loop3: detected capacity change from 0 to 32768 ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 1 PID: 1069 at kernel/locking/mutex.c:582 __mutex_lock_common+0x504/0xf64 kernel/locking/mutex.c:582 Modules linked in: CPU: 1 PID: 1069 Comm: syz-executor.3 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 : ffff800018d5b9e0 x29: ffff800018d5ba50 x28: ffff80000eeb4000 x27: 0000000000000000 x26: 0000000000000000 x25: ffff800008748194 x24: 0000000000000002 x23: ffff800008771cc4 x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: ffff0001280c6d28 x18: ffff80000bfae9bc x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: 0000000000040000 x11: 000000000000132f x10: ffff800012f4d000 x9 : d64e8ef020e87b00 x8 : d64e8ef020e87b00 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: 81589 hardirqs last enabled at (81589): [] local_daif_restore arch/arm64/include/asm/daifflags.h:75 [inline] hardirqs last enabled at (81589): [] el0_svc_common+0x40/0x180 arch/arm64/kernel/syscall.c:107 hardirqs last disabled at (81588): [] el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 softirqs last enabled at (81584): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (81582): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address ffff00001a043144 Mem abort info: ESR = 0x0000000096000021 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x21: alignment fault Data abort info: ISV = 0, ISS = 0x00000021 CM = 0, WnR = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001c54c1000 [ffff00001a043144] pgd=180000023fff9003, p4d=180000023fff9003, pud=180000023fff8003, pmd=180000023ff27003, pte=006800005a043707 Internal error: Oops: 0000000096000021 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 1069 Comm: syz-executor.3 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: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __lse__cmpxchg_case_mb_64 arch/arm64/include/asm/atomic_lse.h:287 [inline] pc : __cmpxchg_case_mb_64 arch/arm64/include/asm/cmpxchg.h:130 [inline] pc : __cmpxchg_mb arch/arm64/include/asm/cmpxchg.h:175 [inline] pc : osq_lock+0x110/0x1f4 kernel/locking/osq_lock.c:162 lr : osq_lock+0x38/0x1f4 kernel/locking/osq_lock.c:94 sp : ffff800018d5b950 x29: ffff800018d5b950 x28: ffff80000eeb4000 x27: ffff80000cb92fd4 x26: 0000000000000000 x25: ffff800008748194 x24: ffff0001280c6d90 x23: ffff800008771cc4 x22: ffff80000d2d7040 x21: ffff00001a043144 x20: ffff0001fefd2040 x19: ffff0001280c6d70 x18: ffff80000bfae9bc x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: 0000000000040000 x11: 0000000000000000 x10: ffff0001fefd2050 x9 : 000000000000000a x8 : ffff0001fefd2040 x7 : 4e5241575f534b43 x6 : ffff800008771cc4 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : ffff0001fefd2040 x0 : ffff00001a043144 Call trace: __lse__cmpxchg_case_mb_64 arch/arm64/include/asm/atomic_lse.h:287 [inline] __cmpxchg_case_mb_64 arch/arm64/include/asm/cmpxchg.h:130 [inline] __cmpxchg_mb arch/arm64/include/asm/cmpxchg.h:175 [inline] osq_lock+0x110/0x1f4 kernel/locking/osq_lock.c:162 mutex_optimistic_spin+0x1e0/0x258 kernel/locking/mutex.c:460 __mutex_lock_common+0x1b8/0xf64 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/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: aa1503e0 aa1403e1 aa1f03e2 aa0103e8 (c8e8fea2) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: aa1503e0 mov x0, x21 4: aa1403e1 mov x1, x20 8: aa1f03e2 mov x2, xzr c: aa0103e8 mov x8, x1 * 10: c8e8fea2 casal x8, x2, [x21] <-- trapping instruction