... 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+0x32d/0x520 fs/jfs/jfs_txnmgr.c:554 Write of size 8 at addr ffff888059db2840 by task jfsCommit/112 CPU: 0 PID: 112 Comm: jfsCommit Not tainted 6.6.95-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xac/0x230 mm/kasan/report.c:475 kasan_report+0x117/0x150 mm/kasan/report.c:588 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x288/0x290 mm/kasan/generic.c:187 instrument_atomic_write include/linux/instrumented.h:82 [inline] clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline] txEnd+0x32d/0x520 fs/jfs/jfs_txnmgr.c:554 txLazyCommit fs/jfs/jfs_txnmgr.c:2684 [inline] jfs_lazycommit+0x5a6/0xa60 fs/jfs/jfs_txnmgr.c:2732 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Allocated by task 17542: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4e/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:721 [inline] open_inline_log fs/jfs/jfs_logmgr.c:1159 [inline] lmLogOpen+0x2df/0xfb0 fs/jfs/jfs_logmgr.c:1069 jfs_mount_rw+0xea/0x670 fs/jfs/jfs_mount.c:257 jfs_fill_super+0x592/0xac0 fs/jfs/super.c:565 mount_bdev+0x22b/0x2d0 fs/super.c:1643 legacy_get_tree+0xea/0x180 fs/fs_context.c:662 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3366 do_mount fs/namespace.c:3706 [inline] __do_sys_mount fs/namespace.c:3915 [inline] __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3892 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Freed by task 5764: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4e/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1806 [inline] slab_free_freelist_hook+0x130/0x1b0 mm/slub.c:1832 slab_free mm/slub.c:3816 [inline] __kmem_cache_free+0xba/0x1f0 mm/slub.c:3829 lmLogClose+0x297/0x520 fs/jfs/jfs_logmgr.c:-1 jfs_umount+0x2ef/0x3c0 fs/jfs/jfs_umount.c:114 jfs_put_super+0x8c/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x134/0x2b0 fs/super.c:693 kill_block_super+0x44/0x90 fs/super.c:1660 deactivate_locked_super+0x97/0x100 fs/super.c:481 cleanup_mnt+0x429/0x4c0 fs/namespace.c:1250 task_work_run+0x1ce/0x250 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Last potentially related work creation: kasan_save_stack+0x3e/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:492 kvfree_call_rcu+0xee/0x780 kernel/rcu/tree.c:3448 cgroup_migrate_finish+0x1a3/0x370 kernel/cgroup/cgroup.c:2669 cgroup_attach_task+0x5cd/0x830 kernel/cgroup/cgroup.c:2868 cgroup_attach_task_all+0x9a/0xe0 kernel/cgroup/cgroup-v1.c:70 kvm_vm_worker_thread+0xd2/0x570 virt/kvm/kvm_main.c:6195 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Second to last potentially related work creation: kasan_save_stack+0x3e/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:492 __call_rcu_common kernel/rcu/tree.c:2717 [inline] call_rcu+0x14f/0x920 kernel/rcu/tree.c:2833 sctp_association_free+0x6a1/0x7f0 net/sctp/associola.c:380 sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:944 [inline] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1330 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline] sctp_do_sm+0x3e64/0x59a0 net/sctp/sm_sideeffect.c:1169 sctp_assoc_bh_rcv+0x3f2/0x630 net/sctp/associola.c:1052 sctp_backlog_rcv+0x163/0x3e0 net/sctp/input.c:331 sk_backlog_rcv include/net/sock.h:1123 [inline] __release_sock+0x1bd/0x430 net/core/sock.c:2988 release_sock+0x5f/0x1c0 net/core/sock.c:3525 sctp_wait_for_connect+0x382/0x680 net/sctp/socket.c:9361 __sctp_connect+0xabf/0xd20 net/sctp/socket.c:1247 sctp_connect net/sctp/socket.c:4819 [inline] sctp_inet_connect+0x12e/0x1e0 net/sctp/socket.c:4834 __sys_connect_file net/socket.c:2057 [inline] __sys_connect+0x397/0x420 net/socket.c:2074 __do_sys_connect net/socket.c:2084 [inline] __se_sys_connect net/socket.c:2081 [inline] __x64_sys_connect+0x7a/0x90 net/socket.c:2081 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff888059db2800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 64 bytes inside of freed 1024-byte region [ffff888059db2800, ffff888059db2c00) The buggy address belongs to the physical page: page:ffffea0001676c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888059db3000 pfn:0x59db0 head:ffffea0001676c00 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 ffff888017841dc0 ffffea0000bfd400 dead000000000003 raw: ffff888059db3000 0000000080100009 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 58, tgid 58 (kworker/u4:4), ts 76004464925, free_ts 75851953152 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1cd/0x210 mm/page_alloc.c:1554 prep_new_page mm/page_alloc.c:1561 [inline] get_page_from_freelist+0x195c/0x19f0 mm/page_alloc.c:3191 __alloc_pages+0x1e3/0x460 mm/page_alloc.c:4457 alloc_slab_page+0x5d/0x170 mm/slub.c:1876 allocate_slab mm/slub.c:2023 [inline] new_slab+0x87/0x2e0 mm/slub.c:2076 ___slab_alloc+0xc6d/0x12f0 mm/slub.c:3230 __slab_alloc mm/slub.c:3329 [inline] __slab_alloc_node mm/slub.c:3382 [inline] slab_alloc_node mm/slub.c:3475 [inline] __kmem_cache_alloc_node+0x1a2/0x260 mm/slub.c:3524 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc+0xa4/0x240 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] kzalloc include/linux/slab.h:721 [inline] ieee802_11_parse_elems_full+0xb9/0x2080 net/mac80211/util.c:1616 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2328 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2335 [inline] ieee80211_inform_bss+0x107/0x1060 net/mac80211/scan.c:79 rdev_inform_bss+0x106/0x410 net/wireless/rdev-ops.h:418 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2985 [inline] cfg80211_inform_bss_frame_data+0xb33/0x12b0 net/wireless/scan.c:3012 ieee80211_bss_info_update+0x70b/0x930 net/mac80211/scan.c:211 ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline] ieee80211_ibss_rx_queued_mgmt+0x17c9/0x2ac0 net/mac80211/ibss.c:1642 ieee80211_iface_process_skb net/mac80211/iface.c:1643 [inline] ieee80211_iface_work+0x717/0xc70 net/mac80211/iface.c:1697 cfg80211_wiphy_work+0x225/0x260 net/wireless/core.c:437 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1154 [inline] free_unref_page_prepare+0x7ce/0x8e0 mm/page_alloc.c:2336 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2429 napi_frag_unref include/linux/skbuff.h:3484 [inline] skb_release_data+0x49a/0x800 net/core/skbuff.c:981 skb_release_all net/core/skbuff.c:1053 [inline] __kfree_skb net/core/skbuff.c:1067 [inline] skb_attempt_defer_free+0x12f/0x530 net/core/skbuff.c:6840 tcp_eat_recv_skb net/ipv4/tcp.c:1515 [inline] tcp_recvmsg_locked+0x1194/0x2300 net/ipv4/tcp.c:2555 tcp_recvmsg+0x216/0x810 net/ipv4/tcp.c:2601 inet_recvmsg+0x130/0x1e0 net/ipv4/af_inet.c:882 sock_recvmsg_nosec net/socket.c:1046 [inline] sock_recvmsg net/socket.c:1068 [inline] __sys_recvfrom+0x30f/0x4a0 net/socket.c:2253 __do_sys_recvfrom net/socket.c:2271 [inline] __se_sys_recvfrom net/socket.c:2267 [inline] __x64_sys_recvfrom+0xde/0xf0 net/socket.c:2267 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Memory state around the buggy address: ffff888059db2700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888059db2780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888059db2800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888059db2880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888059db2900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================