On Tue, Jun 07, 2022 at 12:16:29AM -0700, syzbot wrote: > HEAD commit: d1dc87763f40 assoc_array: Fix BUG_ON during garbage collect > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=14979947f00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=c51cd24814bb5665 > dashboard link: https://syzkaller.appspot.com/bug?extid=2c93b863a7698df84bad > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > Unfortunately, I don't have any reproducer for this issue yet. > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+2c93b863a7698df84bad@xxxxxxxxxxxxxxxxxxxxxxxxx > > ntfs3: loop3: Different NTFS' sector size (2048) and media sector size (512) > ntfs3: loop3: Different NTFS' sector size (2048) and media sector size (512) > ------------[ cut here ]------------ > releasing a pinned lock This has to be a memory corruption. The lock being released here is the mapping->i_pages xa_lock. That lock is never pinned. So somebody has corrupted lockdep's data structures. The only locks which are pinned are: drivers/gpu/drm/i915/gt/intel_context.c: rq->cookie = lockdep_pin_lock(&ce->timeline->mutex); drivers/gpu/drm/i915/gt/selftest_timeline.c: to->cookie = lockdep_pin_lock(&to->context->timeline->mutex); drivers/gpu/drm/i915/i915_request.c: rq->cookie = lockdep_pin_lock(&tl->mutex); kernel/sched/deadline.c: rf.cookie = lockdep_pin_lock(__rq_lockp(rq)); kernel/sched/sched.h: rf->cookie = lockdep_pin_lock(__rq_lockp(rq)); > WARNING: CPU: 2 PID: 21856 at kernel/locking/lockdep.c:5349 __lock_release kernel/locking/lockdep.c:5349 [inline] > WARNING: CPU: 2 PID: 21856 at kernel/locking/lockdep.c:5349 lock_release+0x6a9/0x780 kernel/locking/lockdep.c:5685 > Modules linked in: > CPU: 2 PID: 21856 Comm: syz-executor.3 Not tainted 5.18.0-syzkaller-11972-gd1dc87763f40 #0 > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 > RIP: 0010:__lock_release kernel/locking/lockdep.c:5349 [inline] > RIP: 0010:lock_release+0x6a9/0x780 kernel/locking/lockdep.c:5685 > Code: 68 00 e9 5a fa ff ff 4c 89 f7 e8 f2 3d 68 00 e9 36 fc ff ff e8 78 3d 68 00 e9 f5 fb ff ff 48 c7 c7 e0 9a cc 89 e8 d1 84 d3 07 <0f> 0b e9 87 fb ff ff e8 3b b3 18 08 48 c7 c7 4c 44 bb 8d e8 4f 3d > RSP: 0018:ffffc90003497a00 EFLAGS: 00010082 > RAX: 0000000000000000 RBX: ffff88801e742c48 RCX: 0000000000000000 > RDX: 0000000000040000 RSI: ffffffff81601908 RDI: fffff52000692f32 > RBP: 1ffff92000692f42 R08: 0000000000000005 R09: 0000000000000000 > R10: 0000000080000001 R11: 0000000000000001 R12: ffff88804fb22498 > R13: 0000000000000002 R14: ffff88801e742c18 R15: ffff88801e7421c0 > FS: 00007f64be4cb700(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f64be4cc000 CR3: 00000000669a7000 CR4: 0000000000150ee0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Call Trace: > <TASK> > __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:157 [inline] > _raw_spin_unlock_irq+0x12/0x40 kernel/locking/spinlock.c:202 > spin_unlock_irq include/linux/spinlock.h:399 [inline] > truncate_inode_pages_final+0x5f/0x80 mm/truncate.c:484 > ntfs_evict_inode+0x16/0xa0 fs/ntfs3/inode.c:1750 > evict+0x2ed/0x6b0 fs/inode.c:664 > iput_final fs/inode.c:1744 [inline] > iput.part.0+0x562/0x820 fs/inode.c:1770 > iput+0x58/0x70 fs/inode.c:1760 > ntfs_fill_super+0x2d66/0x3730 fs/ntfs3/super.c:1180 > get_tree_bdev+0x440/0x760 fs/super.c:1292 > vfs_get_tree+0x89/0x2f0 fs/super.c:1497 > do_new_mount fs/namespace.c:3040 [inline] > path_mount+0x1320/0x1fa0 fs/namespace.c:3370 > do_mount fs/namespace.c:3383 [inline] > __do_sys_mount fs/namespace.c:3591 [inline] > __se_sys_mount fs/namespace.c:3568 [inline] > __x64_sys_mount+0x27f/0x300 fs/namespace.c:3568 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x46/0xb0 > RIP: 0033:0x7f64bd28a63a > Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007f64be4caf88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 > RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f64bd28a63a > RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f64be4cafe0 > RBP: 00007f64be4cb020 R08: 00007f64be4cb020 R09: 0000000020000000 > R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 > R13: 0000000020000100 R14: 00007f64be4cafe0 R15: 000000002007a980 > </TASK> > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
