... 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 ffff8880259ae040 by task jfsCommit/133 CPU: 0 PID: 133 Comm: jfsCommit Not tainted 6.8.0-rc4-syzkaller-00267-g0f1dd5e91e2b #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+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/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+0x77d/0xb20 fs/jfs/jfs_txnmgr.c:2733 kthread+0x2c6/0x3b0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 Allocated by task 5233: 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:372 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:389 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:711 [inline] open_inline_log fs/jfs/jfs_logmgr.c:1159 [inline] lmLogOpen+0x571/0x1410 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:1663 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8f/0x380 fs/super.c:1784 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x14ea/0x1f20 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] __x64_sys_mount+0x297/0x320 fs/namespace.c:3875 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 Freed by task 5196: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x121/0x1c0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x124/0x370 mm/slub.c:4409 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:646 kill_block_super+0x3b/0x90 fs/super.c:1680 deactivate_locked_super+0xbe/0x1a0 fs/super.c:477 deactivate_super+0xde/0x100 fs/super.c:510 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14f/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:108 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline] syscall_exit_to_user_mode+0x281/0x2b0 kernel/entry/common.c:212 do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x6f/0x77 The buggy address belongs to the object at ffff8880259ae000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 64 bytes inside of freed 1024-byte region [ffff8880259ae000, ffff8880259ae400) The buggy address belongs to the physical page: page:ffffea0000966a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x259a8 head:ffffea0000966a00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 ksm flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000840 ffff888014c42dc0 ffffea0000955e00 0000000000000003 raw: 0000000000000000 0000000080100010 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 0x152820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 45, tgid 45 (kworker/u16:2), ts 274296637584, free_ts 274210941077 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3311 __alloc_pages+0x22f/0x2440 mm/page_alloc.c:4567 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page mm/slub.c:2190 [inline] allocate_slab mm/slub.c:2354 [inline] new_slab+0xcc/0x3a0 mm/slub.c:2407 ___slab_alloc+0x4af/0x19a0 mm/slub.c:3540 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3625 __slab_alloc_node mm/slub.c:3678 [inline] slab_alloc_node mm/slub.c:3850 [inline] __do_kmalloc_node mm/slub.c:3980 [inline] __kmalloc+0x3b8/0x440 mm/slub.c:3994 kmalloc include/linux/slab.h:594 [inline] kzalloc include/linux/slab.h:711 [inline] ieee802_11_parse_elems_full+0xee/0x13b0 net/mac80211/util.c:1628 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2291 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2298 [inline] ieee80211_inform_bss+0x120/0x1160 net/mac80211/scan.c:79 rdev_inform_bss+0xea/0x430 net/wireless/rdev-ops.h:418 cfg80211_inform_single_bss_frame_data+0x964/0x12c0 net/wireless/scan.c:3094 cfg80211_inform_bss_frame_data+0x14c/0x360 net/wireless/scan.c:3125 ieee80211_bss_info_update+0x311/0xab0 net/mac80211/scan.c:226 ieee80211_rx_bss_info net/mac80211/ibss.c:1098 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1577 [inline] ieee80211_ibss_rx_queued_mgmt+0x197a/0x30f0 net/mac80211/ibss.c:1604 ieee80211_iface_process_skb net/mac80211/iface.c:1589 [inline] ieee80211_iface_work+0xa67/0xda0 net/mac80211/iface.c:1643 cfg80211_wiphy_work+0x255/0x330 net/wireless/core.c:437 page last free pid 4669 tgid 4669 stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1140 [inline] free_unref_page_prepare+0x527/0xb10 mm/page_alloc.c:2346 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486 __put_partials+0x14c/0x170 mm/slub.c:2922 qlink_free mm/kasan/quarantine.c:160 [inline] qlist_free_all+0x58/0x150 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:324 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3813 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc+0x136/0x320 mm/slub.c:3867 getname_flags.part.0+0x50/0x4f0 fs/namei.c:140 getname_flags+0x9c/0xf0 include/linux/audit.h:322 user_path_at_empty+0x2c/0x60 fs/namei.c:2919 do_readlinkat+0xdd/0x310 fs/stat.c:499 __do_sys_readlink fs/stat.c:532 [inline] __se_sys_readlink fs/stat.c:529 [inline] __x64_sys_readlink+0x78/0xc0 fs/stat.c:529 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 Memory state around the buggy address: ffff8880259adf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880259adf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880259ae000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880259ae080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880259ae100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb 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