INFO: task syz-executor.5:5627 blocked for more than 143 seconds.
Not tainted 6.3.0-rc2-syzkaller-00006-gfc89d7fb499b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:28024 pid:5627 ppid:5112 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x179d/0x4690 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:758 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x7ba/0x3170 fs/namei.c:3712
do_filp_open+0x234/0x490 fs/namei.c:3742
do_sys_openat2+0x13f/0x500 fs/open.c:1348
do_sys_open fs/open.c:1364 [inline]
__do_sys_creat fs/open.c:1440 [inline]
__se_sys_creat fs/open.c:1434 [inline]
__x64_sys_creat+0x123/0x160 fs/open.c:1434
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4d9008c0f9
RSP: 002b:00007f4d90d1d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f4d901ac050 RCX: 00007f4d9008c0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f4d900e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdf1309a8f R14: 00007f4d90d1d300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25f30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf26730 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8cf25d60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by udevd/4434:
2 locks held by getty/4744:
#0: ffff88802ceec098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
2 locks held by syz-fuzzer/5088:
3 locks held by kworker/u4:4/3157:
5 locks held by syz-executor.5/5612:
2 locks held by syz-executor.5/5627:
#0: ffff888028780460 (sb_writers#15){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:394
#1: ffff888085ea6928 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff888085ea6928 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: open_last_lookups fs/namei.c:3481 [inline]
#1: ffff888085ea6928 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: path_openat+0x7ba/0x3170 fs/namei.c:3712
1 lock held by syz-executor.4/8729:
#0: ffff8880b983be98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:547
1 lock held by syz-executor.2/8737:
#0: ffff8880b983be98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:547
1 lock held by syz-executor.2/8743:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc2-syzkaller-00006-gfc89d7fb499b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf9d/0xfe0 kernel/hung_task.c:379
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5612 Comm: syz-executor.5 Not tainted 6.3.0-rc2-syzkaller-00006-gfc89d7fb499b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:folio_test_active include/linux/page-flags.h:481 [inline]
RIP: 0010:folio_mark_accessed+0x1a8/0xf00 mm/swap.c:473
Code: e6 01 31 ff e8 89 a9 cc ff 48 83 e3 01 0f 85 e9 06 00 00 0f 1f 44 00 00 e8 35 a5 cc ff 4c 89 ff be 08 00 00 00 e8 08 9a 22 00 <48> b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 74 08 4c 89 ff e8
RSP: 0018:ffffc90004696640 EFLAGS: 00000256
RAX: ffffffff81bea201 RBX: 0000000000000000 RCX: ffffffff81bea258
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea0001d18bc0
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffff940003a3179
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002
R13: 1ffffd40003a3178 R14: ffffea0001d18bc8 R15: ffffea0001d18bc0
FS: 00007f4d90d3e700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c03917c000 CR3: 0000000077985000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__nilfs_get_page_block fs/nilfs2/page.c:42 [inline]
nilfs_grab_buffer+0x3d3/0x540 fs/nilfs2/page.c:61
nilfs_btnode_submit_block+0xdf/0x720 fs/nilfs2/btnode.c:81
__nilfs_btree_get_block+0x18d/0x7e0 fs/nilfs2/btree.c:480
nilfs_btree_do_lookup+0x57b/0xce0 fs/nilfs2/btree.c:578
nilfs_btree_lookup+0x1ac/0x1e0 fs/nilfs2/btree.c:695
nilfs_bmap_lookup_at_level+0x10b/0x370 fs/nilfs2/bmap.c:69
nilfs_bmap_lookup fs/nilfs2/bmap.h:170 [inline]
nilfs_mdt_submit_block+0x2a4/0x880 fs/nilfs2/mdt.c:142
nilfs_mdt_read_block+0xeb/0x430 fs/nilfs2/mdt.c:176
nilfs_mdt_get_block+0x11d/0xb20 fs/nilfs2/mdt.c:251
nilfs_palloc_get_block+0x142/0x240 fs/nilfs2/alloc.c:216
nilfs_palloc_get_entry_block+0x8e/0xa0 fs/nilfs2/alloc.c:318
nilfs_dat_translate+0xb6/0x560 fs/nilfs2/dat.c:416
nilfs_bmap_lookup_at_level+0x1fe/0x370 fs/nilfs2/bmap.c:75
nilfs_bmap_lookup fs/nilfs2/bmap.h:170 [inline]
nilfs_mdt_submit_block+0x2a4/0x880 fs/nilfs2/mdt.c:142
nilfs_mdt_read_block+0xeb/0x430 fs/nilfs2/mdt.c:176
nilfs_mdt_get_block+0x11d/0xb20 fs/nilfs2/mdt.c:251
nilfs_palloc_get_block+0x142/0x240 fs/nilfs2/alloc.c:216
nilfs_palloc_get_desc_block fs/nilfs2/alloc.c:265 [inline]
nilfs_palloc_prepare_alloc_entry+0x3e4/0xfe0 fs/nilfs2/alloc.c:524
nilfs_ifile_create_inode+0x9d/0x2d0 fs/nilfs2/ifile.c:64
nilfs_new_inode+0x257/0xa30 fs/nilfs2/inode.c:347
nilfs_create+0xfd/0x2c0 fs/nilfs2/namei.c:85
lookup_open fs/namei.c:3416 [inline]
open_last_lookups fs/namei.c:3484 [inline]
path_openat+0x13df/0x3170 fs/namei.c:3712
do_filp_open+0x234/0x490 fs/namei.c:3742
do_sys_openat2+0x13f/0x500 fs/open.c:1348
do_sys_open fs/open.c:1364 [inline]
__do_sys_open fs/open.c:1372 [inline]
__se_sys_open fs/open.c:1368 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1368
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4d9008c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4d90d3e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f4d901abf80 RCX: 00007f4d9008c0f9
RDX: 0000000000000000 RSI: 000000000014da42 RDI: 00000000200000c0
RBP: 00007f4d900e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdf1309a8f R14: 00007f4d90d3e300 R15: 0000000000022000