netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. Process accounting resumed EXT4-fs (loop0): VFS: Found ext4 filesystem with unknown checksum algorithm. Process accounting resumed INFO: task syz-executor.6:12905 blocked for more than 143 seconds. Not tainted 5.10.56 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.6 state:D stack:28752 pid:12905 ppid: 410 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:3776 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4525 schedule+0xcb/0x270 kernel/sched/core.c:4603 io_uring_cancel_files fs/io_uring.c:8681 [inline] io_uring_cancel_task_requests+0xbc1/0x1260 fs/io_uring.c:8748 __io_uring_files_cancel+0x110/0x1b0 fs/io_uring.c:8830 __io_uring_task_cancel+0x223/0x250 fs/io_uring.c:8879 io_uring_task_cancel include/linux/io_uring.h:46 [inline] bprm_execve+0x114/0x1b00 fs/exec.c:1789 do_execveat_common+0x621/0x7c0 fs/exec.c:1919 do_execveat fs/exec.c:1998 [inline] __do_sys_execveat fs/exec.c:2074 [inline] __se_sys_execveat fs/exec.c:2066 [inline] __x64_sys_execveat+0xed/0x130 fs/exec.c:2066 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 RSP: 002b:00007fccd39ab188 EFLAGS: 00000246 ORIG_RAX: 0000000000000142 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffffff RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff0b32a0df R14: 00007fccd39ab300 R15: 0000000000022000 INFO: task syz-executor.6:12949 blocked for more than 143 seconds. Not tainted 5.10.56 #1 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.6 state:D stack:28688 pid:12949 ppid: 410 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:3776 [inline] __schedule+0x848/0x1e80 kernel/sched/core.c:4525 schedule+0xcb/0x270 kernel/sched/core.c:4603 io_uring_cancel_files fs/io_uring.c:8681 [inline] io_uring_cancel_task_requests+0xbc1/0x1260 fs/io_uring.c:8748 __io_uring_files_cancel+0x110/0x1b0 fs/io_uring.c:8830 io_uring_files_cancel include/linux/io_uring.h:51 [inline] do_exit+0x2f6/0x2770 kernel/exit.c:766 do_group_exit+0x125/0x310 kernel/exit.c:908 get_signal+0x469/0x2200 kernel/signal.c:2758 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: 0033:0x466609 RSP: 002b:00007fccd3948218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000056c1b0 RCX: 0000000000466609 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000056c1b4 RBP: 000000000056c1a8 R08: 000000000000000e R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000246 R12: 000000000056c1b4 R13: 00007fff0b32a0df R14: 00007fccd3948300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/22: #0: ffffffff84df6660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6377 1 lock held by systemd-journal/101: 1 lock held by in:imklog/353: #0: ffff88800c3ded70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:930 2 locks held by rs:main Q:Reg/354: 2 locks held by agetty/225: #0: ffff88800caf5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:266 #1: ffffc900007d32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xdca/0x1320 drivers/tty/n_tty.c:2174 =============================================