====================================================== WARNING: possible circular locking dependency detected 6.13.0-rc6-syzkaller-00046-g0b7958fa05d5 #0 Not tainted ------------------------------------------------------ syz.3.878/10355 is trying to acquire lock: ffff888020726890 (set->srcu){.+.+}-{0:0}, at: srcu_lock_sync include/linux/srcu.h:170 [inline] ffff888020726890 (set->srcu){.+.+}-{0:0}, at: __synchronize_srcu+0x99/0x2a0 kernel/rcu/srcutree.c:1418 but task is already holding lock: ffff888143782cf8 (&q->sysfs_lock){+.+.}-{4:4}, at: blk_mq_elv_switch_none block/blk-mq.c:4932 [inline] ffff888143782cf8 (&q->sysfs_lock){+.+.}-{4:4}, at: __blk_mq_update_nr_hw_queues+0x446/0x14e0 block/blk-mq.c:5010 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #7 (&q->sysfs_lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 blk_mq_elv_switch_none block/blk-mq.c:4932 [inline] __blk_mq_update_nr_hw_queues+0x446/0x14e0 block/blk-mq.c:5010 blk_mq_update_nr_hw_queues+0x2a/0x40 block/blk-mq.c:5070 nbd_start_device+0x15b/0xd70 drivers/block/nbd.c:1413 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 -> #6 (&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 -> #5 (mapping.invalidate_lock#2){.+.+}-{4:4}: down_read+0x9a/0x330 kernel/locking/rwsem.c:1524 filemap_invalidate_lock_shared include/linux/fs.h:873 [inline] filemap_fault+0x62c/0x2820 mm/filemap.c:3342 __do_fault+0x10d/0x490 mm/memory.c:4907 do_read_fault mm/memory.c:5322 [inline] do_fault mm/memory.c:5456 [inline] do_pte_missing+0xebd/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 populate_vma_page_range+0x27f/0x3a0 mm/gup.c:1932 __mm_populate+0x1d6/0x380 mm/gup.c:2035 do_mlock+0x40a/0x7d0 mm/mlock.c:653 __do_sys_mlock mm/mlock.c:661 [inline] __se_sys_mlock mm/mlock.c:659 [inline] __x64_sys_mlock+0x59/0x80 mm/mlock.c:659 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 (&mm->mmap_lock){++++}-{4:4}: __might_fault mm/memory.c:6751 [inline] __might_fault+0x11b/0x190 mm/memory.c:6744 _copy_from_iter+0x1c4/0x1560 lib/iov_iter.c:259 copy_from_iter include/linux/uio.h:219 [inline] copy_from_iter_full include/linux/uio.h:236 [inline] skb_do_copy_data_nocache include/net/sock.h:2193 [inline] skb_copy_to_page_nocache include/net/sock.h:2219 [inline] tcp_sendmsg_locked+0x193b/0x3770 net/ipv4/tcp.c:1222 tcp_sendmsg+0x2e/0x50 net/ipv4/tcp.c:1358 inet_sendmsg+0xb9/0x140 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg net/socket.c:726 [inline] sock_write_iter+0x4ac/0x5b0 net/socket.c:1147 new_sync_write fs/read_write.c:586 [inline] vfs_write+0x5b1/0x1150 fs/read_write.c:679 ksys_write+0x207/0x250 fs/read_write.c:731 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 -> #3 (sk_lock-AF_INET){+.+.