INFO: task segctord:15635 blocked for more than 143 seconds.
Not tainted 6.1.0-rc3-syzkaller-00239-g10d916c86eca #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord state:D stack:29712 pid:15635 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xae9/0x53f0 kernel/sched/core.c:6503
schedule+0xda/0x1b0 kernel/sched/core.c:6579
rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write_common kernel/locking/rwsem.c:1302 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
nilfs_transaction_lock+0x266/0x410 fs/nilfs2/segment.c:357
nilfs_segctor_thread_construct fs/nilfs2/segment.c:2486 [inline]
nilfs_segctor_thread+0x3b8/0xf30 fs/nilfs2/segment.c:2570
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8bf87df0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8bf87af0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
#0: ffffffff8bf88940 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6494
2 locks held by getty/3282:
#0: ffff88814b1d3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:9/4638:
6 locks held by syz-executor.1/15633:
1 lock held by segctord/15635:
#0: ffff888076fd42a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x266/0x410 fs/nilfs2/segment.c:357
3 locks held by kworker/u4:15/16993:
1 lock held by syz-executor.0/26914:
#0: ffff8880b9b3a118 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:537
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc3-syzkaller-00239-g10d916c86eca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x32f/0x3c0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xc71/0xfc0 kernel/hung_task.c:377
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 15633 Comm: syz-executor.1 Not tainted 6.1.0-rc3-syzkaller-00239-g10d916c86eca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:stack_access_ok+0x10/0x1d0 arch/x86/kernel/unwind_orc.c:343
Code: 93 00 eb a8 48 89 ef e8 3e 27 93 00 eb c4 48 89 ef e8 34 27 93 00 eb de 66 90 48 b8 00 00 00 00 00 fc ff df 41 56 41 55 41 54 <49> 89 d4 48 89 fa 55 48 c1 ea 03 48 89 f5 53 48 89 fb 48 83 ec 08
RSP: 0018:ffffc9000488e930 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff8e6d6609
RDX: 0000000000000008 RSI: ffffc9000488ecf8 RDI: ffffc9000488e9c0
RBP: ffffc9000488ea08 R08: ffffffff8e6d6604 R09: ffffc9000488e9f4
R10: fffff52000911d43 R11: ffffc9000488ecf8 R12: ffffc9000488e9f5
R13: ffffc9000488e9c0 R14: ffffc9000488ed00 R15: ffffffff8e6d6608
FS: 00007f7a3a4bd700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc643982058 CR3: 000000001c93c000 CR4: 0000000000350ee0
Call Trace:
deref_stack_reg arch/x86/kernel/unwind_orc.c:357 [inline]
unwind_next_frame+0xc3f/0x1cc0 arch/x86/kernel/unwind_orc.c:539
arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
kasan_set_track+0x21/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2a/0x40 mm/kasan/generic.c:511
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1724 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1750
slab_free mm/slub.c:3661 [inline]
kmem_cache_free+0xea/0x5b0 mm/slub.c:3683
nilfs_btree_free_path fs/nilfs2/btree.c:52 [inline]
nilfs_btree_lookup+0xcd/0x110 fs/nilfs2/btree.c:688
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+0x1a1/0xb40 fs/nilfs2/mdt.c:142
nilfs_mdt_read_block+0x92/0x3c0 fs/nilfs2/mdt.c:176
nilfs_mdt_get_block+0xe3/0xe00 fs/nilfs2/mdt.c:251
nilfs_palloc_get_block+0xc4/0x2b0 fs/nilfs2/alloc.c:216
nilfs_palloc_get_entry_block+0x167/0x1d0 fs/nilfs2/alloc.c:318
nilfs_dat_translate+0x7e/0x470 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+0x1a1/0xb40 fs/nilfs2/mdt.c:142
nilfs_mdt_read_block+0x92/0x3c0 fs/nilfs2/mdt.c:176
nilfs_mdt_get_block+0xe3/0xe00 fs/nilfs2/mdt.c:251
nilfs_palloc_get_block+0xc4/0x2b0 fs/nilfs2/alloc.c:216
nilfs_palloc_get_entry_block+0x167/0x1d0 fs/nilfs2/alloc.c:318
nilfs_ifile_create_inode+0xec/0x260 fs/nilfs2/ifile.c:66
nilfs_new_inode+0x1ff/0x9b0 fs/nilfs2/inode.c:347
nilfs_create fs/nilfs2/namei.c:85 [inline]
nilfs_create+0xfe/0x300 fs/nilfs2/namei.c:75
lookup_open.isra.0+0xf05/0x12a0 fs/namei.c:3413
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x996/0x2860 fs/namei.c:3710
do_filp_open+0x1b6/0x400 fs/namei.c:3740
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7a3968b5a9
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:00007f7a3a4bd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f7a397abf80 RCX: 00007f7a3968b5a9
RDX: 000000000000275a RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 00007f7a396e67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd496e8b0f R14: 00007f7a3a4bd300 R15: 0000000000022000