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KASAN: use-after-free Read in f2fs_truncate_data_blocks_range

Status: upstream: reported C repro on 2023/05/12 18:24
Reported-by: syzbot+a25d487235b67769a5f7@syzkaller.appspotmail.com
First crash: 1134d, last: 25d
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range origin:lts 19 C error 4 91d 295d 0/2 upstream: reported C repro on 2025/08/28 23:47
android-54 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range 19 C 3 420d 1135d 0/2 upstream: reported C repro on 2023/05/12 11:37
android-6-1 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range origin:upstream missing-backport 19 C error error 5 46d 1134d 0/2 upstream: reported C repro on 2023/05/12 15:50
upstream KASAN: slab-use-after-free Read in f2fs_truncate_data_blocks_range f2fs 19 C error 1 1094d 1090d 23/29 fixed on 2023/10/12 12:47
upstream KASAN: slab-out-of-bounds Read in f2fs_truncate_data_blocks_range f2fs 17 1 286d 282d 0/29 auto-obsoleted due to no activity on 2025/12/06 05:03
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/06/09 22:47 12m retest repro android13-5.10-lts log
2026/06/09 22:47 1h51m retest repro android13-5.10-lts log
2026/06/09 22:47 1h48m retest repro android13-5.10-lts log
2026/06/09 22:47 15m retest repro android13-5.10-lts log
2026/06/09 22:47 13m retest repro android13-5.10-lts log
2026/03/16 07:12 5m retest repro android13-5.10-lts error
2026/03/16 07:12 5m retest repro android13-5.10-lts error
2026/03/16 07:12 5m retest repro android13-5.10-lts error
2026/03/16 07:12 3m retest repro android13-5.10-lts error
2026/01/05 05:54 5m retest repro android13-5.10-lts report log
▶ ▼ Fix bisection attempts (11)
Created Duration User Patch Repo Result
2024/05/30 14:01 6m bisect fix android13-5.10-lts error job log
2024/04/27 20:53 2h03m bisect fix android13-5.10-lts OK (0) job log log
2024/03/27 10:07 1h12m bisect fix android13-5.10-lts OK (0) job log log
2024/02/26 04:48 37m bisect fix android13-5.10-lts OK (0) job log log
2024/01/20 13:22 43m bisect fix android13-5.10-lts OK (0) job log log
2023/12/20 22:00 41m bisect fix android13-5.10-lts OK (0) job log log
2023/11/20 15:28 1h08m bisect fix android13-5.10-lts OK (0) job log log
2023/10/21 04:29 40m bisect fix android13-5.10-lts OK (0) job log log
2023/09/20 01:23 51m bisect fix android13-5.10-lts OK (0) job log log
2023/07/16 17:03 1h02m bisect fix android13-5.10-lts OK (0) job log log
2023/06/12 02:23 15m bisect fix android13-5.10-lts OK (0) job log log

Sample crash report:
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
==================================================================
BUG: KASAN: use-after-free in f2fs_truncate_data_blocks_range+0x829/0xec0 fs/f2fs/file.c:639
Read of size 4 at addr ffff88811107f000 by task syz.2.17/393

CPU: 0 PID: 393 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0xe2/0x130 mm/kasan/report.c:452
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 f2fs_truncate_data_blocks_range+0x829/0xec0 fs/f2fs/file.c:639
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80

