Hello, syzbot found the following issue on: HEAD commit: 9500fc6e9e60 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=1143d819880000 kernel config: https://syzkaller.appspot.com/x/.config?x=b25c9f218686dd5e dashboard link: https://syzkaller.appspot.com/bug?extid=3ac57409fb0bec311927 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17437209880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12c6d64e880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/1363e60652f7/disk-9500fc6e.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/fcc4da811bb6/vmlinux-9500fc6e.xz kernel image: https://storage.googleapis.com/syzbot-assets/0b554298f1fa/Image-9500fc6e.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/b7cda1fc67db/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3ac57409fb0bec311927@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 8226 ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 30056 at kernel/locking/lockdep.c:231 check_wait_context kernel/locking/lockdep.c:4729 [inline] WARNING: CPU: 1 PID: 30056 at kernel/locking/lockdep.c:231 __lock_acquire+0x2b0/0x3084 kernel/locking/lockdep.c:5005 Modules linked in: CPU: 1 PID: 30056 Comm: syz-executor132 Not tainted 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4729 [inline] pc : __lock_acquire+0x2b0/0x3084 kernel/locking/lockdep.c:5005 lr : hlock_class kernel/locking/lockdep.c:231 [inline] lr : check_wait_context kernel/locking/lockdep.c:4729 [inline] lr : __lock_acquire+0x298/0x3084 kernel/locking/lockdep.c:5005 sp : ffff8000141c37c0 x29: ffff8000141c38a0 x28: 0000000000000001 x27: ffff0000cd731a68 x26: ffff0000cabb3a2f x25: ffff0000cd732470 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000000 x19: ffff5600124b28ca x18: 0000000000000202 x17: ffff8001f1cdd000 x16: ffff80000dc18158 x15: ffff0000cd731a40 x14: 0000000000000000 x13: 0000000000000012 x12: ffff80000d96cfd0 x11: ff808000081c6510 x10: ffff80000ddda198 x9 : 24fb2561f6434100 x8 : 0000000000000000 x7 : 4e5241575f534b43 x6 : ffff80000c0b2b74 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000001 x0 : 0000000000000016 Call trace: check_wait_context kernel/locking/lockdep.c:4729 [inline] __lock_acquire+0x2b0/0x3084 kernel/locking/lockdep.c:5005 lock_acquire+0x100/0x1f8 kernel/locking/lockdep.c:5668 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] writeback_single_inode+0x44/0x54c fs/fs-writeback.c:1676 write_inode_now+0xb0/0xdc fs/fs-writeback.c:2736 iput_final fs/inode.c:1734 [inline] iput+0x1e4/0x324 fs/inode.c:1773 ntfs_fill_super+0xc30/0x14a4 fs/ntfs3/super.c:1278 get_tree_bdev+0x1e8/0x2a0 fs/super.c:1324 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1358 vfs_get_tree+0x40/0x140 fs/super.c:1531 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x890 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] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 2649 hardirqs last enabled at (2649): [<ffff800008165fe4>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1366 [inline] hardirqs last enabled at (2649): [<ffff800008165fe4>] finish_lock_switch+0x94/0xe8 kernel/sched/core.c:4950 hardirqs last disabled at (2648): [<ffff80000c0afb1c>] __schedule+0x84/0x594 kernel/sched/core.c:6402 softirqs last enabled at (1848): [<ffff8000080102e4>] _stext+0x2e4/0x37c softirqs last disabled at (1821): [<ffff800008017c88>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79 ---[ end trace 0000000000000000 ]--- Unable to handle kernel NULL pointer dereference at virtual address 00000000000000b8 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=00000001101ea000 [00000000000000b8] pgd=0800000112a3a003, p4d=0800000112a3a003, pud=0800000111e89003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 30056 Comm: syz-executor132 Tainted: G W 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4729 [inline] pc : __lock_acquire+0x2d0/0x3084 kernel/locking/lockdep.c:5005 lr : hlock_class kernel/locking/lockdep.c:231 [inline] lr : check_wait_context kernel/locking/lockdep.c:4729 [inline] lr : __lock_acquire+0x298/0x3084 kernel/locking/lockdep.c:5005 sp : ffff8000141c37c0 x29: ffff8000141c38a0 x28: 0000000000000001 x27: ffff0000cd731a68 x26: ffff0000cabb3a2f x25: ffff0000cd732470 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000001 x21: 0000000000000000 x20: 0000000000000000 x19: ffff5600124b28ca x18: 0000000000000202 x17: ffff8001f1cdd000 x16: ffff80000dc18158 x15: ffff0000cd731a40 x14: 0000000000000000 x13: 0000000000000012 x12: ffff80000d96cfd0 x11: ff808000081c6510 x10: ffff80000ddda198 x9 : 00000000000408ca x8 : 0000000000000000 x7 : 4e5241575f534b43 x6 : ffff80000c0b2b74 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000001 x0 : 0000000000000016 Call trace: hlock_class kernel/locking/lockdep.c:222 [inline] check_wait_context kernel/locking/lockdep.c:4730 [inline] __lock_acquire+0x2d0/0x3084 kernel/locking/lockdep.c:5005 lock_acquire+0x100/0x1f8 kernel/locking/lockdep.c:5668 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] writeback_single_inode+0x44/0x54c fs/fs-writeback.c:1676 write_inode_now+0xb0/0xdc fs/fs-writeback.c:2736 iput_final fs/inode.c:1734 [inline] iput+0x1e4/0x324 fs/inode.c:1773 ntfs_fill_super+0xc30/0x14a4 fs/ntfs3/super.c:1278 get_tree_bdev+0x1e8/0x2a0 fs/super.c:1324 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1358 vfs_get_tree+0x40/0x140 fs/super.c:1531 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x890 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] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Code: d002e1ca 91056210 9106614a b9400329 (3942e114) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: d002e1ca adrp x10, 0x5c3a000 4: 91056210 add x16, x16, #0x158 8: 9106614a add x10, x10, #0x198 c: b9400329 ldr w9, [x25] * 10: 3942e114 ldrb w20, [x8, #184] <-- trapping instruction --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
