ext4 filesystem being mounted at /4/file0 supports timestamps until 2038-01-19 (0x7fffffff)
======================================================
WARNING: possible circular locking dependency detected
6.13.0-rc4-syzkaller-00069-g8379578b11d5 #0 Not tainted
------------------------------------------------------
syz.7.932/10708 is trying to acquire lock:
ffff88805887dbb0 (&ei->i_data_sem
){++++}-{4:4}, at: ext4_truncate+0xdd5/0x1270 fs/ext4/inode.c:4212
but task is already holding lock:
ffff88805887dec0 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:863 [inline]
ffff88805887dec0 (mapping.invalidate_lock){++++}-{4:4}, at: ext4_truncate_failed_write fs/ext4/truncate.h:20 [inline]
ffff88805887dec0 (mapping.invalidate_lock){++++}-{4:4}, at: ext4_write_begin+0x8d0/0x1140 fs/ext4/inode.c:1243
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #7 (mapping.invalidate_lock){++++}-{4:4}:
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
page_cache_async_ra+0x5cb/0x820 mm/readahead.c:674
do_async_mmap_readahead mm/filemap.c:3231 [inline]
filemap_fault+0xd69/0x2820 mm/filemap.c:3330
__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
__get_user_pages_locked mm/gup.c:1760 [inline]
get_dump_page+0xff/0x230 mm/gup.c:2278
dump_user_range+0x135/0x8c0 fs/coredump.c:943
elf_core_dump+0x287c/0x3a50 fs/binfmt_elf.c:2129
do_coredump+0x3ada/0x49e0 fs/coredump.c:758
get_signal+0x230b/0x26c0 kernel/signal.c:3002
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
-> #6 (&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
-> #5 (&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:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
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
-> #4 (&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:1222 [inline]
scsi_execute_cmd+0x1eb/0xf40 drivers/scsi/scsi_lib.c:304
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:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
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->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]
loop_reconfigure_limits+0x407/0x8c0 drivers/block/loop.c:998
loop_set_block_size drivers/block/loop.c:1473 [inline]
lo_simple_ioctl drivers/block/loop.c:1496 [inline]
lo_ioctl+0x901/0x18b0 drivers/block/loop.c:1559
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
-> #2 (&q->q_usage_counter(io)#17){++++}-{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
__ext4_read_bh fs/ext4/super.c:181 [inline]
ext4_read_bh_nowait+0x199/0x250 fs/ext4/super.c:193
ext4_read_block_bitmap_nowait+0xeac/0x1810 fs/ext4/balloc.c:551
ext4_mb_prefetch+0x292/0x370 fs/ext4/mballoc.c:2749
ext4_mb_regular_allocator+0x18d8/0x3f90 fs/ext4/mballoc.c:2898
ext4_mb_new_blocks+0x287f/0x4e30 fs/ext4/mballoc.c:6217
ext4_ext_map_blocks+0x1b80/0x5aa0 fs/ext4/extents.c:4379
ext4_map_create_blocks fs/ext4/inode.c:516 [inline]
ext4_map_blocks+0x457/0x1370 fs/ext4/inode.c:702
ext4_getblk+0x17f/0x890 fs/ext4/inode.c:849
ext4_bread+0x2c/0x190 fs/ext4/inode.c:912
ext4_quota_write+0x219/0x610 fs/ext4/super.c:7285
write_blk+0x131/0x220 fs/quota/quota_tree.c:70
do_insert_tree+0xddd/0x1a10 fs/quota/quota_tree.c:407
do_insert_tree+0x1410/0x1a10 fs/quota/quota_tree.c:402
do_insert_tree+0x1410/0x1a10 fs/quota/quota_tree.c:402
do_insert_tree+0x1410/0x1a10 fs/quota/quota_tree.c:402
dq_insert_tree fs/quota/quota_tree.c:432 [inline]
qtree_write_dquot+0x248/0x660 fs/quota/quota_tree.c:451
v2_write_dquot+0x1b1/0x2a0 fs/quota/quota_v2.c:372
dquot_acquire+0x3a4/0x6f0 fs/quota/dquot.c:470
ext4_acquire_dquot+0x27f/0x4e0 fs/ext4/super.c:6934
dqget+0x694/0x1160 fs/quota/dquot.c:977
__dquot_initialize+0x588/0xd50 fs/quota/dquot.c:1505
ext4_process_orphan+0x47/0x410 fs/ext4/orphan.c:329
ext4_orphan_cleanup+0x742/0x1210 fs/ext4/orphan.c:474
__ext4_fill_super fs/ext4/super.c:5610 [inline]
ext4_fill_super+0x9631/0xaab0 fs/ext4/super.c:5733
get_tree_bdev_flags+0x38e/0x620 fs/super.c:1636
vfs_get_tree+0x92/0x380 fs/super.c:1814
do_new_mount fs/namespace.c:3507 [inline]
path_mount+0x14e6/0x1f20 fs/namespace.c:3834
do_mount fs/namespace.c:3847 [inline]
