INFO: task syz-executor.2:13289 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. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.2'. syz-executor.2 D28648 13289 8175 0x00000004 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 inode_lock include/linux/fs.h:748 [inline] fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 filp_close+0xb4/0x160 fs/open.c:1162 __close_fd+0x133/0x200 fs/file.c:636 __do_sys_close fs/open.c:1181 [inline] __se_sys_close fs/open.c:1179 [inline] __x64_sys_close+0x69/0x100 fs/open.c:1179 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7feb764e8f5b Code: Bad RIP value. RSP: 002b:00007ffcbb9f5a20 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007feb764e8f5b RDX: 0000001b2fb20000 RSI: 0000001b2fb26538 RDI: 0000000000000004 RBP: 00007feb76658980 R08: 0000000000000000 R09: 000000003253460c XFS (loop3): Mounting V4 Filesystem R10: 001be8f5cacd36a4 R11: 0000000000000293 R12: 0000000000051487 R13: 00007ffcbb9f5b20 R14: 00007feb76657120 R15: 0000000000000032 INFO: task syz-executor.2:13297 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. syz-executor.2 D27376 13297 8175 0x00000004 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 XFS (loop3): Ending clean mount fuse_wait_on_page_writeback fs/fuse/file.c:383 [inline] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 fs/fuse/file.c:379 XFS (loop3): Quotacheck needed: Please wait. fuse_launder_page fs/fuse/file.c:2033 [inline] fuse_launder_page+0xb6/0xe0 fs/fuse/file.c:2026 do_launder_page mm/truncate.c:655 [inline] invalidate_inode_pages2_range+0x795/0x1110 mm/truncate.c:725 XFS (loop3): Quotacheck: Done. audit: type=1800 audit(1672127529.838:232): pid=20263 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="file1" dev="loop3" ino=38 res=0 fuse_finish_open+0x2e2/0x590 fs/fuse/file.c:182 fuse_open_common+0x236/0x2c0 fs/fuse/file.c:222 do_dentry_open+0x4aa/0x1160 fs/open.c:796 audit: type=1800 audit(1672127529.918:233): pid=20341 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="loop3" ino=42 res=0 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 audit: type=1800 audit(1672127529.938:234): pid=20341 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="file1" dev="loop3" ino=38 res=0 audit: type=1800 audit(1672127529.958:235): pid=20341 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="file1" dev="loop3" ino=38 res=0 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 audit: type=1800 audit(1672127530.018:236): pid=20342 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="loop3" ino=42 res=0 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: 0033:0x7feb765370a9 Code: Bad RIP value. RSP: 002b:00007feb74aa9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007feb76656f80 RCX: 00007feb765370a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007feb76592ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcbb9f59bf R14: 00007feb74aa9300 R15: 0000000000022000 INFO: task syz-executor.2:13307 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. syz-executor.2 D28856 13307 8175 0x00000004 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 io_schedule+0xb5/0x120 kernel/sched/core.c:5181 wait_on_page_bit_common mm/filemap.c:1123 [inline] __lock_page+0x316/0x460 mm/filemap.c:1296 lock_page include/linux/pagemap.h:484 [inline] invalidate_inode_pages2_range+0xb3f/0x1110 mm/truncate.c:713 fuse_finish_open+0x2e2/0x590 fs/fuse/file.c:182 fuse_open_common+0x254/0x2c0 fs/fuse/file.c:222 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 libceph: resolve 'd>' (ret=-3): failed libceph: parse_ips bad ip '[d>:],0Ýq ÷Ø 6' 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: 0033:0x7feb765370a9 Code: Bad RIP value. RSP: 002b:00007feb74a88168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007feb76657050 RCX: 00007feb765370a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00007feb76592ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcbb9f59bf R14: 00007feb74a88300 R15: 0000000000022000 Showing all locks held in the system: XFS (loop3): Unmounting Filesystem 