loop0: detected capacity change from 0 to 32768 ERROR: (device loop0): xtSearch: xt_getpage: xtree page corrupt ERROR: (device loop0): remounting filesystem as read-only ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: kernel/locking/lockdep.c:238 at hlock_class kernel/locking/lockdep.c:238 [inline], CPU#0: syz.0.0/5334 WARNING: kernel/locking/lockdep.c:238 at check_wait_context kernel/locking/lockdep.c:4854 [inline], CPU#0: syz.0.0/5334 WARNING: kernel/locking/lockdep.c:238 at __lock_acquire+0x39d/0x2cf0 kernel/locking/lockdep.c:5187, CPU#0: syz.0.0/5334 Modules linked in: CPU: 0 UID: 0 PID: 5334 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:hlock_class kernel/locking/lockdep.c:238 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4854 [inline] RIP: 0010:__lock_acquire+0x3a4/0x2cf0 kernel/locking/lockdep.c:5187 Code: 18 00 4c 8b 74 24 08 75 27 90 e8 57 63 f7 02 85 c0 74 1c 83 3d 40 f1 2f 0e 00 75 13 48 8d 3d f3 04 33 0e 48 c7 c6 b8 30 bf 8d <67> 48 0f b9 3a 90 31 c0 0f b6 98 c4 00 00 00 41 8b 45 20 25 ff 1f RSP: 0018:ffffc9000a37efd0 EFLAGS: 00010046 RAX: 0000000000000001 RBX: 0000000000040000 RCX: 0000000000100000 RDX: ffffc90020fa2000 RSI: ffffffff8dbf30b8 RDI: ffffffff8fd23d60 RBP: 0000000000000002 R08: ffffffff8fcf29a3 R09: 1ffffffff1f9e534 R10: dffffc0000000000 R11: fffffbfff1f9e535 R12: 000000000000091a R13: ffff88803f78b040 R14: ffff88803f78a4c0 R15: ffff88803f78aff0 FS: 00007fe0adff56c0(0000) GS:ffff88808cf1d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe0b2956000 CR3: 0000000042345000 CR4: 0000000000352ef0 Call Trace: lock_acquire+0x106/0x330 kernel/locking/lockdep.c:5868 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x40/0x60 kernel/locking/spinlock.c:162 __wake_up_common_lock+0x2f/0x1f0 kernel/sched/wait.c:124 unlock_metapage fs/jfs/jfs_metapage.c:40 [inline] release_metapage+0x13c/0xac0 fs/jfs/jfs_metapage.c:871 xtTruncate+0xecd/0x2f20 fs/jfs/jfs_xtree.c:-1 jfs_truncate_nolock+0x2a7/0x340 fs/jfs/inode.c:381 jfs_truncate fs/jfs/inode.c:420 [inline] jfs_write_failed+0x119/0x190 fs/jfs/inode.c:295 jfs_write_begin+0x6f/0x80 fs/jfs/inode.c:308 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4314 generic_file_write_iter+0x14a/0x680 mm/filemap.c:4457 aio_write+0x5cd/0x870 fs/aio.c:1634 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x7bb/0x14c0 fs/aio.c:2053 __do_sys_io_submit fs/aio.c:2112 [inline] __se_sys_io_submit+0x195/0x340 fs/aio.c:2082 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe0b1b9acb9 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:00007fe0adff5028 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007fe0b1e15fa0 RCX: 00007fe0b1b9acb9 RDX: 0000200000000540 RSI: 0000000000000001 RDI: 00007fe0b2956000 RBP: 00007fe0b1c08bf7 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe0b1e16038 R14: 00007fe0b1e15fa0 R15: 00007ffc670be1e8 ---------------- Code disassembly (best guess): 0: 18 00 sbb %al,(%rax) 2: 4c 8b 74 24 08 mov 0x8(%rsp),%r14 7: 75 27 jne 0x30 9: 90 nop a: e8 57 63 f7 02 call 0x2f76366 f: 85 c0 test %eax,%eax 11: 74 1c je 0x2f 13: 83 3d 40 f1 2f 0e 00 cmpl $0x0,0xe2ff140(%rip) # 0xe2ff15a 1a: 75 13 jne 0x2f 1c: 48 8d 3d f3 04 33 0e lea 0xe3304f3(%rip),%rdi # 0xe330516 23: 48 c7 c6 b8 30 bf 8d mov $0xffffffff8dbf30b8,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 90 nop 30: 31 c0 xor %eax,%eax 32: 0f b6 98 c4 00 00 00 movzbl 0xc4(%rax),%ebx 39: 41 8b 45 20 mov 0x20(%r13),%eax 3d: 25 .byte 0x25 3e: ff 1f lcall *(%rdi)