(syz.0.0,5325,0):__ocfs2_journal_access:728 ERROR: Error -30 getting 1 access to buffer! (syz.0.0,5325,0):ocfs2_write_end_nolock:1945 ERROR: status = -30 (syz.0.0,5325,0):ocfs2_commit_trans:401 ERROR: status = -5 ------------[ cut here ]------------ kernel BUG at fs/ocfs2/mmap.c:106! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__ocfs2_page_mkwrite fs/ocfs2/mmap.c:106 [inline] RIP: 0010:ocfs2_page_mkwrite+0xb5e/0xb60 fs/ocfs2/mmap.c:143 Code: 06 48 fe e9 27 fd ff ff e8 4f 8a f7 07 e8 5a 56 d6 fd 4c 89 e7 48 c7 c6 a0 4d 56 8c e8 4b 58 36 fd 90 0f 0b e8 43 56 d6 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa RSP: 0018:ffffc9000d7a6f80 EFLAGS: 00010287 RAX: ffffffff83f1ca1d RBX: 00000000ffffffe2 RCX: 0000000000100000 RDX: ffffc9000f451000 RSI: 0000000000025bea RDI: 0000000000025beb RBP: ffffc9000d7a7108 R08: ffffffff907a897f R09: 1ffffffff20f512f R10: dffffc0000000000 R11: fffffbfff20f5130 R12: dffffc0000000000 R13: 0000000000068000 R14: 0000000000000000 R15: 0000000000001000 FS: 00007f6b666906c0(0000) GS:ffff88808c2bb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000068000 CR3: 000000001f520000 CR4: 0000000000352ef0 Call Trace: do_page_mkwrite+0x147/0x310 mm/memory.c:3816 wp_page_shared mm/memory.c:4217 [inline] do_wp_page+0x1a9c/0x4b80 mm/memory.c:4440 handle_pte_fault mm/memory.c:6582 [inline] __handle_mm_fault mm/memory.c:6707 [inline] handle_mm_fault+0x15d7/0x3750 mm/memory.c:6876 do_user_addr_fault+0x746/0x1340 arch/x86/mm/fault.c:1394 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0010:rep_movs_alternative+0x4a/0xa0 arch/x86/lib/copy_user_64.S:74 Code: 67 04 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 a4 e9 cf 67 04 00 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 RSP: 0018:ffffc9000d7a76d8 EFLAGS: 00050206 RAX: ffffffff84ded101 RBX: ffff888053906000 RCX: 0000000000000400 RDX: 0000000000000000 RSI: ffff888053906c00 RDI: 0000200000068000 RBP: ffffc9000d7a7848 R08: ffff888053906fff R09: 1ffff1100a720dff R10: dffffc0000000000 R11: ffffed100a720e00 R12: 1ffff92001af4faf R13: 0000200000067400 R14: ffffc9000d7a7d88 R15: 0000000000001000 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline] copy_to_user_iter lib/iov_iter.c:25 [inline] iterate_ubuf include/linux/iov_iter.h:30 [inline] iterate_and_advance2 include/linux/iov_iter.h:302 [inline] iterate_and_advance include/linux/iov_iter.h:330 [inline] _copy_to_iter+0x255/0x1810 lib/iov_iter.c:197 copy_page_to_iter+0x23f/0x330 lib/iov_iter.c:374 copy_folio_to_iter include/linux/uio.h:204 [inline] filemap_read+0xa19/0x11e0 mm/filemap.c:2875 ocfs2_file_read_iter+0x3fc/0xae0 fs/ocfs2/file.c:2601 new_sync_read fs/read_write.c:493 [inline] vfs_read+0x595/0xa80 fs/read_write.c:574 ksys_read+0x150/0x270 fs/read_write.c:716 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6b6579e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6b6668ffe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f6b65a26090 RCX: 00007f6b6579e159 RDX: 00000000fffffeb1 RSI: 0000200000000400 RDI: 0000000000000007 RBP: 00007f6b6583506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6b65a26128 R14: 00007f6b65a26090 R15: 00007ffd78841d18 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__ocfs2_page_mkwrite fs/ocfs2/mmap.c:106 [inline] RIP: 0010:ocfs2_page_mkwrite+0xb5e/0xb60 fs/ocfs2/mmap.c:143 Code: 06 48 fe e9 27 fd ff ff e8 4f 8a f7 07 e8 5a 56 d6 fd 4c 89 e7 48 c7 c6 a0 4d 56 8c e8 4b 58 36 fd 90 0f 0b e8 43 56 d6 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa RSP: 0018:ffffc9000d7a6f80 EFLAGS: 00010287 RAX: ffffffff83f1ca1d RBX: 00000000ffffffe2 RCX: 0000000000100000 RDX: ffffc9000f451000 RSI: 0000000000025bea RDI: 0000000000025beb RBP: ffffc9000d7a7108 R08: ffffffff907a897f R09: 1ffffffff20f512f R10: dffffc0000000000 R11: fffffbfff20f5130 R12: dffffc0000000000 R13: 0000000000068000 R14: 0000000000000000 R15: 0000000000001000 FS: 00007f6b666906c0(0000) GS:ffff88808c2bb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000068000 CR3: 000000001f520000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 67 04 00 addr32 add $0x0,%al 3: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) a: 00 00 00 d: 0f 1f 00 nopl (%rax) 10: 48 8b 06 mov (%rsi),%rax 13: 48 89 07 mov %rax,(%rdi) 16: 48 83 c6 08 add $0x8,%rsi 1a: 48 83 c7 08 add $0x8,%rdi 1e: 83 e9 08 sub $0x8,%ecx 21: 74 db je 0xfffffffe 23: 83 f9 08 cmp $0x8,%ecx 26: 73 e8 jae 0x10 28: eb c5 jmp 0xffffffef * 2a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction 2c: e9 cf 67 04 00 jmp 0x46800 31: 48 8b 06 mov (%rsi),%rax 34: 48 89 07 mov %rax,(%rdi) 37: 48 8d 47 08 lea 0x8(%rdi),%rax 3b: 48 83 e0 f8 and $0xfffffffffffffff8,%rax 3f: 48 rex.W