000000 R09: 00000000004bebba R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000256763 R14: 0000000000000006 R15: 00007ffce850d420 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84df66e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6377 2 locks held by systemd-journal/103: #0: ffff88800f930438 (sb_writers#3){.+.+}-{0:0}, at: ksys_pwrite64 fs/read_write.c:712 [inline] #0: ffff88800f930438 (sb_writers#3){.+.+}-{0:0}, at: __do_sys_pwrite64 fs/read_write.c:722 [inline] #0: ffff88800f930438 (sb_writers#3){.+.+}-{0:0}, at: __se_sys_pwrite64 fs/read_write.c:719 [inline] #0: ffff88800f930438 (sb_writers#3){.+.+}-{0:0}, at: __x64_sys_pwrite64+0x1fe/0x250 fs/read_write.c:719 #1: ffff88806808b5c0 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #1: ffff88806808b5c0 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: ext4_buffered_write_iter+0xb6/0x4d0 fs/ext4/file.c:264 1 lock held by in:imklog/179: 3 locks held by rs:main Q:Reg/180: 1 lock held by syz-executor.3/285: #0: ffff8880097a0d00 (&acct->lock#2){+.+.}-{3:3}, at: acct_get kernel/acct.c:161 [inline] #0: ffff8880097a0d00 (&acct->lock#2){+.+.}-{3:3}, at: slow_acct_process kernel/acct.c:579 [inline] #0: ffff8880097a0d00 (&acct->lock#2){+.+.}-{3:3}, at: acct_process+0x1e9/0x510 kernel/acct.c:605 3 locks held by kworker/u4:5/320: 3 locks held by syz-executor.3/13006: #0: ffff8880097a0d00 (&acct->lock#2){+.+.}-{3:3}, at: acct_get kernel/acct.c:161 [inline] #0: ffff8880097a0d00 (&acct->lock#2){+.+.}-{3:3}, at: slow_acct_process kernel/acct.c:579 [inline] #0: ffff8880097a0d00 (&acct->lock#2){+.+.}-{3:3}, at: acct_process+0x1e9/0x510 kernel/acct.c:605 #1: ffff88800f930438 (sb_writers#3){.+.+}-{0:0}, at: slow_acct_process kernel/acct.c:581 [inline] #1: ffff88800f930438 (sb_writers#3){.+.+}-{0:0}, at: acct_process+0x3e7/0x510 kernel/acct.c:605 #2: ffff8880591f2210 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #2: ffff8880591f2210 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: ext4_buffered_write_iter+0xb6/0x4d0 fs/ext4/file.c:264 =============================================