INFO: task bch-reclaim/loo:6686 blocked for more than 143 seconds.
Not tainted 6.14.0-rc2-syzkaller-00039-g09fbf3d50205 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:bch-reclaim/loo state:D stack:26864 pid:6686 tgid:6686 ppid:2 task_flags:0x200040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
__mutex_lock_common kernel/locking/mutex.c:662 [inline]
__mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
bch2_journal_reclaim_thread+0x16d/0x570 fs/bcachefs/journal_reclaim.c:759
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
4 locks held by kworker/u8:7/3467:
#0: ffff888027505948 ((wq_completion)btree_update){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff888027505948 ((wq_completion)btree_update){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc9000c3b7c60 ((work_completion)(&c->btree_interior_update_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc9000c3b7c60 ((work_completion)(&c->btree_interior_update_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffff88805de84378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#2: ffff88805de84378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#2: ffff88805de84378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3202
#3: ffff88805dea66d0 (&c->gc_lock){++++}-{4:4}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1180
2 locks held by getty/5581:
#0: ffff8880360720a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
6 locks held by syz-executor/5839:
#0: ffff88802ead60e0 (&type->s_umount_key#96){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802ead60e0 (&type->s_umount_key#96){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802ead60e0 (&type->s_umount_key#96){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505
#1: ffff88805de80278 (&c->state_lock){+.+.}-{4:4}, at: __bch2_fs_stop+0xfd/0x5c0 fs/bcachefs/super.c:633
#2: ffff88805decb028 (&j->reclaim_lock){+.+.}-{4:4}, at: journal_flush_done+0x7b/0x400 fs/bcachefs/journal_reclaim.c:870
#3: ffff88805de84378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#3: ffff88805de84378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#3: ffff88805de84378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7e4/0xd30 fs/bcachefs/btree_iter.c:3377
#4: ffff88805de84378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:164 [inline]
#4: ffff88805de84378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:256 [inline]
#4: ffff88805de84378 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0x9a/0x1a0 fs/bcachefs/btree_iter.c:3202
#5: ffff88805dea66d0 (&c->gc_lock){++++}-{4:4}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1180
1 lock held by bch-reclaim/loo/6686:
#0: ffff88805decb028 (&j->reclaim_lock){+.+.}-{4:4}, at: bch2_journal_reclaim_thread+0x16d/0x570 fs/bcachefs/journal_reclaim.c:759
1 lock held by syz.7.442/9652:
#0: ffff88802ead60e0 (&type->s_umount_key#96){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88802ead60e0 (&type->s_umount_key#96){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
3 locks held by syz.5.455/9819:
#0: ffff88802507cb60 (&lo->lo_mutex){+.+.}-{4:4}, at: loop_set_status+0x2a/0x9e0 drivers/block/loop.c:1261
#1: ffff888143bf1c38 (&q->q_usage_counter(io)#22){++++}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:910 [inline]
#1: ffff888143bf1c38 (&q->q_usage_counter(io)#22){++++}-{0:0}, at: loop_set_status+0x25e/0x9e0 drivers/block/loop.c:1277
#2: ffff888143bf1c70 (&q->q_usage_counter(queue)#6){+.+.}-{0:0}, at: blk_mq_freeze_queue include/linux/blk-mq.h:910 [inline]
#2: ffff888143bf1c70 (&q->q_usage_counter(queue)#6){+.+.}-{0:0}, at: loop_set_status+0x25e/0x9e0 drivers/block/loop.c:1277
2 locks held by syz.5.455/9826:
#0: ffff88802506d4c8 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xf0/0xc50 block/bdev.c:903
#1: ffff88802507cb60 (&lo->lo_mutex){+.+.}-{4:4}, at: lo_open+0x4d/0xd0 drivers/block/loop.c:1727
1 lock held by syz.2.456/9824:
#0: ffff88806cfd60e0 (&type->s_umount_key#62/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 fs/super.c:344
1 lock held by cmp/9850:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-rc2-syzkaller-00039-g09fbf3d50205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9852 Comm: rm Not tainted 6.14.0-rc2-syzkaller-00039-g09fbf3d50205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__lock_acquire+0x13ac/0x2100
Code: 00 00 4c 89 ef 48 8b 74 24 38 44 89 fa 48 89 e9 e8 69 9e 00 00 45 31 f6 85 c0 0f 84 81 00 00 00 48 ba 00 00 00 00 00 fc ff df <48> 8b 44 24 18 0f b6 04 10 84 c0 0f 85 5d 08 00 00 48 8b 44 24 10
RSP: 0000:ffffc900030a74f0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffffffff93c40108 RCX: 6a24b78891882c00
RDX: dffffc0000000000 RSI: ffff8880291ce5b8 RDI: ffff8880291cda00
RBP: d6e3d700c779dbf6 R08: ffffffff942c6847 R09: 1ffffffff2858d08
R10: dffffc0000000000 R11: fffffbfff2858d09 R12: ffff8880291cda00
R13: ffff8880291cda00 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f1648baf380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1648c9b784 CR3: 000000005dcea000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
page_ref_add_unless include/linux/page_ref.h:235 [inline]
folio_ref_add_unless include/linux/page_ref.h:248 [inline]
folio_try_get+0x3b/0x350 include/linux/page_ref.h:264
next_uptodate_folio+0xd3/0x5f0 mm/filemap.c:3638
filemap_map_pages+0x12d0/0x1900 mm/filemap.c:3821
do_fault_around mm/memory.c:5350 [inline]
do_read_fault mm/memory.c:5383 [inline]
do_fault mm/memory.c:5526 [inline]
do_pte_missing mm/memory.c:4047 [inline]
handle_pte_fault mm/memory.c:5889 [inline]
__handle_mm_fault+0x4acb/0x70f0 mm/memory.c:6032
handle_mm_fault+0x2c1/0x7e0 mm/memory.c:6201
do_user_addr_fault arch/x86/mm/fault.c:1337 [inline]
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f1648c9b784
Code: Unable to access opcode bytes at 0x7f1648c9b75a.
RSP: 002b:00007ffeeaa1a938 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007f1648c284f8 RCX: 00007f1648d0368a
RDX: ffffffffffffff80 RSI: 00007f1648c207fc RDI: 00007f1648c20707
RBP: 00007f1648c284f0 R08: 0000000000000000 R09: 000000000000000d
R10: 00007ffeeaa1a6a0 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffeeaa1aa68 R14: 00007ffeeaa1aa88 R15: 0000000000000000