======================================================
WARNING: possible circular locking dependency detected
5.15.189-syzkaller #0 Not tainted
------------------------------------------------------
syz.0.916/8187 is trying to acquire lock:
ffff88807d118ae0 (&sdp->sd_quota_mutex){+.+.}-{3:3}, at: do_qc+0xca/0x730 fs/gfs2/quota.c:678
but task is already holding lock:
ffff88805f103c28 (&ip->i_rw_mutex){++++}-{3:3}, at: sweep_bh_for_rgrps fs/gfs2/bmap.c:1514 [inline]
ffff88805f103c28 (&ip->i_rw_mutex){++++}-{3:3}, at: punch_hole+0x23a1/0x3520 fs/gfs2/bmap.c:1839
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&ip->i_rw_mutex){++++}-{3:3}:
down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498
__gfs2_iomap_get+0x155/0x13e0 fs/gfs2/bmap.c:858
gfs2_iomap_get fs/gfs2/bmap.c:1398 [inline]
gfs2_block_map+0x229/0x670 fs/gfs2/bmap.c:1213
bh_get+0x227/0x5f0 fs/gfs2/quota.c:385
qdsb_get+0x21c/0x3c0 fs/gfs2/quota.c:518
gfs2_quota_hold+0x194/0x5d0 fs/gfs2/quota.c:604
punch_hole+0xd81/0x3520 fs/gfs2/bmap.c:1800
gfs2_iomap_end+0x4f2/0x6b0 fs/gfs2/bmap.c:1159
iomap_iter+0x22a/0xdb0 fs/iomap/iter.c:62
iomap_file_buffered_write+0x4e3/0x5b0 fs/iomap/buffered-io.c:814
gfs2_file_buffered_write+0x470/0x900 fs/gfs2/file.c:1058
gfs2_file_write_iter+0x467/0x11d0 fs/gfs2/file.c:1166
call_write_iter include/linux/fs.h:2172 [inline]
aio_write+0x513/0x720 fs/aio.c:1594
__io_submit_one fs/aio.c:-1 [inline]
io_submit_one+0x6ac/0x1330 fs/aio.c:2013
__do_sys_io_submit fs/aio.c:2072 [inline]
__se_sys_io_submit+0x190/0x300 fs/aio.c:2042
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #0 (&sdp->sd_quota_mutex){+.+.}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
__mutex_lock_common+0x1eb/0x2390 kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
do_qc+0xca/0x730 fs/gfs2/quota.c:678
gfs2_quota_change+0x2f5/0x8e0 fs/gfs2/quota.c:1295
punch_hole+0x2f8b/0x3520 fs/gfs2/bmap.c:1940
gfs2_iomap_end+0x4f2/0x6b0 fs/gfs2/bmap.c:1159
iomap_iter+0x22a/0xdb0 fs/iomap/iter.c:62
iomap_file_buffered_write+0x4e3/0x5b0 fs/iomap/buffered-io.c:814
gfs2_file_buffered_write+0x470/0x900 fs/gfs2/file.c:1058
gfs2_file_write_iter+0x467/0x11d0 fs/gfs2/file.c:1166
call_write_iter include/linux/fs.h:2172 [inline]
aio_write+0x513/0x720 fs/aio.c:1594
__io_submit_one fs/aio.c:-1 [inline]
io_submit_one+0x6ac/0x1330 fs/aio.c:2013
__do_sys_io_submit fs/aio.c:2072 [inline]
__se_sys_io_submit+0x190/0x300 fs/aio.c:2042
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ip->i_rw_mutex);
lock(&sdp->sd_quota_mutex);
lock(&ip->i_rw_mutex);
lock(&sdp->sd_quota_mutex);
*** DEADLOCK ***
4 locks held by syz.0.916/8187:
#0: ffff88805f103790 (&sb->s_type->i_mutex_key#45){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
#0: ffff88805f103790 (&sb->s_type->i_mutex_key#45){+.+.}-{3:3}, at: gfs2_file_write_iter+0x33b/0x11d0 fs/gfs2/file.c:1123
#1: ffff888078970650 (sb_internal#7){.+.+}-{0:0}, at: gfs2_trans_begin+0x6b/0xe0 fs/gfs2/trans.c:118
#2: ffff88807d1190a8 (&sdp->sd_log_flush_lock){++++}-{3:3}, at: __gfs2_trans_begin+0x50f/0x880 fs/gfs2/trans.c:87
#3: ffff88805f103c28 (&ip->i_rw_mutex){++++}-{3:3}, at: sweep_bh_for_rgrps fs/gfs2/bmap.c:1514 [inline]
#3: ffff88805f103c28 (&ip->i_rw_mutex){++++}-{3:3}, at: punch_hole+0x23a1/0x3520 fs/gfs2/bmap.c:1839
stack backtrace:
CPU: 1 PID: 8187 Comm: syz.0.916 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
check_noncircular+0x274/0x310 kernel/locking/lockdep.c:2133
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
__mutex_lock_common+0x1eb/0x2390 kernel/locking/mutex.c:596
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
do_qc+0xca/0x730 fs/gfs2/quota.c:678
gfs2_quota_change+0x2f5/0x8e0 fs/gfs2/quota.c:1295
punch_hole+0x2f8b/0x3520 fs/gfs2/bmap.c:1940
gfs2_iomap_end+0x4f2/0x6b0 fs/gfs2/bmap.c:1159
iomap_iter+0x22a/0xdb0 fs/iomap/iter.c:62
iomap_file_buffered_write+0x4e3/0x5b0 fs/iomap/buffered-io.c:814
gfs2_file_buffered_write+0x470/0x900 fs/gfs2/file.c:1058
