Title | Replies (including bot) | Last reply |
---|---|---|
[syzbot] [nilfs?] kernel BUG in __block_write_begin_int (2) | 1 (2) | 2024/05/04 18:26 |
[syzbot] [nilfs?] KASAN: use-after-free Read in nilfs_set_link | 2 (4) | 2024/02/19 12:13 |
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Title | Replies (including bot) | Last reply |
---|---|---|
[syzbot] [nilfs?] kernel BUG in __block_write_begin_int (2) | 1 (2) | 2024/05/04 18:26 |
[syzbot] [nilfs?] KASAN: use-after-free Read in nilfs_set_link | 2 (4) | 2024/02/19 12:13 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
linux-5.15 | KASAN: use-after-free Read in nilfs_set_link | C | done | 1 | 145d | 145d | 3/3 | fixed on 2024/08/28 13:04 | |
linux-6.1 | KASAN: use-after-free Read in nilfs_set_link | 1 | 145d | 145d | 0/3 | auto-obsoleted due to no activity on 2024/10/26 08:47 |
================================================================== BUG: KASAN: use-after-free in nilfs_set_link+0x41d/0x4e0 fs/nilfs2/dir.c:421 Read of size 2 at addr ffff88802f5f1008 by task syz-executor284/5167 CPU: 1 PID: 5167 Comm: syz-executor284 Not tainted 6.7.0-rc8-syzkaller-00177-g52b1853b080a #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 nilfs_set_link+0x41d/0x4e0 fs/nilfs2/dir.c:421 nilfs_rename+0x4b7/0x580 fs/nilfs2/namei.c:414 vfs_rename+0x13e0/0x1c30 fs/namei.c:4844 do_renameat2+0xc3c/0xdc0 fs/namei.c:4996 __do_sys_rename fs/namei.c:5042 [inline] __se_sys_rename fs/namei.c:5040 [inline] __x64_sys_rename+0x81/0xa0 fs/namei.c:5040 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f872e83da09 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 1a 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffddec67608 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007ffddec676d0 RCX: 00007f872e83da09 RDX: 00007f872e83da09 RSI: 0000000020000040 RDI: 0000000020000180 RBP: 00007ffddec676d8 R08: 00007f872e87f0cc R09: 00007f872e87f0cc R10: 0000000000000f69 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f872e87f0e5 R14: 0000000000000001 R15: 0000000000000001 </TASK> The buggy address belongs to the physical page: page:ffffea0000bd7c40 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x2f5f1 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea0001ae2f08 ffffe8fefd701770 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 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 5157, tgid 5157 (sshd), ts 43507147971, free_ts 43528176065 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d0/0x350 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1544 [inline] get_page_from_freelist+0xa25/0x36d0 mm/page_alloc.c:3312 __alloc_pages+0x22e/0x2420 mm/page_alloc.c:4568 alloc_pages_mpol+0x258/0x5f0 mm/mempolicy.c:2133 vma_alloc_folio+0xad/0x220 mm/mempolicy.c:2172 do_anonymous_page mm/memory.c:4172 [inline] do_pte_missing mm/memory.c:3729 [inline] handle_pte_fault mm/memory.c:5039 [inline] __handle_mm_fault+0xe07/0x3d70 mm/memory.c:5180 handle_mm_fault+0x47a/0xa10 mm/memory.c:5345 do_user_addr_fault+0x30b/0x1030 arch/x86/mm/fault.c:1364 handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x5d/0xc0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare+0x4fa/0xaa0 mm/page_alloc.c:2347 free_unref_page_list+0xe6/0xb40 mm/page_alloc.c:2533 release_pages+0x32a/0x14f0 mm/swap.c:1042 tlb_batch_pages_flush+0x9a/0x190 mm/mmu_gather.c:98 tlb_flush_mmu_free mm/mmu_gather.c:293 [inline] tlb_flush_mmu mm/mmu_gather.c:300 [inline] tlb_finish_mmu+0x14b/0x6f0 mm/mmu_gather.c:392 unmap_region.constprop.0+0x2e6/0x3b0 mm/mmap.c:2344 do_vmi_align_munmap+0xde6/0x1600 mm/mmap.c:2660 do_vmi_munmap+0x20e/0x450 mm/mmap.c:2728 __vm_munmap+0x144/0x390 mm/mmap.c:3015 __do_sys_munmap mm/mmap.c:3032 [inline] __se_sys_munmap mm/mmap.c:3029 [inline] __x64_sys_munmap+0x62/0x80 mm/mmap.c:3029 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Memory state around the buggy address: ffff88802f5f0f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802f5f0f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88802f5f1000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88802f5f1080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88802f5f1100: 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/01/07 20:10 | upstream | 52b1853b080a | d0304e9c | .config | console log | report | syz | C | [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] | ci-qemu-upstream | KASAN: use-after-free Read in nilfs_set_link | |
2024/01/07 20:37 | upstream | 52b1853b080a | d0304e9c | .config | console log | report | syz | C | [disk image] [vmlinux] [kernel image] [mounted in repro] | ci2-upstream-fs | KASAN: out-of-bounds Read in nilfs_set_link | |
2024/01/07 19:59 | upstream | 52b1853b080a | d0304e9c | .config | console log | report | info | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-qemu-upstream | KASAN: use-after-free Read in nilfs_set_link |