syzbot


KASAN: use-after-free Write in txEnd

Status: upstream: reported C repro on 2024/03/11 13:53
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+0bdc64c8a689c0104ca8@syzkaller.appspotmail.com
First crash: 275d, last: 3h44m
Bug presence (1)
Date Name Commit Repro Result
2024/04/29 upstream (ToT) e67572cd2204 C [report] general protection fault in lmLogSync
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 KASAN: use-after-free Write in txEnd origin:upstream C 173 20h22m 302d 0/3 upstream: reported C repro on 2024/02/14 01:53
upstream general protection fault in txEnd jfs C error 798 7h38m 719d 0/28 upstream: reported C repro on 2022/12/23 23:37
linux-4.14 general protection fault in txEnd jfs fat C 1 649d 716d 0/1 upstream: reported C repro on 2022/12/27 07:15

Sample crash report:
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_write include/linux/instrumented.h:87 [inline]
BUG: KASAN: use-after-free in clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline]
BUG: KASAN: use-after-free in txEnd+0x350/0x560 fs/jfs/jfs_txnmgr.c:554
Write of size 8 at addr ffff88807ce5b840 by task jfsCommit/107

CPU: 1 PID: 107 Comm: jfsCommit Not tainted 6.1.119-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+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x15f/0x4f0 mm/kasan/report.c:395
 kasan_report+0x136/0x160 mm/kasan/report.c:495
 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
 instrument_atomic_write include/linux/instrumented.h:87 [inline]
 clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline]
 txEnd+0x350/0x560 fs/jfs/jfs_txnmgr.c:554
 txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline]
 jfs_lazycommit+0x610/0xb60 fs/jfs/jfs_txnmgr.c:2732
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Allocated by task 4256:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383
 kmalloc include/linux/slab.h:557 [inline]
 kzalloc include/linux/slab.h:693 [inline]
 open_inline_log fs/jfs/jfs_logmgr.c:1159 [inline]
 lmLogOpen+0x314/0x1030 fs/jfs/jfs_logmgr.c:1069
 jfs_mount_rw+0xe3/0x640 fs/jfs/jfs_mount.c:253
 jfs_fill_super+0x67d/0xc40 fs/jfs/super.c:565
 mount_bdev+0x2c9/0x3f0 fs/super.c:1443
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x2ba/0xb40 fs/namespace.c:3056
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3584
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 4256:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1724 [inline]
 slab_free_freelist_hook mm/slub.c:1750 [inline]
 slab_free mm/slub.c:3661 [inline]
 __kmem_cache_free+0x25c/0x3c0 mm/slub.c:3674
 lmLogClose+0x29d/0x530
 jfs_umount+0x298/0x370 fs/jfs/jfs_umount.c:116
 jfs_put_super+0x86/0x180 fs/jfs/super.c:194
 generic_shutdown_super+0x130/0x340 fs/super.c:501
 kill_block_super+0x7a/0xe0 fs/super.c:1470
 deactivate_locked_super+0xa0/0x110 fs/super.c:332
 cleanup_mnt+0x490/0x520 fs/namespace.c:1186
 task_work_run+0x246/0x300 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xa73/0x26a0 kernel/exit.c:871
 do_group_exit+0x202/0x2b0 kernel/exit.c:1021
 __do_sys_exit_group kernel/exit.c:1032 [inline]
 __se_sys_exit_group kernel/exit.c:1030 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1030
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88807ce5b800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 64 bytes inside of
 1024-byte region [ffff88807ce5b800, ffff88807ce5bc00)

The buggy address belongs to the physical page:
page:ffffea0001f39600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7ce58
head:ffffea0001f39600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888017c41dc0
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4253, tgid 4253 (syz-executor319), ts 92756444726, free_ts 86358396431
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517
 prep_new_page mm/page_alloc.c:2524 [inline]
 get_page_from_freelist+0x3731/0x38d0 mm/page_alloc.c:4313
 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5590
 alloc_slab_page+0x6a/0x150 mm/slub.c:1794
 allocate_slab mm/slub.c:1939 [inline]
 new_slab+0x84/0x2d0 mm/slub.c:1992
 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180
 __slab_alloc mm/slub.c:3279 [inline]
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:935 [inline]
 __kmalloc+0xa1/0x230 mm/slab_common.c:949
 kmalloc include/linux/slab.h:562 [inline]
 kzalloc include/linux/slab.h:693 [inline]
 tomoyo_init_log+0x1b37/0x2040 security/tomoyo/audit.c:275
 tomoyo_supervisor+0x396/0x12d0 security/tomoyo/common.c:2088
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x58d/0x7f0 security/tomoyo/file.c:734
 tomoyo_path_mkdir+0xe3/0x120 security/tomoyo/tomoyo.c:166
 security_path_mkdir+0xdc/0x130 security/security.c:1174
 do_mkdirat+0x185/0x360 fs/namei.c:4126
 __do_sys_mkdir fs/namei.c:4151 [inline]
 __se_sys_mkdir fs/namei.c:4149 [inline]
 __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4149
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1444 [inline]
 free_pcp_prepare mm/page_alloc.c:1494 [inline]
 free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369
 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464
 __skb_frag_unref include/linux/skbuff.h:3436 [inline]
 skb_release_data+0x37f/0x7a0 net/core/skbuff.c:785
 skb_release_all net/core/skbuff.c:856 [inline]
 __kfree_skb net/core/skbuff.c:870 [inline]
 skb_attempt_defer_free+0x29a/0x400 net/core/skbuff.c:6676
 tcp_eat_recv_skb net/ipv4/tcp.c:1661 [inline]
 tcp_recvmsg_locked+0x1209/0x2450 net/ipv4/tcp.c:2655
 tcp_recvmsg+0x258/0x920 net/ipv4/tcp.c:2701
 inet_recvmsg+0x13b/0x250 net/ipv4/af_inet.c:892
 sock_recvmsg_nosec net/socket.c:1022 [inline]
 sock_recvmsg net/socket.c:1040 [inline]
 sock_read_iter+0x3b2/0x4b0 net/socket.c:1121
 call_read_iter include/linux/fs.h:2259 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x88d/0xbf0 fs/read_write.c:470
 ksys_read+0x19c/0x2c0 fs/read_write.c:613
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Memory state around the buggy address:
 ffff88807ce5b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807ce5b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88807ce5b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff88807ce5b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807ce5b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

