[v5.15] KASAN: use-after-free Read in __pagevec_lru_add
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syzbot
Jul 4, 2025, 5:33:31 AM7/4/25
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 3dea0e7f549e Linux 5.15.186
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=134bbebc580000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe91feccd8127a59
dashboard link: https://syzkaller.appspot.com/bug?extid=271f4510c84ffa32cc1c
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/e8db6cfea7ea/disk-3dea0e7f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/eeb133c8268e/vmlinux-3dea0e7f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9478525201a1/Image-3dea0e7f.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+271f45...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in arch_test_bit include/asm-generic/bitops/non-atomic.h:118 [inline]
BUG: KASAN: use-after-free in mapping_unevictable include/linux/pagemap.h:85 [inline]
BUG: KASAN: use-after-free in page_evictable mm/internal.h:102 [inline]
BUG: KASAN: use-after-free in __pagevec_lru_add_fn mm/swap.c:1024 [inline]
BUG: KASAN: use-after-free in __pagevec_lru_add+0x4fc/0x15d4 mm/swap.c:1052
Read of size 8 at addr ffff0000d87b8ef0 by task syz.6.949/8022
CPU: 0 PID: 8022 Comm: syz.6.949 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
__dump_stack+0x30/0x40 lib/dump_stack.c:88
dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
print_address_description+0x78/0x30c mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0xec/0x15c mm/kasan/report.c:451
__asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309
arch_test_bit include/asm-generic/bitops/non-atomic.h:118 [inline]
mapping_unevictable include/linux/pagemap.h:85 [inline]
page_evictable mm/internal.h:102 [inline]
__pagevec_lru_add_fn mm/swap.c:1024 [inline]
__pagevec_lru_add+0x4fc/0x15d4 mm/swap.c:1052
lru_add_drain_cpu+0xb8/0x5a8 mm/swap.c:597
lru_add_drain+0x8c/0x164 mm/swap.c:701
exit_mmap+0x288/0x4e0 mm/mmap.c:3207
__mmput+0xec/0x3b8 kernel/fork.c:1127
mmput+0x80/0xc8 kernel/fork.c:1148
exit_mm+0x4a0/0x684 kernel/exit.c:550
do_exit+0x4ec/0x1f58 kernel/exit.c:870
do_group_exit+0x100/0x268 kernel/exit.c:997
get_signal+0x73c/0x1340 kernel/signal.c:2900
do_signal arch/arm64/kernel/signal.c:893 [inline]
do_notify_resume+0x35c/0x3128 arch/arm64/kernel/signal.c:946
prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Allocated by task 8004:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x8c/0xcc mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x74/0x408 mm/slab.h:519
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0x1e0/0x3e4 mm/slub.c:3233
gfs2_glock_get+0x1c0/0xb3c fs/gfs2/glock.c:1133
gfs2_inode_lookup+0x284/0xb64 fs/gfs2/inode.c:149
gfs2_dir_search+0x148/0x204 fs/gfs2/dir.c:1665
gfs2_lookupi+0x3bc/0x530 fs/gfs2/inode.c:332
gfs2_jindex_hold fs/gfs2/ops_fstype.c:612 [inline]
init_journal+0x47c/0x1d7c fs/gfs2/ops_fstype.c:756
init_inodes+0xe0/0x2d4 fs/gfs2/ops_fstype.c:891
gfs2_fill_super+0x121c/0x19e0 fs/gfs2/ops_fstype.c:1249
get_tree_bdev+0x358/0x544 fs/super.c:1325
gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x90/0x274 fs/super.c:1530
do_new_mount+0x228/0x810 fs/namespace.c:3014
path_mount+0x5b4/0x1000 fs/namespace.c:3344
do_mount fs/namespace.c:3357 [inline]
__do_sys_mount fs/namespace.c:3565 [inline]
__se_sys_mount fs/namespace.c:3542 [inline]
__arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3542
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Freed by task 8013:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4c/0x84 mm/kasan/common.c:46
kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360
____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366
__kasan_slab_free+0x18/0x28 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook+0x128/0x1e8 mm/slub.c:1731
slab_free mm/slub.c:3499 [inline]
