dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 fail_dump lib/fault-inject.c:73 [inline] should_fail_ex+0x414/0x560 lib/fault-inject.c:174 should_failslab+0xa8/0x100 mm/failslab.c:46 slab_pre_alloc_hook mm/slub.c:4100 [inline] slab_alloc_node mm/slub.c:4176 [inline] __do_kmalloc_node mm/slub.c:4326 [inline] __kmalloc_node_noprof+0xd1/0x4e0 mm/slub.c:4333 kmalloc_array_node_noprof include/linux/slab.h:1020 [inline] alloc_slab_obj_exts+0x39/0xa0 mm/slub.c:1992 __memcg_slab_post_alloc_hook+0x332/0x820 mm/memcontrol.c:3074 memcg_slab_post_alloc_hook mm/slub.c:2179 [inline] slab_post_alloc_hook mm/slub.c:4157 [inline] slab_alloc_node mm/slub.c:4196 [inline] kmem_cache_alloc_noprof+0x2bf/0x3c0 mm/slub.c:4203 alloc_buffer_head+0x2a/0x270 fs/buffer.c:3030 folio_alloc_buffers+0x32d/0x640 fs/buffer.c:937 create_empty_buffers+0x3a/0x530 fs/buffer.c:1695 ocfs2_map_folio_blocks+0x11f/0xc40 fs/ocfs2/aops.c:584 ocfs2_prepare_folio_for_write fs/ocfs2/aops.c:-1 [inline] ocfs2_write_cluster fs/ocfs2/aops.c:1173 [inline] ocfs2_write_cluster_by_desc+0xc71/0x1c90 fs/ocfs2/aops.c:1218 ocfs2_write_begin_nolock+0x31a3/0x4340 fs/ocfs2/aops.c:1795 __ocfs2_page_mkwrite fs/ocfs2/mmap.c:93 [inline] ocfs2_page_mkwrite+0x600/0xc40 fs/ocfs2/mmap.c:144 do_page_mkwrite+0x14a/0x310 mm/memory.c:3287 do_shared_fault mm/memory.c:5594 [inline] do_fault mm/memory.c:5656 [inline] do_pte_missing mm/memory.c:4160 [inline] handle_pte_fault mm/memory.c:5997 [inline] __handle_mm_fault+0x18d2/0x5380 mm/memory.c:6140 handle_mm_fault+0x3f6/0x8c0 mm/memory.c:6309 do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1388 handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x68/0x110 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 e9 7f f2 03 00 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 RSP: 0018:ffffc9000d37f718 EFLAGS: 00050206 RAX: ffffffff84b68601 RBX: ffff88804cf77000 RCX: 0000000000000400 RDX: 0000000000000000 RSI: ffff88804cf77c00 RDI: 0000200000002000 RBP: ffffc9000d37f878 R08: ffff88804cf77fff R09: 1ffff110099eefff R10: dffffc0000000000 R11: ffffed10099ef000 R12: 1ffff92001a6ffb3 R13: 0000200000001400 R14: ffffc9000d37fda8 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:300 [inline] iterate_and_advance include/linux/iov_iter.h:328 [inline] _copy_to_iter+0x24c/0x15a0 lib/iov_iter.c:185 copy_page_to_iter+0xa7/0x150 lib/iov_iter.c:362 copy_folio_to_iter include/linux/uio.h:198 [inline] filemap_read+0xe46/0x11d0 mm/filemap.c:2753 ocfs2_file_read_iter+0x3fa/0xa80 fs/ocfs2/file.c:2589 new_sync_read fs/read_write.c:489 [inline] vfs_read+0x4cd/0x980 fs/read_write.c:570 ksys_read+0x145/0x250 fs/read_write.c:713 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcbb678e969 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:00007fcbb7576038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fcbb69b5fa0 RCX: 00007fcbb678e969 RDX: 0000000000002020 RSI: 0000200000000400 RDI: 0000000000000006 RBP: 00007fcbb7576090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007fcbb69b5fa0 R15: 00007ffc027b17b8 (syz.0.0,5375,0):__ocfs2_journal_access:727 ERROR: Error -30 getting 1 access to buffer! (syz.0.0,5375,0):ocfs2_write_end_nolock:1942 ERROR: status = -30 (syz.0.0,5375,0):ocfs2_commit_trans:404 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: 5375 Comm: syz.0.0 Not tainted 6.15.0-rc7-syzkaller-00082-g5cdb2c77c4c3 #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+0xc32/0xc40 fs/ocfs2/mmap.c:144 