bridge0: port 1(bridge_slave_0) entered disabled state device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode INFO: task rs:main Q:Reg:7830 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. rs:main Q:Reg D26960 7830 1 0x00000000 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 wb_wait_for_completion+0x175/0x1f0 fs/fs-writeback.c:222 __writeback_inodes_sb_nr+0x1df/0x270 fs/fs-writeback.c:2373 try_to_writeback_inodes_sb+0xda/0x110 fs/fs-writeback.c:2421 ext4_nonda_switch+0x1aa/0x1f0 fs/ext4/inode.c:3007 ext4_da_write_begin+0x155/0x10e0 fs/ext4/inode.c:3048 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295 ext4_file_write_iter+0x2fe/0xf20 fs/ext4/file.c:272 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe646aa71cd Code: c2 20 00 00 75 10 b8 01 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ae fc ff ff 48 89 04 24 b8 01 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 f7 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fe63fffe590 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fe630023fb0 RCX: 00007fe646aa71cd RDX: 0000000000000065 RSI: 00007fe630023fb0 RDI: 0000000000000006 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fe630023d30 R13: 00007fe63fffe5b0 R14: 00005576dc49e360 R15: 0000000000000065 Showing all locks held in the system: 4 locks held by kworker/u4:0/7: 1 lock held by khungtaskd/1570: #0: 00000000cf4b9a9e (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 3 locks held by kworker/u4:4/2926: #0: 0000000022d5bb85 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000007ecbb2cb ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 3 locks held by kworker/1:3/4718: #0: 00000000914ba802 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000006ac352a4 (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000008be2dc5a (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 1 lock held by in:imklog/7829: #0: 00000000e2a552c2 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 4 locks held by rs:main Q:Reg/7830: #0: 000000006c8b3d1c (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 #1: 00000000c7451137 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2779 [inline] #1: 00000000c7451137 (sb_writers#3){.+.+}, at: vfs_write+0x463/0x540 fs/read_write.c:548 #2: 000000008d8e7fc3 (&sb->s_type->i_mutex_key#10){+.+.}, at: inode_trylock include/linux/fs.h:768 [inline] #2: 000000008d8e7fc3 (&sb->s_type->i_mutex_key#10){+.+.}, at: ext4_file_write_iter+0x21f/0xf20 fs/ext4/file.c:238 #3: 00000000f29cadc2 (&type->s_umount_key#39){++++}, at: try_to_writeback_inodes_sb+0x1d/0x110 fs/fs-writeback.c:2418 1 lock held by syz-executor.5/29341: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/29343: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/29347: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/29352: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29354: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/29357: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29359: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/29371: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/29372: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/29373: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/29382: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29383: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/29385: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/29387: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29388: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/29400: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/29401: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/29404: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/29413: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/29414: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/29435: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29436: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29439: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/29442: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/29444: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29448: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/29461: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/29462: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/29469: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/29470: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/29479: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/29480: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/29489: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/29493: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29495: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29498: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/29516: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/29520: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/29521: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/29528: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/29529: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/29541: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/29551: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/29564: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/29566: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/29567: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 3 locks held by kworker/0:1/31816: #0: 00000000914ba802 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000cde5f3df ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000008be2dc5a (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 1 lock held by syz-executor.0/32070: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32168: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32169: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/32170: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32171: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32172: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/32173: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32175: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32174: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32181: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32184: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32194: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/32197: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32196: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/32202: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32203: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32204: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32206: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32208: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32210: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32212: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32482: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32483: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32494: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32497: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/32499: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32500: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/32501: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32503: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32504: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32505: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32506: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32507: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32508: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32510: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32520: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32521: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32523: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32524: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32525: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32534: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32537: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32536: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32540: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32547: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.5/32548: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32553: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32551: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32557: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32562: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32563: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32566: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32567: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32572: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32580: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32582: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32586: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32591: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32596: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32597: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32599: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32602: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32608: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32614: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32616: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32617: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32619: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32621: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32626: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32630: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32632: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32638: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32641: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32642: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32645: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32649: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32651: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32653: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32656: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32658: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32661: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32665: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32670: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32676: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32678: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32680: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32681: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32684: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32690: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32689: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32695: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32696: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32701: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32705: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32708: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32712: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32713: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32716: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32718: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32723: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32725: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32731: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32734: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32738: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/32743: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/32745: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32751: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/32754: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32758: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32760: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/32762: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/32763: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/301: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/306: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/307: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/308: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/313: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/316: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/322: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/323: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/327: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/331: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/333: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/338: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/342: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/344: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/349: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/351: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/362: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/358: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/363: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/364: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/369: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/371: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/375: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.3/378: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/381: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/383: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/387: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/390: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.1/395: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.0/397: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/426: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.4/427: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/437: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 1 lock held by syz-executor.2/438: #0: 000000000456bd51 (&sbi->s_writepages_rwsem){.+.+}, at: do_writepages+0xe5/0x290 mm/page-writeback.c:2344 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 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 CPU: 1 PID: 4695 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:_raw_spin_unlock_irqrestore+0x1/0xe0 kernel/locking/spinlock.c:183 Code: 89 fd be 01 00 00 00 48 8d 7f 18 e8 99 f9 31 f9 48 89 ef e8 91 90 32 f9 48 8b 7c 24 08 be 01 02 00 00 5d e9 e1 d0 1f f9 90 55 <48> 89 fd 48 83 c7 18 53 48 8b 54 24 10 48 89 f3 be 01 00 00 00 e8 RSP: 0018:ffff8880a0fbfb08 EFLAGS: 00000046 RAX: ffffffff8d3d7e40 RBX: 0000000000000000 RCX: ffffffff814bdebb RDX: 1ffffffff1a7afcb RSI: 0000000000000086 RDI: ffffffff8d3d7e48 RBP: ffff88823b843380 R08: 0000000000000000 R09: fffffbfff1a7afc9 R10: ffffffff8d3d7e4b R11: 0000000000000000 R12: 0000000000000286 R13: ffff8880b37a2cc0 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007fc83ebb08c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc83c0c1000 CR3: 00000000a1175000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:798 [inline] debug_check_no_obj_freed+0x201/0x490 lib/debugobjects.c:817 kmem_cache_free+0xff/0x260 mm/slab.c:3764 putname+0xe1/0x120 fs/namei.c:261 filename_parentat+0x4da/0x590 fs/namei.c:2399 filename_create+0x9e/0x490 fs/namei.c:3621 user_path_create fs/namei.c:3696 [inline] do_mkdirat+0xa0/0x2d0 fs/namei.c:3834 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc83de6b687 Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 RSP: 002b:00007ffe94466248 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffe94469160 RCX: 00007fc83de6b687 RDX: 00007fc83e8dca00 RSI: 00000000000001ed RDI: 000055d0146898a0 RBP: 00007ffe94466280 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffe94469160 R15: 00007ffe94466770