Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2024/10/26 | upstream (ToT) | 850925a8133c | C | [report] KASAN: use-after-free Write in inode2sd |
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Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2024/10/26 | upstream (ToT) | 850925a8133c | C | [report] KASAN: use-after-free Write in inode2sd |
Created | Duration | User | Patch | Repo | Result |
---|---|---|---|---|---|
2024/11/08 13:13 | 14m | retest repro | linux-5.15.y | report log |
================================================================== BUG: KASAN: use-after-free in inode2sd+0x64e/0xa20 fs/reiserfs/inode.c:1378 Write of size 2 at addr ffff88806b761520 by task syz-executor170/7438 CPU: 1 PID: 7438 Comm: syz-executor170 Not tainted 5.15.168-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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 inode2sd+0x64e/0xa20 fs/reiserfs/inode.c:1378 update_stat_data fs/reiserfs/inode.c:1439 [inline] reiserfs_update_sd_size+0xa70/0x10b0 fs/reiserfs/inode.c:1505 reiserfs_update_sd fs/reiserfs/reiserfs.h:3099 [inline] reiserfs_do_truncate+0xf8b/0x15b0 fs/reiserfs/stree.c:2036 reiserfs_truncate_file+0x638/0xda0 fs/reiserfs/inode.c:2318 reiserfs_setattr+0xa4d/0xf90 fs/reiserfs/inode.c:3409 notify_change+0xc6d/0xf50 fs/attr.c:505 do_truncate+0x21c/0x300 fs/open.c:65 handle_truncate fs/namei.c:3265 [inline] do_open fs/namei.c:3612 [inline] path_openat+0x28a3/0x2f20 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_creat fs/open.c:1343 [inline] __se_sys_creat fs/open.c:1337 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1337 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: 0033:0x7fd11caf1a99 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 1b 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd11caa5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fd11cb736c8 RCX: 00007fd11caf1a99 RDX: 00007fd11caf1a99 RSI: 0000000000000000 RDI: 0000000020000940 RBP: 00007fd11cb736c0 R08: 00007fd11caa56c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd11cb736cc R13: 0000000000000006 R14: 00007ffca294f820 R15: 00007ffca294f908 </TASK> The buggy address belongs to the page: page:ffffea0001add840 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x6b761 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 ffffea0001b2a9c8 ffffea0001b46c48 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 0, migratetype Movable, gfp_mask 0x1100cca(GFP_HIGHUSER_MOVABLE), pid 7435, ts 643387760282, free_ts 643413147242 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159 __alloc_pages+0x272/0x700 mm/page_alloc.c:5423 alloc_pages_vma+0x39a/0x800 mm/mempolicy.c:2146 shmem_alloc_page mm/shmem.c:1586 [inline] shmem_alloc_and_acct_page+0x4d1/0xd10 mm/shmem.c:1611 shmem_getpage_gfp+0x17b1/0x3190 mm/shmem.c:1906 shmem_getpage mm/shmem.c:151 [inline] shmem_write_begin+0xce/0x1a0 mm/shmem.c:2477 generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3785 __generic_file_write_iter+0x243/0x4f0 mm/filemap.c:3912 generic_file_write_iter+0xa7/0x1b0 mm/filemap.c:3944 call_write_iter include/linux/fs.h:2174 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0xacd/0xe50 fs/read_write.c:594 ksys_write+0x1a2/0x2c0 fs/read_write.c:647 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] shmem_undo_range+0x67a/0x1b50 mm/shmem.c:964 shmem_truncate_range mm/shmem.c:1063 [inline] shmem_evict_inode+0x21b/0xa00 mm/shmem.c:1145 evict+0x529/0x930 fs/inode.c:622 __dentry_kill+0x436/0x650 fs/dcache.c:586 dentry_kill+0xbb/0x290 dput+0xd8/0x1a0 fs/dcache.c:893 __fput+0x636/0x8e0 fs/file_table.c:288 task_work_run+0x129/0x1a0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 Memory state around the buggy address: ffff88806b761400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88806b761480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88806b761500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88806b761580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88806b761600: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/10/21 11:36 | linux-5.15.y | 584a40a22cb9 | cd6fc0a3 | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] | ci2-linux-5-15-kasan | KASAN: use-after-free Write in inode2sd |