Code: 07 e8 82 a4 23 fe eb 0d 48 ff cb e8 78 a4 23 fe 48 89 5c 24 08 49 be 00 00 00 00 00 fc ff df e9 d0 f4 ff ff e8 5f a4 23 fe 90 <0f> 0b cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d37f0e0 EFLAGS: 00010293 RAX: ffffffff839c4d71 RBX: 00000000ffffffe2 RCX: ffff88801f292440 RDX: 0000000000000000 RSI: 0000000000001000 RDI: 00000000ffffffe2 RBP: ffffc9000d37f280 R08: ffffffff8f7f3277 R09: 1ffffffff1efe64e R10: dffffc0000000000 R11: fffffbfff1efe64f R12: ffffea000133dd80 R13: 0000000000000100 R14: 0000000000000000 R15: 0000000000001000 FS: 00007fcbb75766c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000003efe1000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_page_mkwrite+0x14a/0x310 mm/memory.c:3287 do_shared_fault mm/memory.c:5594 [inline] do_fault mm/memory.c:5656 [inline] do_pte_missing mm/memory.c:4160 [inline] handle_pte_fault mm/memory.c:5997 [inline] __handle_mm_fault+0x18d2/0x5380 mm/memory.c:6140 handle_mm_fault+0x3f6/0x8c0 mm/memory.c:6309 do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1388 handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x68/0x110 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 e9 7f f2 03 00 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 RSP: 0018:ffffc9000d37f718 EFLAGS: 00050206 RAX: ffffffff84b68601 RBX: ffff88804cf77000 RCX: 0000000000000400 RDX: 0000000000000000 RSI: ffff88804cf77c00 RDI: 0000200000002000 RBP: ffffc9000d37f878 R08: ffff88804cf77fff R09: 1ffff110099eefff R10: dffffc0000000000 R11: ffffed10099ef000 R12: 1ffff92001a6ffb3 R13: 0000200000001400 R14: ffffc9000d37fda8 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:300 [inline] iterate_and_advance include/linux/iov_iter.h:328 [inline] _copy_to_iter+0x24c/0x15a0 lib/iov_iter.c:185 copy_page_to_iter+0xa7/0x150 lib/iov_iter.c:362 copy_folio_to_iter include/linux/uio.h:198 [inline] filemap_read+0xe46/0x11d0 mm/filemap.c:2753 ocfs2_file_read_iter+0x3fa/0xa80 fs/ocfs2/file.c:2589 new_sync_read fs/read_write.c:489 [inline] vfs_read+0x4cd/0x980 fs/read_write.c:570 ksys_read+0x145/0x250 fs/read_write.c:713 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcbb678e969 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:00007fcbb7576038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fcbb69b5fa0 RCX: 00007fcbb678e969 RDX: 0000000000002020 RSI: 0000200000000400 RDI: 0000000000000006 RBP: 00007fcbb7576090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007fcbb69b5fa0 R15: 00007ffc027b17b8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__ocfs2_page_mkwrite fs/ocfs2/mmap.c:107 [inline] RIP: 0010:ocfs2_page_mkwrite+0xc32/0xc40 fs/ocfs2/mmap.c:144 Code: 07 e8 82 a4 23 fe eb 0d 48 ff cb e8 78 a4 23 fe 48 89 5c 24 08 49 be 00 00 00 00 00 fc ff df e9 d0 f4 ff ff e8 5f a4 23 fe 90 <0f> 0b cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d37f0e0 EFLAGS: 00010293 RAX: ffffffff839c4d71 RBX: 00000000ffffffe2 RCX: ffff88801f292440 RDX: 0000000000000000 RSI: 0000000000001000 RDI: 00000000ffffffe2 RBP: ffffc9000d37f280 R08: ffffffff8f7f3277 R09: 1ffffffff1efe64e R10: dffffc0000000000 R11: fffffbfff1efe64f R12: ffffea000133dd80 R13: 0000000000000100 R14: 0000000000000000 R15: 0000000000001000 FS: 00007fcbb75766c0(0000) GS:ffff88808d6c2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000003efe1000 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: e9 7f f2 03 00 jmp 0x3f2b0 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