ci2 starts bisection 2023-10-08 14:18:43.786690649 +0000 UTC m=+119911.066451263 bisecting fixing commit since fa74641fb6b93a19ccb50579886ecc98320230f9 building syzkaller on 4bce1a3e705a8b62de8194bdb28f5eef89c8feec ensuring issue is reproducible on original commit fa74641fb6b93a19ccb50579886ecc98320230f9 testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 89c5474f2338cc323cf9aff6bf4219cfd2b576ac18ef91dccce173d5cb68c33b run #0: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #10: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #11: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #12: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #13: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #14: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #15: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #16: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #17: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #18: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #19: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 55975035a2459c367868a45f0040dcc9f2d454decfaa0c0060a877615080f76e run #0: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc00876f720 0xc00876f810 0xc00876f8b0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #1: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc00876f950 0xc00876fa40 0xc00876fae0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #2: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc000adae10 0xc000adaf50 0xc000adaff0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #3: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc000a55270 0xc000a55360 0xc000a55400] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #4: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc000a554a0 0xc000a55590 0xc000a55630] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=3820 full=7524 leaves diff=1994 split chunks (needed=false): <1994> split chunk #0 of len 1994 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a094faaba3e4307ce458eb655b45c86c3648c25f073f88e6b432350333041bfa run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock representative crash: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7ea30ffbd85cc76d99329037c17d351c6ca517a2293f88890bbd68802a190382 run #0: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 45a7f9649e40a04a8579bfb0a2d28a882e6acc1791fc5be00b5acce866b296ab run #0: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc006161220 0xc006161310 0xc0061613b0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #1: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c93b4e48c0f0d96665f12a711076a9428caded8d13187f7e3e7d7db2c803c712 run #0: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit fa74641fb6b93a19ccb50579886ecc98320230f9 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5a31c31e136ed3e43f518f6c201faf75a49fcfd23dd277f947493473178e991d run #0: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc002b79130 0xc002b79220 0xc002b792c0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #1: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc004c7fd60 0xc004c7fe50 0xc004c7fef0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #2: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc006783180 0xc0067832c0 0xc0067833b0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #3: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc002b793b0 0xc002b794a0 0xc002b79540] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #4: infra problem: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS ErrorDetails:[0xc002b79770 0xc002b79860 0xc002b799f0] Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] the chunk can be dropped disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing current HEAD ecda77b46871007ab0e6c671fe9df5795dd8154a testing commit ecda77b46871007ab0e6c671fe9df5795dd8154a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a7e184559b0942c9263c0122e1774b0534475236e6966860650ba707cf394114 run #0: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #1: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #2: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #3: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #4: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #5: crashed: KASAN: use-after-free Read in ext4_convert_inline_data_nolock run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_convert_inline_data_nolock representative crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock, types: [KASAN] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 1h12m21.691918374s (build: 31m16.65155669s, test: 38m26.011648964s) crash still not fixed or there were kernel test errors commit msg: Linux 6.1.56 crash: KASAN: use-after-free Read in ext4_convert_inline_data_nolock loop0: detected capacity change from 0 to 2048 EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. ================================================================== BUG: KASAN: use-after-free in ext4_read_inline_data fs/ext4/inline.c:210 [inline] BUG: KASAN: use-after-free in ext4_convert_inline_data_nolock+0x282/0xc10 fs/ext4/inline.c:1216 Read of size 20 at addr ffff88811abba1a3 by task syz-executor.0/1509 CPU: 0 PID: 1509 Comm: syz-executor.0 Not tainted 6.1.56-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xf4/0x251 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 memcpy+0x25/0x60 mm/kasan/shadow.c:65 ext4_read_inline_data fs/ext4/inline.c:210 [inline] ext4_convert_inline_data_nolock+0x282/0xc10 fs/ext4/inline.c:1216 ext4_convert_inline_data+0x3b8/0x4d0 fs/ext4/inline.c:2077 ext4_fallocate+0x136/0x1790 fs/ext4/extents.c:4702 vfs_fallocate+0x30c/0x3d0 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xa6/0xd0 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fae31d77959 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fae318fa0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fae31e96f80 RCX: 00007fae31d77959 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007fae31dd3c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007fae31e96f80 R15: 00007ffce0cda498 Allocated by task 1440: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:955 [inline] __kmalloc_node+0xa9/0x1c0 mm/slab_common.c:962 kmalloc_node include/linux/slab.h:579 [inline] kvmalloc_node+0x3e/0xe0 mm/util.c:581 kvmalloc include/linux/slab.h:706 [inline] seq_buf_alloc fs/seq_file.c:38 [inline] seq_read_iter+0x1ac/0xbd0 fs/seq_file.c:210 proc_reg_read_iter+0x104/0x1e0 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:2199 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x780/0x9a0 fs/read_write.c:470 ksys_read+0x15f/0x240 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 1440: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0x122/0x1e0 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x2b4/0x470 mm/slub.c:3674 seq_release fs/seq_file.c:355 [inline] single_release+0x71/0x90 fs/seq_file.c:614 close_pdeo+0x1c5/0x370 fs/proc/inode.c:248 proc_reg_release+0x117/0x150 fs/proc/inode.c:570 __fput+0x326/0x700 fs/file_table.c:320 task_work_run+0x206/0x280 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xa9/0xc0 kernel/entry/common.c:171 exit_to_user_mode_prepare+0x64/0xb0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x27/0x1c0 kernel/entry/common.c:297 do_syscall_64+0x49/0x80 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88811abba000 which belongs to the cache kmalloc-cg-4k of size 4096 The buggy address is located 419 bytes inside of 4096-byte region [ffff88811abba000, ffff88811abbb000) The buggy address belongs to the physical page: page:ffffea00046aee00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11abb8 head:ffffea00046aee00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 ffffea00045ff600 dead000000000003 ffff88810004c280 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 368, tgid 368 (udevd), ts 5033290423, free_ts 0 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x286/0x2b0 mm/page_alloc.c:2533 prep_new_page mm/page_alloc.c:2540 [inline] get_page_from_freelist+0x2c71/0x2eb0 mm/page_alloc.c:4292 __alloc_pages+0x251/0x640 mm/page_alloc.c:5559 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x70/0x250 mm/slub.c:1992 ___slab_alloc+0x9df/0xe70 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x195/0x250 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc_node+0x98/0x1c0 mm/slab_common.c:962 kmalloc_node include/linux/slab.h:579 [inline] kvmalloc_node+0x3e/0xe0 mm/util.c:581 kvmalloc include/linux/slab.h:706 [inline] seq_buf_alloc fs/seq_file.c:38 [inline] seq_read_iter+0x1ac/0xbd0 fs/seq_file.c:210 call_read_iter include/linux/fs.h:2199 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x780/0x9a0 fs/read_write.c:470 ksys_read+0x15f/0x240 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd page_owner free stack trace missing Memory state around the buggy address: ffff88811abba080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811abba100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88811abba180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88811abba200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811abba280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================