INFO: task syz-executor.4:20905 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25040 pid:20905 tgid:20905 ppid:5098 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
io_schedule+0x8c/0x100 kernel/sched/core.c:8998
folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1273
btrfs_page_mkwrite+0x4a4/0xd10 fs/btrfs/inode.c:8148
do_page_mkwrite+0x197/0x470 mm/memory.c:2944
wp_page_shared mm/memory.c:3339 [inline]
do_wp_page+0x1d07/0x4d40 mm/memory.c:3479
handle_pte_fault mm/memory.c:5055 [inline]
__handle_mm_fault mm/memory.c:5180 [inline]
handle_mm_fault+0x1b1c/0x6680 mm/memory.c:5345
do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]
handle_page_fault arch/x86/mm/fault.c:1507 [inline]
exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7fda2de5ddbc
RSP: 002b:00007ffdd43f7728 EFLAGS: 00010206
RAX: 0000000020000080 RBX: 00007ffdd43f7838 RCX: 00007fda2da00000
RDX: 0000000000000013 RSI: 00007fda2da05a30 RDI: 0000000020000080
RBP: 0000000000000032 R08: 00007fda2de00000 R09: 00007ffdd43fa0b0
R10: 00007ffdd43fa080 R11: 0000000000060916 R12: 00007fda2da05a10
R13: fffffffffffffffe R14: 00007fda2da00000 R15: 00007fda2da05a18
INFO: task syz-executor.4:20906 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23000 pid:20906 tgid:20905 ppid:5098 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
io_schedule+0x8c/0x100 kernel/sched/core.c:8998
folio_wait_bit_common+0x881/0x12b0 mm/filemap.c:1273
btrfs_page_mkwrite+0x4a4/0xd10 fs/btrfs/inode.c:8148
do_page_mkwrite+0x197/0x470 mm/memory.c:2944
wp_page_shared mm/memory.c:3339 [inline]
do_wp_page+0x1d07/0x4d40 mm/memory.c:3479
handle_pte_fault mm/memory.c:5055 [inline]
__handle_mm_fault mm/memory.c:5180 [inline]
handle_mm_fault+0x1b1c/0x6680 mm/memory.c:5345
do_user_addr_fault arch/x86/mm/fault.c:1415 [inline]
handle_page_fault arch/x86/mm/fault.c:1507 [inline]
exc_page_fault+0x2ad/0x870 arch/x86/mm/fault.c:1563
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:58
Code: 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 <48> 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb
RSP: 0018:ffffc9001c2bf330 EFLAGS: 00050206
RAX: 0000000000000000 RBX: 0000000020000118 RCX: 0000000000000038
RDX: 0000000000000000 RSI: ffffc9001c2bf3e0 RDI: 00000000200000e0
RBP: ffffc9001c2bf498 R08: ffffc9001c2bf417 R09: 1ffff92003857e82
R10: dffffc0000000000 R11: fffff52003857e83 R12: 0000000000000038
R13: ffffc9001c2bf3e0 R14: 00000000200000e0 R15: ffffc9001c2bf3e0
copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:133 [inline]
_copy_to_user+0x86/0xa0 lib/usercopy.c:41
copy_to_user include/linux/uaccess.h:191 [inline]
fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:145
emit_fiemap_extent+0x258/0x410 fs/btrfs/extent_io.c:2477
fiemap_process_hole+0x374/0xaf0 fs/btrfs/extent_io.c:2688
extent_fiemap+0xeae/0x1fe0
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7830
ioctl_fiemap fs/ioctl.c:220 [inline]
do_vfs_ioctl+0x19ea/0x2b40 fs/ioctl.c:811
__do_sys_ioctl fs/ioctl.c:869 [inline]
__se_sys_ioctl+0x81/0x170 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fda2de7cd29
RSP: 002b:00007fda2eb030c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fda2dfabf80 RCX: 00007fda2de7cd29
RDX: 00000000200000c0 RSI: 00000000c020660b RDI: 0000000000000007
RBP: 00007fda2dec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fda2dfabf80 R15: 00007ffdd43f7648
INFO: task syz-executor.4:20942 blocked for more than 144 seconds.