Allocated by task 15:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:430 [inline]
 ____kasan_kmalloc mm/kasan/common.c:509 [inline]
 __kasan_kmalloc+0xda/0x110 mm/kasan/common.c:518
 kasan_kmalloc include/linux/kasan.h:254 [inline]
 kmem_cache_alloc_trace+0x181/0x2e0 mm/slub.c:2979
 kmalloc include/linux/slab.h:555 [inline]
 dst_cow_metrics_generic+0x55/0x1c0 net/core/dst.c:208
 dst_metrics_write_ptr include/net/dst.h:118 [inline]
 dst_metric_set include/net/dst.h:179 [inline]
 icmp6_dst_alloc+0x36a/0x560 net/ipv6/route.c:3183
 ndisc_send_skb+0x293/0xbe0 net/ipv6/ndisc.c:493
 ndisc_send_rs+0x6e5/0x960 net/ipv6/ndisc.c:707
 addrconf_dad_completed+0x943/0xe20 net/ipv6/addrconf.c:4287
 addrconf_dad_work+0xc42/0x1440 net/ipv6/addrconf.c:-1
 process_one_work+0x6e1/0xba0 kernel/workqueue.c:2301
 worker_thread+0xa6a/0x13c0 kernel/workqueue.c:2447
 kthread+0x346/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Freed by task 76:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1600 [inline]
 slab_free_freelist_hook+0xc5/0x190 mm/slub.c:1626
 slab_free mm/slub.c:3208 [inline]
 kfree+0xc0/0x270 mm/slub.c:4196
 ip_dst_metrics_put include/net/ip.h:513 [inline]
 ip6_dst_destroy+0x9f/0x420 net/ipv6/route.c:358
 dst_destroy+0xc3/0x240 net/core/dst.c:117
 dst_destroy_rcu+0x19/0x20 net/core/dst.c:139
 rcu_do_batch+0x4ef/0xab0 kernel/rcu/tree.c:2494
 rcu_core+0x577/0xd80 kernel/rcu/tree.c:2735
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2748
 __do_softirq+0x255/0x563 kernel/softirq.c:309

The buggy address belongs to the object at ffff88811107f000
 which belongs to the cache kmalloc-96 of size 96
The buggy address is located 0 bytes inside of
 96-byte region [ffff88811107f000, ffff88811107f060)
The buggy address belongs to the page:
page:ffffea0004441fc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11107f
flags: 0x4000000000000200(slab)
raw: 4000000000000200 dead000000000100 dead000000000122 ffff888100043680
raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 15, ts 28859848126, free_ts 28468373327
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x179/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x223b/0x23d0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x290/0x620 mm/page_alloc.c:5384
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1813 [inline]
 new_slab+0x84/0x3f0 mm/slub.c:1874
 new_slab_objects mm/slub.c:2632 [inline]
 ___slab_alloc+0x2a6/0x450 mm/slub.c:2796
 __slab_alloc+0x63/0xa0 mm/slub.c:2836
 slab_alloc_node mm/slub.c:2918 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 kmem_cache_alloc_trace+0x1b0/0x2e0 mm/slub.c:2977
 kmalloc include/linux/slab.h:555 [inline]
 dst_cow_metrics_generic+0x55/0x1c0 net/core/dst.c:208
 dst_metrics_write_ptr include/net/dst.h:118 [inline]
 dst_metric_set include/net/dst.h:179 [inline]
 icmp6_dst_alloc+0x36a/0x560 net/ipv6/route.c:3183
 ndisc_send_skb+0x293/0xbe0 net/ipv6/ndisc.c:493
 ndisc_send_rs+0x6e5/0x960 net/ipv6/ndisc.c:707
 addrconf_dad_completed+0x943/0xe20 net/ipv6/addrconf.c:4287
 addrconf_dad_work+0xc42/0x1440 net/ipv6/addrconf.c:-1
 process_one_work+0x6e1/0xba0 kernel/workqueue.c:2301
 worker_thread+0xa6a/0x13c0 kernel/workqueue.c:2447
 kthread+0x346/0x3d0 kernel/kthread.c:313
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1349 [inline]
 free_pcp_prepare mm/page_alloc.c:1421 [inline]
 free_unref_page_prepare+0x2b7/0x2d0 mm/page_alloc.c:3336
 free_unref_page_list+0x129/0x9c0 mm/page_alloc.c:3443
 release_pages+0xe52/0xea0 mm/swap.c:1103
 __pagevec_release+0x71/0xe0 mm/swap.c:1123
 pagevec_release include/linux/pagevec.h:88 [inline]
 truncate_inode_pages_range+0x819/0x16d0 mm/truncate.c:367
 truncate_inode_pages+0x24/0x30 mm/truncate.c:473
 kill_bdev fs/block_dev.c:86 [inline]
 __blkdev_put+0x337/0x7c0 fs/block_dev.c:1795
 blkdev_put+0x2d6/0x3c0 fs/block_dev.c:1863
 blkdev_close+0x76/0xa0 fs/block_dev.c:1870
 __fput+0x2fb/0x770 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56

