loop1: detected capacity change from 0 to 32768 ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 1 PID: 31937 at kernel/locking/mutex.c:582 __mutex_lock_common+0x1660/0x21a0 kernel/locking/mutex.c:582 Modules linked in: CPU: 1 PID: 31937 Comm: syz-executor.1 Not tainted 6.7.0-rc5-syzkaller-gd5b235ec8eab #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __mutex_lock_common+0x1660/0x21a0 kernel/locking/mutex.c:582 lr : __mutex_lock_common+0x1660/0x21a0 kernel/locking/mutex.c:582 sp : ffff80009c5e72e0 x29: ffff80009c5e7470 x28: dfff800000000000 x27: 1ffff000125472e8 x26: ffff800092a39000 x25: ffff7000138bce78 x24: 0000000000000000 x23: 0000000000000000 x22: ffff800080e5d068 x21: 0000000000000000 x20: 0000000000000000 x19: ffff0000da87f628 x18: ffff80009c5e7240 x17: 0000000000000000 x16: ffff80008a82e2a0 x15: 0000000000000001 x14: 1fffe0003682a63a x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000040000 x10: 0000000000002a79 x9 : d9c996115706ca00 x8 : d9c996115706ca00 x7 : 000000000004cb00 x6 : 000000000004ca58 x5 : ffff80009c5e6bd8 x4 : ffff80008e5d0bd8 x3 : ffff8000805ad1c0 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: __mutex_lock_common+0x1660/0x21a0 kernel/locking/mutex.c:582 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_lookup+0x128/0x45c fs/reiserfs/namei.c:364 __lookup_slow+0x250/0x374 fs/namei.c:1694 lookup_slow+0x60/0x84 fs/namei.c:1711 walk_component fs/namei.c:2002 [inline] link_path_walk+0x7c8/0xc5c fs/namei.c:2329 path_lookupat+0x90/0x3d0 fs/namei.c:2482 filename_lookup+0x1d4/0x4e0 fs/namei.c:2512 user_path_at_empty+0x5c/0x84 fs/namei.c:2911 user_path_at include/linux/namei.h:57 [inline] __do_sys_chroot fs/open.c:599 [inline] __se_sys_chroot fs/open.c:593 [inline] __arm64_sys_chroot+0xc0/0x3bc fs/open.c:593 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 irq event stamp: 74571 hardirqs last enabled at (74571): [] seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline] hardirqs last enabled at (74571): [] read_seqbegin+0x80/0x144 include/linux/seqlock.h:847 hardirqs last disabled at (74570): [] seqcount_lockdep_reader_access include/linux/seqlock.h:101 [inline] hardirqs last disabled at (74570): [] read_seqbegin+0x3c/0x144 include/linux/seqlock.h:847 softirqs last enabled at (74540): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (74538): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ================================================================================ UBSAN: array-index-out-of-bounds in kernel/locking/osq_lock.c:34:9 index 23 is out of range for type 'unsigned long[8]' CPU: 1 PID: 31937 Comm: syz-executor.1 Tainted: G W 6.7.0-rc5-syzkaller-gd5b235ec8eab #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 dump_stack+0x1c/0x28 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:348 decode_cpu kernel/locking/osq_lock.c:34 [inline] osq_lock+0x444/0x464 kernel/locking/osq_lock.c:111 mutex_optimistic_spin+0x264/0x49c kernel/locking/mutex.c:460 __mutex_lock_common+0x1bc/0x21a0 kernel/locking/mutex.c:607 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_lookup+0x128/0x45c fs/reiserfs/namei.c:364 __lookup_slow+0x250/0x374 fs/namei.c:1694 lookup_slow+0x60/0x84 fs/namei.c:1711 walk_component fs/namei.c:2002 [inline] link_path_walk+0x7c8/0xc5c fs/namei.c:2329 path_lookupat+0x90/0x3d0 fs/namei.c:2482 filename_lookup+0x1d4/0x4e0 fs/namei.c:2512 user_path_at_empty+0x5c/0x84 fs/namei.c:2911 user_path_at include/linux/namei.h:57 [inline] __do_sys_chroot fs/open.c:599 [inline] __se_sys_chroot fs/open.c:593 [inline] __arm64_sys_chroot+0xc0/0x3bc fs/open.c:593 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 ================================================================================ Unable to handle kernel paging request at virtual address ffff80008e45bb80 KASAN: probably user-memory-access in range [0x00000004722ddc00-0x00000004722ddc07] 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, ISS2 = 0x00000000 CM = 0, WnR = 1, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001af25f000 [ffff80008e45bb80] pgd=100000023ffff003, p4d=100000023ffff003, pud=100000023fffe003, pmd=100000023fff9003, pte=0000000000000000 Internal error: Oops: 0000000096000047 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 31937 Comm: syz-executor.1 Tainted: G W 6.7.0-rc5-syzkaller-gd5b235ec8eab #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : osq_lock+0x154/0x464 kernel/locking/osq_lock.c:126 lr : decode_cpu kernel/locking/osq_lock.c:34 [inline] lr : osq_lock+0x444/0x464 kernel/locking/osq_lock.c:111 sp : ffff80009c5e7220 x29: ffff80009c5e7230 x28: 1fffe0003682cf71 x27: 1fffe0003682cf72 x26: ffff800092a39000 x25: dfff800000000000 x24: ffff80008e45bb80 x23: ffff0001b4167b88 x22: ffff0001b4167b90 x21: ffff80008e45bb80 x20: ffff0001b4167b80 x19: ffff0000da87f670 x18: ffff80009c5e7240 x17: 3d3d3d3d3d3d3d3d x16: ffff80008a82e2a0 x15: ffff7000122a5088 x14: 1ffff000122a5088 x13: 0000000000000004 x12: ffffffffffffffff x11: 0000000000040000 x10: 00000000000296b3 x9 : 0000000000000000 x8 : 0000000000000000 x7 : 000000000004ec18 x6 : 000000000004ebd8 x5 : ffff80009c5e6ad8 x4 : ffff80008e5d12e0 x3 : ffff8000801b80a8 x2 : 0000000000000001 x1 : 0000000000000002 x0 : 00000000ffffffff Call trace: osq_lock+0x154/0x464 kernel/locking/osq_lock.c:126 mutex_optimistic_spin+0x264/0x49c kernel/locking/mutex.c:460 __mutex_lock_common+0x1bc/0x21a0 kernel/locking/mutex.c:607 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:799 reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27 reiserfs_lookup+0x128/0x45c fs/reiserfs/namei.c:364 __lookup_slow+0x250/0x374 fs/namei.c:1694 lookup_slow+0x60/0x84 fs/namei.c:1711 walk_component fs/namei.c:2002 [inline] link_path_walk+0x7c8/0xc5c fs/namei.c:2329 path_lookupat+0x90/0x3d0 fs/namei.c:2482 filename_lookup+0x1d4/0x4e0 fs/namei.c:2512 user_path_at_empty+0x5c/0x84 fs/namei.c:2911 user_path_at include/linux/namei.h:57 [inline] __do_sys_chroot fs/open.c:599 [inline] __se_sys_chroot fs/open.c:593 [inline] __arm64_sys_chroot+0xc0/0x3bc fs/open.c:593 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Code: 38796908 34000068 aa1503e0 941ac33d (f90002b4) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 38796908 ldrb w8, [x8, x25] 4: 34000068 cbz w8, 0x10 8: aa1503e0 mov x0, x21 c: 941ac33d bl 0x6b0d00 * 10: f90002b4 str x20, [x21] <-- trapping instruction