loop0: detected capacity change from 0 to 32768 BTRFS: device fsid a6a605fc-d5f1-4e66-8595-3726e2b761d6 devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5327) BTRFS info (device loop0 state S): first mount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6 BTRFS info (device loop0 state S): using blake2b checksum algorithm workqueue: max_active 2097161 requested for btrfs-worker is out of range, clamping between 1 and 2048 workqueue: max_active 2097161 requested for btrfs-delalloc is out of range, clamping between 1 and 2048 workqueue: max_active 2097161 requested for btrfs-endio is out of range, clamping between 1 and 2048 workqueue: max_active 2097161 requested for btrfs-endio-meta is out of range, clamping between 1 and 2048 workqueue: max_active 2097161 requested for btrfs-rmw is out of range, clamping between 1 and 2048 workqueue: max_active 2097161 requested for btrfs-endio-write is out of range, clamping between 1 and 2048 BTRFS error (device loop0 state ECS): failed to read fs tree: -5 BTRFS error (device loop0 state ECS): open_ctree failed: -5 loop0: detected capacity change from 0 to 32768 ocfs2: Readonly device (7,0) detected. Cluster services will not be used for this mount. Recovery will be skipped. ocfs2: Mounting device (7,0) on (node local, slot 65535) with ordered data mode. warning: `syz.0.0' uses wireless extensions which will stop working for Wi-Fi 7 hardware; use nl80211 ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: kernel/locking/mutex.c:593 at __mutex_lock_common kernel/locking/mutex.c:593 [inline], CPU#0: syz.0.0/5327 WARNING: kernel/locking/mutex.c:593 at __mutex_lock+0x10a4/0x1300 kernel/locking/mutex.c:776, CPU#0: syz.0.0/5327 Modules linked in: 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 04/01/2014 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:593 [inline] RIP: 0010:__mutex_lock+0x10ab/0x1300 kernel/locking/mutex.c:776 Code: 11 90 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 33 02 00 00 83 3d d9 1e 60 04 00 75 13 48 8d 3d 1c 34 63 04 48 c7 c6 c0 e0 cc 8b <67> 48 0f b9 3a 90 e9 ac f0 ff ff 90 0f 0b 90 e9 73 f4 ff ff 90 0f RSP: 0018:ffffc9000da97760 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff92001b52f04 RCX: 0000000000100000 RDX: ffffc9000ec72000 RSI: ffffffff8bcce0c0 RDI: ffffffff90150910 RBP: ffffc9000da97920 R08: ffffffff9011f3c3 R09: 1ffffffff2023e78 R10: dffffc0000000000 R11: fffffbfff2023e79 R12: ffff8880404b4df0 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f64132c66c0(0000) GS:ffff88808ca55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f64124f5880 CR3: 0000000044a8f000 CR4: 0000000000352ef0 Call Trace: ocfs2_trim_fs_lock_res_init+0x33/0x1c0 fs/ocfs2/dlmglue.c:703 ocfs2_trim_fs+0x138/0x2530 fs/ocfs2/alloc.c:7683 ocfs2_ioctl+0x6c1/0x7e0 fs/ocfs2/ioctl.c:932 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f641239c799 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:00007f64132c5fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f6412615fa0 RCX: 00007f641239c799 RDX: 0000200000000000 RSI: 00000000c0185879 RDI: 0000000000000008 RBP: 00007f6412432c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6412616038 R14: 00007f6412615fa0 R15: 00007fff60c8b0c8 ---------------- Code disassembly (best guess): 0: 11 90 48 c1 e8 03 adc %edx,0x3e8c148(%rax) 6: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax b: 84 c0 test %al,%al d: 0f 85 33 02 00 00 jne 0x246 13: 83 3d d9 1e 60 04 00 cmpl $0x0,0x4601ed9(%rip) # 0x4601ef3 1a: 75 13 jne 0x2f 1c: 48 8d 3d 1c 34 63 04 lea 0x463341c(%rip),%rdi # 0x463343f 23: 48 c7 c6 c0 e0 cc 8b mov $0xffffffff8bcce0c0,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 90 nop 30: e9 ac f0 ff ff jmp 0xfffff0e1 35: 90 nop 36: 0f 0b ud2 38: 90 nop 39: e9 73 f4 ff ff jmp 0xfffff4b1 3e: 90 nop 3f: 0f .byte 0xf