------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 1 PID: 8466 at kernel/locking/mutex.c:582 __mutex_lock_common+0x146c/0x1f60 kernel/locking/mutex.c:582 Modules linked in: CPU: 1 PID: 8466 Comm: syz.6.963 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __mutex_lock_common+0x146c/0x1f60 kernel/locking/mutex.c:582 lr : __mutex_lock_common+0x146c/0x1f60 kernel/locking/mutex.c:582 sp : ffff8000212d73e0 x29: ffff8000212d7550 x28: 1ffff0000388210c x27: ffff80001c410000 x26: dfff800000000000 x25: ffff70000425ae94 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000000 x21: ffff8000212d74c0 x20: 0000000000000000 x19: ffff0000ce22c028 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80000804309c x15: 0000000000000002 x14: 0000000000000001 x13: 1fffe00033eac9a3 x12: 0000000000080000 x11: 000000000007ffff x10: ffff80002dd10000 x9 : ce4fdc3fe7230c00 x8 : ce4fdc3fe7230c00 x7 : 205b5d3132383737 x6 : ffff800008314548 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff80000853857c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: __mutex_lock_common+0x146c/0x1f60 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+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_lookup+0x150/0x3e0 fs/reiserfs/namei.c:364 lookup_open fs/namei.c:3468 [inline] open_last_lookups fs/namei.c:3558 [inline] path_openat+0xc98/0x26bc fs/namei.c:3788 do_filp_open+0x194/0x384 fs/namei.c:3818 do_sys_openat2+0x134/0x3f4 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1347 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 6691 hardirqs last enabled at (6691): [] kasan_quarantine_put+0xc4/0x200 mm/kasan/quarantine.c:242 hardirqs last disabled at (6690): [] kasan_quarantine_put+0x108/0x200 mm/kasan/quarantine.c:215 softirqs last enabled at (6642): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (6640): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ================================================================================ UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:131:9 index 14124 is out of range for type 'unsigned long[8]' CPU: 1 PID: 8466 Comm: syz.6.963 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 ubsan_epilogue+0x14/0x48 lib/ubsan.c:151 __ubsan_handle_out_of_bounds+0xd0/0xf8 lib/ubsan.c:282 decode_tail kernel/locking/qspinlock.c:131 [inline] queued_spin_lock_slowpath+0x8a8/0xc18 kernel/locking/qspinlock.c:471 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x2f4/0x2f8 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+0x370/0x1f60 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+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_lookup+0x150/0x3e0 fs/reiserfs/namei.c:364 lookup_open fs/namei.c:3468 [inline] open_last_lookups fs/namei.c:3558 [inline] path_openat+0xc98/0x26bc fs/namei.c:3788 do_filp_open+0x194/0x384 fs/namei.c:3818 do_sys_openat2+0x134/0x3f4 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1347 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 ================================================================================ Unable to handle kernel paging request at virtual address ffff800015179fb0 KASAN: probably user-memory-access in range [0x00000000a8bcfd80-0x00000000a8bcfd87] 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=000000020ddb9000 [ffff800015179fb0] pgd=100000023ffff003, p4d=100000023ffff003, pud=100000023fffe003, pmd=100000023fffa003, pte=0000000000000000 Internal error: Oops: 0000000096000047 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 8466 Comm: syz.6.963 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : queued_spin_lock_slowpath+0x598/0xc18 kernel/locking/qspinlock.c:474 lr : decode_tail kernel/locking/qspinlock.c:131 [inline] lr : queued_spin_lock_slowpath+0x8a8/0xc18 kernel/locking/qspinlock.c:471 sp : ffff8000212d71e0 x29: ffff8000212d7280 x28: ffff800015179fb0 x27: 1fffe00019c45806 x26: ffff800015210f40 x25: 1fffe00033eaf1f0 x24: dfff800000000000 x23: ffff70000425ae40 x22: ffff00019f578f88 x21: ffff800015179fb0 x20: ffff00019f578f80 x19: ffff0000ce22c030 x18: ffff800011b8bf60 x17: 3d3d3d3d3d3d3d3d x16: ffff800008193830 x15: 0000000000000002 x14: ffff700002fbf8bc x13: 1ffff00002fbf8bc x12: 0000000000080000 x11: 000000000007ffff x10: ffff800015179f80 x9 : 0000000000000003 x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000212d6c38 x4 : ffff8000152f4cc0 x3 : ffff80000819387c x2 : 0000000000000001 x1 : 0000000000000004 x0 : ffff00019f578f88 Call trace: queued_spin_lock_slowpath+0x598/0xc18 kernel/locking/qspinlock.c:477 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x2f4/0x2f8 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+0x370/0x1f60 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+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_lookup+0x150/0x3e0 fs/reiserfs/namei.c:364 lookup_open fs/namei.c:3468 [inline] open_last_lookups fs/namei.c:3558 [inline] path_openat+0xc98/0x26bc fs/namei.c:3788 do_filp_open+0x194/0x384 fs/namei.c:3818 do_sys_openat2+0x134/0x3f4 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __arm64_sys_openat+0x118/0x14c fs/open.c:1347 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: aa1503e0 97937b92 aa1603e0 52800081 (f90002b4) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: aa1503e0 mov x0, x21 4: 97937b92 bl 0xfffffffffe4dee4c 8: aa1603e0 mov x0, x22 c: 52800081 mov w1, #0x4 // #4 * 10: f90002b4 str x20, [x21] <-- trapping instruction