team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves INFO: task jbd2/sda1-8:3306 blocked for more than 140 seconds. Not tainted 4.19.0-rc4-next-20180921+ #77 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. jbd2/sda1-8 D18264 3306 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2830 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3479 schedule+0xfe/0x460 kernel/sched/core.c:3523 jbd2_journal_commit_transaction+0xd38/0x89da fs/jbd2/commit.c:435 kjournald2+0x26d/0xb30 fs/jbd2/journal.c:229 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 INFO: task syz-executor2:16442 blocked for more than 140 seconds. Not tainted 4.19.0-rc4-next-20180921+ #77 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D24424 16442 5622 0x00000004 Call Trace: context_switch kernel/sched/core.c:2830 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3479 schedule+0xfe/0x460 kernel/sched/core.c:3523 __rwsem_down_write_failed_common+0xbbc/0x15e0 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:745 [inline] do_truncate+0x1b0/0x2d0 fs/open.c:61 handle_truncate fs/namei.c:3008 [inline] do_last fs/namei.c:3424 [inline] path_openat+0x375c/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 ksys_open include/linux/syscalls.h:1292 [inline] __do_sys_creat fs/open.c:1121 [inline] __se_sys_creat fs/open.c:1119 [inline] __x64_sys_creat+0x61/0x80 fs/open.c:1119 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: Bad RIP value. RSP: 002b:00007f2ff8839c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f2ff883a6d4 RCX: 0000000000457679 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cc688 R14: 00000000004bdcdc R15: 0000000000000001 INFO: task syz-executor2:16443 blocked for more than 140 seconds. Not tainted 4.19.0-rc4-next-20180921+ #77 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D24408 16443 5622 0x00000004 Call Trace: context_switch kernel/sched/core.c:2830 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3479 schedule+0xfe/0x460 kernel/sched/core.c:3523 __rwsem_down_write_failed_common+0xbbc/0x15e0 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:745 [inline] do_truncate+0x1b0/0x2d0 fs/open.c:61 handle_truncate fs/namei.c:3008 [inline] do_last fs/namei.c:3424 [inline] path_openat+0x375c/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 __do_sys_openat fs/open.c:1090 [inline] __se_sys_openat fs/open.c:1084 [inline] __x64_sys_openat+0x9d/0x100 fs/open.c:1084 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: Bad RIP value. RSP: 002b:00007f2ff8818c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f2ff88196d4 RCX: 0000000000457679 RDX: 000000000000275a RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d3fc0 R14: 00000000004c2b9e R15: 0000000000000002 INFO: task syz-executor2:16444 blocked for more than 140 seconds. Not tainted 4.19.0-rc4-next-20180921+ #77 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D24936 16444 5622 0x00000004 Call Trace: context_switch kernel/sched/core.c:2830 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3479 schedule+0xfe/0x460 kernel/sched/core.c:3523 __rwsem_down_write_failed_common+0xbbc/0x15e0 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:745 [inline] ext4_file_write_iter+0x30b/0x1420 fs/ext4/file.c:235 call_write_iter include/linux/fs.h:1825 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x6b8/0x9f0 fs/read_write.c:487 vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: Bad RIP value. RSP: 002b:00007f2ff87f7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f2ff87f86d4 RCX: 0000000000457679 RDX: 0000000000000014 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d87c0 R14: 00000000004c52f7 R15: 0000000000000003 INFO: task syz-executor2:16447 blocked for more than 140 seconds. Not tainted 4.19.0-rc4-next-20180921+ #77 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D26088 16447 5622 0x00000004 Call Trace: context_switch kernel/sched/core.c:2830 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3479 schedule+0xfe/0x460 kernel/sched/core.c:3523 __rwsem_down_write_failed_common+0xbbc/0x15e0 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:745 [inline] ext4_fallocate+0x917/0x22e0 fs/ext4/extents.c:4957 vfs_fallocate+0x4b4/0x940 fs/open.c:308 ksys_fallocate+0x56/0x90 fs/open.c:331 __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0x97/0xf0 fs/open.c:337 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: Bad RIP value. RSP: 002b:00007f2ff87d6c78 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f2ff87d76d4 RCX: 0000000000457679 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 000000000072c180 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000007fff R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cc868 R14: 00000000004bddb5 R15: 0000000000000004 INFO: task syz-executor2:16448 blocked for more than 140 seconds. Not tainted 4.19.0-rc4-next-20180921+ #77 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D25304 16448 5622 0x00000004 Call Trace: context_switch kernel/sched/core.c:2830 [inline] __schedule+0x86c/0x1ed0 kernel/sched/core.c:3479 schedule+0xfe/0x460 kernel/sched/core.c:3523 __rwsem_down_write_failed_common+0xbbc/0x15e0 kernel/locking/rwsem-xadd.c:577 rwsem_down_write_failed+0xe/0x10 kernel/locking/rwsem-xadd.c:606 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+0xa5/0x130 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:745 [inline] ext4_fallocate+0x917/0x22e0 fs/ext4/extents.c:4957 vfs_fallocate+0x4b4/0x940 fs/open.c:308 ksys_fallocate+0x56/0x90 fs/open.c:331 __do_sys_fallocate fs/open.c:339 [inline] __se_sys_fallocate fs/open.c:337 [inline] __x64_sys_fallocate+0x97/0xf0 fs/open.c:337 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: Bad RIP value. RSP: 002b:00007f2ff87b5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f2ff87b66d4 RCX: 0000000000457679 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 000000000072c220 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010001 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cc868 R14: 00000000004bddb5 R15: 0000000000000005 Showing all locks held in the system: 4 locks held by kworker/u4:2/29: #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0xb43/0x1b80 kernel/workqueue.c:2124 #1: 000000006fb203a7 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0xb9a/0x1b80 kernel/workqueue.c:2128 #2: 000000002dabe0f7 (&fc->fs_type->s_umount_key#30){++++}, at: trylock_super+0x22/0x110 fs/super.c:411 #3: 000000001bc77e6f (&sbi->s_journal_flag_rwsem){++++}, at: do_writepages+0x9a/0x1a0 mm/page-writeback.c:2340 4 locks held by kworker/u4:3/303: #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0xb43/0x1b80 kernel/workqueue.c:2124 #1: 000000004a3e52e5 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0xb9a/0x1b80 kernel/workqueue.c:2128 #2: 000000002dabe0f7 (&fc->fs_type->s_umount_key#30){++++}, at: trylock_super+0x22/0x110 fs/super.c:411 #3: 000000001bc77e6f (&sbi->s_journal_flag_rwsem){++++}, at: do_writepages+0x9a/0x1a0 mm/page-writeback.c:2340 1 lock held by khungtaskd/982: #0: 00000000c6a29112 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4435 3 locks held by rs:main Q:Reg/5482: #0: 0000000060fbbf90 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 #1: 000000008ffb221d (sb_writers#5){.+.+}, at: file_start_write include/linux/fs.h:2784 [inline] #1: 000000008ffb221d (sb_writers#5){.+.+}, at: vfs_write+0x42a/0x560 fs/read_write.c:548 #2: 00000000ab31e723 (&sb->s_type->i_mutex_key#12){++++}, at: inode_trylock include/linux/fs.h:770 [inline] #2: 00000000ab31e723 (&sb->s_type->i_mutex_key#12){++++}, at: ext4_file_write_iter+0x2a1/0x1420 fs/ext4/file.c:232 1 lock held by rsyslogd/5485: #0: 0000000045f929b7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 2 locks held by getty/5574: #0: 000000003ec91c86 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000005b2d6754 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5575: #0: 00000000795aa4de (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000e4e97bf9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5576: #0: 000000003565fc20 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000011c16615 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5577: #0: 000000005394f541 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000a03a8f8b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5578: #0: 00000000f0c18ed2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000ecf2d637 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5579: #0: 00000000fcccbdde (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000f8e738d6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 2 locks held by getty/5580: #0: 00000000e8224cb9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000e72ee50c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1ce0 drivers/tty/n_tty.c:2140 1 lock held by syz-executor2/7170: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/7407: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 4 locks held by kworker/u4:4/7451: #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: __write_once_size include/linux/compiler.h:215 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000ef7d1695 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0xb43/0x1b80 kernel/workqueue.c:2124 #1: 00000000d13e8558 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0xb9a/0x1b80 kernel/workqueue.c:2128 #2: 000000002dabe0f7 (&fc->fs_type->s_umount_key#30){++++}, at: trylock_super+0x22/0x110 fs/super.c:411 #3: 000000001bc77e6f (&sbi->s_journal_flag_rwsem){++++}, at: do_writepages+0x9a/0x1a0 mm/page-writeback.c:2340 1 lock held by syz-executor2/7459: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/8266: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/8383: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/8448: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/8788: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/8822: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/9135: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/9264: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/9276: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 1 lock held by syz-executor2/9367: #0: 0000000081cf160a (sb_internal){.