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 segctord:32683 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. segctord D30376 32683 2 0x80000000 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 nilfs_transaction_lock+0x1fb/0x8b0 fs/nilfs2/segment.c:362 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2479 [inline] nilfs_segctor_thread+0x3c0/0xf50 fs/nilfs2/segment.c:2563 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task segctord:582 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. segctord D30088 582 2 0x80000000 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 nilfs_transaction_lock+0x1fb/0x8b0 fs/nilfs2/segment.c:362 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2479 [inline] nilfs_segctor_thread+0x3c0/0xf50 fs/nilfs2/segment.c:2563 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: 3 locks held by kworker/u4:3/188: 1 lock held by khungtaskd/1570: #0: 00000000c3d75d48 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7835: #0: 000000009bc4ca38 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by kworker/0:4/9368: #0: 0000000013fbde5e ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000ae177d2b ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 3 locks held by kworker/1:4/9376: #0: 0000000033ebc2d9 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000e21549df ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989 3 locks held by kworker/0:1/22327: #0: 0000000033ebc2d9 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000ce23a664 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: addrconf_dad_work+0x9c/0x10a0 net/ipv6/addrconf.c:3989 4 locks held by syz-executor.1/32676: 1 lock held by segctord/32683: #0: 00000000dd025acb (&nilfs->ns_segctor_sem){++++}, at: nilfs_transaction_lock+0x1fb/0x8b0 fs/nilfs2/segment.c:362 6 locks held by syz-executor.4/583: 1 lock held by segctord/582: #0: 0000000065475b69 (&nilfs->ns_segctor_sem){++++}, at: nilfs_transaction_lock+0x1fb/0x8b0 fs/nilfs2/segment.c:362 2 locks held by kworker/0:0/854: #0: 00000000e45bf113 ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000087b87aa ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 3 locks held by kworker/0:3/7230: #0: 0000000013fbde5e ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000c4b09eea (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 5 locks held by kworker/u4:11/10709: #0: 00000000d2086558 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000bfa5e327 (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000572f0336 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521 #3: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: rtnl_lock_unregistering net/core/dev.c:9748 [inline] #3: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: default_device_exit_batch+0xea/0x3c0 net/core/dev.c:9786 #4: 0000000044816412 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #4: 0000000044816412 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 1 lock held by syz-executor.1/14180: #0: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 1 lock held by syz-executor.4/14190: #0: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 1 lock held by syz-executor.5/14213: #0: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000c3a1c40f (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 ============================================= NMI backtrace for cpu 1 CPU: 1 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 32676 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_release+0x40f/0x8b0 kernel/locking/lockdep.c:3930 Code: d2 0f 85 d4 03 00 00 48 c7 c0 88 82 f1 89 48 ba 00 00 00 00 00 fc ff df c7 83 84 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 <0f> 85 95 03 00 00 48 83 3d 7b 34 a6 08 00 0f 84 cc 01 00 00 48 8b RSP: 0018:ffff8880915e6930 EFLAGS: 00000046 RAX: 1ffffffff13e3051 RBX: ffff8880b3e244c0 RCX: 1ffff110167c49c7 RDX: dffffc0000000000 RSI: 0000000000000007 RDI: ffff8880b3e24d44 RBP: 0000000000000006 R08: 0000000000000000 R09: 0000000000000006 R10: 0000000000000000 R11: 000000000bf3c9dd R12: 1ffff110122bcd29 R13: e80b68fd1beab1a5 R14: ffff8880b3e244c0 R15: 0000000000000007 FS: 00007f8fe2838700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f9f82e2d10 CR3: 000000009c265000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: rcu_lock_release include/linux/rcupdate.h:247 [inline] rcu_read_unlock include/linux/rcupdate.h:681 [inline] find_get_entry+0x4f4/0x8a0 mm/filemap.c:1491 pagecache_get_page+0x56/0xd50 mm/filemap.c:1564 find_or_create_page include/linux/pagemap.h:322 [inline] grab_cache_page include/linux/pagemap.h:388 [inline] nilfs_grab_buffer+0xa5/0x560 fs/nilfs2/page.c:57 nilfs_btnode_submit_block+0x9f/0x830 fs/nilfs2/btnode.c:64 __nilfs_btree_get_block+0xca/0x680 fs/nilfs2/btree.c:478 nilfs_btree_do_lookup+0x3eb/0x7c0 fs/nilfs2/btree.c:567 nilfs_btree_lookup+0x47/0x110 fs/nilfs2/btree.c:684 nilfs_bmap_lookup_at_level+0xcd/0x3e0 fs/nilfs2/bmap.c:69 nilfs_bmap_lookup fs/nilfs2/bmap.h:170 [inline] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 fs/nilfs2/mdt.c:142 nilfs_mdt_read_block+0x96/0x3e0 fs/nilfs2/mdt.c:175 nilfs_mdt_get_block+0xe6/0xd40 fs/nilfs2/mdt.c:250 nilfs_palloc_get_block+0xc4/0x2b0 fs/nilfs2/alloc.c:216 nilfs_palloc_get_entry_block+0x17b/0x230 fs/nilfs2/alloc.c:318 nilfs_dat_translate+0x7e/0x480 fs/nilfs2/dat.c:391 nilfs_bmap_lookup_at_level+0x237/0x3e0 fs/nilfs2/bmap.c:75 nilfs_bmap_lookup fs/nilfs2/bmap.h:170 [inline] nilfs_mdt_submit_block.constprop.0+0x1a5/0xaa0 fs/nilfs2/mdt.c:142 nilfs_mdt_read_block+0x96/0x3e0 fs/nilfs2/mdt.c:175 nilfs_mdt_get_block+0xe6/0xd40 fs/nilfs2/mdt.c:250 nilfs_palloc_get_block+0xc4/0x2b0 fs/nilfs2/alloc.c:216 nilfs_palloc_get_entry_block+0x17b/0x230 fs/nilfs2/alloc.c:318 nilfs_ifile_create_inode+0xea/0x240 fs/nilfs2/ifile.c:66 nilfs_new_inode+0x1dc/0x760 fs/nilfs2/inode.c:353 nilfs_create fs/nilfs2/namei.c:85 [inline] nilfs_create+0xfe/0x2f0 fs/nilfs2/namei.c:75 lookup_open+0x893/0x1a20 fs/namei.c:3235 do_last fs/namei.c:3327 [inline] path_openat+0x1094/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f8fe42c5639 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8fe2838168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f8fe43e5f80 RCX: 00007f8fe42c5639 RDX: 000000000000275a RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 00007f8fe4320a41 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff30cdb09f R14: 00007f8fe2838300 R15: 0000000000022000