------------[ cut here ]------------ WARNING: CPU: 1 PID: 6006 at mm/slab_common.c:953 free_large_kmalloc+0x34/0x12c mm/slab_common.c:954 Modules linked in: CPU: 1 PID: 6006 Comm: syz-executor.1 Not tainted 6.5.0-rc7-syzkaller-gfe4469582053 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : free_large_kmalloc+0x34/0x12c mm/slab_common.c:954 lr : kfree+0xf8/0x19c mm/slab_common.c:1028 sp : ffff800096c07700 x29: ffff800096c07700 x28: ffff0000e857d770 x27: ffff0000e857ce30 x26: ffff0000d41af428 x25: ffff0000d41af420 x24: 0000000000000000 x23: ffff0000e857bbb0 x22: dfff800000000000 x21: ffff800080841de0 x20: ffff0000d88c8000 x19: fffffc0003623200 x18: ffff800096c075d4 x17: ffff80008e09d000 x16: ffff80008a572e30 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000406 x11: 0000000000000000 x10: 0000000000000000 x9 : 05ffc00000000000 x8 : ffff800090d43000 x7 : ffff8000807a6778 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff0000d88c8000 x0 : fffffc0003623200 Call trace: free_large_kmalloc+0x34/0x12c mm/slab_common.c:954 kfree+0xf8/0x19c mm/slab_common.c:1028 diUnmount+0xf4/0x10c fs/jfs/jfs_imap.c:195 jfs_umount+0x15c/0x360 fs/jfs/jfs_umount.c:63 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x328 fs/super.c:499 kill_block_super+0x60/0xa0 fs/super.c:1417 deactivate_locked_super+0xac/0x124 fs/super.c:330 deactivate_super+0xe0/0x100 fs/super.c:361 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261 task_work_run+0x230/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0xa0/0x16c arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 irq event stamp: 161780 hardirqs last enabled at (161779): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (161779): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (161780): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (161218): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (161216): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- object pointer: 0x000000005e69ac14 ================================================================== BUG: KASAN: double-free in kfree+0xf8/0x19c mm/slab_common.c:1028 Free of addr ffff0000d88c8000 by task syz-executor.1/6006 CPU: 0 PID: 6006 Comm: syz-executor.1 Tainted: G W 6.5.0-rc7-syzkaller-gfe4469582053 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x174/0x514 mm/kasan/report.c:475 kasan_report_invalid_free+0xc4/0x118 mm/kasan/report.c:550 __kasan_kfree_large+0xa4/0xc0 mm/kasan/common.c:272 kasan_kfree_large include/linux/kasan.h:170 [inline] free_large_kmalloc+0x64/0x12c mm/slab_common.c:957 kfree+0xf8/0x19c mm/slab_common.c:1028 diUnmount+0xf4/0x10c fs/jfs/jfs_imap.c:195 jfs_umount+0x15c/0x360 fs/jfs/jfs_umount.c:63 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x328 fs/super.c:499 kill_block_super+0x60/0xa0 fs/super.c:1417 deactivate_locked_super+0xac/0x124 fs/super.c:330 deactivate_super+0xe0/0x100 fs/super.c:361 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261 task_work_run+0x230/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0xa0/0x16c arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Allocated by task 9: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:511 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:985 [inline] __kmalloc+0xcc/0x1b8 mm/slab_common.c:998 kmalloc include/linux/slab.h:586 [inline] kzalloc include/linux/slab.h:703 [inline] ieee802_11_parse_elems_full+0xd0/0x1e3c net/mac80211/util.c:1602 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2327 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2334 [inline] ieee80211_inform_bss+0x118/0xd60 net/mac80211/scan.c:79 rdev_inform_bss+0x13c/0x5bc net/wireless/rdev-ops.h:418 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2885 [inline] cfg80211_inform_bss_frame_data+0xb08/0x167c net/wireless/scan.c:2912 ieee80211_bss_info_update+0x6a4/0x97c 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+0x8e0/0x292c net/mac80211/ibss.c:1642 ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline] ieee80211_iface_work+0x5d0/0xa9c net/mac80211/iface.c:1658 cfg80211_wiphy_work+0x1fc/0x240 net/wireless/core.c:435 process_one_work+0x800/0x1480 kernel/workqueue.c:2600 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2751 