... Log Wrap ... Log Wrap ... Log Wrap ... ================================================================== BUG: KASAN: slab-use-after-free in instrument_atomic_write include/linux/instrumented.h:82 [inline] BUG: KASAN: slab-use-after-free in clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline] BUG: KASAN: slab-use-after-free in txEnd+0x36c/0x5a0 fs/jfs/jfs_txnmgr.c:554 Write of size 8 at addr ffff88805d5d2040 by task jfsCommit/133 CPU: 0 PID: 133 Comm: jfsCommit Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189 instrument_atomic_write include/linux/instrumented.h:82 [inline] clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline] txEnd+0x36c/0x5a0 fs/jfs/jfs_txnmgr.c:554 txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline] jfs_lazycommit+0x77b/0xb20 fs/jfs/jfs_txnmgr.c:2733 kthread+0x2c1/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 Allocated by task 6599: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387 kmalloc include/linux/slab.h:628 [inline] kzalloc include/linux/slab.h:749 [inline] open_inline_log fs/jfs/jfs_logmgr.c:1159 [inline] lmLogOpen+0x56d/0x1410 fs/jfs/jfs_logmgr.c:1069 jfs_mount_rw+0x2ea/0x700 fs/jfs/jfs_mount.c:257 jfs_fill_super+0x9d6/0xd20 fs/jfs/super.c:565 mount_bdev+0x1e3/0x2d0 fs/super.c:1676 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8f/0x380 fs/super.c:1797 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x6e1/0x1f10 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __ia32_sys_mount+0x295/0x320 fs/namespace.c:3875 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x7a/0x120 arch/x86/entry/common.c:321 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x7a/0x84 Freed by task 5208: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:240 [inline] __kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2106 [inline] slab_free mm/slub.c:4280 [inline] kfree+0x129/0x390 mm/slub.c:4390 lmLogClose+0x585/0x710 fs/jfs/jfs_logmgr.c:1461 jfs_umount+0x2f0/0x440 fs/jfs/jfs_umount.c:114 jfs_put_super+0x88/0x1d0 fs/jfs/super.c:194 generic_shutdown_super+0x159/0x3d0 fs/super.c:641 kill_block_super+0x3b/0x90 fs/super.c:1693 deactivate_locked_super+0xbe/0x1a0 fs/super.c:472 deactivate_super+0xde/0x100 fs/super.c:505 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14e/0x250 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x275/0x2a0 kernel/entry/common.c:218 __do_fast_syscall_32+0x8a/0x120 arch/x86/entry/common.c:324 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x7a/0x84 The buggy address belongs to the object at ffff88805d5d2000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 64 bytes inside of freed 1024-byte region [ffff88805d5d2000, ffff88805d5d2400) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5d5d0 head: order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4fff80000000840(slab|head|node=1|zone=1|lastcpupid=0xfff) page_type: 0xffffffff() raw: 04fff80000000840 ffff888014c42dc0 ffffea00016e8000 dead000000000002 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 head: 04fff80000000840 ffff888014c42dc0 ffffea00016e8000 dead000000000002 head: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 head: 04fff80000000003 ffffea0001757401 ffffea0001757448 00000000ffffffff head: 0000000800000000 0000000000000000 00000000ffffffff 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 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 61, tgid 61 (kworker/1:1), ts 58031888609, free_ts 57949314325 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1534 prep_new_page mm/page_alloc.c:1541 [inline] get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3317 __alloc_pages+0x22b/0x2460 mm/page_alloc.c:4575 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page mm/slub.c:2175 [inline] allocate_slab mm/slub.c:2338 [inline] new_slab+0xcc/0x3a0 mm/slub.c:2391 ___slab_alloc+0x670/0x16d0 mm/slub.c:3525 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3610 __slab_alloc_node mm/slub.c:3663 [inline] slab_alloc_node mm/slub.c:3835 [inline] __do_kmalloc_node mm/slub.c:3965 [inline] __kmalloc_node_track_caller+0x367/0x470 mm/slub.c:3986 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:599 __alloc_skb+0x164/0x380 net/core/skbuff.c:668 alloc_skb include/linux/skbuff.h:1318 [inline] nlmsg_new include/net/netlink.h:1010 [inline] inet6_rt_notify+0xf0/0x2b0 net/ipv6/route.c:6175 fib6_add_rt2node net/ipv6/ip6_fib.c:1261 [inline] fib6_add+0x2503/0x4ba0 net/ipv6/ip6_fib.c:1487 __ip6_ins_rt net/ipv6/route.c:1313 [inline] ip6_route_add+0x8d/0x190 net/ipv6/route.c:3855 addrconf_prefix_route+0x2fe/0x510 net/ipv6/addrconf.c:2483 addrconf_add_linklocal+0x32a/0x650 net/ipv6/addrconf.c:3314 addrconf_addr_gen+0x37b/0x3d0 net/ipv6/addrconf.c:3443 addrconf_dev_config net/ipv6/addrconf.c:3489 [inline] addrconf_init_auto_addrs+0x446/0x820 net/ipv6/addrconf.c:3567 page last free pid 5214 tgid 5214 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1141 [inline] free_unref_page_prepare+0x527/0xb10 mm/page_alloc.c:2347 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2487 __put_partials+0x14c/0x170 mm/slub.c:2906 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:322 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3798 [inline] slab_alloc_node mm/slub.c:3845 [inline] kmem_cache_alloc_lru+0x140/0x6f0 mm/slub.c:3864 alloc_inode_sb include/linux/fs.h:3089 [inline] sock_alloc_inode+0x25/0x1c0 net/socket.c:308 alloc_inode+0x5d/0x230 fs/inode.c:261 new_inode_pseudo+0x16/0x80 fs/inode.c:1007 sock_alloc+0x40/0x280 net/socket.c:634 __sock_create+0xc0/0x800 net/socket.c:1535 sock_create net/socket.c:1622 [inline] __sys_socket_create net/socket.c:1659 [inline] __sys_socket+0x14f/0x260 net/socket.c:1706 __do_compat_sys_socketcall+0x57e/0x700 net/compat.c:448 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x7a/0x120 arch/x86/entry/common.c:321 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346 Memory state around the buggy address: ffff88805d5d1f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805d5d1f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88805d5d2000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805d5d2080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805d5d2100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================