INFO: task syz.1.12193:31095 blocked for more than 143 seconds.
Not tainted 6.11.0-rc4-syzkaller-00019-gb311c1b497e5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.12193 state:D stack:24672 pid:31095 tgid:31095 ppid:22948 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
filemap_invalidate_lock_shared include/linux/fs.h:854 [inline]
filemap_fault+0xb5b/0x1760 mm/filemap.c:3321
__do_fault+0x135/0x460 mm/memory.c:4655
do_shared_fault mm/memory.c:5121 [inline]
do_fault mm/memory.c:5195 [inline]
do_pte_missing mm/memory.c:3947 [inline]
handle_pte_fault+0x1176/0x6fc0 mm/memory.c:5521
__handle_mm_fault mm/memory.c:5664 [inline]
handle_mm_fault+0xf70/0x1880 mm/memory.c:5832
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f3601e41043
RSP: 002b:00007fff76c776c0 EFLAGS: 00010246
RAX: 0000000020000000 RBX: 0000000000000008 RCX: 0000000000000000
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 000055557a6323c8
RBP: 00007fff76c777c8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000032
R13: 00007fff76c777f0 R14: 00007fff76c77810 R15: fffffffffffffffe
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by getty/4964:
#0: ffff88802b1b60a0 (&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+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.3.9363/25072:
3 locks held by kworker/u8:0/25537:
2 locks held by syz.1.12193/31095:
#0: ffff888028e9b730 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:690 [inline]
#0: ffff888028e9b730 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x6e0 mm/memory.c:5998
#1: ffff88801d9570c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:854 [inline]
#1: ffff88801d9570c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0xb5b/0x1760 mm/filemap.c:3321
1 lock held by syz.0.12371/31495:
#0: ffff88801d9570c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:844 [inline]
#0: ffff88801d9570c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1fc/0x530 block/fops.c:807
2 locks held by syz.2.12653/32142:
#0: ffff88802e6b7398 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline]
#0: ffff88802e6b7398 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5869 [inline]
#0: ffff88802e6b7398 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5929
#1: ffff88801d9570c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:854 [inline]
#1: ffff88801d9570c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_fault+0xb5b/0x1760 mm/filemap.c:3321
1 lock held by syz.0.14102/3040:
#0: ffff88801d9570c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:844 [inline]
#0: ffff88801d9570c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:221 [inline]
#0: ffff88801d9570c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1618/0x2410 block/ioctl.c:555
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc4-syzkaller-00019-gb311c1b497e5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
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: 25 Comm: kworker/1:0 Not tainted 6.11.0-rc4-syzkaller-00019-gb311c1b497e5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events delayed_vfree_work
RIP: 0010:free_pages_prepare mm/page_alloc.c:1093 [inline]
RIP: 0010:free_unref_page+0x328/0xea0 mm/page_alloc.c:2612
Code: 00 00 fc ff df 48 8b 4c 24 10 80 3c 01 00 4c 8b 24 24 74 08 4c 89 e7 e8 d6 4a 0e 00 48 b8 00 00 00 ff ff 0f 80 ff 49 23 04 24 <48> b9 00 00 00 00 00 f0 7f 00 48 09 c1 49 89 0c 24 44 8b 6c 24 0c
RSP: 0018:ffffc900001f7ae0 EFLAGS: 00000206
RAX: 0080000000000000 RBX: 0000000000000000 RCX: 1ffffd400022ef58
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea0001177af4
RBP: 0000000000000000 R08: ffffea0001177af7 R09: 1ffffd400022ef5e
R10: dffffc0000000000 R11: fffff9400022ef5f R12: ffffea0001177ac0
R13: 0000000000000000 R14: 1ffffd400022ef59 R15: ffffea0001177ac8
FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa4f8ce52d8 CR3: 000000002419e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vfree+0x186/0x2e0 mm/vmalloc.c:3364
delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3285
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244