======================================================
WARNING: possible circular locking dependency detected
6.13.0-rc7-syzkaller-00039-gc3812b15000c #0 Not tainted
------------------------------------------------------
syz.4.550/8126 is trying to acquire lock:
ffff888148c9fc40 (mapping.invalidate_lock#2){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:873 [inline]
ffff888148c9fc40 (mapping.invalidate_lock#2){.+.+}-{4:4}, at: page_cache_ra_unbounded+0x173/0x750 mm/readahead.c:226
but task is already holding lock:
ffff88807c90d9a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline]
ffff88807c90d9a0 (&mm->mmap_lock){++++}-{4:4}, at: xdp_umem_pin_pages net/xdp/xdp_umem.c:104 [inline]
ffff88807c90d9a0 (&mm->mmap_lock){++++}-{4:4}, at: xdp_umem_reg net/xdp/xdp_umem.c:230 [inline]
ffff88807c90d9a0 (&mm->mmap_lock){++++}-{4:4}, at: xdp_umem_create+0x6c8/0x1270 net/xdp/xdp_umem.c:263
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #5 (&mm->mmap_lock){++++}-{4:4}:
__might_fault mm/memory.c:6751 [inline]
__might_fault+0x11b/0x190 mm/memory.c:6744
_inline_copy_from_user include/linux/uaccess.h:162 [inline]
_copy_from_user+0x29/0xd0 lib/usercopy.c:18
copy_from_user include/linux/uaccess.h:212 [inline]
__blk_trace_setup+0xa8/0x180 kernel/trace/blktrace.c:626
blk_trace_ioctl+0x163/0x290 kernel/trace/blktrace.c:740
blkdev_ioctl+0x109/0x6d0 block/ioctl.c:682
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl fs/ioctl.c:892 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #4 (&q->debugfs_mutex){+.+.}-{4:4}:
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735
blk_mq_init_sched+0x42b/0x640 block/blk-mq-sched.c:473
elevator_init_mq+0x2cd/0x420 block/elevator.c:610
add_disk_fwnode+0x113/0x1300 block/genhd.c:413
sd_probe+0xa86/0x1000 drivers/scsi/sd.c:4024
call_driver_probe drivers/base/dd.c:579 [inline]
really_probe+0x241/0xa90 drivers/base/dd.c:658
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
bus_for_each_drv+0x15a/0x1e0 drivers/base/bus.c:459
__device_attach_async_helper+0x1d3/0x290 drivers/base/dd.c:987
async_run_entry_fn+0x9f/0x530 kernel/async.c:129
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
-> #3 (&q->q_usage_counter(queue)#50){++++}-{0:0}:
blk_queue_enter+0x50f/0x640 block/blk-core.c:328
blk_mq_alloc_request+0x59b/0x950 block/blk-mq.c:652
scsi_alloc_request drivers/scsi/scsi_lib.c:1225 [inline]
scsi_execute_cmd+0x1da/0xf40 drivers/scsi/scsi_lib.c:307
read_capacity_16+0x213/0xe10 drivers/scsi/sd.c:2655
sd_read_capacity drivers/scsi/sd.c:2824 [inline]
sd_revalidate_disk.isra.0+0x1a06/0xa8d0 drivers/scsi/sd.c:3734
sd_probe+0x904/0x1000 drivers/scsi/sd.c:4010
call_driver_probe drivers/base/dd.c:579 [inline]
really_probe+0x241/0xa90 drivers/base/dd.c:658
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
bus_for_each_drv+0x15a/0x1e0 drivers/base/bus.c:459
__device_attach_async_helper+0x1d3/0x290 drivers/base/dd.c:987
async_run_entry_fn+0x9f/0x530 kernel/async.c:129
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x2c4/0x3a0 kernel/kthread.c:389
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
-> #2 (&q->limits_lock){+.+.}-{4:4}:
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735
