(syz.0.0,5323,0):__ocfs2_journal_access:705 ERROR: Error -30 getting 1 access to buffer! (syz.0.0,5323,0):ocfs2_write_end_nolock:1942 ERROR: status = -30 (syz.0.0,5323,0):ocfs2_commit_trans:382 ERROR: status = -5 ------------[ cut here ]------------ kernel BUG at fs/ocfs2/mmap.c:107! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00404-g8560697b23dc #0 PREEMPT(full) 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_page_mkwrite fs/ocfs2/mmap.c:107 [inline] RIP: 0010:ocfs2_page_mkwrite+0xda1/0xdb0 fs/ocfs2/mmap.c:144 Code: ff df 4d 89 fc e9 85 f3 ff ff 48 ff cb e8 d7 32 f9 fd 49 89 dc 49 be 00 00 00 00 00 fc ff df e9 6b f3 ff ff e8 c0 32 f9 fd 90 <0f> 0b cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d37e8e0 EFLAGS: 00010287 RAX: ffffffff83c98940 RBX: 00000000ffffffe2 RCX: 0000000000100000 RDX: ffffc9000e8db000 RSI: 000000000006cd87 RDI: 000000000006cd88 RBP: ffffc9000d37eaa0 R08: ffffffff83c98732 R09: 1ffffffff20bfc8e R10: dffffc0000000000 R11: fffffbfff20bfc8f R12: 0000000000001000 R13: 00000000001e0000 R14: ffffea000002cc40 R15: 0000000000000000 FS: 00007f12c58b76c0(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000001e0000 CR3: 000000004161e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_page_mkwrite+0x159/0x340 mm/memory.c:3287 wp_page_shared mm/memory.c:3688 [inline] do_wp_page+0x2bbc/0x5e00 mm/memory.c:3907 handle_pte_fault+0xfaf/0x61c0 mm/memory.c:6013 __handle_mm_fault mm/memory.c:6140 [inline] handle_mm_fault+0x1129/0x1bf0 mm/memory.c:6309 do_user_addr_fault arch/x86/mm/fault.c:1388 [inline] handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x2bb/0x920 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:rep_movs_alternative+0x4a/0x90 arch/x86/lib/copy_user_64.S:74 Code: cc cc cc 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 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 RSP: 0018:ffffc9000d37f418 EFLAGS: 00050206 RAX: ffffffff85017c01 RBX: 00002000001dd8cf RCX: 0000000000000080 RDX: 0000000000000000 RSI: ffff8880537eff80 RDI: 00002000001e0000 RBP: ffffc9000d37f590 R08: ffff8880537effff R09: 1ffff1100a6fdfff R10: dffffc0000000000 R11: ffffed100a6fe000 R12: 1ffff92001a6ffbb R13: ffffc9000d37fdd8 R14: 00000000000027b1 R15: ffff8880537ed84f 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:300 [inline] iterate_and_advance include/linux/iov_iter.h:328 [inline] _copy_to_iter+0x268/0x1c90 lib/iov_iter.c:185 copy_to_iter include/linux/uio.h:220 [inline] simple_copy_to_iter net/core/datagram.c:524 [inline] __skb_datagram_iter+0x3d2/0x940 net/core/datagram.c:434 skb_copy_datagram_iter+0xd1/0x250 net/core/datagram.c:538 skb_copy_datagram_msg include/linux/skbuff.h:4128 [inline] tcp_recvmsg_locked+0xf84/0x3ba0 net/ipv4/tcp.c:2773 tcp_recvmsg+0x222/0x8c0 net/ipv4/tcp.c:2878 inet_recvmsg+0x152/0x2d0 net/ipv4/af_inet.c:883 sock_recvmsg_nosec net/socket.c:1017 [inline] sock_recvmsg+0x1ae/0x280 net/socket.c:1039 __sys_recvfrom+0x204/0x380 net/socket.c:2230 __do_sys_recvfrom net/socket.c:2245 [inline] __se_sys_recvfrom net/socket.c:2241 [inline] __x64_sys_recvfrom+0xde/0x100 net/socket.c:2241 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f12c498e169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f12c58b7038 EFLAGS: 00000246 ORIG_RAX: 000000000000002d RAX: ffffffffffffffda RBX: 00007f12c4bb6080 RCX: 00007f12c498e169 RDX: fffffffffffffd0b RSI: 0000200000000080 RDI: 0000000000000004 RBP: 00007f12c4a10a68 R08: 0000000000000000 R09: fffffffffffffd25 R10: 0000000000000700 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f12c4bb6080 R15: 00007ffdf06c4408 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__ocfs2_page_mkwrite fs/ocfs2/mmap.c:107 [inline] RIP: 0010:ocfs2_page_mkwrite+0xda1/0xdb0 fs/ocfs2/mmap.c:144 Code: ff df 4d 89 fc e9 85 f3 ff ff 48 ff cb e8 d7 32 f9 fd 49 89 dc 49 be 00 00 00 00 00 fc ff df e9 6b f3 ff ff e8 c0 32 f9 fd 90 <0f> 0b cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d37e8e0 EFLAGS: 00010287 RAX: ffffffff83c98940 RBX: 00000000ffffffe2 RCX: 0000000000100000 RDX: ffffc9000e8db000 RSI: 000000000006cd87 RDI: 000000000006cd88 RBP: ffffc9000d37eaa0 R08: ffffffff83c98732 R09: 1ffffffff20bfc8e R10: dffffc0000000000 R11: fffffbfff20bfc8f R12: 0000000000001000 R13: 00000000001e0000 R14: ffffea000002cc40 R15: 0000000000000000 FS: 00007f12c58b76c0(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000100 CR3: 000000004161e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: cc int3 1: cc int3 2: cc int3 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: c3 ret 2d: cc int3 2e: cc int3 2f: cc int3 30: cc int3 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