}-{0:0}: lock_sock_nested+0x3a/0xf0 net/core/sock.c:3625 lock_sock include/net/sock.h:1623 [inline] inet_autobind+0x1a/0x1a0 net/ipv4/af_inet.c:178 inet_send_prepare+0x317/0x530 net/ipv4/af_inet.c:837 inet_sendmsg+0x43/0x140 net/ipv4/af_inet.c:848 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg net/socket.c:726 [inline] sock_sendmsg+0x389/0x490 net/socket.c:749 __sock_xmit+0x1e8/0x4f0 drivers/block/nbd.c:577 sock_xmit drivers/block/nbd.c:605 [inline] nbd_send_cmd+0x8ec/0x1cf0 drivers/block/nbd.c:691 nbd_handle_cmd drivers/block/nbd.c:1113 [inline] nbd_queue_rq+0x941/0x1220 drivers/block/nbd.c:1143 blk_mq_dispatch_rq_list+0x446/0x1dc0 block/blk-mq.c:2118 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline] __blk_mq_sched_dispatch_requests+0xcdf/0x1620 block/blk-mq-sched.c:309 blk_mq_sched_dispatch_requests+0xd8/0x1b0 block/blk-mq-sched.c:331 blk_mq_run_hw_queue+0x239/0x670 block/blk-mq.c:2352 blk_mq_dispatch_plug_list block/blk-mq.c:2862 [inline] blk_mq_flush_plug_list+0x673/0x1c60 block/blk-mq.c:2913 __blk_flush_plug+0x2c5/0x4b0 block/blk-core.c:1213 blk_finish_plug block/blk-core.c:1240 [inline] blk_finish_plug block/blk-core.c:1237 [inline] __submit_bio+0x439/0x540 block/blk-core.c:637 __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 submit_bh fs/buffer.c:2819 [inline] block_read_full_folio+0x812/0xa50 fs/buffer.c:2446 filemap_read_folio+0xc9/0x2a0 mm/filemap.c:2357 do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3817 read_mapping_folio include/linux/pagemap.h:1011 [inline] read_part_sector+0xd4/0x310 block/partitions/core.c:722 adfspart_check_ICS+0x94/0x940 block/partitions/acorn.c:360 check_partition block/partitions/core.c:141 [inline] blk_add_partitions block/partitions/core.c:589 [inline] bdev_disk_changed+0x722/0x1520 block/partitions/core.c:693 blkdev_get_whole+0x187/0x290 block/bdev.c:706 bdev_open+0x2c7/0xe20 block/bdev.c:915 bdev_file_open_by_dev block/bdev.c:1017 [inline] bdev_file_open_by_dev+0x17d/0x210 block/bdev.c:992 setup_bdev_super+0x78/0x730 fs/super.c:1554 get_tree_bdev_flags+0x365/0x620 fs/super.c:1634 vfs_get_tree+0x92/0x380 fs/super.c:1814 do_new_mount fs/namespace.c:3513 [inline] path_mount+0x14e6/0x1f10 fs/namespace.c:3840 do_mount fs/namespace.c:3853 [inline] __do_sys_mount fs/namespace.c:4063 [inline] __se_sys_mount fs/namespace.c:4040 [inline] __x64_sys_mount+0x294/0x320 fs/namespace.c:4040 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 -> #2 (&nsock->tx_lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 nbd_handle_cmd drivers/block/nbd.c:1079 [inline] nbd_queue_rq+0x424/0x1220 drivers/block/nbd.c:1143 blk_mq_dispatch_rq_list+0x446/0x1dc0 block/blk-mq.c:2118 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline] __blk_mq_sched_dispatch_requests+0xcdf/0x1620 block/blk-mq-sched.c:309 blk_mq_sched_dispatch_requests+0xd8/0x1b0 block/blk-mq-sched.c:331 blk_mq_run_hw_queue+0x239/0x670 block/blk-mq.c:2352 blk_mq_dispatch_plug_list block/blk-mq.c:2862 [inline] blk_mq_flush_plug_list+0x673/0x1c60 block/blk-mq.c:2913 __blk_flush_plug+0x2c5/0x4b0 block/blk-core.c:1213 blk_finish_plug block/blk-core.c:1240 [inline] blk_finish_plug block/blk-core.c:1237 [inline] __submit_bio+0x439/0x540 block/blk-core.c:637 __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 submit_bh fs/buffer.c:2819 [inline] block_read_full_folio+0x812/0xa50 fs/buffer.c:2446 filemap_read_folio+0xc9/0x2a0 mm/filemap.c:2357 do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3817 read_mapping_folio