kmem_cache_free+0xdc/0x3b4 mm/slub.c:3515
gfs2_glock_dealloc+0xc0/0xd4 fs/gfs2/glock.c:-1
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x7c8/0x1764 kernel/rcu/tree.c:2763
rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2776
handle_softirqs+0x344/0xbf0 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
invoke_softirq kernel/softirq.c:457 [inline]
__irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
irq_exit+0x14/0x88 kernel/softirq.c:683
handle_domain_irq+0x14c/0x1fc kernel/irq/irqdesc.c:711
gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:765
Last potentially related work creation:
kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
kasan_record_aux_stack+0xcc/0x114 mm/kasan/generic.c:348
__call_rcu kernel/rcu/tree.c:3007 [inline]
call_rcu+0x110/0x8f0 kernel/rcu/tree.c:3087
gfs2_glock_free+0x910/0xc48 fs/gfs2/glock.c:171
__gfs2_glock_put+0x244/0x4a0 fs/gfs2/glock.c:285
gfs2_glock_put+0x48/0x58 fs/gfs2/glock.c:307
gfs2_glock_put_eventually fs/gfs2/super.c:1159 [inline]
gfs2_evict_inode+0xb20/0xe58 fs/gfs2/super.c:1438
evict+0x3c8/0x810 fs/inode.c:647
iput_final fs/inode.c:1769 [inline]
iput+0x6c4/0x77c fs/inode.c:1795
gfs2_jindex_free+0x2d0/0x380 fs/gfs2/super.c:75
init_journal+0x778/0x1d7c fs/gfs2/ops_fstype.c:873
init_inodes+0xe0/0x2d4 fs/gfs2/ops_fstype.c:891
gfs2_fill_super+0x121c/0x19e0 fs/gfs2/ops_fstype.c:1249
get_tree_bdev+0x358/0x544 fs/super.c:1325
gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x90/0x274 fs/super.c:1530
do_new_mount+0x228/0x810 fs/namespace.c:3014
path_mount+0x5b4/0x1000 fs/namespace.c:3344
do_mount fs/namespace.c:3357 [inline]
__do_sys_mount fs/namespace.c:3565 [inline]
__se_sys_mount fs/namespace.c:3542 [inline]
__arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3542
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Second to last potentially related work creation:
kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
kasan_record_aux_stack+0xcc/0x114 mm/kasan/generic.c:348
insert_work+0x64/0x388 kernel/workqueue.c:1366
__queue_work+0xb30/0x1054 kernel/workqueue.c:1532
__queue_delayed_work kernel/workqueue.c:1679 [inline]
queue_delayed_work_on+0x208/0x324 kernel/workqueue.c:1715
queue_delayed_work include/linux/workqueue.h:527 [inline]
__gfs2_glock_queue_work fs/gfs2/glock.c:251 [inline]
gfs2_glock_queue_work fs/gfs2/glock.c:265 [inline]
do_xmote+0x694/0xf90 fs/gfs2/glock.c:825
run_queue+0x3fc/0x6c0 fs/gfs2/glock.c:872
glock_work_func+0x208/0x458 fs/gfs2/glock.c:1039
process_one_work+0x79c/0x1140 kernel/workqueue.c:2310
worker_thread+0x8f4/0x101c kernel/workqueue.c:2457
kthread+0x374/0x454 kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:855
The buggy address belongs to the object at ffff0000d87b8a90
which belongs to the cache gfs2_glock(aspace) of size 1224
The buggy address is located 1120 bytes inside of
1224-byte region [ffff0000d87b8a90, ffff0000d87b8f58)
The buggy address belongs to the page:
page:000000005a721ec6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1187b8
head:000000005a721ec6 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c68cdc80
raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000d87b8d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000d87b8e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000d87b8e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff0000d87b8f00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc
ffff0000d87b8f80: fc fc fc fc fc fc fc fc fc fc fc fa fb fb fb fb
==================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
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If the report is already addressed, let syzbot know by replying with:
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If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 3dea0e7f549e Linux 5.15.186