+.+}, at: sb_start_intwrite include/linux/fs.h:1630 [inline] #0: 0000000081cf160a (sb_internal){.+.+}, at: ext4_evict_inode+0x68b/0x1ad0 fs/ext4/inode.c:250 6 locks held by syz-executor2/16399: 2 locks held by syz-executor2/16442: #0: 000000008ffb221d (sb_writers#5){.+.+}, at: sb_start_write include/linux/fs.h:1583 [inline] #0: 000000008ffb221d (sb_writers#5){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:359 #1: 00000000936e7e46 (&sb->s_type->i_mutex_key#12){++++}, at: inode_lock include/linux/fs.h:745 [inline] #1: 00000000936e7e46 (&sb->s_type->i_mutex_key#12){++++}, at: do_truncate+0x1b0/0x2d0 fs/open.c:61 2 locks held by syz-executor2/16443: #0: 000000008ffb221d (sb_writers#5){.+.+}, at: sb_start_write include/linux/fs.h:1583 [inline] #0: 000000008ffb221d (sb_writers#5){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:359 #1: 0000000001cbcb57 (&sb->s_type->i_mutex_key#12){++++}, at: inode_lock include/linux/fs.h:745 [inline] #1: 0000000001cbcb57 (&sb->s_type->i_mutex_key#12){++++}, at: do_truncate+0x1b0/0x2d0 fs/open.c:61 3 locks held by syz-executor2/16444: #0: 000000003a39cf6c (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 #1: 000000008ffb221d (sb_writers#5){.+.+}, at: file_start_write include/linux/fs.h:2784 [inline] #1: 000000008ffb221d (sb_writers#5){.+.+}, at: vfs_write+0x42a/0x560 fs/read_write.c:548 #2: 0000000001cbcb57 (&sb->s_type->i_mutex_key#12){++++}, at: inode_lock include/linux/fs.h:745 [inline] #2: 0000000001cbcb57 (&sb->s_type->i_mutex_key#12){++++}, at: ext4_file_write_iter+0x30b/0x1420 fs/ext4/file.c:235 2 locks held by syz-executor2/16447: #0: 000000008ffb221d (sb_writers#5){.+.+}, at: file_start_write include/linux/fs.h:2784 [inline] #0: 000000008ffb221d (sb_writers#5){.+.+}, at: vfs_fallocate+0x72a/0x940 fs/open.c:307 #1: 00000000936e7e46 (&sb->s_type->i_mutex_key#12){++++}, at: inode_lock include/linux/fs.h:745 [inline] #1: 00000000936e7e46 (&sb->s_type->i_mutex_key#12){++++}, at: ext4_fallocate+0x917/0x22e0 fs/ext4/extents.c:4957 2 locks held by syz-executor2/16448: #0: 000000008ffb221d (sb_writers#5){.+.+}, at: file_start_write include/linux/fs.h:2784 [inline] #0: 000000008ffb221d (sb_writers#5){.+.+}, at: vfs_fallocate+0x72a/0x940 fs/open.c:307 #1: 0000000001cbcb57 (&sb->s_type->i_mutex_key#12){++++}, at: inode_lock include/linux/fs.h:745 [inline] #1: 0000000001cbcb57 (&sb->s_type->i_mutex_key#12){++++}, at: ext4_fallocate+0x917/0x22e0 fs/ext4/extents.c:4957 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 982 Comm: khungtaskd Not tainted 4.19.0-rc4-next-20180921+ #77 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+0x1d3/0x2c4 lib/dump_stack.c:113 nmi_cpu_backtrace.cold.4+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1c2/0x22c 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:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline] watchdog+0xb39/0x1050 kernel/hung_task.c:265 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.143 msecs NMI backtrace for cpu 0 CPU: 0 PID: 16399 Comm: syz-executor2 Not tainted 4.19.0-rc4-next-20180921+ #77 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mext_check_coverage.constprop.13+0x28b/0x510 fs/ext4/move_extent.c:97 Code: 86 38 01 00 00 e8 a5 ec 5e ff 47 8d ac 25 00 80 ff ff 48 89 df e8 85 ba f2 ff 8b 9d 64 ff ff ff 44 89 ee 89 df e8 15 ed 5e ff <44> 39 eb 0f 86 a1 01 00 00 e8 77 ec 5e ff b9 00 00 00 40 44 89 ee RSP: 0018:ffff880185bb71c0 EFLAGS: 00000297 RAX: 0000000000000002 RBX: 00000000fffffff9 RCX: ffffffff821e64ab RDX: 0000000061dd5928 RSI: 00000000fffffff9 RDI: 0000000000000004 RBP: ffff880185bb7270 R08: ffff8801c8e24540 R09: ffffed003b5a5b57 R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: 0000000000008008 R13: 0000000061dd5928 R14: ffff88015c0d6670 R15: ffff880185bb73e0 FS: 00007f2ff885b700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000187b7e000 CR4: 00000000001426f0 Call Trace: move_extent_per_page fs/ext4/move_extent.c:323 [inline] ext4_move_extents+0x2784/0x3c20 fs/ext4/move_extent.c:669 ext4_ioctl+0x314f/0x4210 fs/ext4/ioctl.c:799 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2ff885ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f2ff885b6d4 RCX: 0000000000457679 RDX: 0000000020000240 RSI: 00000000c028660f RDI: 0000000000000005 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cf3d0 R14: 00000000004bf70f R15: 0000000000000000