Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: slab-use-after-free Read in udf_free_blocks udf | C | done | done | 2 | 338d | 549d | 25/28 | fixed on 2024/03/20 11:33 |
syzbot |
sign-in | mailing list | source | docs |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: slab-use-after-free Read in udf_free_blocks udf | C | done | done | 2 | 338d | 549d | 25/28 | fixed on 2024/03/20 11:33 |
================================================================== BUG: KASAN: use-after-free in udf_free_blocks+0x203/0x240 fs/udf/balloc.c:658 Read of size 2 at addr ffff888078b54572 by task syz-executor.3/5537 CPU: 0 PID: 5537 Comm: syz-executor.3 Not tainted 6.2.0-rc2-syzkaller-00024-g512dee0c00ad #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:306 print_report+0x107/0x1f0 mm/kasan/report.c:417 kasan_report+0xcd/0x100 mm/kasan/report.c:517 udf_free_blocks+0x203/0x240 fs/udf/balloc.c:658 udf_merge_extents fs/udf/inode.c:1150 [inline] inode_getblk fs/udf/inode.c:876 [inline] udf_get_block+0x3186/0x5130 fs/udf/inode.c:444 __block_write_begin_int+0x54c/0x1a80 fs/buffer.c:1991 __block_write_begin fs/buffer.c:2041 [inline] block_write_begin+0x93/0x1e0 fs/buffer.c:2102 udf_write_begin+0x2d/0x60 fs/udf/inode.c:207 generic_perform_write+0x2e4/0x5e0 mm/filemap.c:3772 __generic_file_write_iter+0x29b/0x400 mm/filemap.c:3868 udf_file_write_iter+0x325/0x5f0 fs/udf/file.c:170 do_iter_write+0x6c2/0xc20 fs/read_write.c:861 vfs_writev fs/read_write.c:934 [inline] do_pwritev+0x200/0x350 fs/read_write.c:1031 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbf1a68c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007fbf1b321168 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007fbf1a7abf80 RCX: 00007fbf1a68c0c9 RDX: 0000000000000001 RSI: 0000000020000680 RDI: 0000000000000006 RBP: 00007fbf1a6e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffee500a44f R14: 00007fbf1b321300 R15: 0000000000022000 </TASK> Allocated by task 5159: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:968 [inline] __kmalloc_node_track_caller+0xad/0x190 mm/slab_common.c:988 kmalloc_reserve net/core/skbuff.c:492 [inline] __alloc_skb+0x12c/0x2c0 net/core/skbuff.c:565 alloc_skb include/linux/skbuff.h:1270 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:751 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline] nsim_dev_trap_report_work+0x268/0xaa0 drivers/net/netdevsim/dev.c:853 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Freed by task 5159: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:518 ____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:1781 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1807 slab_free mm/slub.c:3787 [inline] __kmem_cache_free+0x71/0x110 mm/slub.c:3800 skb_free_head net/core/skbuff.c:822 [inline] skb_release_data+0x4f6/0x710 net/core/skbuff.c:851 skb_release_all net/core/skbuff.c:916 [inline] __kfree_skb+0x5b/0x1d0 net/core/skbuff.c:930 nsim_dev_trap_report drivers/net/netdevsim/dev.c:824 [inline] nsim_dev_trap_report_work+0x767/0xaa0 drivers/net/netdevsim/dev.c:853 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 The buggy address belongs to the object at ffff888078b54000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 1394 bytes inside of 4096-byte region [ffff888078b54000, ffff888078b55000) The buggy address belongs to the physical page: page:ffffea0001e2d400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78b50 head:ffffea0001e2d400 order:3 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 anon flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff888012842140 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000040004 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 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5112, tgid 5112 (syz-executor.2), ts 181694561807, free_ts 180861593054 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283 __alloc_pages+0x259/0x560 mm/page_alloc.c:5549 alloc_slab_page+0xbd/0x190 mm/slub.c:1851 allocate_slab+0x5e/0x3c0 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3193 __slab_alloc mm/slub.c:3292 [inline] __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x25b/0x340 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc_node_track_caller+0x9c/0x190 mm/slab_common.c:988 kmalloc_reserve net/core/skbuff.c:492 [inline] __alloc_skb+0x12c/0x2c0 net/core/skbuff.c:565 alloc_skb include/linux/skbuff.h:1270 [inline] nlmsg_new include/net/netlink.h:1002 [inline] rtmsg_ifinfo_build_skb+0x81/0x1a0 net/core/rtnetlink.c:3948 rtmsg_ifinfo_event net/core/rtnetlink.c:3986 [inline] rtmsg_ifinfo+0xc5/0x200 net/core/rtnetlink.c:3995 __dev_notify_flags+0xf9/0x5e0 net/core/dev.c:8565 dev_change_flags+0xe8/0x190 net/core/dev.c:8607 do_setlink+0xef5/0x3d40 net/core/rtnetlink.c:2827 __rtnl_newlink net/core/rtnetlink.c:3590 [inline] rtnl_newlink+0x1780/0x2020 net/core/rtnetlink.c:3637 rtnetlink_rcv_msg+0x822/0xf10 net/core/rtnetlink.c:6141 netlink_rcv_skb+0x1f0/0x470 net/netlink/af_netlink.c:2564 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1446 [inline] free_pcp_prepare+0x751/0x780 mm/page_alloc.c:1496 free_unref_page_prepare mm/page_alloc.c:3369 [inline] free_unref_page+0x19/0x4c0 mm/page_alloc.c:3464 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x1e0/0x340 mm/slub.c:3491 kmalloc_trace+0x26/0x60 mm/slab_common.c:1062 kmalloc include/linux/slab.h:580 [inline] kzalloc include/linux/slab.h:720 [inline] inet_alloc_ifa net/ipv4/devinet.c:221 [inline] inetdev_event+0x8d1/0x1500 net/ipv4/devinet.c:1559 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:455 __dev_notify_flags+0x308/0x5e0 dev_change_flags+0xe8/0x190 net/core/dev.c:8607 do_setlink+0xef5/0x3d40 net/core/rtnetlink.c:2827 __rtnl_newlink net/core/rtnetlink.c:3590 [inline] rtnl_newlink+0x1780/0x2020 net/core/rtnetlink.c:3637 rtnetlink_rcv_msg+0x822/0xf10 net/core/rtnetlink.c:6141 netlink_rcv_skb+0x1f0/0x470 net/netlink/af_netlink.c:2564 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1356 Memory state around the buggy address: ffff888078b54400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888078b54480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888078b54500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888078b54580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888078b54600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/01/05 10:54 | upstream | 512dee0c00ad | 1dac8c7a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-fs | KASAN: use-after-free Read in udf_free_blocks |