netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.3'. INFO: task syz-executor.0:4788 blocked for more than 143 seconds. Not tainted 5.10.209 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:24144 pid: 4788 ppid: 1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3800 [inline] __schedule+0x824/0x1ea0 kernel/sched/core.c:4548 schedule+0xcb/0x270 kernel/sched/core.c:4626 schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:4685 __mutex_lock_common kernel/locking/mutex.c:1047 [inline] __mutex_lock+0x7a8/0x10b0 kernel/locking/mutex.c:1109 acct_get kernel/acct.c:161 [inline] slow_acct_process kernel/acct.c:581 [inline] acct_process+0x1e7/0x580 kernel/acct.c:607 do_exit+0x182f/0x2600 kernel/exit.c:848 do_group_exit+0x125/0x310 kernel/exit.c:980 get_signal+0x4bc/0x22e0 kernel/signal.c:2751 arch_do_signal_or_restart+0x2b7/0x1990 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x10f/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1e0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x62/0xc7 RIP: 0033:0x7fb880a8afb7 RSP: 002b:00007fff6a27b0f0 EFLAGS: 00000293 ORIG_RAX: 000000000000003d RAX: fffffffffffffe00 RBX: 0000000000000446 RCX: 00007fb880a8afb7 RDX: 0000000040000000 RSI: 00007fff6a27b17c RDI: 00000000ffffffff RBP: 00007fff6a27b17c R08: 0000000000000000 R09: 00007fb880ae61a9 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00000000002e3702 R14: 0000000000000012 R15: 00007fff6a27b1e0 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84ff85e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x27b kernel/locking/lockdep.c:6391 2 locks held by systemd-journal/103: #0: ffff88800fbc8438 (sb_writers#3){.+.+}-{0:0}, at: ksys_pwrite64 fs/read_write.c:712 [inline] #0: ffff88800fbc8438 (sb_writers#3){.+.+}-{0:0}, at: __do_sys_pwrite64 fs/read_write.c:722 [inline] #0: ffff88800fbc8438 (sb_writers#3){.+.+}-{0:0}, at: __se_sys_pwrite64 fs/read_write.c:719 [inline] #0: ffff88800fbc8438 (sb_writers#3){.+.+}-{0:0}, at: __x64_sys_pwrite64+0x201/0x260 fs/read_write.c:719 #1: ffff888015d2dd20 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #1: ffff888015d2dd20 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x4a0 fs/ext4/file.c:263 1 lock held by in:imklog/177: #0: ffff88800b8b7770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xf1/0x190 fs/file.c:1033 3 locks held by rs:main Q:Reg/178: #0: ffff88800e7b0ff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xf1/0x190 fs/file.c:1033 #1: ffff88800fbc8438 (sb_writers#3){.+.+}-{0:0}, at: ksys_write+0x12d/0x260 fs/read_write.c:658 #2: ffff88801ae0dd20 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #2: ffff88801ae0dd20 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x4a0 fs/ext4/file.c:263 3 locks held by kworker/u4:8/338: 1 lock held by syz-executor.0/4788: #0: ffff888048fe5900 (&acct->lock#2){+.+.}-{3:3}, at: acct_get kernel/acct.c:161 [inline] #0: ffff888048fe5900 (&acct->lock#2){+.+.}-{3:3}, at: slow_acct_process kernel/acct.c:581 [inline] #0: ffff888048fe5900 (&acct->lock#2){+.+.}-{3:3}, at: acct_process+0x1e7/0x580 kernel/acct.c:607 3 locks held by syz-executor.0/15424: #0: ffff888048fe5900 (&acct->lock#2){+.+.}-{3:3}, at: acct_get kernel/acct.c:161 [inline] #0: ffff888048fe5900 (&acct->lock#2){+.+.}-{3:3}, at: slow_acct_process kernel/acct.c:581 [inline] #0: ffff888048fe5900 (&acct->lock#2){+.+.}-{3:3}, at: acct_process+0x1e7/0x580 kernel/acct.c:607 #1: ffff88800fbc8438 (sb_writers#3){.+.+}-{0:0}, at: slow_acct_process kernel/acct.c:583 [inline] #1: ffff88800fbc8438 (sb_writers#3){.+.+}-{0:0}, at: acct_process+0x41f/0x580 kernel/acct.c:607 #2: ffff8880491a4970 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: inode_lock include/linux/fs.h:774 [inline] #2: ffff8880491a4970 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x4a0 fs/ext4/file.c:263 =============================================