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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: 886d, last: 3d09h
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 3 27d 47d 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 172d 886d 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 2 21d 886d 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 846d 842d 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 38d 34d 0/29 moderation: reported on 2025/09/11 05:05
▶ ▼ Last patch testing requests (7)
Created Duration User Patch Repo Result
2025/08/11 10:08 5m retest repro android13-5.10-lts report log
2025/08/11 10:08 5m retest repro android13-5.10-lts report log
2025/05/19 08:59 13m retest repro android13-5.10-lts report log
2025/03/09 02:20 6m retest repro android13-5.10-lts report log
2024/12/28 17:32 1h02m retest repro android13-5.10-lts report log
2024/10/19 11:00 52m retest repro android13-5.10-lts report log
2024/08/08 21:22 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:
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
==================================================================
BUG: KASAN: use-after-free in f2fs_truncate_data_blocks_range+0x829/0xec0 fs/f2fs/file.c:599
Read of size 4 at addr ffff88810fba0000 by task syz.2.17/384

CPU: 0 PID: 384 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:599
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003

The buggy address belongs to the page:
page:ffffea00043ee800 refcount:0 mapcount:-128 mapping:0000000000000000 index:0xffff88810fba6600 pfn:0x10fba0
flags: 0x4000000000000000()
raw: 4000000000000000 ffffea00043ea008 ffffea00043fa008 0000000000000000
raw: ffff88810fba6600 0000000000000005 00000000ffffff7f 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 101, ts 5263826649, free_ts 27011759046
 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+0x2235/0x23d0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x268/0x5f0 mm/page_alloc.c:5370
 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+0x1af/0x2e0 mm/slub.c:2965
 getname_flags+0xb9/0x500 fs/namei.c:141
 getname fs/namei.c:212 [inline]
 __do_sys_unlink fs/namei.c:4082 [inline]
 __se_sys_unlink fs/namei.c:4080 [inline]
 __x64_sys_unlink+0x3c/0x50 fs/namei.c:4080
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
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_pages_ok+0x7fc/0x820 mm/page_alloc.c:1629
 free_the_page mm/page_alloc.c:5431 [inline]
 __free_pages+0xdd/0x380 mm/page_alloc.c:5440
 __free_slab+0xcf/0x190 mm/slub.c:1899
 free_slab mm/slub.c:1914 [inline]
 discard_slab mm/slub.c:1920 [inline]
 unfreeze_partials+0x15f/0x190 mm/slub.c:2415
 put_cpu_partial+0xc1/0x180 mm/slub.c:2451
 __slab_free+0x2c9/0x3a0 mm/slub.c:3100
 do_slab_free mm/slub.c:3196 [inline]
 ___cache_free+0x111/0x130 mm/slub.c:3215
 qlink_free+0x50/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x5f/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x14a/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xf0 mm/kasan/common.c:440
 kasan_slab_alloc include/linux/kasan.h:244 [inline]
 slab_post_alloc_hook+0x5d/0x2f0 mm/slab.h:580
 slab_alloc_node mm/slub.c:2952 [inline]
 slab_alloc mm/slub.c:2960 [inline]
 kmem_cache_alloc_trace+0x160/0x2e0 mm/slub.c:2977
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:664 [inline]
 ____ip_mc_inc_group+0x190/0x820 net/ipv4/igmp.c:1452
 __ip_mc_inc_group net/ipv4/igmp.c:1487 [inline]
 ip_mc_inc_group net/ipv4/igmp.c:1493 [inline]
 ip_mc_up+0x112/0x1f0 net/ipv4/igmp.c:1792
 inetdev_event+0xc13/0x1030 net/ipv4/devinet.c:1587

Memory state around the buggy address:
 ffff88810fb9ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88810fb9ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88810fba0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88810fba0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88810fba0100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
F2FS-fs (loop2): access invalid blkaddr:250539616
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:4294936705
CPU: 0 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:101
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:3040870602
CPU: 0 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:1937339183
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:1937072687
CPU: 0 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:1768124463
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:1769104431
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:1936876918
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:1886611759
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:808859441
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:1986360623
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): access invalid blkaddr:7630437
CPU: 1 PID: 384 Comm: syz.2.17 Tainted: G    B             syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 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:617
 f2fs_truncate_data_blocks+0xf7/0x140 fs/f2fs/file.c:656
 truncate_dnode fs/f2fs/node.c:953 [inline]
 f2fs_truncate_inode_blocks+0x63b/0xfb0 fs/f2fs/node.c:1172
 f2fs_do_truncate_blocks+0x6bc/0x9a0 fs/f2fs/file.c:745
 f2fs_truncate_blocks+0x115/0x310 fs/f2fs/file.c:773
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:825
 f2fs_setattr+0x981/0x1010 fs/f2fs/file.c:996
 notify_change+0xab3/0xe40 fs/attr.c:410
 do_truncate+0x186/0x210 fs/open.c:65
 handle_truncate fs/namei.c:3054 [inline]
 do_open fs/namei.c:3395 [inline]
 path_openat+0x2aab/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_open fs/open.c:1241 [inline]
 __se_sys_open fs/open.c:1237 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1237
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fef5cbf5ec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc63538dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fef5ce4cfa0 RCX: 00007fef5cbf5ec9
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007fef5cc78f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fef5ce4cfa0 R14: 00007fef5ce4cfa0 R15: 0000000000000003
F2FS-fs (loop2): Inconsistent i_blocks, ino:7, iblocks:0, sectors:8
F2FS-fs (loop2): dec_valid_node_count: inconsistent i_blocks, ino:7, iblocks:0

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
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.