INFO: task syz-executor.5:287 blocked for more than 143 seconds. Not tainted 5.10.109 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:24160 pid: 287 ppid: 1 flags:0x10004004 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 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+0x18c7/0x2770 kernel/exit.c:801 do_group_exit+0x125/0x310 kernel/exit.c:908 get_signal+0x469/0x2200 kernel/signal.c:2748 arch_do_signal+0x88/0x1b70 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: 0033:0x7f284564bfb7 RSP: 002b:00007ffea00b1c20 EFLAGS: 00000293 ORIG_RAX: 000000000000003d RAX: fffffffffffffe00 RBX: 0000000000000496 RCX: 00007f284564bfb7 RDX: 0000000040000000 RSI: 00007ffea00b1cac RDI: 00000000ffffffff RBP: 00007ffea00b1cac R08: 0000000000000000 R09: 00007f28456a71a9 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00000000003378c2 R14: 000000000000000b R15: 00007ffea00b1d10 INFO: task syz-executor.4:289 blocked for more than 143 seconds. Not tainted 5.10.109 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:24160 pid: 289 ppid: 1 flags:0x10004004 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 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+0x18c7/0x2770 kernel/exit.c:801 do_group_exit+0x125/0x310 kernel/exit.c:908 get_signal+0x469/0x2200 kernel/signal.c:2748 arch_do_signal+0x88/0x1b70 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: 0033:0x7fab1de17fb7 RSP: 002b:00007ffe53953d60 EFLAGS: 00000293 ORIG_RAX: 000000000000003d RAX: fffffffffffffe00 RBX: 00000000000005b2 RCX: 00007fab1de17fb7 RDX: 0000000040000000 RSI: 00007ffe53953dec RDI: 00000000ffffffff RBP: 00007ffe53953dec R08: 0000000000000000 R09: 00007fab1de731a9 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 000000000033784a R14: 000000000000000a R15: 00007ffe53953e50 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84df6fe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6379 2 locks held by systemd-journal/103: #0: ffff88800f87e438 (sb_writers#3){.+.+}-{0:0}, at: ksys_pwrite64 fs/read_write.c:712 [inline] #0: ffff88800f87e438 (sb_writers#3){.+.+}-{0:0}, at: __do_sys_pwrite64 fs/read_write.c:722 [inline] #0: ffff88800f87e438 (sb_writers#3){.+.+}-{0:0}, at: __se_sys_pwrite64 fs/read_write.c:719 [inline] #0: ffff88800f87e438 (sb_writers#3){.+.+}-{0:0}, at: __x64_sys_pwrite64+0x1fd/0x250 fs/read_write.c:719 #1: ffff88806b7d4970 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #1: ffff88806b7d4970 (&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/178: 3 locks held by rs:main Q:Reg/179: #0: ffff88800ce0eff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974 #1: ffff88800f87e438 (sb_writers#3){.+.+}-{0:0}, at: ksys_write+0x12d/0x250 fs/read_write.c:658 #2: ffff88801a68e6f8 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #2: ffff88801a68e6f8 (&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 syz-executor.5/287: #0: ffff888047673100 (&acct->lock#2){+.+.}-{3:3}, at: acct_get kernel/acct.c:161 [inline] #0: ffff888047673100 (&acct->lock#2){+.+.}-{3:3}, at: slow_acct_process kernel/acct.c:579 [inline] #0: ffff888047673100 (&acct->lock#2){+.+.}-{3:3}, at: acct_process+0x1e9/0x510 kernel/acct.c:605 1 lock held by syz-executor.4/289: #0: ffff888046e70900 (&acct->lock#2){+.+.}-{3:3}, at: acct_get kernel/acct.c:161 [inline] #0: ffff888046e70900 (&acct->lock#2){+.+.}-{3:3}, at: slow_acct_process kernel/acct.c:579 [inline] #0: ffff888046e70900 (&acct->lock#2){+.+.}-{3:3}, at: acct_process+0x1e9/0x510 kernel/acct.c:605 2 locks held by kworker/u4:6/8828: #0: ffff888007c61138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888007c61138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888007c61138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888007c61138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff888007c61138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff888007c61138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x8ac/0x1590 kernel/workqueue.c:2250 #1: ffff888047397da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8df/0x1590 kernel/workqueue.c:2254 3 locks held by syz-executor.4/40419: #0: ffff888046e70900 (&acct->lock#2){+.+.}-{3:3}, at: acct_get kernel/acct.c:161 [inline] #0: ffff888046e70900 (&acct->lock#2){+.+.}-{3:3}, at: slow_acct_process kernel/acct.c:579 [inline] #0: ffff888046e70900 (&acct->lock#2){+.+.}-{3:3}, at: acct_process+0x1e9/0x510 kernel/acct.c:605 #1: ffff88800f87e438 (sb_writers#3){.+.+}-{0:0}, at: slow_acct_process kernel/acct.c:581 [inline] #1: ffff88800f87e438 (sb_writers#3){.+.+}-{0:0}, at: acct_process+0x3e7/0x510 kernel/acct.c:605 #2: ffff88806448a210 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #2: ffff88806448a210 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: ext4_buffered_write_iter+0xb6/0x4d0 fs/ext4/file.c:264 3 locks held by syz-executor.5/40421: #0: ffff888047673100 (&acct->lock#2){+.+.}-{3:3}, at: acct_get kernel/acct.c:161 [inline] #0: ffff888047673100 (&acct->lock#2){+.+.}-{3:3}, at: slow_acct_process kernel/acct.c:579 [inline] #0: ffff888047673100 (&acct->lock#2){+.+.}-{3:3}, at: acct_process+0x1e9/0x510 kernel/acct.c:605 #1: ffff88800f87e438 (sb_writers#3){.+.+}-{0:0}, at: slow_acct_process kernel/acct.c:581 [inline] #1: ffff88800f87e438 (sb_writers#3){.+.+}-{0:0}, at: acct_process+0x3e7/0x510 kernel/acct.c:605 #2: ffff88801db2f0d0 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #2: ffff88801db2f0d0 (&sb->s_type->i_mutex_key#14){++++}-{3:3}, at: ext4_buffered_write_iter+0xb6/0x4d0 fs/ext4/file.c:264 =============================================