need_discard 0
need_inc_gen 0
dirty_sectors 256
stripe_sectors 0
cached_sectors 0
stripe 0
stripe_redundancy 0
io_time[READ] 0
io_time[WRITE] 0
fragmentation 0
bp_start 8
incorrectly set at freespace:0:38:0 (free 0, genbits 0 should be 0), fixing
bcachefs (loop0): going read-write
bcachefs (loop0): journal_replay...
bcachefs (loop0): u64s 13 type alloc_v4 0:37:0 len 0 ver 0:
gen 0 oldest_gen 0 data_type btree
journal_seq_nonempty 0
journal_seq_empty 0
need_discard 0
need_inc_gen 0
dirty_sectors 256
stripe_sectors 0
cached_sectors 0
stripe 0
stripe_redundancy 0
io_time[READ] 0
io_time[WRITE] 0
fragmentation 0
bp_start 8
incorrectly set at freespace:0:37:0 (free 0, genbits 0 should be 0), fixing
bcachefs (loop0): u64s 13 type alloc_v4 0:38:0 len 0 ver 0:
gen 0 oldest_gen 0 data_type btree
journal_seq_nonempty 0
journal_seq_empty 0
need_discard 0
need_inc_gen 0
dirty_sectors 256
stripe_sectors 0
cached_sectors 0
stripe 0
stripe_redundancy 0
io_time[READ] 0
io_time[WRITE] 0
fragmentation 0
bp_start 8
incorrectly set at freespace:0:38:0 (free 0, genbits 0 should be 0), fixing
==================================================================
BUG: KASAN: slab-use-after-free in journal_entry_init fs/bcachefs/journal.h:217 [inline]
BUG: KASAN: slab-use-after-free in bch2_journal_add_entry fs/bcachefs/journal.h:242 [inline]
BUG: KASAN: slab-use-after-free in bch2_journal_res_put fs/bcachefs/journal.h:320 [inline]
BUG: KASAN: slab-use-after-free in do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:868 [inline]
BUG: KASAN: slab-use-after-free in __bch2_trans_commit+0x359e/0x8880 fs/bcachefs/btree_trans_commit.c:1079
Write of size 8 at addr ffff8880558a0000 by task syz.0.0/5325
CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.16.0-rc2-syzkaller-00378-gb67ec639010f #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0xd2/0x2b0 mm/kasan/report.c:521
kasan_report+0x118/0x150 mm/kasan/report.c:634
journal_entry_init fs/bcachefs/journal.h:217 [inline]
bch2_journal_add_entry fs/bcachefs/journal.h:242 [inline]
bch2_journal_res_put fs/bcachefs/journal.h:320 [inline]
do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:868 [inline]
__bch2_trans_commit+0x359e/0x8880 fs/bcachefs/btree_trans_commit.c:1079
bch2_trans_commit fs/bcachefs/btree_update.h:242 [inline]
bch2_journal_replay+0x1789/0x2620 fs/bcachefs/recovery.c:396
bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:485 [inline]
__bch2_run_recovery_passes+0x395/0x1010 fs/bcachefs/recovery_passes.c:540
bch2_run_recovery_passes+0x184/0x210 fs/bcachefs/recovery_passes.c:611
bch2_fs_recovery+0x25fd/0x3950 fs/bcachefs/recovery.c:989
bch2_fs_start+0xa99/0xd90 fs/bcachefs/super.c:1203
bch2_fs_get_tree+0xb02/0x14f0 fs/bcachefs/fs.c:2489
vfs_get_tree+0x8f/0x2b0 fs/super.c:1804
do_new_mount+0x24a/0xa40 fs/namespace.c:3885
do_mount fs/namespace.c:4222 [inline]
__do_sys_mount fs/namespace.c:4433 [inline]
__se_sys_mount+0x317/0x410 fs/namespace.c:4410
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f114a3900ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f114b19be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f114b19bef0 RCX: 00007f114a3900ca
RDX: 00002000000000c0 RSI: 0000200000000080 RDI: 00007f114b19beb0
RBP: 00002000000000c0 R08: 00007f114b19bef0 R09: 0000000000818001
R10: 0000000000818001 R11: 0000000000000246 R12: 0000200000000080
R13: 00007f114b19beb0 R14: 0000000000005943 R15: 0000200000000100
</TASK>
Allocated by task 1152:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4328 [inline]
__kmalloc_node_track_caller_noprof+0x271/0x4e0 mm/slub.c:4347
kmalloc_reserve+0x136/0x290 net/core/skbuff.c:601
pskb_expand_head+0x18e/0x1150 net/core/skbuff.c:2241
__skb_cow include/linux/skbuff.h:3777 [inline]
skb_cow_head include/linux/skbuff.h:3811 [inline]
batadv_skb_head_push+0x169/0x200 net/batman-adv/mesh-interface.c:71
batadv_send_skb_packet+0xfa/0x6d0 net/batman-adv/send.c:86
batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:392 [inline]
batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x62f/0x7e0 net/batman-adv/bat_iv_ogm.c:1708
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 1152:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576
poison_slab_object mm/kasan/common.c:247 [inline]
__kasan_slab_free+0x62/0x70 mm/kasan/common.c:264
kasan_slab_free include/linux/kasan.h:233 [inline]
slab_free_hook mm/slub.c:2381 [inline]
slab_free mm/slub.c:4643 [inline]
kfree+0x18e/0x440 mm/slub.c:4842
skb_release_data+0x62d/0x7c0 net/core/skbuff.c:1087
skb_release_all net/core/skbuff.c:1152 [inline]
__kfree_skb net/core/skbuff.c:1166 [inline]
sk_skb_reason_drop+0x127/0x170 net/core/skbuff.c:1204
