R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
==================================================================
BUG: KASAN: use-after-free in f2fs_truncate_data_blocks_range+0x6d5/0xed0 fs/f2fs/file.c:635
Read of size 4 at addr ffff88812c7ea000 by task syz.6.20/427

CPU: 0 PID: 427 Comm: syz.6.20 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:350
 f2fs_truncate_data_blocks_range+0x6d5/0xed0 fs/f2fs/file.c:635
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>

Allocated by task 92:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
 __kasan_slab_alloc+0x72/0x80 mm/kasan/common.c:334
 kasan_slab_alloc include/linux/kasan.h:202 [inline]
 slab_post_alloc_hook+0x4f/0x2d0 mm/slab.h:768
 slab_alloc_node mm/slub.c:3382 [inline]
 kmem_cache_alloc_node+0x181/0x340 mm/slub.c:3429
 __alloc_skb+0xea/0x4b0 net/core/skbuff.c:508
 alloc_skb include/linux/skbuff.h:1290 [inline]
 alloc_skb_with_frags+0xa8/0x620 net/core/skbuff.c:6167
 sock_alloc_send_pskb+0x87f/0x9a0 net/core/sock.c:2761
 unix_dgram_sendmsg+0x539/0x16f0 net/unix/af_unix.c:1947
 sock_sendmsg_nosec net/socket.c:716 [inline]
 __sock_sendmsg net/socket.c:728 [inline]
 __sys_sendto+0x4ac/0x660 net/socket.c:2142
 __do_sys_sendto net/socket.c:2154 [inline]
 __se_sys_sendto net/socket.c:2150 [inline]
 __x64_sys_sendto+0xe5/0x100 net/socket.c:2150
 x64_sys_call+0x83/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 85:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 kmem_cache_free+0x12d/0x300 mm/slub.c:3737
 kfree_skbmem+0x10c/0x180 net/core/skbuff.c:-1
 __kfree_skb net/core/skbuff.c:874 [inline]
 consume_skb+0xb3/0x1f0 net/core/skbuff.c:1038
 skb_free_datagram+0x15/0x20 net/core/datagram.c:322
 __unix_dgram_recvmsg+0xa17/0xdc0 net/unix/af_unix.c:2533
 unix_dgram_recvmsg+0xc7/0xe0 net/unix/af_unix.c:2550
 sock_recvmsg_nosec net/socket.c:1020 [inline]
 sock_recvmsg net/socket.c:1038 [inline]
 sock_read_iter+0x2ef/0x3c0 net/socket.c:1111
 call_read_iter include/linux/fs.h:2276 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x454/0x910 fs/read_write.c:470
 ksys_read+0x149/0x250 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88812c7ea000
 which belongs to the cache skbuff_head_cache of size 256
The buggy address is located 0 bytes inside of
 256-byte region [ffff88812c7ea000, ffff88812c7ea100)