include/linux/pagemap.h:1011 [inline] read_part_sector+0xd4/0x310 block/partitions/core.c:722 adfspart_check_ICS+0x94/0x940 block/partitions/acorn.c:360 check_partition block/partitions/core.c:141 [inline] blk_add_partitions block/partitions/core.c:589 [inline] bdev_disk_changed+0x722/0x1520 block/partitions/core.c:693 blkdev_get_whole+0x187/0x290 block/bdev.c:706 bdev_open+0x2c7/0xe20 block/bdev.c:915 bdev_file_open_by_dev block/bdev.c:1017 [inline] bdev_file_open_by_dev+0x17d/0x210 block/bdev.c:992 setup_bdev_super+0x78/0x730 fs/super.c:1554 get_tree_bdev_flags+0x365/0x620 fs/super.c:1634 vfs_get_tree+0x92/0x380 fs/super.c:1814 do_new_mount fs/namespace.c:3513 [inline] path_mount+0x14e6/0x1f10 fs/namespace.c:3840 do_mount fs/namespace.c:3853 [inline] __do_sys_mount fs/namespace.c:4063 [inline] __se_sys_mount fs/namespace.c:4040 [inline] __x64_sys_mount+0x294/0x320 fs/namespace.c:4040 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 (&cmd->lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735 nbd_queue_rq+0xbe/0x1220 drivers/block/nbd.c:1135 blk_mq_dispatch_rq_list+0x446/0x1dc0 block/blk-mq.c:2118 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline] blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline] __blk_mq_sched_dispatch_requests+0xcdf/0x1620 block/blk-mq-sched.c:309 blk_mq_sched_dispatch_requests+0xd8/0x1b0 block/blk-mq-sched.c:331 blk_mq_run_hw_queue+0x239/0x670 block/blk-mq.c:2352 blk_mq_dispatch_plug_list block/blk-mq.c:2862 [inline] blk_mq_flush_plug_list+0x673/0x1c60 block/blk-mq.c:2913 __blk_flush_plug+0x2c5/0x4b0 block/blk-core.c:1213 blk_finish_plug block/blk-core.c:1240 [inline] blk_finish_plug block/blk-core.c:1237 [inline] __submit_bio+0x439/0x540 block/blk-core.c:637 __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 submit_bh fs/buffer.c:2819 [inline] block_read_full_folio+0x812/0xa50 fs/buffer.c:2446 filemap_read_folio+0xc9/0x2a0 mm/filemap.c:2357 do_read_cache_folio+0x263/0x5c0 mm/filemap.c:3817 read_mapping_folio include/linux/pagemap.h:1011 [inline] read_part_sector+0xd4/0x310 block/partitions/core.c:722 adfspart_check_ICS+0x94/0x940 block/partitions/acorn.c:360 check_partition block/partitions/core.c:141 [inline] blk_add_partitions block/partitions/core.c:589 [inline] bdev_disk_changed+0x722/0x1520 block/partitions/core.c:693 blkdev_get_whole+0x187/0x290 block/bdev.c:706 bdev_open+0x2c7/0xe20 block/bdev.c:915 bdev_file_open_by_dev block/bdev.c:1017 [inline] bdev_file_open_by_dev+0x17d/0x210 block/bdev.c:992 setup_bdev_super+0x78/0x730 fs/super.c:1554 get_tree_bdev_flags+0x365/0x620 fs/super.c:1634 vfs_get_tree+0x92/0x380 fs/super.c:1814 do_new_mount fs/namespace.c:3513 [inline] path_mount+0x14e6/0x1f10 fs/namespace.c:3840 do_mount fs/namespace.c:3853 [inline] __do_sys_mount fs/namespace.c:4063 [inline] __se_sys_mount fs/namespace.c:4040 [inline] __x64_sys_mount+0x294/0x320 fs/namespace.c:4040 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 (set->srcu){.+.