INFO: task syz-executor.0:19800 blocked for more than 143 seconds.
Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26496 pid:19800 tgid:19799 ppid:27861 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c00 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x120/0x330 kernel/locking/rwsem.c:1528
filemap_invalidate_lock_shared include/linux/fs.h:857 [inline]
page_cache_ra_unbounded+0x13a/0x5f0 mm/readahead.c:225
do_page_cache_ra mm/readahead.c:299 [inline]
page_cache_ra_order+0x7d7/0xaa0 mm/readahead.c:544
do_sync_mmap_readahead mm/filemap.c:3153 [inline]
filemap_fault+0x16a8/0x3570 mm/filemap.c:3245
__do_fault+0x107/0x490 mm/memory.c:4376
do_cow_fault mm/memory.c:4768 [inline]
do_fault mm/memory.c:4870 [inline]
do_pte_missing mm/memory.c:3745 [inline]
handle_pte_fault mm/memory.c:5144 [inline]
__handle_mm_fault+0x1090/0x4900 mm/memory.c:5285
handle_mm_fault+0x47a/0xa10 mm/memory.c:5450
faultin_page mm/gup.c:958 [inline]
__get_user_pages+0x4b2/0x1490 mm/gup.c:1241
populate_vma_page_range+0x2d4/0x420 mm/gup.c:1679
__mm_populate+0x1d7/0x380 mm/gup.c:1788
do_mlock+0x450/0x830 mm/mlock.c:665
__do_sys_mlock2 mm/mlock.c:686 [inline]
__se_sys_mlock2 mm/mlock.c:676 [inline]
__x64_sys_mlock2+0xbd/0x100 mm/mlock.c:676
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f34a367cda9
RSP: 002b:00007f34a44090c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000145
RAX: ffffffffffffffda RBX: 00007f34a37abf80 RCX: 00007f34a367cda9
RDX: 0000000000000000 RSI: 0000000000011000 RDI: 00000000200bb000
RBP: 00007f34a36c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f34a37abf80 R15: 00007f34a38cfa48
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by klogd/4502:
2 locks held by getty/4811:
#0: ffff88802dc0a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201
3 locks held by kworker/u4:8/14687:
1 lock held by syz-executor.1/16329:
1 lock held by syz-executor.0/19800:
#0: ffff88801b4a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:857 [inline]
#0: ffff88801b4a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0x13a/0x5f0 mm/readahead.c:225
1 lock held by syz-executor.1/20597:
#0: ffff88801b4a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b4a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:800
1 lock held by syz-executor.1/23526:
#0: ffff88801b4a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b4a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:800
1 lock held by syz-executor.1/28270:
#0: ffff88801b4a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline]
#0: ffff88801b4a94c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1e9/0x450 block/fops.c:800
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #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+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 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+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 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: 16 Comm: ksoftirqd/0 Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:check_preemption_disabled+0x2/0xe0 lib/smp_processor_id.c:13
Code: ac 04 85 c0 74 1a 65 8b 05 b3 42 74 75 85 c0 75 0f 65 8b 05 bc 3f 74 75 85 c0 74 04 90 0f 0b 90 e9 83 fc ff ff 0f 1f 00 41 54 <55> 53 48 83 ec 08 65 8b 1d cd 79 75 75 65 8b 05 c2 79 75 75 a9 ff
RSP: 0018:ffffc90000157a78 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8880156ad940 RCX: 1ffffffff1e75831
RDX: 1ffff11002ad5c7c RSI: ffffffff8accb180 RDI: ffffffff8b2fd380
RBP: 89d38bd7bc513042 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8f3af417 R11: 0000000000000001 R12: ffffffff92c1a4d0
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88804845a000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000f71000 CR3: 0000000027940000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4360 [inline]
lockdep_hardirqs_on_prepare+0x17f/0x420 kernel/locking/lockdep.c:4311
trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
_raw_spin_unlock_irqrestore+0x4e/0x70 kernel/locking/spinlock.c:194
__debug_check_no_obj_freed lib/debugobjects.c:998 [inline]
debug_check_no_obj_freed+0x324/0x600 lib/debugobjects.c:1019
free_pages_prepare mm/page_alloc.c:1146 [inline]
free_unref_page_prepare+0x228/0xb10 mm/page_alloc.c:2346
free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486
rcu_do_batch kernel/rcu/tree.c:2190 [inline]
rcu_core+0x819/0x1680 kernel/rcu/tree.c:2465
__do_softirq+0x21a/0x8de kernel/softirq.c:553
run_ksoftirqd kernel/softirq.c:921 [inline]
run_ksoftirqd+0x31/0x60 kernel/softirq.c:913
smpboot_thread_fn+0x660/0xa10 kernel/smpboot.c:164
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242