syzbot has found a reproducer for the following issue on: HEAD commit: 92221e2af10d Merge branch 'for-next/core', remote-tracking.. 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=15b18f43080000 kernel config: https://syzkaller.appspot.com/x/.config?x=e79d82586727c5df dashboard link: https://syzkaller.appspot.com/bug?extid=392ac209604cc18792e5 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=172e6877080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12cad8af080000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8ea7850f2fc1/disk-92221e2a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8b514f934717/vmlinux-92221e2a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+392ac209604cc18792e5@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 64 BFS-fs: bfs_fill_super(): loop0 is unclean, continuing ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 0 PID: 3079 at kernel/locking/mutex.c:582 __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 Modules linked in: CPU: 0 PID: 3079 Comm: syz-executor275 Not tainted 6.0.0-rc4-syzkaller-17255-g92221e2af10d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 lr : __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 sp : ffff8000127938e0 x29: ffff800012793950 x28: ffff80000ee5a000 x27: ffff0000caad0618 x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000002 x23: ffff80000878cbbc x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff0000c8f03e28 x18: 00000000000000c0 x17: ffff80000dd3a698 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: ffff80000d61f820 x11: ff808000081c1fa0 x10: 0000000000000000 x9 : 1d38989ac5d23000 x8 : 1d38989ac5d23000 x7 : 4e5241575f534b43 x6 : ffff8000081965e0 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000028 Call trace: __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 reiserfs_write_lock+0x3c/0x64 fs/reiserfs/lock.c:27 reiserfs_lookup+0xa4/0x1c4 fs/reiserfs/namei.c:364 lookup_open fs/namei.c:3391 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x738/0x11c4 fs/namei.c:3688 do_filp_open+0xdc/0x1b8 fs/namei.c:3718 do_sys_openat2+0xb8/0x22c fs/open.c:1311 do_sys_open fs/open.c:1327 [inline] __do_sys_openat fs/open.c:1343 [inline] __se_sys_openat fs/open.c:1338 [inline] __arm64_sys_openat+0xb0/0xe0 fs/open.c:1338 __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:624 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 irq event stamp: 1073 hardirqs last enabled at (1073): [<ffff80000bfd8fbc>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (1073): [<ffff80000bfd8fbc>] _raw_spin_unlock_irqrestore+0x48/0x8c kernel/locking/spinlock.c:194 hardirqs last disabled at (1072): [<ffff80000bfd8df8>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1072): [<ffff80000bfd8df8>] _raw_spin_lock_irqsave+0xa4/0xb4 kernel/locking/spinlock.c:162 softirqs last enabled at (982): [<ffff80000801c370>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (980): [<ffff80000801c33c>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- Unable to handle kernel execute from non-executable memory at virtual address ffff80000ef5d0a8 Mem abort info: ESR = 0x000000008600000e EC = 0x21: IABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x0e: level 2 permission fault swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001c56f6000 [ffff80000ef5d0a8] pgd=100000023ffff003, p4d=100000023ffff003, pud=100000023fffe003, pmd=00680001c7400701 Internal error: Oops: 8600000e [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 3079 Comm: syz-executor275 Tainted: G W 6.0.0-rc4-syzkaller-17255-g92221e2af10d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : bfs_fill_super.__key+0x0/0x10 lr : get_third_component fs/reiserfs/namei.c:196 [inline] lr : reiserfs_find_entry+0x130/0x298 fs/reiserfs/namei.c:317 sp : ffff800012793960 x29: ffff800012793990 x28: 0000000000000040 x27: ffff0000caad0618 x26: ffff0000c057e750 x25: ffff0000c70db000 x24: 0000000010000000 x23: ffff0000c057e7c0 x22: 000000000000000e x21: ffff8000127939e0 x20: ffff800012793a48 x19: ffff0000cabd87b8 x18: 00000000000000c0 x17: ffff80000dd3a698 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000002 x12: ffff80000d4b94d8 x11: ff80800008754e24 x10: 0000000000000000 x9 : ffff800008754e24 x8 : ffff80000ef5d0a8 x7 : 4e5241575f534b43 x6 : ffff80000878cbbc x5 : 0000000000000000 x4 : ffff8000127939e0 x3 : ffff800012793a48 x2 : 000000000000000e x1 : 000000000000000e x0 : ffff0000c057e7c0 Call trace: bfs_fill_super.__key+0x0/0x10 reiserfs_lookup+0xc4/0x1c4 fs/reiserfs/namei.c:368 lookup_open fs/namei.c:3391 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x738/0x11c4 fs/namei.c:3688 do_filp_open+0xdc/0x1b8 fs/namei.c:3718 do_sys_openat2+0xb8/0x22c fs/open.c:1311 do_sys_open fs/open.c:1327 [inline] __do_sys_openat fs/open.c:1343 [inline] __se_sys_openat fs/open.c:1338 [inline] __arm64_sys_openat+0xb0/0xe0 fs/open.c:1338 __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:624 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:642 el0t_64_sync+0x18c/0x190 Code: 00000000 00000000 00000000 00000000 (00000000) ---[ end trace 0000000000000000 ]---