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=134bbebc580000
kernel config: https://syzkaller.appspot.com/x/.config?x=fe91feccd8127a59
dashboard link: https://syzkaller.appspot.com/bug?extid=271f4510c84ffa32cc1c
compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/e8db6cfea7ea/disk-3dea0e7f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/eeb133c8268e/vmlinux-3dea0e7f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9478525201a1/Image-3dea0e7f.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+271f45...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: use-after-free in arch_test_bit include/asm-generic/bitops/non-atomic.h:118 [inline]
BUG: KASAN: use-after-free in mapping_unevictable include/linux/pagemap.h:85 [inline]
BUG: KASAN: use-after-free in page_evictable mm/internal.h:102 [inline]
BUG: KASAN: use-after-free in __pagevec_lru_add_fn mm/swap.c:1024 [inline]
BUG: KASAN: use-after-free in __pagevec_lru_add+0x4fc/0x15d4 mm/swap.c:1052
Read of size 8 at addr ffff0000d87b8ef0 by task syz.6.949/8022
CPU: 0 PID: 8022 Comm: syz.6.949 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
__dump_stack+0x30/0x40 lib/dump_stack.c:88
dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
print_address_description+0x78/0x30c mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0xec/0x15c mm/kasan/report.c:451
__asan_report_load8_noabort+0x44/0x50 mm/kasan/report_generic.c:309
arch_test_bit include/asm-generic/bitops/non-atomic.h:118 [inline]
mapping_unevictable include/linux/pagemap.h:85 [inline]
page_evictable mm/internal.h:102 [inline]
__pagevec_lru_add_fn mm/swap.c:1024 [inline]
__pagevec_lru_add+0x4fc/0x15d4 mm/swap.c:1052
lru_add_drain_cpu+0xb8/0x5a8 mm/swap.c:597
lru_add_drain+0x8c/0x164 mm/swap.c:701
exit_mmap+0x288/0x4e0 mm/mmap.c:3207
__mmput+0xec/0x3b8 kernel/fork.c:1127
mmput+0x80/0xc8 kernel/fork.c:1148
exit_mm+0x4a0/0x684 kernel/exit.c:550
do_exit+0x4ec/0x1f58 kernel/exit.c:870
do_group_exit+0x100/0x268 kernel/exit.c:997
get_signal+0x73c/0x1340 kernel/signal.c:2900
do_signal arch/arm64/kernel/signal.c:893 [inline]
do_notify_resume+0x35c/0x3128 arch/arm64/kernel/signal.c:946
prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Allocated by task 8004:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
__kasan_slab_alloc+0x8c/0xcc mm/kasan/common.c:467
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x74/0x408 mm/slab.h:519
slab_alloc_node mm/slub.c:3220 [inline]
slab_alloc mm/slub.c:3228 [inline]
kmem_cache_alloc+0x1e0/0x3e4 mm/slub.c:3233
gfs2_glock_get+0x1c0/0xb3c fs/gfs2/glock.c:1133
gfs2_inode_lookup+0x284/0xb64 fs/gfs2/inode.c:149
gfs2_dir_search+0x148/0x204 fs/gfs2/dir.c:1665
gfs2_lookupi+0x3bc/0x530 fs/gfs2/inode.c:332
gfs2_jindex_hold fs/gfs2/ops_fstype.c:612 [inline]
init_journal+0x47c/0x1d7c fs/gfs2/ops_fstype.c:756
init_inodes+0xe0/0x2d4 fs/gfs2/ops_fstype.c:891
gfs2_fill_super+0x121c/0x19e0 fs/gfs2/ops_fstype.c:1249
get_tree_bdev+0x358/0x544 fs/super.c:1325
gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x90/0x274 fs/super.c:1530
do_new_mount+0x228/0x810 fs/namespace.c:3014
path_mount+0x5b4/0x1000 fs/namespace.c:3344
do_mount fs/namespace.c:3357 [inline]
__do_sys_mount fs/namespace.c:3565 [inline]
__se_sys_mount fs/namespace.c:3542 [inline]
__arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3542
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Freed by task 8013:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4c/0x84 mm/kasan/common.c:46
kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360
____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366
__kasan_slab_free+0x18/0x28 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1705 [inline]
slab_free_freelist_hook+0x128/0x1e8 mm/slub.c:1731