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853 Freed by task 9: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:522 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1792 [inline] slab_free_freelist_hook mm/slub.c:1818 [inline] slab_free mm/slub.c:3801 [inline] __kmem_cache_free+0x2ac/0x480 mm/slub.c:3814 kfree+0xb8/0x19c mm/slab_common.c:1034 ieee80211_inform_bss+0x918/0xd60 net/mac80211/scan.c:160 rdev_inform_bss+0x13c/0x5bc net/wireless/rdev-ops.h:418 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2885 [inline] cfg80211_inform_bss_frame_data+0xb08/0x167c net/wireless/scan.c:2912 ieee80211_bss_info_update+0x6a4/0x97c 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+0x8e0/0x292c net/mac80211/ibss.c:1642 ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline] ieee80211_iface_work+0x5d0/0xa9c net/mac80211/iface.c:1658 cfg80211_wiphy_work+0x1fc/0x240 net/wireless/core.c:435 process_one_work+0x800/0x1480 kernel/workqueue.c:2600 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2751 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853 The buggy address belongs to the object at ffff0000d88c8000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 0 bytes inside of 1024-byte region [ffff0000d88c8000, ffff0000d88c8400) The buggy address belongs to the physical page: page:00000000b1366876 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1188c8 head:00000000b1366876 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000010200 ffff0000c0001dc0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000d88c7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0000d88c7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0000d88c8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000d88c8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000d88c8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== page:00000000b1366876 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1188c8 head:00000000b1366876 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000010200 ffff0000c0001dc0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: VM_BUG_ON_FOLIO(folio_test_slab(folio)) ------------[ cut here ]------------ kernel BUG at include/linux/memcontrol.h:380! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 6006 Comm: syz-executor.1 Tainted: G B W 6.5.0-rc7-syzkaller-gfe4469582053 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __folio_memcg include/linux/memcontrol.h:380 [inline] pc : folio_memcg+0x148/0x174 include/linux/memcontrol.h:433 lr : __folio_memcg include/linux/memcontrol.h:380 [inline] lr : folio_memcg+0x148/0x174 include/linux/memcontrol.h:433 sp : ffff800096c07670 x29: ffff800096c07670 x28: ffff0000e857d770 x27: ffff0000e857ce30 x26: ffff0000d41af428 x25: ffff0000d41af420 x24: dfff800000000000 x23: 1fffff80006c4641 x22: dfff800000000000 x21: 0000000000000000 x20: fffffc0003623208 x19: fffffc0003623200 x18: 1fffe0003683adc6 x17: 0000000000000000 x16: ffff80008a572e30 x15: 0000000000000001 x14: 1fffe0003683ae2a x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff0000d73b9bc0 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800096c06ef8 x4 : ffff80008e17f000 x3 : ffff8000805a25e4 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000003c Call trace: __folio_memcg include/linux/memcontrol.h:380 [inline] folio_memcg+0x148/0x174 include/linux/memcontrol.h:433 page_memcg include/linux/memcontrol.h:438 [inline] __mod_lruvec_page_state+0x110/0x2ec mm/memcontrol.c:860 mod_lruvec_page_state include/linux/vmstat.h:568 [inline] free_large_kmalloc+0x98/0x12c mm/slab_common.c:960 kfree+0xf8/0x19c mm/slab_common.c:1028 diUnmount+0xf4/0x10c fs/jfs/jfs_imap.c:195 jfs_umount+0x15c/0x360 fs/jfs/jfs_umount.c:63 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x328 fs/super.c:499 kill_block_super+0x60/0xa0 fs/super.c:1417 deactivate_locked_super+0xac/0x124 fs/super.c:330 deactivate_super+0xe0/0x100 fs/super.c:361 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261 task_work_run+0x230/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0xa0/0x16c arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Code: f004ec61 912b8021 aa1303e0 97f990c8 (d4210000) ---[ end trace 0000000000000000 ]---