__do_sys_mount fs/namespace.c:4057 [inline]
__se_sys_mount fs/namespace.c:4034 [inline]
__x64_sys_mount+0x294/0x320 fs/namespace.c:4034
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 (&lg->lg_mutex){+.+.}-{4:4}:
__mutex_lock_common kernel/locking/mutex.c:585 [inline]
__mutex_lock+0x19b/0xa60 kernel/locking/mutex.c:735
ext4_mb_group_or_file fs/ext4/mballoc.c:5786 [inline]
ext4_mb_initialize_context+0x814/0xdf0 fs/ext4/mballoc.c:5830
ext4_mb_new_blocks+0x963/0x4e30 fs/ext4/mballoc.c:6204
ext4_ext_map_blocks+0x1b80/0x5aa0 fs/ext4/extents.c:4379
ext4_map_create_blocks fs/ext4/inode.c:516 [inline]
ext4_map_blocks+0x457/0x1370 fs/ext4/inode.c:702
mpage_map_one_extent fs/ext4/inode.c:2219 [inline]
mpage_map_and_submit_extent fs/ext4/inode.c:2272 [inline]
ext4_do_writepages+0x198d/0x32d0 fs/ext4/inode.c:2735
ext4_writepages+0x303/0x730 fs/ext4/inode.c:2824
do_writepages+0x1b6/0x820 mm/page-writeback.c:2702
__writeback_single_inode+0x166/0xfa0 fs/fs-writeback.c:1680
writeback_sb_inodes+0x606/0xfa0 fs/fs-writeback.c:1976
__writeback_inodes_wb+0xff/0x2e0 fs/fs-writeback.c:2047
wb_writeback+0x803/0xb80 fs/fs-writeback.c:2158
wb_check_background_flush fs/fs-writeback.c:2228 [inline]
wb_do_writeback fs/fs-writeback.c:2316 [inline]
wb_workfn+0x730/0xbc0 fs/fs-writeback.c:2343
process_one_work+0x9c8/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
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
-> #0 (&ei->i_data_sem){++++}-{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_write+0x93/0x200 kernel/locking/rwsem.c:1577
ext4_truncate+0xdd5/0x1270 fs/ext4/inode.c:4212
ext4_truncate_failed_write fs/ext4/truncate.h:22 [inline]
ext4_write_begin+0x8f3/0x1140 fs/ext4/inode.c:1243
generic_perform_write+0x2bd/0x920 mm/filemap.c:4055
ext4_buffered_write_iter+0x119/0x3c0 fs/ext4/file.c:299
ext4_file_write_iter+0x9e1/0x1be0 fs/ext4/file.c:717
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/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
other info that might help us debug this:
Chain exists of:
&ei->i_data_sem --> &mm->mmap_lock --> mapping.invalidate_lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(mapping.invalidate_lock);
lock(&mm->mmap_lock);
lock(mapping.invalidate_lock);
lock(&ei->i_data_sem);
*** DEADLOCK ***
4 locks held by syz.7.932/10708:
#0: ffff88807dfb2478 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x267/0x390 fs/file.c:1191
#1: ffff88807dca8420 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:731
#2: ffff88805887dd20 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: inode_lock include/linux/fs.h:818 [inline]
#2: ffff88805887dd20 (&sb->s_type->i_mutex_key#8){++++}-{4:4}, at: ext4_buffered_write_iter+0xaa/0x3c0 fs/ext4/file.c:294
#3: ffff88805887dec0 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock include/linux/fs.h:863 [inline]
#3: ffff88805887dec0 (mapping.invalidate_lock){++++}-{4:4}, at: ext4_truncate_failed_write fs/ext4/truncate.h:20 [inline]
#3: ffff88805887dec0 (mapping.invalidate_lock){++++}-{4:4}, at: ext4_write_begin+0x8d0/0x1140 fs/ext4/inode.c:1243
stack backtrace:
CPU: 0 UID: 0 PID: 10708 Comm: syz.7.932 Not tainted 6.13.0-rc4-syzkaller-00069-g8379578b11d5 #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_write+0x93/0x200 kernel/locking/rwsem.c:1577
ext4_truncate+0xdd5/0x1270 fs/ext4/inode.c:4212
ext4_truncate_failed_write fs/ext4/truncate.h:22 [inline]
ext4_write_begin+0x8f3/0x1140 fs/ext4/inode.c:1243
generic_perform_write+0x2bd/0x920 mm/filemap.c:4055
ext4_buffered_write_iter+0x119/0x3c0 fs/ext4/file.c:299
ext4_file_write_iter+0x9e1/0x1be0 fs/ext4/file.c:717
new_sync_write fs/read_write.c:586 [inline]
vfs_write+0x5b1/0x1150 fs/read_write.c:679
ksys_write+0x12b/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
RIP: 0033:0x7f5995d85d29
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:00007f5996c19038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f5995f75fa0 RCX: 00007f5995d85d29
RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000004
RBP: 00007f5995e01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5995f75fa0 R15: 00007fff55421168
</TASK>