3 locks held by kworker/u4:3/210: libceph: resolve 'd>' (ret=-3): failed libceph: parse_ips bad ip '[d>:],0Ýq ÷Ø 6' 1 lock held by khungtaskd/1571: #0: 0000000070014b82 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 3 locks held by systemd-udevd/4702: 1 lock held by in:imklog/7823: #0: 0000000051de50f8 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by agetty/8045: #0: 00000000109bc4bf (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 0000000079ed7c04 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 4 locks held by kworker/u4:8/9573: #0: 00000000a52a5725 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000d65c9518 (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000007f03b369 (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521 #3: 0000000024f27f21 (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #3: 0000000024f27f21 (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 1 lock held by syz-executor.2/13289: #0: 000000008679f855 (&sb->s_type->i_mutex_key#24){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 000000008679f855 (&sb->s_type->i_mutex_key#24){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.2/13307: #0: 000000000084bef8 (sb_writers#17){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000000084bef8 (sb_writers#17){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000008679f855 (&sb->s_type->i_mutex_key#24){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000008679f855 (&sb->s_type->i_mutex_key#24){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 1 lock held by syz-executor.0/20362: #0: 00000000b864f86d (rcu_preempt_state.barrier_mutex){+.+.}, at: _rcu_barrier+0x59/0x3e0 kernel/rcu/tree.c:3430 1 lock held by syz-executor.2/20443: #0: 00000000f98b2868 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe10 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2824 1 lock held by syz-executor.2/20449: #0: 00000000f98b2868 (&vcpu->mutex){+.+.}, at: kvm_vcpu_ioctl+0x175/0xe10 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2824 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1571 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: 4691 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_irq include/linux/spinlock_api_smp.h:166 [inline] RIP: 0010:_raw_spin_unlock_irq+0x1/0x80 kernel/locking/spinlock.c:192 Code: c7 88 82 f1 89 e8 2f 11 7f f9 eb 80 48 c7 c7 88 82 f1 89 e8 21 11 7f f9 eb c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 <48> 8b 54 24 08 be 01 00 00 00 48 89 fd 48 83 c7 18 e8 89 f8 31 f9 RSP: 0018:ffff8880a0ea7ce0 EFLAGS: 00000093 RAX: ffff8880a0e98540 RBX: ffff8880a1566300 RCX: ffffffff814bdebb RDX: 0000000000000000 RSI: ffffffff81b4ec0e RDI: ffff8880a1566380 RBP: ffff8880a0ea7eb0 R08: 0000000000000001 R09: ffffed10142acc70 R10: ffff8880a1566383 R11: 0000000000000000 R12: ffff8880a1566410 R13: ffff8880a1566380 R14: ffffffffffffffff R15: 0000000000000000 FS: 00007f50f33da8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f50f0918000 CR3: 00000000a13cc000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_unlock_irq include/linux/spinlock.h:379 [inline] ep_poll+0x336/0xcb0 fs/eventpoll.c:1830 do_epoll_wait+0x1aa/0x200 fs/eventpoll.c:2190 __do_sys_epoll_wait fs/eventpoll.c:2200 [inline] __se_sys_epoll_wait fs/eventpoll.c:2197 [inline] __x64_sys_epoll_wait+0x93/0xf0 fs/eventpoll.c:2197 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f50f26a32e3 Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 29 54 2b 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 0b c2 00 00 48 89 04 24 RSP: 002b:00007ffd396127d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 00005652c6c6a1e0 RCX: 00007f50f26a32e3 RDX: 0000000000000013 RSI: 00007ffd396127e0 RDI: 0000000000000008 RBP: 00007ffd396129d0 R08: 00007ffd397cb000 R09: 0000007ddd67277a R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd396127e0 R13: 0000000000000001 R14: ffffffffffffffff R15: 0005f0ca87862f37 IPVS: ftp: loaded support on port[0] = 21 x_tables: duplicate underflow at hook 1 libceph: resolve 'd>' (ret=-3): failed