The buggy address belongs to the physical page:
page:ffffea0004b1fa80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12c7ea
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 0000000000000000 dead000000000122 ffff888108884d80
raw: 0000000000000000 00000000000c000c 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 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 92, tgid 92 (klogd), ts 34192402779, free_ts 34164364161
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2670
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2677
 get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4583
 __alloc_pages+0x1d9/0x480 mm/page_alloc.c:5897
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3d0 mm/slub.c:2020
 ___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 kmem_cache_alloc_node+0x1c2/0x340 mm/slub.c:3429
 __alloc_skb+0xea/0x4b0 net/core/skbuff.c:508
 alloc_skb include/linux/skbuff.h:1290 [inline]
 alloc_skb_with_frags+0xa8/0x620 net/core/skbuff.c:6167
 sock_alloc_send_pskb+0x87f/0x9a0 net/core/sock.c:2761
 unix_dgram_sendmsg+0x539/0x16f0 net/unix/af_unix.c:1947
 sock_sendmsg_nosec net/socket.c:716 [inline]
 __sock_sendmsg net/socket.c:728 [inline]
 __sys_sendto+0x4ac/0x660 net/socket.c:2142
 __do_sys_sendto net/socket.c:2154 [inline]
 __se_sys_sendto net/socket.c:2150 [inline]
 __x64_sys_sendto+0xe5/0x100 net/socket.c:2150
 x64_sys_call+0x83/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:45
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1578 [inline]
 free_pcp_prepare mm/page_alloc.c:1652 [inline]
 free_unref_page_prepare+0x742/0x750 mm/page_alloc.c:3618
 free_unref_page_list+0x117/0x8c0 mm/page_alloc.c:3769
 release_pages+0xaf2/0xb50 mm/swap.c:1048
 __pagevec_release+0x71/0xe0 mm/swap.c:1068
 pagevec_release include/linux/pagevec.h:71 [inline]
 folio_batch_release include/linux/pagevec.h:135 [inline]
 invalidate_mapping_pagevec+0x450/0x640 mm/truncate.c:584
 invalidate_mapping_pages+0x27/0x30 mm/truncate.c:608
 f2fs_flush_buffered_write fs/f2fs/file.c:4817 [inline]
 f2fs_file_write_iter+0x7c1/0x2610 fs/f2fs/file.c:5028
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x665/0xb40 fs/read_write.c:861
 vfs_writev+0x339/0x5f0 fs/read_write.c:934
 do_writev+0x14e/0x2c0 fs/read_write.c:977
 __do_sys_writev fs/read_write.c:1050 [inline]
 __se_sys_writev fs/read_write.c:1047 [inline]
 __x64_sys_writev+0x7d/0x90 fs/read_write.c:1047
 x64_sys_call+0xad/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:21
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Memory state around the buggy address:
 ffff88812c7e9f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88812c7e9f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88812c7ea000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88812c7ea080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812c7ea100: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
==================================================================
F2FS-fs (loop6): access invalid blkaddr:768051200
CPU: 1 PID: 427 Comm: syz.6.20 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 __f2fs_is_valid_blkaddr+0xda6/0x1460 fs/f2fs/checkpoint.c:215
 f2fs_is_valid_blkaddr_raw+0x23/0x30 fs/f2fs/checkpoint.c:244
 f2fs_truncate_data_blocks_range+0x5f4/0xed0 fs/f2fs/file.c:654
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
F2FS-fs (loop6): access invalid blkaddr:4294936705
CPU: 1 PID: 427 Comm: syz.6.20 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 __f2fs_is_valid_blkaddr+0xda6/0x1460 fs/f2fs/checkpoint.c:215
 f2fs_is_valid_blkaddr_raw+0x23/0x30 fs/f2fs/checkpoint.c:244
 f2fs_truncate_data_blocks_range+0x5f4/0xed0 fs/f2fs/file.c:654
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
F2FS-fs (loop6): access invalid blkaddr:85
CPU: 0 PID: 427 Comm: syz.6.20 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 __f2fs_is_valid_blkaddr+0xda6/0x1460 fs/f2fs/checkpoint.c:215
 f2fs_is_valid_blkaddr_raw+0x23/0x30 fs/f2fs/checkpoint.c:244
 f2fs_truncate_data_blocks_range+0x5f4/0xed0 fs/f2fs/file.c:654
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
F2FS-fs (loop6): access invalid blkaddr:122355962
CPU: 0 PID: 427 Comm: syz.6.20 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 __f2fs_is_valid_blkaddr+0xda6/0x1460 fs/f2fs/checkpoint.c:215
 f2fs_is_valid_blkaddr_raw+0x23/0x30 fs/f2fs/checkpoint.c:244
 f2fs_truncate_data_blocks_range+0x5f4/0xed0 fs/f2fs/file.c:654
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
F2FS-fs (loop6): access invalid blkaddr:255122944
CPU: 0 PID: 427 Comm: syz.6.20 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 __f2fs_is_valid_blkaddr+0xda6/0x1460 fs/f2fs/checkpoint.c:215
 f2fs_is_valid_blkaddr_raw+0x23/0x30 fs/f2fs/checkpoint.c:244
 f2fs_truncate_data_blocks_range+0x5f4/0xed0 fs/f2fs/file.c:654
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
F2FS-fs (loop6): access invalid blkaddr:4294936705
CPU: 0 PID: 427 Comm: syz.6.20 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 __f2fs_is_valid_blkaddr+0xda6/0x1460 fs/f2fs/checkpoint.c:215
 f2fs_is_valid_blkaddr_raw+0x23/0x30 fs/f2fs/checkpoint.c:244
 f2fs_truncate_data_blocks_range+0x5f4/0xed0 fs/f2fs/file.c:654
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
F2FS-fs (loop6): access invalid blkaddr:74
CPU: 0 PID: 427 Comm: syz.6.20 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 __f2fs_is_valid_blkaddr+0xda6/0x1460 fs/f2fs/checkpoint.c:215
 f2fs_is_valid_blkaddr_raw+0x23/0x30 fs/f2fs/checkpoint.c:244
 f2fs_truncate_data_blocks_range+0x5f4/0xed0 fs/f2fs/file.c:654
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
F2FS-fs (loop6): access invalid blkaddr:2220275712
CPU: 1 PID: 427 Comm: syz.6.20 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 __f2fs_is_valid_blkaddr+0xda6/0x1460 fs/f2fs/checkpoint.c:215
 f2fs_is_valid_blkaddr_raw+0x23/0x30 fs/f2fs/checkpoint.c:244
 f2fs_truncate_data_blocks_range+0x5f4/0xed0 fs/f2fs/file.c:654
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
F2FS-fs (loop6): access invalid blkaddr:100
CPU: 1 PID: 427 Comm: syz.6.20 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 __f2fs_is_valid_blkaddr+0xda6/0x1460 fs/f2fs/checkpoint.c:215
 f2fs_is_valid_blkaddr_raw+0x23/0x30 fs/f2fs/checkpoint.c:244
 f2fs_truncate_data_blocks_range+0x5f4/0xed0 fs/f2fs/file.c:654
 f2fs_truncate_data_blocks+0xf3/0x130 fs/f2fs/file.c:711
 truncate_dnode fs/f2fs/node.c:962 [inline]
 f2fs_truncate_inode_blocks+0x864/0xfb0 fs/f2fs/node.c:1181
 f2fs_do_truncate_blocks+0x76a/0xc70 fs/f2fs/file.c:800
 f2fs_truncate_blocks+0x10e/0x310 fs/f2fs/file.c:828
 f2fs_truncate+0x1d7/0x3d0 fs/f2fs/file.c:878
 f2fs_setattr+0xd07/0x1360 fs/f2fs/file.c:1098
 notify_change+0xcc3/0xf80 fs/attr.c:499
 do_truncate+0x1ac/0x240 fs/open.c:66
 handle_truncate fs/namei.c:3292 [inline]
 do_open fs/namei.c:3637 [inline]
 path_openat+0x28f0/0x2f80 fs/namei.c:3790
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_open fs/open.c:1367 [inline]
 __se_sys_open fs/open.c:1363 [inline]
 __x64_sys_open+0x11c/0x140 fs/open.c:1363
 x64_sys_call+0x97b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:3
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7facce19c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc801238e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007facce415fa0 RCX: 00007facce19c799
RDX: 0000000000000040 RSI: 0000000000141242 RDI: 0000200000000140
RBP: 00007facce232bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007facce415fac R14: 00007facce415fa0 R15: 00007facce415fa0
 </TASK>
F2FS-fs (loop6): access invalid blkaddr:1