+}-{0:0}: 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_sync+0xf5/0x190 kernel/locking/lockdep.c:5897 srcu_lock_sync include/linux/srcu.h:170 [inline] __synchronize_srcu+0xa9/0x2a0 kernel/rcu/srcutree.c:1418 blk_mq_wait_quiesce_done block/blk-mq.c:291 [inline] blk_mq_wait_quiesce_done block/blk-mq.c:288 [inline] blk_mq_quiesce_queue block/blk-mq.c:311 [inline] blk_mq_quiesce_queue+0x149/0x1b0 block/blk-mq.c:306 elevator_disable+0x70/0x490 block/elevator.c:671 blk_mq_elv_switch_none block/blk-mq.c:4946 [inline] __blk_mq_update_nr_hw_queues+0x3bb/0x14e0 block/blk-mq.c:5010 blk_mq_update_nr_hw_queues+0x2a/0x40 block/blk-mq.c:5070 nbd_start_device+0x15b/0xd70 drivers/block/nbd.c:1413 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 other info that might help us debug this: Chain exists of: set->srcu --> &q->q_usage_counter(io)#52 --> &q->sysfs_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&q->sysfs_lock); lock(&q->q_usage_counter(io)#52); lock(&q->sysfs_lock); sync(set->srcu); *** DEADLOCK *** 5 locks held by syz.3.878/10355: #0: ffff888025b0a198 (&nbd->config_lock){+.+.}-{4:4}, at: nbd_ioctl+0x151/0xfd0 drivers/block/nbd.c:1572 #1: ffff888025b0a0d8 (&set->tag_list_lock){+.+.}-{4:4}, at: blk_mq_update_nr_hw_queues+0x20/0x40 block/blk-mq.c:5069 #2: ffff8881437827c8 (&q->q_usage_counter(io)#52){++++}-{0:0}, at: blk_mq_freeze_queue block/blk-mq.c:213 [inline] #2: ffff8881437827c8 (&q->q_usage_counter(io)#52){++++}-{0:0}, at: __blk_mq_update_nr_hw_queues+0x1fc/0x14e0 block/blk-mq.c:5003 #3: ffff888143782800 (&q->q_usage_counter(queue)#36){+.+.}-{0:0}, at: blk_mq_freeze_queue block/blk-mq.c:213 [inline] #3: ffff888143782800 (&q->q_usage_counter(queue)#36){+.+.}-{0:0}, at: __blk_mq_update_nr_hw_queues+0x1fc/0x14e0 block/blk-mq.c:5003 #4: ffff888143782cf8 (&q->sysfs_lock){+.+.}-{4:4}, at: blk_mq_elv_switch_none block/blk-mq.c:4932 [inline] #4: ffff888143782cf8 (&q->sysfs_lock){+.+.}-{4:4}, at: __blk_mq_update_nr_hw_queues+0x446/0x14e0 block/blk-mq.c:5010 stack backtrace: CPU: 0 UID: 0 PID: 10355 Comm: syz.3.878 Not tainted 6.13.0-rc6-syzkaller-00046-g0b7958fa05d5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __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_sync+0xf5/0x190 kernel/locking/lockdep.c:5897 srcu_lock_sync include/linux/srcu.h:170 [inline] __synchronize_srcu+0xa9/0x2a0 kernel/rcu/srcutree.c:1418 blk_mq_wait_quiesce_done block/blk-mq.c:291 [inline] blk_mq_wait_quiesce_done block/blk-mq.c:288 [inline] blk_mq_quiesce_queue block/blk-mq.c:311 [inline] blk_mq_quiesce_queue+0x149/0x1b0 block/blk-mq.c:306 elevator_disable+0x70/0x490 block/elevator.c:671 blk_mq_elv_switch_none block/blk-mq.c:4946 [inline] __blk_mq_update_nr_hw_queues+0x3bb/0x14e0 block/blk-mq.c:5010 blk_mq_update_nr_hw_queues+0x2a/0x40 block/blk-mq.c:5070 nbd_start_device+0x15b/0xd70 drivers/block/nbd.c:1413 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 RIP: 0033:0x7fedddb85d29 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:00007fedde95e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fedddd76080 RCX: 00007fedddb85d29 RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 RBP: 00007fedddc01b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fedddd76080 R15: 00007fff31ce2338