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Message-ID: <67134efc.050a0220.34b26a.0002.GAE@google.com> Date: Fri, 18 Oct 2024 23:17:32 -0700 From: syzbot <syzbot+d7935821694d430624ea@...kaller.appspotmail.com> To: jlbec@...lplan.org, joseph.qi@...ux.alibaba.com, linux-kernel@...r.kernel.org, mark@...heh.com, ocfs2-devel@...ts.linux.dev, syzkaller-bugs@...glegroups.com Subject: Re: [syzbot] [ocfs2?] INFO: trying to register non-static key in ocfs2_dlm_shutdown syzbot has found a reproducer for the following issue on: HEAD commit: b04ae0f45168 Merge tag 'v6.12-rc3-smb3-client-fixes' of gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=179fb487980000 kernel config: https://syzkaller.appspot.com/x/.config?x=cfbd94c114a3d407 dashboard link: https://syzkaller.appspot.com/bug?extid=d7935821694d430624ea compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11635240580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10227c5f980000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-b04ae0f4.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3e40a4ec7885/vmlinux-b04ae0f4.xz kernel image: https://storage.googleapis.com/syzbot-assets/9312d8ec05d3/bzImage-b04ae0f4.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/f8241812bcfe/mount_2.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d7935821694d430624ea@...kaller.appspotmail.com loop0: detected capacity change from 0 to 32768 ocfs2: Readonly device (7,0) detected. Cluster services will not be used for this mount. Recovery will be skipped. ocfs2: Mounting device (7,0) on (node local, slot 65535) with ordered data mode. INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 UID: 0 PID: 5091 Comm: syz-executor302 Not tainted 6.12.0-rc3-syzkaller-00319-gb04ae0f45168 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 assign_lock_key+0x241/0x280 kernel/locking/lockdep.c:981 register_lock_class+0x1cf/0x980 kernel/locking/lockdep.c:1295 __lock_acquire+0xf0/0x2050 kernel/locking/lockdep.c:5077 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 ocfs2_mark_lockres_freeing+0x15e/0x690 fs/ocfs2/dlmglue.c:3513 ocfs2_simple_drop_lockres fs/ocfs2/dlmglue.c:3569 [inline] ocfs2_drop_osb_locks fs/ocfs2/dlmglue.c:3577 [inline] ocfs2_dlm_shutdown+0x3a/0x240 fs/ocfs2/dlmglue.c:3387 ocfs2_dismount_volume+0x487/0x8f0 fs/ocfs2/super.c:1918 generic_shutdown_super+0x139/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1696 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x24f/0x310 kernel/task_work.c:228 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3bc9aeed89 Code: Unable to access opcode bytes at 0x7f3bc9aeed5f. RSP: 002b:00007fffe69f4fd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f3bc9aeed89 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007f3bc9b6f390 R08: ffffffffffffffb8 R09: 0000000000004469 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3bc9b6f390 R13: 0000000000000000 R14: 00007f3bc9b70100 R15: 00007f3bc9abd060 </TASK> ocfs2: Unmounting device (7,0) on (node local) Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 UID: 0 PID: 5091 Comm: syz-executor302 Not tainted 6.12.0-rc3-syzkaller-00319-gb04ae0f45168 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:ocfs2_clear_inode fs/ocfs2/inode.c:1208 [inline] RIP: 0010:ocfs2_evict_inode+0xdd3/0x4680 fs/ocfs2/inode.c:1220 Code: 00 00 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 e7 e8 bf 77 71 fe 4c 01 f3 4d 8b 24 24 49 83 c4 08 4c 89 e0 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 e7 e8 9e 77 71 fe 49 8b 3c 24 49 81 c7 RSP: 0018:ffffc9000af67180 EFLAGS: 00010202 RAX: 0000000000000001 RBX: fffff520015ece44 RCX: ffff888000bfc880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000af678d0 R08: ffffffff838d258e R09: 1ffff11008c13616 R10: dffffc0000000000 R11: ffffed1008c13617 R12: 0000000000000008 R13: 1ffff11008c13644 R14: dffffc0000000000 R15: ffff88804609b338 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3bc9b39378 CR3: 0000000011c58000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> evict+0x4e8/0x9b0 fs/inode.c:725 __ocfs2_free_slot_info fs/ocfs2/slot_map.c:307 [inline] ocfs2_free_slot_info+0x94/0x270 fs/ocfs2/slot_map.c:443 ocfs2_delete_osb+0x58/0x180 fs/ocfs2/super.c:2497 ocfs2_dismount_volume+0x594/0x8f0 fs/ocfs2/super.c:1936 generic_shutdown_super+0x139/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1696 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x24f/0x310 kernel/task_work.c:228 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xa2f/0x28e0 kernel/exit.c:939 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3bc9aeed89 Code: Unable to access opcode bytes at 0x7f3bc9aeed5f. RSP: 002b:00007fffe69f4fd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f3bc9aeed89 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 RBP: 00007f3bc9b6f390 R08: ffffffffffffffb8 R09: 0000000000004469 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3bc9b6f390 R13: 0000000000000000 R14: 00007f3bc9b70100 R15: 00007f3bc9abd060 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_clear_inode fs/ocfs2/inode.c:1208 [inline] RIP: 0010:ocfs2_evict_inode+0xdd3/0x4680 fs/ocfs2/inode.c:1220 Code: 00 00 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 e7 e8 bf 77 71 fe 4c 01 f3 4d 8b 24 24 49 83 c4 08 4c 89 e0 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 e7 e8 9e 77 71 fe 49 8b 3c 24 49 81 c7 RSP: 0018:ffffc9000af67180 EFLAGS: 00010202 RAX: 0000000000000001 RBX: fffff520015ece44 RCX: ffff888000bfc880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000af678d0 R08: ffffffff838d258e R09: 1ffff11008c13616 R10: dffffc0000000000 R11: ffffed1008c13617 R12: 0000000000000008 R13: 1ffff11008c13644 R14: dffffc0000000000 R15: ffff88804609b338 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3bc9b39378 CR3: 0000000011c58000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 4c 89 e0 mov %r12,%rax 5: 48 c1 e8 03 shr $0x3,%rax 9: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) e: 74 08 je 0x18 10: 4c 89 e7 mov %r12,%rdi 13: e8 bf 77 71 fe call 0xfe7177d7 18: 4c 01 f3 add %r14,%rbx 1b: 4d 8b 24 24 mov (%r12),%r12 1f: 49 83 c4 08 add $0x8,%r12 23: 4c 89 e0 mov %r12,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 e7 mov %r12,%rdi 34: e8 9e 77 71 fe call 0xfe7177d7 39: 49 8b 3c 24 mov (%r12),%rdi 3d: 49 rex.WB 3e: 81 .byte 0x81 3f: c7 .byte 0xc7 --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.
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