Crashes (162):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/10 23:38 linux-6.1.y e4d90d63d385 cfc402b4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/03/30 14:45 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/28 01:10 linux-6.1.y 7ec6f9fa3d97 65e8686b .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/29 18:06 linux-6.1.y e4d90d63d385 5df23865 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/11/28 05:18 linux-6.1.y e4d90d63d385 5df23865 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/12/12 05:09 linux-6.1.y e4d90d63d385 6f1b0fa8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/12/10 14:19 linux-6.1.y e4d90d63d385 cfc402b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/12/06 20:22 linux-6.1.y e4d90d63d385 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/12/05 21:41 linux-6.1.y e4d90d63d385 29f61fce .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/12/03 02:26 linux-6.1.y e4d90d63d385 578925bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/22 13:26 linux-6.1.y b67dc5c9ade9 4b25d554 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/17 16:53 linux-6.1.y b67dc5c9ade9 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/15 21:39 linux-6.1.y 59d7b1a7104a cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/14 10:07 linux-6.1.y d7039b844a1c a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/13 12:56 linux-6.1.y d7039b844a1c bb3f8425 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/11 13:44 linux-6.1.y d7039b844a1c 0c4b1325 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/11 05:22 linux-6.1.y d7039b844a1c 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/09 05:55 linux-6.1.y d7039b844a1c 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/04 09:42 linux-6.1.y 7c15117f9468 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/01 21:19 linux-6.1.y 7c15117f9468 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/31 01:28 linux-6.1.y 7ec6f9fa3d97 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/29 14:42 linux-6.1.y 7ec6f9fa3d97 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/28 18:46 linux-6.1.y 7ec6f9fa3d97 9efb3cc7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/25 15:12 linux-6.1.y 7ec6f9fa3d97 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/25 02:52 linux-6.1.y 7ec6f9fa3d97 c79b8ca5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/22 06:09 linux-6.1.y 54d90d17e8ce a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/21 14:08 linux-6.1.y 54d90d17e8ce f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/16 20:57 linux-6.1.y aa4cd140bba5 666f77ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/16 10:13 linux-6.1.y aa4cd140bba5 bde2d81c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/03 03:13 linux-6.1.y aa4cd140bba5 a4c7fd36 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/10/02 11:37 linux-6.1.y aa4cd140bba5 02f9582a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/09/28 10:39 linux-6.1.y e526b12bf916 ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/09/28 04:25 linux-6.1.y e526b12bf916 440b26ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/09/26 18:05 linux-6.1.y e526b12bf916 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/09/25 21:26 linux-6.1.y e526b12bf916 0d19f247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/09/23 10:53 linux-6.1.y e526b12bf916 89298aad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/09/19 21:59 linux-6.1.y e526b12bf916 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/03/11 13:52 linux-6.1.y 61adba85cc40 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Write in txEnd
2024/11/26 04:30 linux-6.1.y e4d90d63d385 11dbc254 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/11/25 09:58 linux-6.1.y e4d90d63d385 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/11/20 15:32 linux-6.1.y b67dc5c9ade9 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/11/20 14:30 linux-6.1.y b67dc5c9ade9 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/11/19 17:30 linux-6.1.y b67dc5c9ade9 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/11/15 05:35 linux-6.1.y 59d7b1a7104a f6ede3a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/11/14 07:42 linux-6.1.y d7039b844a1c a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/11/06 03:15 linux-6.1.y 7c15117f9468 3a465482 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/10/30 12:59 linux-6.1.y 7ec6f9fa3d97 fb888278 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/10/14 21:38 linux-6.1.y aa4cd140bba5 b01b6661 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 KASAN: use-after-free Write in txEnd
2024/09/24 10:08 linux-6.1.y e526b12bf916 89298aad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan KASAN: use-after-free Read in txEnd
* Struck through repros no longer work on HEAD.