INFO: task hung in fuse

Kernel	Title	Repro	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	INFO: task hung in fuse_flush			1	1134d	1134d	0/1	auto-closed as invalid on 2021/07/16 16:14
upstream	INFO: task hung in fuse_flush (2) fuse			2	457d	466d	0/26	auto-obsoleted due to no activity on 2023/04/24 00:25
upstream	INFO: task hung in fuse_flush fuse			2	902d	990d	0/26	auto-closed as invalid on 2022/02/03 03:15
linux-4.14	INFO: task hung in fuse_flush	C	inconclusive	19	499d	819d	0/1	upstream: reported C repro on 2022/01/26 21:17
linux-4.19	INFO: task hung in fuse_flush (3)			109	457d	819d	0/1	upstream: reported on 2022/01/27 11:57
upstream	INFO: task hung in fuse_flush (3) fuse			1	210d	210d	0/26	auto-obsoleted due to no activity on 2023/12/26 21:09

ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 Bluetooth: hci2: command 0x0406 tx timeout ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task syz-executor.5:31016 blocked for more than 140 seconds. Not tainted 4.19.207-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28648 31016 8144 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: 0033:0x7f07a726a51b Code: Bad RIP value. RSP: 002b:00007ffe8942f990 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f07a726a51b RDX: 0000001b30b28064 RSI: ffffffff83772911 RDI: 0000000000000004 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b30b278d0 R10: 0000000000000948 R11: 0000000000000293 R12: 00007f07a73bcb60 R13: 00007f07a73bcb60 R14: 00007f07a73bbf60 R15: 00000000000f7911 INFO: task syz-executor.5:31026 blocked for more than 140 seconds. Not tainted 4.19.207-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28800 31026 8144 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 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 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 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 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: 0033:0x7f07a72b7709 Code: Bad RIP value. RSP: 002b:00007f07a480d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f07a73bc020 RCX: 00007f07a72b7709 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f07a7311cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe8942f92f R14: 00007f07a480d300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1571: #0: 00000000fc65ef2b (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by systemd-journal/4692: 1 lock held by in:imklog/7786: #0: 000000003ee33265 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 1 lock held by syz-executor.5/31016: #0: 00000000cf7deaaf (&sb->s_type->i_mutex_key#31){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 00000000cf7deaaf (&sb->s_type->i_mutex_key#31){+.+.}, at: fuse_flush+0x1fd/0x5b0 fs/fuse/file.c:421 2 locks held by syz-executor.5/31026: #0: 00000000b706bf09 (sb_writers#24){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000b706bf09 (sb_writers#24){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000cf7deaaf (&sb->s_type->i_mutex_key#31){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000cf7deaaf (&sb->s_type->i_mutex_key#31){+.+.}, at: fuse_open_common+0x1bc/0x2c0 fs/fuse/file.c:215 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.207-syzkaller #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+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: 4692 Comm: systemd-journal Not tainted 4.19.207-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_is_held+0x36/0x160 kernel/locking/lockdep.c:3721 Code: 65 4c 8b 3c 25 c0 df 01 00 41 56 49 89 fe 49 8d bf 80 08 00 00 41 55 48 89 fa 41 54 48 c1 ea 03 55 53 48 83 ec 08 0f b6 04 02 <89> 74 24 04 84 c0 74 08 3c 03 0f 8e ec 00 00 00 41 8b 87 80 08 00 RSP: 0018:ffff8880a0fefaa0 EFLAGS: 00000086 RAX: 0000000000000000 RBX: 0000000000000282 RCX: 0000000000000001 RDX: 1ffff110141fcdc0 RSI: 00000000ffffffff RDI: ffff8880a0fe6e00 RBP: ffffffff89f85f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a0fe6580 R13: 000000000002b0c0 R14: ffffffff89f85f60 R15: ffff8880a0fe6580 FS: 00007fdfc9dbd8c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdfc7400018 CR3: 00000000a10c6000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held_type+0x10d/0x210 kernel/locking/lockdep.c:3946 lock_is_held include/linux/lockdep.h:344 [inline] schedule_debug kernel/sched/core.c:3337 [inline] __schedule+0xf7f/0x2040 kernel/sched/core.c:3439 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_hrtimeout_range_clock+0x33e/0x390 kernel/time/hrtimer.c:2002 ep_poll+0xabb/0xcb0 fs/eventpoll.c:1817 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: 0033:0x7fdfc90862e3 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:00007fff83a83cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000555907e4f1e0 RCX: 00007fdfc90862e3 RDX: 0000000000000013 RSI: 00007fff83a83cc0 RDI: 0000000000000008 RBP: 00007fff83a83eb0 R08: 00007fff83b19000 R09: 00000137a1207cb1 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff83a83cc0 R13: 0000000000000001 R14: ffffffffffffffff R15: 0005ccde9099f601 ---------------- Code disassembly (best guess): 0: 65 4c 8b 3c 25 c0 df mov %gs:0x1dfc0,%r15 7: 01 00 9: 41 56 push %r14 b: 49 89 fe mov %rdi,%r14 e: 49 8d bf 80 08 00 00 lea 0x880(%r15),%rdi 15: 41 55 push %r13 17: 48 89 fa mov %rdi,%rdx 1a: 41 54 push %r12 1c: 48 c1 ea 03 shr $0x3,%rdx 20: 55 push %rbp 21: 53 push %rbx 22: 48 83 ec 08 sub $0x8,%rsp 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 2a: 89 74 24 04 mov %esi,0x4(%rsp) <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e ec 00 00 00 jle 0x126 3a: 41 rex.B 3b: 8b .byte 0x8b 3c: 87 .byte 0x87 3d: 80 08 00 orb $0x0,(%rax)