gfs2: fsid=syz:syz.0: found 1 quota changes
loop2: detected capacity change from 32768 to 64
syz.2.988: attempt to access beyond end of device
loop2: rw=1, sector=320, nr_sectors = 8 limit=64
gfs2: fsid=syz:syz.0: Error 10 writing to journal, jid=0
gfs2: fsid=syz:syz.0: fatal: I/O error(s)
gfs2: fsid=syz:syz.0: about to withdraw this file system
BUG: sleeping function called from invalid context at kernel/sched/completion.c:101
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 7422, name: syz.2.988
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
6 locks held by syz.2.988/7422:
 #0: ffff88807dadcae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1038
 #1: ffff888059576460 (sb_writers#20){.+.+}-{0:0}, at: vfs_write+0x270/0x9a0 fs/read_write.c:580
 #2: ffff888055bdd1f0 (&sb->s_type->i_mutex_key#30){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
 #2: ffff888055bdd1f0 (&sb->s_type->i_mutex_key#30){+.+.}-{3:3}, at: gfs2_file_write_iter+0x35d/0xe90 fs/gfs2/file.c:1115
 #3: ffff88807a2bd058 (&sdp->sd_log_flush_lock){++++}-{3:3}, at: gfs2_log_flush+0x23/0x40 fs/gfs2/log.c:1179
 #4: ffff88807a2bce80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #4: ffff88807a2bce80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_log_lock fs/gfs2/log.h:32 [inline]
 #4: ffff88807a2bce80 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_flush_revokes+0x4e/0x80 fs/gfs2/log.c:815
 #5: ffff88807a2bd248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: signal_our_withdraw fs/gfs2/util.c:155 [inline]
 #5: ffff88807a2bd248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: gfs2_withdraw+0x506/0x1450 fs/gfs2/util.c:345
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 7422 Comm: syz.2.988 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 __might_resched+0x489/0x5f0 kernel/sched/core.c:9970
 __wait_for_common kernel/sched/completion.c:101 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x8e/0x590 kernel/sched/completion.c:138
 kthread_stop+0x197/0x650 kernel/kthread.c:711
 signal_our_withdraw fs/gfs2/util.c:159 [inline]
 gfs2_withdraw+0x56f/0x1450 fs/gfs2/util.c:345
 gfs2_ail1_empty+0x7d1/0x860 fs/gfs2/log.c:377
 gfs2_flush_revokes+0x58/0x80 fs/gfs2/log.c:816
 revoke_lo_before_commit+0x28/0x5e0 fs/gfs2/lops.c:869
 lops_before_commit fs/gfs2/lops.h:40 [inline]
 __gfs2_log_flush+0xbf4/0x24e0 fs/gfs2/log.c:1103
 gfs2_log_flush+0x30/0x40 fs/gfs2/log.c:1180
 gfs2_write_inode+0x1e8/0x370 fs/gfs2/super.c:457
 write_inode fs/fs-writeback.c:1536 [inline]
 __writeback_single_inode+0x76c/0x1170 fs/fs-writeback.c:1753
 writeback_single_inode+0x3d2/0x8e0 fs/fs-writeback.c:1809
 sync_inode_metadata+0xdc/0x140 fs/fs-writeback.c:2872
 gfs2_fsync+0x1a7/0x330 fs/gfs2/file.c:758
 generic_write_sync include/linux/fs.h:2973 [inline]
 gfs2_file_write_iter+0xb39/0xe90 fs/gfs2/file.c:1160
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x482/0x9a0 fs/read_write.c:584
 ksys_write+0x14d/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6a3619f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6a37018028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6a36425fa0 RCX: 00007f6a3619f559
RDX: 000000000000000b RSI: 0000200000029e80 RDI: 0000000000000006
RBP: 00007f6a36236b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6a36426038 R14: 00007f6a36425fa0 R15: 00007fff3e04eec8
 </TASK>
BUG: scheduling while atomic: syz.2.988/7422/0x00000002
6 locks held by syz.2.988/7422:
 #0: ffff88807dadcae8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ae/0x360 fs/file.c:1038
 #1: ffff888059576460 (sb_writers#20
){.+.+}-{0:0}, at: vfs_write+0x270/0x9a0 fs/read_write.c:580
 #2: ffff888055bdd1f0 (&sb->s_type->i_mutex_key#30){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:764 [inline]
 #2: ffff888055bdd1f0 (&sb->s_type->i_mutex_key#30){+.+.}-{3:3}, at: gfs2_file_write_iter+0x35d/0xe90 fs/gfs2/file.c:1115
 #3: ffff88807a2bd058 (&sdp->sd_log_flush_lock){++++}-{3:3}, at: gfs2_log_flush+0x23/0x40 fs/gfs2/log.c:1179
 #4: ffff88807a2bce80 (&sdp->sd_log_lock
){+.+.}-{2:2}
, at: spin_lock include/linux/spinlock.h:351 [inline]
, at: gfs2_log_lock fs/gfs2/log.h:32 [inline]
, at: gfs2_flush_revokes+0x4e/0x80 fs/gfs2/log.c:815
 #5: ffff88807a2bd248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: signal_our_withdraw fs/gfs2/util.c:155 [inline]
 #5: ffff88807a2bd248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: gfs2_withdraw+0x506/0x1450 fs/gfs2/util.c:345
Modules linked in:
Preemption disabled at:
[<0000000000000000>] 0x0