loop0: detected capacity change from 0 to 32768 gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" gfs2: fsid=syz:syz: Now mounting FS (format 1801)... gfs2: fsid=syz:syz.0: journal 0 mapped with 1 extents in 6ms gfs2: fsid=syz:syz.0: first mount done, others may mount loop0: detected capacity change from 32768 to 64 gfs2: fsid=syz:syz.0: fatal: I/O error - block = 9377, function = gfs2_pin, file = fs/gfs2/lops.c, line = 52 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: 5327, name: syz.0.0 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 6 locks held by syz.0.0/5327: #0: ffff88804c0e8420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:508 #1: ffff888042fe87e8 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff888042fe87e8 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: open_last_lookups fs/namei.c:3892 [inline] #1: ffff888042fe87e8 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: path_openat+0x8da/0x3830 fs/namei.c:4131 #2: ffff88804c0e8610 (sb_internal#2){.+.+}-{0:0}, at: gfs2_trans_begin+0x6f/0xe0 fs/gfs2/trans.c:118 #3: ffff888000310e50 (&sdp->sd_log_flush_lock){++++}-{4:4}, at: __gfs2_trans_begin+0x515/0x890 fs/gfs2/trans.c:87 #4: ffff888000310c78 (&sdp->sd_log_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline] #4: ffff888000310c78 (&sdp->sd_log_lock){+.+.}-{3:3}, at: gfs2_log_lock fs/gfs2/log.h:32 [inline] #4: ffff888000310c78 (&sdp->sd_log_lock){+.+.}-{3:3}, at: gfs2_trans_add_meta+0x156/0xa10 fs/gfs2/trans.c:265 #5: ffff888000310fe8 (&sdp->sd_freeze_mutex){+.+.}-{4:4}, at: signal_our_withdraw fs/gfs2/util.c:152 [inline] #5: ffff888000310fe8 (&sdp->sd_freeze_mutex){+.+.}-{4:4}, at: gfs2_withdraw+0x444/0x1430 fs/gfs2/util.c:333 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 UID: 0 PID: 5327 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 __might_resched+0x495/0x610 kernel/sched/core.c:8927 signal_our_withdraw fs/gfs2/util.c:157 [inline] gfs2_withdraw+0x492/0x1430 fs/gfs2/util.c:333 gfs2_pin+0x129/0x380 fs/gfs2/lops.c:52 gfs2_trans_add_meta+0x693/0xa10 fs/gfs2/trans.c:302 do_init_dirent+0xd0/0x370 fs/gfs2/dir.c:721 gfs2_init_dirent fs/gfs2/dir.c:742 [inline] gfs2_dir_add+0x1b9a/0x21d0 fs/gfs2/dir.c:1814 link_dinode+0x32e/0x500 fs/gfs2/inode.c:640 gfs2_create_inode+0x126e/0x1560 fs/gfs2/inode.c:875 gfs2_atomic_open+0x116/0x200 fs/gfs2/inode.c:1387 atomic_open fs/namei.c:3656 [inline] lookup_open fs/namei.c:3767 [inline] open_last_lookups fs/namei.c:3895 [inline] path_openat+0xf66/0x3830 fs/namei.c:4131 do_filp_open+0x1fa/0x410 fs/namei.c:4161 do_sys_openat2+0x121/0x1c0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_open fs/open.c:1460 [inline] __se_sys_open fs/open.c:1456 [inline] __x64_sys_open+0x11e/0x150 fs/open.c:1456 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ffb6bb8efc9 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:00007ffb6cab4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffb6bde5fa0 RCX: 00007ffb6bb8efc9 RDX: 0000000000000000 RSI: 0000000000109042 RDI: 0000200000000000 RBP: 00007ffb6bc11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffb6bde6038 R14: 00007ffb6bde5fa0 R15: 00007ffe6256bad8 BUG: scheduling while atomic: syz.0.0/5327/0x00000002 6 locks held by syz.0.0/5327: #0: ffff88804c0e8420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:508 #1: ffff888042fe87e8 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #1: ffff888042fe87e8 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: open_last_lookups fs/namei.c:3892 [inline] #1: ffff888042fe87e8 (&type->i_mutex_dir_key#8){+.+.}-{4:4}, at: path_openat+0x8da/0x3830 fs/namei.c:4131 #2: ffff88804c0e8610 (sb_internal#2){.+.+}-{0:0}, at: gfs2_trans_begin+0x6f/0xe0 fs/gfs2/trans.c:118 #3: ffff888000310e50 (&sdp->sd_log_flush_lock){++++}-{4:4}, at: __gfs2_trans_begin+0x515/0x890 fs/gfs2/trans.c:87 #4: ffff888000310c78 (&sdp->sd_log_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline] #4: ffff888000310c78 (&sdp->sd_log_lock){+.+.}-{3:3}, at: gfs2_log_lock fs/gfs2/log.h:32 [inline] #4: ffff888000310c78 (&sdp->sd_log_lock){+.+.}-{3:3}, at: gfs2_trans_add_meta+0x156/0xa10 fs/gfs2/trans.c:265 #5: ffff888000310fe8 (&sdp->sd_freeze_mutex){+.+.}-{4:4}, at: signal_our_withdraw fs/gfs2/util.c:152 [inline] #5: ffff888000310fe8 (&sdp->sd_freeze_mutex){+.+.}-{4:4}, at: gfs2_withdraw+0x444/0x1430 fs/gfs2/util.c:333 Modules linked in: Preemption disabled at: [<0000000000000000>] 0x0