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 0ms gfs2: fsid=syz:syz.0: first mount done, others may mount ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888045940e38, owner = 0x0, curr 0xffff888000878000, list empty WARNING: CPU: 0 PID: 5321 at kernel/locking/rwsem.c:1368 __up_write kernel/locking/rwsem.c:1367 [inline] WARNING: CPU: 0 PID: 5321 at kernel/locking/rwsem.c:1368 up_write+0x502/0x590 kernel/locking/rwsem.c:1630 Modules linked in: CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted 6.14.0-rc2-syzkaller-00034-gfebbc555cf0f #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__up_write kernel/locking/rwsem.c:1367 [inline] RIP: 0010:up_write+0x502/0x590 kernel/locking/rwsem.c:1630 Code: c7 c7 a0 9a 0a 8c 48 c7 c6 c0 9c 0a 8c 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 73 09 e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6a fd ff ff 48 c7 c1 14 90 1b 90 80 e1 07 80 c1 03 RSP: 0018:ffffc9000d42fd20 EFLAGS: 00010292 RAX: bfd67d97683a3400 RBX: ffffffff8c0a9b80 RCX: ffff888000878000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000d42fdf0 R08: ffffffff817ffc22 R09: fffffbfff1cfa588 R10: dffffc0000000000 R11: fffffbfff1cfa588 R12: 0000000000000000 R13: ffff888045940e38 R14: 1ffff92001a85fac R15: dffffc0000000000 FS: 00007f90597ac6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000043f3c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inode_unlock include/linux/fs.h:882 [inline] done_path_create fs/namei.c:4133 [inline] do_mknodat+0x4c5/0x5b0 fs/namei.c:4256 __do_sys_mknod fs/namei.c:4274 [inline] __se_sys_mknod fs/namei.c:4272 [inline] __x64_sys_mknod+0x8c/0xa0 fs/namei.c:4272 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f905898cde9 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:00007f90597ac038 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 RAX: ffffffffffffffda RBX: 00007f9058ba6080 RCX: 00007f905898cde9 RDX: 0000000000000400 RSI: 0000000000001000 RDI: 0000400000000280 RBP: 00007f9058a0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9058ba6080 R15: 00007ffcac34ef48