queue_limits_start_update include/linux/blkdev.h:947 [inline]
__nbd_set_size+0x2c0/0x730 drivers/block/nbd.c:351
nbd_set_size drivers/block/nbd.c:388 [inline]
nbd_start_device+0x8fd/0xd70 drivers/block/nbd.c:1456
nbd_start_device_ioctl drivers/block/nbd.c:1464 [inline]
__nbd_ioctl drivers/block/nbd.c:1539 [inline]
nbd_ioctl+0x21a/0xfd0 drivers/block/nbd.c:1579
blkdev_ioctl+0x279/0x6d0 block/ioctl.c:693
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl fs/ioctl.c:892 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #1 (&q->q_usage_counter(io)#52){++++}-{0:0}:
bio_queue_enter block/blk.h:75 [inline]
blk_mq_submit_bio+0x1fb6/0x24c0 block/blk-mq.c:3090
__submit_bio+0x384/0x540 block/blk-core.c:629
__submit_bio_noacct_mq block/blk-core.c:710 [inline]
submit_bio_noacct_nocheck+0x698/0xd70 block/blk-core.c:739
submit_bio_noacct+0x93a/0x1e20 block/blk-core.c:868
mpage_bio_submit_read fs/mpage.c:75 [inline]
mpage_readahead+0x41d/0x590 fs/mpage.c:377
read_pages+0x1ab/0xdc0 mm/readahead.c:160
page_cache_ra_unbounded+0x3dc/0x750 mm/readahead.c:295
do_page_cache_ra mm/readahead.c:325 [inline]
force_page_cache_ra+0x24b/0x340 mm/readahead.c:354
page_cache_sync_ra+0x110/0x9c0 mm/readahead.c:566
page_cache_sync_readahead include/linux/pagemap.h:1397 [inline]
filemap_get_pages+0xd7b/0x1be0 mm/filemap.c:2537
filemap_read+0x3ca/0xd70 mm/filemap.c:2637
blkdev_read_iter+0x187/0x480 block/fops.c:770
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x882/0xbe0 fs/read_write.c:565
ksys_read+0x12b/0x250 fs/read_write.c:708
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #0 (mapping.invalidate_lock#2){.+.+}-{4:4}:
check_prev_add kernel/locking/lockdep.c:3161 [inline]
check_prevs_add kernel/locking/lockdep.c:3280 [inline]
validate_chain kernel/locking/lockdep.c:3904 [inline]
__lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5226
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
down_read+0x9a/0x330 kernel/locking/rwsem.c:1524
filemap_invalidate_lock_shared include/linux/fs.h:873 [inline]
page_cache_ra_unbounded+0x173/0x750 mm/readahead.c:226
do_page_cache_ra mm/readahead.c:325 [inline]
page_cache_ra_order+0x8f2/0xc80 mm/readahead.c:524
do_sync_mmap_readahead mm/filemap.c:3194 [inline]
filemap_fault+0x14a5/0x2820 mm/filemap.c:3335
__do_fault+0x10d/0x490 mm/memory.c:4907
do_cow_fault mm/memory.c:5352 [inline]
do_fault mm/memory.c:5458 [inline]
do_pte_missing+0x99f/0x3e00 mm/memory.c:3979
handle_pte_fault mm/memory.c:5801 [inline]
__handle_mm_fault+0x103c/0x2a40 mm/memory.c:5944
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6112
faultin_page mm/gup.c:1196 [inline]
__get_user_pages+0x8d9/0x3b50 mm/gup.c:1494
__get_user_pages_locked mm/gup.c:1760 [inline]
__gup_longterm_locked+0x5ff/0x1870 mm/gup.c:2537
pin_user_pages+0x13f/0x160 mm/gup.c:3608
xdp_umem_pin_pages net/xdp/xdp_umem.c:105 [inline]
xdp_umem_reg net/xdp/xdp_umem.c:230 [inline]
xdp_umem_create+0x73c/0x1270 net/xdp/xdp_umem.c:263
xsk_setsockopt+0x7fc/0xa10 net/xdp/xsk.c:1390
do_sock_setsockopt+0x225/0x480 net/socket.c:2313
__sys_setsockopt+0x1a0/0x230 net/socket.c:2338
__do_sys_setsockopt net/socket.c:2344 [inline]
__se_sys_setsockopt net/socket.c:2341 [inline]
__x64_sys_setsockopt+0xbd/0x160 net/socket.c:2341
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