kfree_skb_reason include/linux/skbuff.h:1275 [inline]
__netif_receive_skb_core+0x3be7/0x4180 net/core/dev.c:5951
__netif_receive_skb_one_core net/core/dev.c:5975 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6090
process_backlog+0x60e/0x14f0 net/core/dev.c:6442
__napi_poll+0xc4/0x480 net/core/dev.c:7414
napi_poll net/core/dev.c:7478 [inline]
net_rx_action+0x707/0xe30 net/core/dev.c:7605
handle_softirqs+0x286/0x870 kernel/softirq.c:579
do_softirq+0xec/0x180 kernel/softirq.c:480
__local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline]
__dev_queue_xmit+0x1cd7/0x3a70 net/core/dev.c:4740
dev_queue_xmit include/linux/netdevice.h:3355 [inline]
batadv_send_skb_packet+0x44f/0x6d0 net/batman-adv/send.c:108
batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:392 [inline]
batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x62f/0x7e0 net/batman-adv/bat_iv_ogm.c:1708
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff8880558a0000
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 0 bytes inside of
freed 1024-byte region [ffff8880558a0000, ffff8880558a0400)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x558a0
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000040 ffff88801a441dc0 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 04fff00000000040 ffff88801a441dc0 dead000000000122 0000000000000000
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 04fff00000000002 ffffea0001562801 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1152, tgid 1152 (kworker/u4:10), ts 86441504152, free_ts 86424810270
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
alloc_slab_page mm/slub.c:2451 [inline]
allocate_slab+0x8a/0x3b0 mm/slub.c:2619
new_slab mm/slub.c:2673 [inline]
___slab_alloc+0xbfc/0x1480 mm/slub.c:3859
__slab_alloc mm/slub.c:3949 [inline]
__slab_alloc_node mm/slub.c:4024 [inline]
slab_alloc_node mm/slub.c:4185 [inline]
__do_kmalloc_node mm/slub.c:4327 [inline]
__kmalloc_node_track_caller_noprof+0x2f8/0x4e0 mm/slub.c:4347
kmalloc_reserve+0x136/0x290 net/core/skbuff.c:601
pskb_expand_head+0x18e/0x1150 net/core/skbuff.c:2241
__skb_cow include/linux/skbuff.h:3777 [inline]
skb_cow_head include/linux/skbuff.h:3811 [inline]
batadv_skb_head_push+0x169/0x200 net/batman-adv/mesh-interface.c:71
batadv_send_skb_packet+0xfa/0x6d0 net/batman-adv/send.c:86
batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:392 [inline]
batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:420 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x62f/0x7e0 net/batman-adv/bat_iv_ogm.c:1708
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
page last free pid 13 tgid 13 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1248 [inline]
__free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
stack_depot_save_flags+0x445/0x900 lib/stackdepot.c:678
kasan_save_stack mm/kasan/common.c:48 [inline]
kasan_save_track+0x4f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4328 [inline]
__kvmalloc_node_noprof+0x30d/0x5f0 mm/slub.c:5015
__bch2_darray_resize_noprof+0xd7/0x290 fs/bcachefs/darray.c:24
bch2_save_backtrace+0x26f/0x2a0 fs/bcachefs/util.c:298
btree_trans_restart_ip fs/bcachefs/btree_iter.h:364 [inline]
__bch2_trans_kmalloc+0x5d7/0xc80 fs/bcachefs/btree_iter.c:3216
bch2_trans_kmalloc_nomemzero_ip fs/bcachefs/btree_iter.h:586 [inline]
bch2_trans_kmalloc_nomemzero fs/bcachefs/btree_iter.h:621 [inline]
__bch2_trans_subbuf_alloc+0x2da/0x460 fs/bcachefs/btree_update.c:557
bch2_trans_subbuf_alloc fs/bcachefs/btree_update.h:148 [inline]
bch2_disk_accounting_mod+0x9d5/0x1160 fs/bcachefs/disk_accounting.c:128
bch2_dev_data_type_accounting_mod fs/bcachefs/alloc_background.c:812 [inline]
bch2_alloc_key_to_dev_counters+0x7fc/0x1060 fs/bcachefs/alloc_background.c:828
bch2_trigger_alloc+0x1eb7/0x4090 fs/bcachefs/alloc_background.c:944
run_one_trans_trigger fs/bcachefs/btree_trans_commit.c:-1 [inline]
bch2_trans_commit_run_triggers fs/bcachefs/btree_trans_commit.c:554 [inline]
__bch2_trans_commit+0xa69/0x8880 fs/bcachefs/btree_trans_commit.c:1019
bch2_trans_commit fs/bcachefs/btree_update.h:242 [inline]
btree_update_nodes_written fs/bcachefs/btree_update_interior.c:729 [inline]
btree_interior_update_work+0x1082/0x27d0 fs/bcachefs/btree_update_interior.c:867
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
Memory state around the buggy address:
ffff88805589ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88805589ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8880558a0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880558a0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880558a0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================