syzbot |
sign-in | mailing list | source | docs |
loop4: detected capacity change from 0 to 32768 ================================================================== BUG: KASAN: slab-out-of-bounds in reiserfs_xattr_get+0xe0/0x9d0 fs/reiserfs/xattr.c:681 Read of size 8 at addr ffff88805ab9bd98 by task syz.4.7062/20348 CPU: 1 PID: 20348 Comm: syz.4.7062 Not tainted 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 reiserfs_xattr_get+0xe0/0x9d0 fs/reiserfs/xattr.c:681 reiserfs_get_acl+0x7a/0x650 fs/reiserfs/xattr_acl.c:214 get_acl+0x14e/0x250 fs/posix_acl.c:153 check_acl+0x3a/0x150 fs/namei.c:307 acl_permission_check fs/namei.c:352 [inline] generic_permission+0x396/0x4f0 fs/namei.c:405 do_inode_permission fs/namei.c:459 [inline] inode_permission+0x22f/0x450 fs/namei.c:526 may_open+0x29e/0x400 fs/namei.c:3232 do_open fs/namei.c:3606 [inline] path_openat+0x25a2/0x2f20 fs/namei.c:3742 do_filp_open+0x21c/0x460 fs/namei.c:3769 do_sys_openat2+0x13b/0x4f0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1280 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fba49bc7ad0 Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 49 94 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 9c 94 02 00 8b 44 RSP: 002b:00007fba47a30df0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000010000 RCX: 00007fba49bc7ad0 RDX: 0000000000010000 RSI: 0000200000005d80 RDI: 00000000ffffff9c RBP: 0000200000005d80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000200000005d80 R13: 00007fba47a30eb0 R14: 0000000000005d0c R15: 0000200000005dc0 </TASK> Allocated by task 20343: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] kmem_cache_alloc_trace+0x143/0x290 mm/slub.c:3247 kmalloc include/linux/slab.h:604 [inline] kzalloc include/linux/slab.h:735 [inline] set_kthread_struct kernel/kthread.c:103 [inline] kthread+0x10a/0x4f0 kernel/kthread.c:296 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Freed by task 14: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0xf1/0x270 mm/slub.c:4559 free_task+0xd9/0x150 kernel/fork.c:473 rcu_do_batch kernel/rcu/tree.c:2523 [inline] rcu_core+0xa15/0x1650 kernel/rcu/tree.c:2763 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 run_ksoftirqd+0xc6/0x120 kernel/softirq.c:925 smpboot_thread_fn+0x51b/0x9d0 kernel/smpboot.c:164 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 The buggy address belongs to the object at ffff88805ab9bc00 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 152 bytes to the right of 256-byte region [ffff88805ab9bc00, ffff88805ab9bd00) The buggy address belongs to the page: page:ffffea00016ae680 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5ab9a head:ffffea00016ae680 order:1 compound_mapcount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea00007e3280 0000000700000007 ffff888017441b40 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 18805, ts 664337942282, free_ts 634123321593 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5466 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] __kmalloc_track_caller+0x1c7/0x300 mm/slub.c:4925 copy_array kernel/bpf/verifier.c:778 [inline] copy_stack_state kernel/bpf/verifier.c:829 [inline] copy_func_state kernel/bpf/verifier.c:950 [inline] copy_verifier_state+0x840/0xc80 kernel/bpf/verifier.c:986 push_stack+0x19d/0x4f0 kernel/bpf/verifier.c:1057 check_cond_jmp_op kernel/bpf/verifier.c:9341 [inline] do_check+0xceb7/0xf310 kernel/bpf/verifier.c:11472 do_check_common+0x844/0x1070 kernel/bpf/verifier.c:13485 do_check_main kernel/bpf/verifier.c:13548 [inline] bpf_check+0xcb96/0x12d40 kernel/bpf/verifier.c:14119 bpf_prog_load+0x12b3/0x1b60 kernel/bpf/syscall.c:2345 __sys_bpf+0x343/0x670 kernel/bpf/syscall.c:4648 __do_sys_bpf kernel/bpf/syscall.c:4752 [inline] __se_sys_bpf kernel/bpf/syscall.c:4750 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4750 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page_list+0x1f7/0x8e0 mm/page_alloc.c:3433 release_pages+0x1bb9/0x1f40 mm/swap.c:963 __pagevec_release+0x80/0xf0 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x48b/0x1290 mm/truncate.c:329 gfs2_find_jhead+0xfa8/0x10c0 fs/gfs2/lops.c:605 check_journal_clean+0x18d/0x350 fs/gfs2/util.c:75 init_journal+0x1830/0x23c0 fs/gfs2/ops_fstype.c:832 init_inodes+0xdc/0x310 fs/gfs2/ops_fstype.c:891 gfs2_fill_super+0x1c2c/0x2750 fs/gfs2/ops_fstype.c:1249 get_tree_bdev+0x3fe/0x620 fs/super.c:1325 gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1332 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x2ba/0xb40 fs/namespace.c:3012 do_mount fs/namespace.c:3355 [inline] __do_sys_mount fs/namespace.c:3563 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 Memory state around the buggy address: ffff88805ab9bc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805ab9bd00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88805ab9bd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88805ab9be00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88805ab9be80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/04/15 22:48 | linux-5.15.y | f7347f400572 | a95239b1 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | KASAN: slab-out-of-bounds Read in reiserfs_xattr_get | ||
2025/02/20 03:49 | linux-5.15.y | c16c81c81336 | 50668798 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | KASAN: slab-out-of-bounds Read in reiserfs_xattr_get | ||
2025/02/01 18:45 | linux-5.15.y | c16c81c81336 | aa47157c | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan-arm64 | KASAN: slab-out-of-bounds Read in reiserfs_xattr_get |