mapping.invalidate_lock#2 --> &q->debugfs_mutex --> &mm->mmap_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
rlock(&mm->mmap_lock);
lock(&q->debugfs_mutex);
lock(&mm->mmap_lock);
rlock(mapping.invalidate_lock#2);
*** DEADLOCK ***
2 locks held by syz.4.550/8126:
#0: ffff88807b4cf6f0 (&xs->mutex){+.+.}-{4:4}, at: xsk_setsockopt+0x46b/0xa10 net/xdp/xsk.c:1384
#1: ffff88807c90d9a0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline]
#1: ffff88807c90d9a0 (&mm->mmap_lock){++++}-{4:4}, at: xdp_umem_pin_pages net/xdp/xdp_umem.c:104 [inline]
#1: ffff88807c90d9a0 (&mm->mmap_lock){++++}-{4:4}, at: xdp_umem_reg net/xdp/xdp_umem.c:230 [inline]
#1: ffff88807c90d9a0 (&mm->mmap_lock){++++}-{4:4}, at: xdp_umem_create+0x6c8/0x1270 net/xdp/xdp_umem.c:263
stack backtrace:
CPU: 1 UID: 0 PID: 8126 Comm: syz.4.550 Not tainted 6.13.0-rc7-syzkaller-00039-gc3812b15000c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_circular_bug+0x419/0x5d0 kernel/locking/lockdep.c:2074
check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2206
check_prev_add kernel/locking/lockdep.c:3161 [inline]
check_prevs_add kernel/locking/lockdep.c:3280 [inline]
validate_chain kernel/locking/lockdep.c:3904 [inline]
__lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5226
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
down_read+0x9a/0x330 kernel/locking/rwsem.c:1524
filemap_invalidate_lock_shared include/linux/fs.h:873 [inline]
page_cache_ra_unbounded+0x173/0x750 mm/readahead.c:226
do_page_cache_ra mm/readahead.c:325 [inline]
page_cache_ra_order+0x8f2/0xc80 mm/readahead.c:524
do_sync_mmap_readahead mm/filemap.c:3194 [inline]
filemap_fault+0x14a5/0x2820 mm/filemap.c:3335
__do_fault+0x10d/0x490 mm/memory.c:4907
do_cow_fault mm/memory.c:5352 [inline]
do_fault mm/memory.c:5458 [inline]
do_pte_missing+0x99f/0x3e00 mm/memory.c:3979
handle_pte_fault mm/memory.c:5801 [inline]
__handle_mm_fault+0x103c/0x2a40 mm/memory.c:5944
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6112
faultin_page mm/gup.c:1196 [inline]
__get_user_pages+0x8d9/0x3b50 mm/gup.c:1494
__get_user_pages_locked mm/gup.c:1760 [inline]
__gup_longterm_locked+0x5ff/0x1870 mm/gup.c:2537
pin_user_pages+0x13f/0x160 mm/gup.c:3608
xdp_umem_pin_pages net/xdp/xdp_umem.c:105 [inline]
xdp_umem_reg net/xdp/xdp_umem.c:230 [inline]
xdp_umem_create+0x73c/0x1270 net/xdp/xdp_umem.c:263
xsk_setsockopt+0x7fc/0xa10 net/xdp/xsk.c:1390
do_sock_setsockopt+0x225/0x480 net/socket.c:2313
__sys_setsockopt+0x1a0/0x230 net/socket.c:2338
__do_sys_setsockopt net/socket.c:2344 [inline]
__se_sys_setsockopt net/socket.c:2341 [inline]
__x64_sys_setsockopt+0xbd/0x160 net/socket.c:2341
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fabc3985d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fabc4743038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fabc3b75fa0 RCX: 00007fabc3985d29
RDX: 0000000000000004 RSI: 000000000000011b RDI: 0000000000000003
RBP: 00007fabc3a01b08 R08: 0000000000000020 R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fabc3b75fa0 R15: 00007ffc1aaf86a8
</TASK>