INFO: task syz-executor.2:5023 blocked for more than 143 seconds. Not tainted 5.11.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:29280 pid: 5023 ppid: 8473 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106 __down_write_common kernel/locking/rwsem.c:1261 [inline] __down_write_common kernel/locking/rwsem.c:1258 [inline] __down_write kernel/locking/rwsem.c:1270 [inline] down_write+0x132/0x150 kernel/locking/rwsem.c:1407 inode_lock include/linux/fs.h:773 [inline] vfs_setxattr+0x117/0x320 fs/xattr.c:290 setxattr+0x1ff/0x290 fs/xattr.c:553 path_setxattr+0x170/0x190 fs/xattr.c:572 __do_sys_lsetxattr fs/xattr.c:594 [inline] __se_sys_lsetxattr fs/xattr.c:590 [inline] __x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:590 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 RSP: 002b:00007f64174fcc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 00000000200000c0 RBP: 000000000119c078 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034 R13: 00007ffdab96290f R14: 00007f64174fd9c0 R15: 000000000119c034 INFO: task syz-executor.2:5027 blocked for more than 143 seconds. Not tainted 5.11.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:29592 pid: 5027 ppid: 8473 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106 __down_write_common kernel/locking/rwsem.c:1261 [inline] __down_write_common kernel/locking/rwsem.c:1258 [inline] __down_write kernel/locking/rwsem.c:1270 [inline] down_write+0x132/0x150 kernel/locking/rwsem.c:1407 inode_lock include/linux/fs.h:773 [inline] vfs_setxattr+0x117/0x320 fs/xattr.c:290 setxattr+0x1ff/0x290 fs/xattr.c:553 path_setxattr+0x170/0x190 fs/xattr.c:572 __do_sys_setxattr fs/xattr.c:587 [inline] __se_sys_setxattr fs/xattr.c:583 [inline] __x64_sys_setxattr+0xc0/0x160 fs/xattr.c:583 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 RSP: 002b:00007f64174dbc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000020000000 RBP: 000000000119c120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c0dc R13: 00007ffdab96290f R14: 00007f64174dc9c0 R15: 000000000119c0dc INFO: task syz-executor.2:5030 blocked for more than 144 seconds. Not tainted 5.11.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28512 pid: 5030 ppid: 8473 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106 __down_write_common kernel/locking/rwsem.c:1261 [inline] __down_write_common kernel/locking/rwsem.c:1258 [inline] __down_write kernel/locking/rwsem.c:1270 [inline] down_write+0x132/0x150 kernel/locking/rwsem.c:1407 inode_lock include/linux/fs.h:773 [inline] vfs_setxattr+0x117/0x320 fs/xattr.c:290 setxattr+0x1ff/0x290 fs/xattr.c:553 path_setxattr+0x170/0x190 fs/xattr.c:572 __do_sys_setxattr fs/xattr.c:587 [inline] __se_sys_setxattr fs/xattr.c:583 [inline] __x64_sys_setxattr+0xc0/0x160 fs/xattr.c:583 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 RSP: 002b:00007f64174bac68 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000020000000 RBP: 000000000119c1c8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c184 R13: 00007ffdab96290f R14: 00007f64174bb9c0 R15: 000000000119c184 INFO: task syz-executor.2:5083 blocked for more than 144 seconds. Not tainted 5.11.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:26960 pid: 5083 ppid: 8473 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106 __down_write_common kernel/locking/rwsem.c:1261 [inline] __down_write_common kernel/locking/rwsem.c:1258 [inline] __down_write kernel/locking/rwsem.c:1270 [inline] down_write+0x132/0x150 kernel/locking/rwsem.c:1407 inode_lock include/linux/fs.h:773 [inline] lock_mount+0x8a/0x2e0 fs/namespace.c:2195 do_new_mount_fc fs/namespace.c:2821 [inline] do_new_mount fs/namespace.c:2880 [inline] path_mount+0x1787/0x20c0 fs/namespace.c:3208 do_mount fs/namespace.c:3221 [inline] __do_sys_mount fs/namespace.c:3429 [inline] __se_sys_mount fs/namespace.c:3406 [inline] __x64_sys_mount+0x27f/0x300 fs/namespace.c:3406 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 RSP: 002b:00007f6417499c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219 RDX: 0000000020002000 RSI: 00000000200042c0 RDI: 0000000000000000 RBP: 000000000119c270 R08: 00000000200021c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c22c R13: 00007ffdab96290f R14: 00007f641749a9c0 R15: 000000000119c22c INFO: task syz-executor.2:5095 blocked for more than 145 seconds. Not tainted 5.11.0-rc2-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:29072 pid: 5095 ppid: 8473 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4313 [inline] __schedule+0x90c/0x21a0 kernel/sched/core.c:5064 schedule+0xcf/0x270 kernel/sched/core.c:5143 rwsem_down_write_slowpath+0x7e5/0x1200 