netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 'syz-executor.3': attribute type 21 has an invalid length. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. INFO: task syz-executor.1:11785 blocked for more than 140 seconds. Not tainted 4.19.71 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29880 11785 7546 0x10000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:747 [inline] vfs_setxattr+0x98/0x100 fs/xattr.c:218 setxattr+0x26f/0x380 fs/xattr.c:450 path_setxattr+0x197/0x1b0 fs/xattr.c:469 __do_sys_lsetxattr fs/xattr.c:491 [inline] __se_sys_lsetxattr fs/xattr.c:487 [inline] __x64_sys_lsetxattr+0xc1/0x150 fs/xattr.c:487 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007fa78e4e7c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000080 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa78e4e86d4 R13: 00000000004ce768 R14: 00000000004da6e0 R15: 00000000ffffffff INFO: task syz-executor.1:11816 blocked for more than 140 seconds. Not tainted 4.19.71 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27944 11816 7546 0x10000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:747 [inline] lock_mount+0x8c/0x2e0 fs/namespace.c:2039 do_add_mount+0x27/0x380 fs/namespace.c:2416 do_new_mount fs/namespace.c:2483 [inline] do_mount+0x160a/0x2bc0 fs/namespace.c:2799 ksys_mount+0xdb/0x150 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3026 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007fa78e4c6c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004598e9 RDX: 0000000020000180 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 000000000075c070 R08: 00000000200001c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa78e4c76d4 R13: 00000000004c5e68 R14: 00000000004da9b0 R15: 00000000ffffffff INFO: task syz-executor.1:11817 blocked for more than 140 seconds. Not tainted 4.19.71 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29464 11817 7546 0x10000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:747 [inline] chown_common+0x320/0x5c0 fs/open.c:648 do_fchownat+0x143/0x200 fs/open.c:681 __do_sys_chown fs/open.c:701 [inline] __se_sys_chown fs/open.c:699 [inline] __x64_sys_chown+0x7b/0xc0 fs/open.c:699 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007fa78e4a5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000005c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000000000cff RDI: 00000000200001c0 RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa78e4a66d4 R13: 00000000004c5ab1 R14: 00000000004d1ad0 R15: 00000000ffffffff INFO: task syz-executor.1:11818 blocked for more than 140 seconds. Not tainted 4.19.71 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29656 11818 7546 0x10000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:747 [inline] chown_common+0x320/0x5c0 fs/open.c:648 do_fchownat+0x143/0x200 fs/open.c:681 __do_sys_chown fs/open.c:701 [inline] __se_sys_chown fs/open.c:699 [inline] __x64_sys_chown+0x7b/0xc0 fs/open.c:699 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007fa78e484c78 EFLAGS: 00000246 ORIG_RAX: 000000000000005c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000000000cff RDI: 00000000200001c0 RBP: 000000000075c1c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa78e4856d4 R13: 00000000004c5ab1 R14: 00000000004d1ad0 R15: 00000000ffffffff INFO: task syz-executor.1:11819 blocked for more than 140 seconds. Not tainted 4.19.71 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29160 11819 7546 0x10000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3474 schedule+0x92/0x1c0 kernel/sched/core.c:3518 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:747 [inline] utimes_common.isra.0+0x2e8/0x600 fs/utimes.c:90 do_utimes+0x1f5/0x350 fs/utimes.c:156 do_futimesat+0x147/0x1c0 fs/utimes.c:212 __do_sys_utimes fs/utimes.c:225 [inline] __se_sys_utimes fs/utimes.c:222 [inline] __x64_sys_utimes+0x59/0x80 fs/utimes.c:222 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: Bad RIP value. RSP: 002b:00007fa78e463c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000eb RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200 RBP: 000000000075c268 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa78e4646d4 R13: 00000000004c90c1 R14: 00000000004e0320 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1037: #0: 0000000036f2e6d3 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4435 1 lock held by rsyslogd/7379: 2 locks held by getty/7502: #0: 000000008548b212 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000001c0e07e4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7503: #0: 0000000037b96870 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000000cc4b701 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7504: #0: 000000005d39d0fe (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 0000000005d1223a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7505: #0: 0000000032110b4b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000ca2497cc (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7506: #0: 00000000566fc737 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000d57f9fab (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7507: #0: 00000000a15ee11e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000cb25d8e4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7508: #0: 00000000204491bb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000cbb9173f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by syz-executor.1/11782: #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: sb_start_write include/linux/fs.h:1578 [inline] #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: inode_lock include/linux/fs.h:747 [inline] #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: utimes_common.isra.0+0x2e8/0x600 fs/utimes.c:90 2 locks held by syz-executor.1/11785: #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: sb_start_write include/linux/fs.h:1578 [inline] #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: inode_lock include/linux/fs.h:747 [inline] #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: vfs_setxattr+0x98/0x100 fs/xattr.c:218 1 lock held by syz-executor.1/11816: #0: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: inode_lock include/linux/fs.h:747 [inline] #0: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: lock_mount+0x8c/0x2e0 fs/namespace.c:2039 2 locks held by syz-executor.1/11817: #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: sb_start_write include/linux/fs.h:1578 [inline] #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: inode_lock include/linux/fs.h:747 [inline] #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: chown_common+0x320/0x5c0 fs/open.c:648 2 locks held by syz-executor.1/11818: #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: sb_start_write include/linux/fs.h:1578 [inline] #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: inode_lock include/linux/fs.h:747 [inline] #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: chown_common+0x320/0x5c0 fs/open.c:648 2 locks held by syz-executor.1/11819: #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: sb_start_write include/linux/fs.h:1578 [inline] #0: 00000000f2e4d7cf (sb_writers#22){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360 #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: inode_lock include/linux/fs.h:747 [inline] #1: 00000000bae856f1 (&sb->s_type->i_mutex_key#29){+.+.}, at: utimes_common.isra.0+0x2e8/0x600 fs/utimes.c:90 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1037 Comm: khungtaskd Not tainted 4.19.71 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:287 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60