gfs2_file_write_iter+0x467/0x11d0 fs/gfs2/file.c:1166
call_write_iter include/linux/fs.h:2172 [inline]
aio_write+0x513/0x720 fs/aio.c:1594
__io_submit_one fs/aio.c:-1 [inline]
io_submit_one+0x6ac/0x1330 fs/aio.c:2013
__do_sys_io_submit fs/aio.c:2072 [inline]
__se_sys_io_submit+0x190/0x300 fs/aio.c:2042
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1c6b18bbe9
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:00007f1c693a8038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f1c6b3b3180 RCX: 00007f1c6b18bbe9
RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f1c693a9000
RBP: 00007f1c6b20ee19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1c6b3b3218 R14: 00007f1c6b3b3180 R15: 00007ffcdd381538
attempt to access beyond end of device
loop0: rw=1, want=5086, limit=64
gfs2: fsid=syz:syz.0: Error 10 writing to journal, jid=0
gfs2: fsid=syz:syz.0: about to withdraw this file system
gfs2: fsid=syz:syz.0: warning: assertion "!qd->qd_change" failed at function = gfs2_quota_cleanup, file = fs/gfs2/quota.c, line = 1485
CPU: 1 PID: 8187 Comm: syz.0.916 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
gfs2_assert_warn_i+0x18f/0x2c0 fs/gfs2/util.c:416
gfs2_quota_cleanup+0x4b4/0x6a0 fs/gfs2/quota.c:1485
gfs2_make_fs_ro+0x491/0x5d0 fs/gfs2/super.c:557
signal_our_withdraw fs/gfs2/util.c:166 [inline]
gfs2_withdraw+0x5f9/0x1460 fs/gfs2/util.c:343
gfs2_log_flush+0x1e09/0x2610 fs/gfs2/log.c:1150
gfs2_jdata_writepages+0xf5/0x150 fs/gfs2/aops.c:417
do_writepages+0x48d/0x6d0 mm/page-writeback.c:2386
filemap_fdatawrite_wbc+0x1eb/0x240 mm/filemap.c:400
__filemap_fdatawrite_range mm/filemap.c:433 [inline]
filemap_fdatawrite_range+0xbc/0x100 mm/filemap.c:451
gfs2_fsync+0xdb/0x340 fs/gfs2/file.c:754
generic_write_sync include/linux/fs.h:2989 [inline]
gfs2_file_write_iter+0x60d/0x11d0 fs/gfs2/file.c:1168
call_write_iter include/linux/fs.h:2172 [inline]
aio_write+0x513/0x720 fs/aio.c:1594
__io_submit_one fs/aio.c:-1 [inline]
io_submit_one+0x6ac/0x1330 fs/aio.c:2013
__do_sys_io_submit fs/aio.c:2072 [inline]
__se_sys_io_submit+0x190/0x300 fs/aio.c:2042
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1c6b18bbe9
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:00007f1c693a8038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f1c6b3b3180 RCX: 00007f1c6b18bbe9
RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f1c693a9000
RBP: 00007f1c6b20ee19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1c6b3b3218 R14: 00007f1c6b3b3180 R15: 00007ffcdd381538
gfs2: fsid=syz:syz.0: Journal recovery skipped for jid 0 until next mount.
gfs2: fsid=syz:syz.0: Glock dequeues delayed: 0
gfs2: fsid=syz:syz.0: File system withdrawn
CPU: 1 PID: 8187 Comm: syz.0.916 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
gfs2_withdraw+0x111b/0x1460 fs/gfs2/util.c:355
gfs2_log_flush+0x1e09/0x2610 fs/gfs2/log.c:1150
gfs2_jdata_writepages+0xf5/0x150 fs/gfs2/aops.c:417
do_writepages+0x48d/0x6d0 mm/page-writeback.c:2386
filemap_fdatawrite_wbc+0x1eb/0x240 mm/filemap.c:400
__filemap_fdatawrite_range mm/filemap.c:433 [inline]
filemap_fdatawrite_range+0xbc/0x100 mm/filemap.c:451
gfs2_fsync+0xdb/0x340 fs/gfs2/file.c:754
generic_write_sync include/linux/fs.h:2989 [inline]
gfs2_file_write_iter+0x60d/0x11d0 fs/gfs2/file.c:1168
call_write_iter include/linux/fs.h:2172 [inline]
aio_write+0x513/0x720 fs/aio.c:1594
__io_submit_one fs/aio.c:-1 [inline]
io_submit_one+0x6ac/0x1330 fs/aio.c:2013
__do_sys_io_submit fs/aio.c:2072 [inline]
__se_sys_io_submit+0x190/0x300 fs/aio.c:2042
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1c6b18bbe9
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:00007f1c693a8038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f1c6b3b3180 RCX: 00007f1c6b18bbe9
RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f1c693a9000
RBP: 00007f1c6b20ee19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1c6b3b3218 R14: 00007f1c6b3b3180 R15: 00007ffcdd381538