loop3: rw=1, sector=3112, nr_sectors = 5336 limit=0 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 fs/gfs2/util.c:159 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5919, name: gfs2_logd/syz:s preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 3 locks held by gfs2_logd/syz:s/5919: #0: ffff888026b59060 (&sdp->sd_log_flush_lock){++++}-{3:3}, at: gfs2_log_flush+0x104/0x24b0 fs/gfs2/log.c:1042 #1: ffff888026b58e88 (&sdp->sd_log_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #1: ffff888026b58e88 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_log_lock fs/gfs2/log.h:32 [inline] #1: ffff888026b58e88 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_flush_revokes+0x52/0x80 fs/gfs2/log.c:814 #2: ffff888026b59248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: signal_our_withdraw fs/gfs2/util.c:152 [inline] #2: ffff888026b59248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: gfs2_withdraw+0x41d/0x13b0 fs/gfs2/util.c:333 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 PID: 5919 Comm: gfs2_logd/syz:s Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 __might_resched+0x491/0x610 kernel/sched/core.c:10208 signal_our_withdraw fs/gfs2/util.c:157 [inline] gfs2_withdraw+0x46b/0x13b0 fs/gfs2/util.c:333 gfs2_ail1_empty+0x7be/0x850 fs/gfs2/log.c:377 gfs2_flush_revokes+0x5c/0x80 fs/gfs2/log.c:815 revoke_lo_before_commit+0x2c/0x5f0 fs/gfs2/lops.c:867 lops_before_commit fs/gfs2/lops.h:42 [inline] gfs2_log_flush+0xb84/0x24b0 fs/gfs2/log.c:1102 gfs2_logd+0x2f8/0xf70 fs/gfs2/log.c:1319 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 BUG: scheduling while atomic: gfs2_logd/syz:s/5919/0x00000002 3 locks held by gfs2_logd/syz:s/5919: #0: ffff888026b59060 (&sdp->sd_log_flush_lock){++++}-{3:3}, at: gfs2_log_flush+0x104/0x24b0 fs/gfs2/log.c:1042 #1: ffff888026b58e88 (&sdp->sd_log_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #1: ffff888026b58e88 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_log_lock fs/gfs2/log.h:32 [inline] #1: ffff888026b58e88 (&sdp->sd_log_lock){+.+.}-{2:2}, at: gfs2_flush_revokes+0x52/0x80 fs/gfs2/log.c:814 #2: ffff888026b59248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: signal_our_withdraw fs/gfs2/util.c:152 [inline] #2: ffff888026b59248 (&sdp->sd_freeze_mutex){+.+.}-{3:3}, at: gfs2_withdraw+0x41d/0x13b0 fs/gfs2/util.c:333 Modules linked in: Preemption disabled at: [<0000000000000000>] 0x0