------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 0 PID: 8068 at kernel/locking/mutex.c:582 __mutex_lock_common+0x504/0xf64 kernel/locking/mutex.c:582 Modules linked in: CPU: 0 PID: 8068 Comm: syz-executor.2 Not tainted 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __mutex_lock_common+0x504/0xf64 kernel/locking/mutex.c:582 lr : __mutex_lock_common+0x504/0xf64 kernel/locking/mutex.c:582 sp : ffff80001430b9e0 x29: ffff80001430ba50 x28: ffff80000eeb4000 x27: 0000000000000000 x26: 0000000000000000 x25: ffff800008748194 x24: 0000000000000002 x23: ffff800008771cc4 x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff000114132028 x18: ffff80000bfae9bc x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: 0000000000040000 x11: 000000000000120e x10: ffff8000190e5000 x9 : 5768bbc74133f900 x8 : 5768bbc74133f900 x7 : 4e5241575f534b43 x6 : ffff80000bf650d4 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000028 Call trace: __mutex_lock_common+0x504/0xf64 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/0x660 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+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c 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: 3687 hardirqs last enabled at (3687): [] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline] hardirqs last enabled at (3687): [] el0_svc_common+0x40/0x180 arch/arm64/kernel/syscall.c:107 hardirqs last disabled at (3686): [] el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 softirqs last enabled at (3682): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (3680): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address ffff80000d2d70b0 Mem abort info: ESR = 0x0000000096000047 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x07: level 3 translation fault Data abort info: ISV = 0, ISS = 0x00000047 CM = 0, WnR = 1 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001c54c1000 [ffff80000d2d70b0] pgd=100000023ffff003, p4d=100000023ffff003, pud=100000023fffe003, pmd=100000023fffa003, pte=0000000000000000 Internal error: Oops: 0000000096000047 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 8068 Comm: syz-executor.2 Tainted: G W 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : queued_spin_lock_slowpath+0x20c/0x630 kernel/locking/qspinlock.c:474 lr : trace_contention_begin include/trace/events/lock.h:95 [inline] lr : queued_spin_lock_slowpath+0x16c/0x630 kernel/locking/qspinlock.c:405 sp : ffff80001430b940 x29: ffff80001430b940 x28: ffff80000eeb4000 x27: ffff80000cb92fd4 x26: 0000000000000000 x25: ffff000114e00000 x24: ffff0001fefd2080 x23: 0000000000000000 x22: ffff80000d36d068 x21: ffff80000d2d7080 x20: 0000000000000000 x19: ffff000114132030 x18: 000000000013dbed x17: ffff80000bfae9bc x16: 0000000000000002 x15: 0000000000000000 x14: 0000000040000000 x13: 0000000000000002 x12: ffff0001fefd2088 x11: 0000000000000000 x10: 0000000000040000 x9 : ffff80000d2d70b0 x8 : ffff0001fefd2080 x7 : 0000000000000000 x6 : ffff80000bf63ecc x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000001 x1 : ffff80000ce696ef x0 : 0000000000000001 Call trace: decode_tail kernel/locking/qspinlock.c:131 [inline] queued_spin_lock_slowpath+0x20c/0x630 kernel/locking/qspinlock.c:471 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x10c/0x110 kernel/locking/spinlock_debug.c:115 __raw_spin_lock include/linux/spinlock_api_smp.h:134 [inline] _raw_spin_lock+0x5c/0x6c kernel/locking/spinlock.c:154 __mutex_lock_common+0x2a8/0xf64 kernel/locking/mutex.c:617 __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/0x660 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+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c 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: 9100210c 8b0b06cb 8b2952a9 f85f816b (f8296968) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 9100210c add x12, x8, #0x8 4: 8b0b06cb add x11, x22, x11, lsl #1 8: 8b2952a9 add x9, x21, w9, uxtw #4 c: f85f816b ldur x11, [x11, #-8] * 10: f8296968 str x8, [x11, x9] <-- trapping instruction