slab_free mm/slub.c:3499 [inline]
kmem_cache_free+0xdc/0x3b4 mm/slub.c:3515
gfs2_glock_dealloc+0xc0/0xd4 fs/gfs2/glock.c:-1
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x7c8/0x1764 kernel/rcu/tree.c:2763
rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2776
handle_softirqs+0x344/0xbf0 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
invoke_softirq kernel/softirq.c:457 [inline]
__irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
irq_exit+0x14/0x88 kernel/softirq.c:683
handle_domain_irq+0x14c/0x1fc kernel/irq/irqdesc.c:711
gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:765
Last potentially related work creation:
kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
kasan_record_aux_stack+0xcc/0x114 mm/kasan/generic.c:348
__call_rcu kernel/rcu/tree.c:3007 [inline]
call_rcu+0x110/0x8f0 kernel/rcu/tree.c:3087
gfs2_glock_free+0x910/0xc48 fs/gfs2/glock.c:171
__gfs2_glock_put+0x244/0x4a0 fs/gfs2/glock.c:285
gfs2_glock_put+0x48/0x58 fs/gfs2/glock.c:307
gfs2_glock_put_eventually fs/gfs2/super.c:1159 [inline]
gfs2_evict_inode+0xb20/0xe58 fs/gfs2/super.c:1438
evict+0x3c8/0x810 fs/inode.c:647
iput_final fs/inode.c:1769 [inline]
iput+0x6c4/0x77c fs/inode.c:1795
gfs2_jindex_free+0x2d0/0x380 fs/gfs2/super.c:75
init_journal+0x778/0x1d7c fs/gfs2/ops_fstype.c:873
init_inodes+0xe0/0x2d4 fs/gfs2/ops_fstype.c:891
gfs2_fill_super+0x121c/0x19e0 fs/gfs2/ops_fstype.c:1249
get_tree_bdev+0x358/0x544 fs/super.c:1325
gfs2_get_tree+0x54/0x1b4 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x90/0x274 fs/super.c:1530
do_new_mount+0x228/0x810 fs/namespace.c:3014
path_mount+0x5b4/0x1000 fs/namespace.c:3344
do_mount fs/namespace.c:3357 [inline]
__do_sys_mount fs/namespace.c:3565 [inline]
__se_sys_mount fs/namespace.c:3542 [inline]
__arm64_sys_mount+0x514/0x5e4 fs/namespace.c:3542
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Second to last potentially related work creation:
kasan_save_stack+0x38/0x68 mm/kasan/common.c:38
kasan_record_aux_stack+0xcc/0x114 mm/kasan/generic.c:348
insert_work+0x64/0x388 kernel/workqueue.c:1366
__queue_work+0xb30/0x1054 kernel/workqueue.c:1532
__queue_delayed_work kernel/workqueue.c:1679 [inline]
queue_delayed_work_on+0x208/0x324 kernel/workqueue.c:1715
queue_delayed_work include/linux/workqueue.h:527 [inline]
__gfs2_glock_queue_work fs/gfs2/glock.c:251 [inline]
gfs2_glock_queue_work fs/gfs2/glock.c:265 [inline]
do_xmote+0x694/0xf90 fs/gfs2/glock.c:825
run_queue+0x3fc/0x6c0 fs/gfs2/glock.c:872
glock_work_func+0x208/0x458 fs/gfs2/glock.c:1039
process_one_work+0x79c/0x1140 kernel/workqueue.c:2310
worker_thread+0x8f4/0x101c kernel/workqueue.c:2457
kthread+0x374/0x454 kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:855
The buggy address belongs to the object at ffff0000d87b8a90
which belongs to the cache gfs2_glock(aspace) of size 1224
The buggy address is located 1120 bytes inside of
1224-byte region [ffff0000d87b8a90, ffff0000d87b8f58)
The buggy address belongs to the page:
page:000000005a721ec6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1187b8
head:000000005a721ec6 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c68cdc80
raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000d87b8d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000d87b8e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000d87b8e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff0000d87b8f00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc
ffff0000d87b8f80: fc fc fc fc fc fc fc fc fc fc fc fa fb fb fb fb
==================================================================
---
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syzbot
Oct 12, 2025, 5:33:14 AM10/12/25
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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