------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 0 PID: 27338 at kernel/locking/mutex.c:582 __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582 Modules linked in: CPU: 0 PID: 27338 Comm: syz-executor.3 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 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 : ffff80001598ba10 x29: ffff80001598ba80 x28: ffff80000ee2b000 x27: 0000000000000000 x26: 0000000000000000 x25: ffff80000876040c x24: 0000000000000002 x23: ffff80000878a408 x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff00010b7eeb28 x18: 0000000000000231 x17: ffff80000bffd6bc x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: 0000000000040000 x11: 00000000000012dc x10: ffff800018473000 x9 : 69b0ddc73fb36a00 x8 : 69b0ddc73fb36a00 x7 : 4e5241575f534b43 x6 : ffff80000819545c 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/0x68c 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+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 irq event stamp: 1525 hardirqs last enabled at (1525): [] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline] hardirqs last enabled at (1525): [] el0_svc_common+0x40/0x220 arch/arm64/kernel/syscall.c:107 hardirqs last disabled at (1524): [] el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 softirqs last enabled at (1520): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1518): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address 000c000000000034 Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004 CM = 0, WnR = 0 [000c000000000034] address between user and kernel address ranges Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 27338 Comm: syz-executor.3 Tainted: G W 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : owner_on_cpu include/linux/sched.h:2269 [inline] pc : mutex_can_spin_on_owner kernel/locking/mutex.c:409 [inline] pc : mutex_optimistic_spin+0x1c8/0x254 kernel/locking/mutex.c:452 lr : __mutex_lock_common+0x1b4/0xca8 kernel/locking/mutex.c:607 sp : ffff80001598b9b0 x29: ffff80001598b9c0 x28: ffff80000ee2b000 x27: ffff80000cb4f733 x26: 0000000000000000 x25: ffff80000876040c x24: ffff00010b7eeb90 x23: ffff80000878a408 x22: ffff80000d30c000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff00010b7eeb28 x18: 0000000000000231 x17: ffff80000bffd6bc x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: 0000000000040000 x11: 00000000000012dc x10: ffff80000d30c000 x9 : 0000000000000003 x8 : 000c000000000000 x7 : 4e5241575f534b43 x6 : ffff80000878a408 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff00010b7eeb28 Call trace: mutex_can_spin_on_owner kernel/locking/mutex.c:408 [inline] mutex_optimistic_spin+0x1c8/0x254 kernel/locking/mutex.c:452 __mutex_lock_common+0x1b4/0xca8 kernel/locking/mutex.c:607 __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/0x68c 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+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 Code: 37080148 f9400268 f27df108 54000080 (b9403509) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 37080148 tbnz w8, #1, 0x28 4: f9400268 ldr x8, [x19] 8: f27df108 ands x8, x8, #0xfffffffffffffff8 c: 54000080 b.eq 0x1c // b.none * 10: b9403509 ldr w9, [x8, #52] <-- trapping instruction