DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 0 PID: 13867 at kernel/locking/mutex.c:582 __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 Modules linked in: CPU: 0 PID: 13867 Comm: syz-executor.2 Not tainted 6.2.0-rc6-syzkaller-17549-gca72d58361ee #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 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 : ffff800013e9ba10 x29: ffff800013e9ba80 x28: ffff80000f0ad000 x27: 0000000000000000 x26: 0000000000000000 x25: ffff800008784480 x24: 0000000000000002 x23: ffff8000087ae4d8 x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff0000c9101e28 x18: 00000000000002c6 x17: ffff80000c17e8bc x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: 0000000000040000 x11: 0000000000001318 x10: ffff80001dea1000 x9 : 3b3dc18496613600 x8 : 3b3dc18496613600 x7 : 4e5241575f534b43 x6 : ffff80000c138a2c 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_readdir_inode+0x9c/0x684 fs/reiserfs/dir.c:79 reiserfs_readdir+0x28/0x38 fs/reiserfs/dir.c:274 iterate_dir+0x114/0x28c __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x80/0x204 fs/readdir.c:354 __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+0x48/0x104 arch/arm64/kernel/syscall.c:193 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:591 irq event stamp: 1301 hardirqs last enabled at (1301): [] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline] hardirqs last enabled at (1301): [] el0_svc_common+0x40/0x220 arch/arm64/kernel/syscall.c:107 hardirqs last disabled at (1300): [] el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 softirqs last enabled at (1296): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1294): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address 0000000c00001008 Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=000000014bd3e000 [0000000c00001008] pgd=080000014f454003, p4d=080000014f454003, pud=0000000000000000 Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 13867 Comm: syz-executor.2 Tainted: G W 6.2.0-rc6-syzkaller-17549-gca72d58361ee #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : search_by_key+0x10c/0x1894 fs/reiserfs/stree.c:648 lr : pathrelse fs/reiserfs/stree.c:384 [inline] lr : search_by_key+0xec/0x1894 fs/reiserfs/stree.c:641 sp : ffff800013e9b930 x29: ffff800013e9ba60 x28: ffff00010b363000 x27: ffff800013e9bc10 x26: ffff00010d580190 x25: ffff800008784480 x24: 0000000000000000 x23: 000000000000003d x22: ffff00010b363000 x21: ffff800013e9bbd0 x20: ffff800013e9bc10 x19: 0000000000000001 x18: 00000000000002c6 x17: ffff80000c17e8bc x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: 0000000000040000 x11: 000000000003ffff x10: ffff80001dea1000 x9 : 0000000000000002 x8 : 0000000c00001000 x7 : 4e5241575f534b43 x6 : ffff8000087ae4d8 x5 : 0000000000000000 x4 : 0000000000000003 x3 : 0000000000000008 x2 : ffff800013e9bc10 x1 : 0000000000000001 x0 : 0000000000000001 Call trace: search_by_key+0x10c/0x1894 fs/reiserfs/stree.c:648 search_by_entry_key+0x44/0x370 fs/reiserfs/namei.c:125 reiserfs_readdir_inode+0x100/0x684 fs/reiserfs/dir.c:98 reiserfs_readdir+0x28/0x38 fs/reiserfs/dir.c:274 iterate_dir+0x114/0x28c __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x80/0x204 fs/readdir.c:354 __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+0x48/0x104 arch/arm64/kernel/syscall.c:193 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:591 Code: f9433f88 52800049 52800103 f9400508 (b9400901) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f9433f88 ldr x8, [x28, #1656] 4: 52800049 mov w9, #0x2 // #2 8: 52800103 mov w3, #0x8 // #8 c: f9400508 ldr x8, [x8, #8] * 10: b9400901 ldr w1, [x8, #8] <-- trapping instruction