Not tainted 6.7.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24112 pid:20942 tgid:20905 ppid:5098 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
wait_extent_bit fs/btrfs/extent-io-tree.c:799 [inline]
lock_extent+0x69d/0x850 fs/btrfs/extent-io-tree.c:1843
find_lock_delalloc_range+0x4b5/0x970 fs/btrfs/extent_io.c:393
writepage_delalloc+0x17f/0x470 fs/btrfs/extent_io.c:1183
__extent_writepage fs/btrfs/extent_io.c:1440 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2108 [inline]
extent_writepages+0x1210/0x26a0 fs/btrfs/extent_io.c:2230
do_writepages+0x3a6/0x670 mm/page-writeback.c:2553
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:387
__filemap_fdatawrite_range mm/filemap.c:420 [inline]
filemap_write_and_wait_range+0x1d4/0x2c0 mm/filemap.c:675
__iomap_dio_rw+0xa80/0x2330 fs/iomap/direct-io.c:592
iomap_dio_rw+0x46/0xa0 fs/iomap/direct-io.c:748
btrfs_dio_read+0xb6/0x100 fs/btrfs/inode.c:7789
btrfs_direct_read fs/btrfs/file.c:3778 [inline]
btrfs_file_read_iter+0x39e/0x6b0 fs/btrfs/file.c:3817
call_read_iter include/linux/fs.h:2014 [inline]
copy_splice_read+0x4c9/0x9c0 fs/splice.c:364
splice_direct_to_actor+0x2c4/0x9e0 fs/splice.c:1069
do_splice_direct+0x2ac/0x3f0 fs/splice.c:1194
do_sendfile+0x62c/0x1000 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fda2de7cd29
RSP: 002b:00007fda2d1ff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fda2dfac050 RCX: 00007fda2de7cd29
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 00007fda2dec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201008 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fda2dfac050 R15: 00007ffdd43f7648
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:10/2898:
#0: ffff888142e51d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#0: ffff888142e51d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#1: ffffc9000a537d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc9000a537d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#2: ffff888028e1c0e0 (&type->s_umount_key#62){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:610
2 locks held by getty/4820:
#0: ffff88802655d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by kworker/0:9/5255:
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#0: ffff888012c72938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#1: ffffc9000510fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc9000510fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
3 locks held by syz-executor.4/20905:
#0: ffff88807af5a730 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:663 [inline]
#0: ffff88807af5a730 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f6/0x6f0 mm/memory.c:5501
#1: ffff888028e1c510 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2944
#2: ffff88803c5b4e50 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8147
4 locks held by syz-executor.4/20906:
#0: ffff88803c5b4fc8 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88803c5b4fc8 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:370
#1: ffff88801931baa0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#1: ffff88801931baa0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5372 [inline]
#1: ffff88801931baa0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2d0 mm/memory.c:5432
#2: ffff888028e1c510 (sb_pagefaults#2){.+.+}-{0:0}, at: do_page_mkwrite+0x197/0x470 mm/memory.c:2944
#3: ffff88803c5b4e50 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x49c/0xd10 fs/btrfs/inode.c:8147
2 locks held by syz-executor.4/20942:
#0: ffff888028e1c418 (sb_writers#18){.+.+}-{0:0}, at: do_sendfile+0x607/0x1000 fs/read_write.c:1253
#1: ffff88803c5b4fc8 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#1: ffff88803c5b4fc8 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:370
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 17553 Comm: kworker/u4:8 Not tainted 6.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:check_preemption_disabled+0x2/0x110 lib/smp_processor_id.c:13
Code: 00 00 00 0f 1f 44 00 00 f3 0f 1e fa 48 c7 c7 80 e3 bd 8b 48 c7 c6 c0 e3 bd 8b eb 0c 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 <41> 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24
RSP: 0018:ffffc9001c3ff538 EFLAGS: 00000083
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81954f9c
RDX: 0000000000000000 RSI: ffffffff8bbde3c0 RDI: ffffffff8bbde380
RBP: 0000000000000000 R08: ffffffff8f00c42f R09: 1ffffffff1e01885
R10: dffffc0000000000 R11: fffffbfff1e01886 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556b181bd030 CR3: 000000000d731000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700
trace_irq_disable+0x3b/0xf0 include/trace/events/preemptirq.h:36
irqentry_enter+0x38/0x60 kernel/entry/common.c:375
sysvec_apic_timer_interrupt+0xe/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:preempt_count_add+0x115/0x190 kernel/sched/core.c:5833
Code: 75 74 83 3d 8c 4c a0 0d 00 75 19 90 48 c7 c7 20 33 6a 8b 48 c7 c6 60 33 6a 8b e8 c6 bf f3 ff 90 0f 0b 90 90 90 e9 61 ff ff ff <48> c7 c1 00 03 5d 92 80 e1 07 80 c1 03 38 c1 0f 8c 03 ff ff ff 48
RSP: 0018:ffffc9001c3ff650 EFLAGS: 00000202
RAX: 0000000000000004 RBX: 0000000000000001 RCX: ffff8880279e9dc0
RDX: 0000000012c67558 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc9001c3ff770 R08: ffffffff81da2e0b R09: 1ffffffff21bb06c
R10: dffffc0000000000 R11: fffffbfff21bb06d R12: 1ffff9200387fed8
R13: dffffc0000000000 R14: ffff888012c66060 R15: dffffc0000000000
__raw_spin_lock include/linux/spinlock_api_smp.h:132 [inline]
_raw_spin_lock+0x12/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
__pte_offset_map_lock+0x1ba/0x300 mm/pgtable-generic.c:373
get_locked_pte include/linux/mm.h:2671 [inline]
__text_poke+0x2c5/0xd30 arch/x86/kernel/alternative.c:1830
text_poke arch/x86/kernel/alternative.c:1915 [inline]
text_poke_bp_batch+0x8cd/0xb30 arch/x86/kernel/alternative.c:2304
text_poke_flush arch/x86/kernel/alternative.c:2417 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2424
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked+0xce/0x1b0 kernel/jump_label.c:235
static_key_disable+0x1a/0x20 kernel/jump_label.c:243
toggle_allocation_gate+0x1b8/0x250 mm/kfence/core.c:835
process_one_work kernel/workqueue.c:2627 [inline]
process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2700
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2781
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242