Memory state around the buggy address:
 ffff88811107ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88811107ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88811107f000: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
                   ^
 ffff88811107f080: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff88811107f100: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
==================================================================
F2FS-fs (loop2): access invalid blkaddr:285412800
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 0 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:76
CPU: 0 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:3942645984
CPU: 0 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:15
CPU: 0 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:3122659602
CPU: 0 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:285412480
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:76
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:3942645984
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:15
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:3122659602
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:287529792
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:76
CPU: 1 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): access invalid blkaddr:3942645984
CPU: 0 PID: 393 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x1a7/0x208 lib/dump_stack.c:118
 dump_stack+0x15/0x1c lib/dump_stack.c:135
 f2fs_is_valid_blkaddr+0xc8c/0x1360 fs/f2fs/checkpoint.c:205
 f2fs_truncate_data_blocks_range+0x67f/0xec0 fs/f2fs/file.c:657
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:696
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x658/0xfe0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x72a/0xa10 fs/f2fs/file.c:785
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:813
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:865
 f2fs_evict_inode+0x697/0x14e0 fs/f2fs/inode.c:799
 evict+0x4ae/0x930 fs/inode.c:612
 iput_final fs/inode.c:1736 [inline]
 iput+0x638/0x7c0 fs/inode.c:1762
 f2fs_fill_super+0x5c30/0x73f0 fs/f2fs/super.c:4366
 mount_bdev+0x28b/0x3a0 fs/super.c:1442
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598
 legacy_get_tree+0xed/0x190 fs/fs_context.c:593
 vfs_get_tree+0x89/0x260 fs/super.c:1572
 do_new_mount+0x25a/0xa20 fs/namespace.c:3006
 path_mount+0x585/0xc90 fs/namespace.c:3336
 do_mount fs/namespace.c:3349 [inline]
 __do_sys_mount fs/namespace.c:3557 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3534
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcfd2f970ca
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe997bde88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe997bdf10 RCX: 00007fcfd2f970ca
RDX: 0000200000000140 RSI: 0000200000000300 RDI: 00007ffe997bded0
RBP: 0000200000000140 R08: 00007ffe997bdf10 R09: 00000000000004c2
R10: 00000000000004c2 R11: 0000000000000246 R12: 0000200000000300
R13: 00007ffe997bded0 R14: 0000000000005541 R15: 0000200000000a80
F2FS-fs (loop2): dec_valid_node_count: inconsistent i_blocks, ino:3, iblocks:0

Crashes (10):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/25 15:47 android13-5.10-lts f5a34916f66d c69befb3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/10/12 01:36 android13-5.10-lts 2ece552169c2 ff1712fe .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/10/12 01:17 android13-5.10-lts 2ece552169c2 ff1712fe .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/07/28 00:17 android13-5.10-lts ad9a98ef27a4 fb8f743d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2023/05/12 18:24 android13-5.10-lts 43c801dc3325 ecca8a24 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-10 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2026/05/25 15:24 android13-5.10-lts f5a34916f66d c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/12/05 08:51 android13-5.10-lts 9286af17ed5f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/10/31 17:19 android13-5.10-lts ab3e1c0dd1ff 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Read in f2fs_truncate_data_blocks_range
2025/07/27 23:57 android13-5.10-lts ad9a98ef27a4 fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: slab-out-of-bounds Read in f2fs_truncate_data_blocks_range
2025/07/27 23:56 android13-5.10-lts ad9a98ef27a4 fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: slab-out-of-bounds Read in f2fs_truncate_data_blocks_range
* Struck through repros no longer work on HEAD.