kernel/locking/rwsem.c:1106 __down_write_common kernel/locking/rwsem.c:1261 [inline] __down_write_common kernel/locking/rwsem.c:1258 [inline] __down_write kernel/locking/rwsem.c:1270 [inline] down_write+0x132/0x150 kernel/locking/rwsem.c:1407 inode_lock include/linux/fs.h:773 [inline] vfs_setxattr+0x117/0x320 fs/xattr.c:290 setxattr+0x1ff/0x290 fs/xattr.c:553 path_setxattr+0x170/0x190 fs/xattr.c:572 __do_sys_lsetxattr fs/xattr.c:594 [inline] __se_sys_lsetxattr fs/xattr.c:590 [inline] __x64_sys_lsetxattr+0xbd/0x150 fs/xattr.c:590 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 RSP: 002b:00007f6417478c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 00000000200000c0 RBP: 000000000119c318 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c2d4 R13: 00007ffdab96290f R14: 00007f64174799c0 R15: 000000000119c2d4 Showing all locks held in the system: 1 lock held by khungtaskd/1646: #0: ffffffff8b363860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6254 1 lock held by in:imklog/8360: #0: ffff88801c8668b0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:947 3 locks held by syz-executor.2/5018: 2 locks held by syz-executor.2/5023: #0: ffff888014dbe460 (sb_writers#23){.+.+}-{0:0}, at: path_setxattr+0xb5/0x190 fs/xattr.c:570 #1: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: vfs_setxattr+0x117/0x320 fs/xattr.c:290 2 locks held by syz-executor.2/5027: #0: ffff888014dbe460 (sb_writers#23){.+.+}-{0:0}, at: path_setxattr+0xb5/0x190 fs/xattr.c:570 #1: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: vfs_setxattr+0x117/0x320 fs/xattr.c:290 2 locks held by syz-executor.2/5030: #0: ffff888014dbe460 (sb_writers#23){.+.+}-{0:0}, at: path_setxattr+0xb5/0x190 fs/xattr.c:570 #1: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: vfs_setxattr+0x117/0x320 fs/xattr.c:290 1 lock held by syz-executor.2/5083: #0: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #0: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lock_mount+0x8a/0x2e0 fs/namespace.c:2195 2 locks held by syz-executor.2/5095: #0: ffff888014dbe460 (sb_writers#23){.+.+}-{0:0}, at: path_setxattr+0xb5/0x190 fs/xattr.c:570 #1: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:773 [inline] #1: ffff888080c7c8d0 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: vfs_setxattr+0x117/0x320 fs/xattr.c:290 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1646 Comm: khungtaskd Not tainted 5.11.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:120 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline] watchdog+0xd43/0xfa0 kernel/hung_task.c:294 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5018 Comm: syz-executor.2 Not tainted 5.11.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:90 [inline] RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:82 [inline] RIP: 0010:lock_acquire kernel/locking/lockdep.c:5413 [inline] RIP: 0010:lock_acquire+0x22f/0x740 kernel/locking/lockdep.c:5402 Code: 85 fd 00 00 00 65 48 8b 14 25 00 f0 01 00 48 8d ba 84 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 a3 03 00 00 8b RSP: 0018:ffffc90006aa7390 EFLAGS: 00000a03 RAX: dffffc0000000000 RBX: 1ffff92000d54e74 RCX: 0000000000000000 RDX: ffff888079942140 RSI: 0000000000000001 RDI: ffff888079942ac4 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8cef794f R10: fffffbfff19def29 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888080c7c820 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f641751e700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f88a901a000 CR3: 0000000036cae000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] find_inode+0x109/0x220 fs/inode.c:826 ilookup5_nowait+0x6f/0xb0 fs/inode.c:1334 ilookup5 fs/inode.c:1363 [inline] iget5_locked+0x41/0x220 fs/inode.c:1144 fuse_iget+0x271/0x610 fs/fuse/inode.c:342 fuse_lookup_name+0x447/0x630 fs/fuse/dir.c:439 fuse_lookup.part.0+0xdf/0x390 fs/fuse/dir.c:469 fuse_lookup fs/fuse/dir.c:465 [inline] fuse_atomic_open+0x2de/0x440 fs/fuse/dir.c:621 atomic_open fs/namei.c:2972 [inline] lookup_open.isra.0+0xc09/0x1350 fs/namei.c:3078 open_last_lookups fs/namei.c:3180 [inline] path_openat+0x96d/0x2730 fs/namei.c:3368 do_filp_open+0x17e/0x3c0 fs/namei.c:3398 do_sys_openat2+0x16d/0x420 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_openat fs/open.c:1204 [inline] __se_sys_openat fs/open.c:1199 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1199 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f641751dc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020004400 RDI: ffffffffffffff9c RBP: 000000000119bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffdab96290f R14: 00007f641751e9c0 R15: 000000000119bf8c