INFO: task syz-executor.2:14012 blocked for more than 143 seconds.
Not tainted 6.3.0-rc2-syzkaller-00405-ga3671bd86a97 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23416 pid:14012 ppid:5126 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:751
lock_extent+0x1ce/0x280 fs/btrfs/extent-io-tree.c:1742
btrfs_page_mkwrite+0x554/0xc90 fs/btrfs/inode.c:8158
do_page_mkwrite+0x1a1/0x600 mm/memory.c:2925
wp_page_shared mm/memory.c:3274 [inline]
do_wp_page+0x501/0x3620 mm/memory.c:3356
handle_pte_fault mm/memory.c:4927 [inline]
__handle_mm_fault mm/memory.c:5051 [inline]
handle_mm_fault+0x23a0/0x51c0 mm/memory.c:5197
do_user_addr_fault arch/x86/mm/fault.c:1407 [inline]
handle_page_fault arch/x86/mm/fault.c:1498 [inline]
exc_page_fault+0x5b1/0x7c0 arch/x86/mm/fault.c:1554
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:166
Code: d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 2c 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 0f 01 cb 83 fa 40 72 34 89 d1 a4 31 c0 0f 01 ca c3 89 ca eb 06 66 0f 1f 44 00 00 83 f8 12 74
RSP: 0018:ffffc90019c1fe60 EFLAGS: 00050206
RAX: ffffffff842fea01 RBX: 00007fffffffec00 RCX: 0000000000000400
RDX: 0000000000000400 RSI: ffff888050ad4800 RDI: 0000000020000100
RBP: ffff888050ad4820 R08: dffffc0000000000 R09: ffffed100a15a980
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000400
R13: 1ffff1100a15a903 R14: 0000000020000100 R15: ffff888050ad4800
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
_copy_to_user+0xed/0x130 lib/usercopy.c:41
copy_to_user include/linux/uaccess.h:169 [inline]
btrfs_ioctl_scrub+0x266/0x340 fs/btrfs/ioctl.c:3186
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
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: 0033:0x7f2233a8c0f9
RSP: 002b:00007f2234779168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2233babf80 RCX: 00007f2233a8c0f9
RDX: 0000000020000100 RSI: 00000000c400941b RDI: 0000000000000008
RBP: 00007f2233ae7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc6f675baf R14: 00007f2234779300 R15: 0000000000022000
INFO: task syz-executor.2:14048 blocked for more than 144 seconds.
Not tainted 6.3.0-rc2-syzkaller-00405-ga3671bd86a97 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24184 pid:14048 ppid:5126 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x173b/0x4630 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
io_schedule+0x8c/0x100 kernel/sched/core.c:8884
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301
lock_page include/linux/pagemap.h:973 [inline]
set_page_dirty_lock+0xfd/0x2d0 mm/page-writeback.c:2861
bio_set_pages_dirty+0x1f7/0x2c0 block/bio.c:1480
iomap_dio_bio_iter+0xb7f/0x1440 fs/iomap/direct-io.c:341
__iomap_dio_rw+0x121a/0x20d0 fs/iomap/direct-io.c:595
iomap_dio_rw+0x46/0xa0 fs/iomap/direct-io.c:683
btrfs_dio_read+0xbc/0x110 fs/btrfs/inode.c:7789
btrfs_direct_read fs/btrfs/file.c:3772 [inline]
btrfs_file_read_iter+0x39d/0x6b0 fs/btrfs/file.c:3811
do_iter_read+0x71a/0xc70 fs/read_write.c:796
vfs_readv fs/read_write.c:916 [inline]
do_preadv+0x212/0x350 fs/read_write.c:1008
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: 0033:0x7f2233a8c0f9
RSP: 002b:00007f2234758168 EFLAGS: 00000246 ORIG_RAX: 0000000000000147
RAX: ffffffffffffffda RBX: 00007f2233bac050 RCX: 00007f2233a8c0f9
RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000005
RBP: 00007f2233ae7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc6f675baf R14: 00007f2234758300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf255f0 (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: ffffffff8cf25df0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
4 locks held by kworker/1:0/22:
#0: ffff8880b993be98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:539
#1: ffffc900001c7d20 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
#2: ffffffff8d571558 (pool_lock){-.-.}-{2:2}, at: free_obj_work+0x13d/0x6d0 lib/debugobjects.c:297
#3: ffffffff91d2e378 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x9a/0x6d0 lib/debugobjects.c:665
1 lock held by khungtaskd/28:
#0: ffffffff8cf25420 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4747:
#0: ffff88802c642098 (&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
1 lock held by syz-executor.0/5114:
#0: ffffffff8cf2a8f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8cf2a8f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:989
1 lock held by syz-executor.4/5128:
#0: ffffffff8cf2a8f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8cf2a8f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:989
1 lock held by syz-executor.1/5130:
2 locks held by kworker/1:14/5835:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc90015c87d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
3 locks held by kworker/u4:9/6917:
#0: ffff888017834138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363
#1: ffffc9001542fd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365
#2: ffff88803ee260e0 (&type->s_umount_key#53){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:414
4 locks held by syz-executor.2/14012:
#0: ffff88803ee26460 (sb_writers#14){.+.+}-{0:0}, at: mnt_want_write_file+0x5e/0x1f0 fs/namespace.c:438
#1: ffff88807ef0ae98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#1: ffff88807ef0ae98 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1348 [inline]
#1: ffff88807ef0ae98 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1498 [inline]
#1: ffff88807ef0ae98 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x18e/0x7c0 arch/x86/mm/fault.c:1554
#2: ffff88803ee26558 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x1a1/0x600 mm/memory.c:2925
#3: ffff888085275838 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x5e8/0xc90 fs/btrfs/inode.c:8147
1 lock held by syz-executor.2/14048:
#0: ffff8880852759b0 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff8880852759b0 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:169
2 locks held by syz-executor.2/15625:
2 locks held by syz-executor.1/15628:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc2-syzkaller-00405-ga3671bd86a97 #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+0xec2/0xf00 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5835 Comm: kworker/1:14 Not tainted 6.3.0-rc2-syzkaller-00405-ga3671bd86a97 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: events free_obj_work
RIP: 0010:lockdep_hardirqs_on_prepare+0x46/0x7a0 kernel/locking/lockdep.c:4275
Code: 65 48 8b 04 25 28 00 00 00 48 89 44 24 60 48 ba 00 00 00 00 00 fc ff df 48 c7 44 24 20 b3 8a b5 41 48 c7 44 24 28 b5 9b 7e 8c <48> c7 44 24 30 70 e0 69 81 4c 8d 7c 24 20 49 c1 ef 03 48 b8 f1 f1
RSP: 0018:ffffc90015c879e0 EFLAGS: 00000082
RAX: 06fc53709f336d00 RBX: ffff8880795829a0 RCX: ffffffff8191071c
RDX: dffffc0000000000 RSI: ffffffff8b3801a0 RDI: ffffffff8b380160
RBP: ffffc90015c87a90 R08: dffffc0000000000 R09: fffffbfff1ca6f7e
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff8880795829a0 R14: 00000000000131e8 R15: 0000000000000286
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f264b9ad988 CR3: 0000000023775000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61
kasan_quarantine_put+0xd8/0x230 mm/kasan/quarantine.c:242
kasan_slab_free include/linux/kasan.h:162 [inline]
slab_free_hook mm/slub.c:1781 [inline]
slab_free_freelist_hook mm/slub.c:1807 [inline]
slab_free mm/slub.c:3787 [inline]
kmem_cache_free+0x297/0x520 mm/slub.c:3809
free_obj_work+0x4ff/0x6d0 lib/debugobjects.c:335
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308