ci2 starts bisection 2023-02-17 01:18:42.849097789 +0000 UTC m=+12201.344635848 bisecting fixing commit since af7a056891899fd3942afec79fb219f58271e319 building syzkaller on 7ba4d8599e4d96a8c2deb0f5a61cfc75eaeadcd8 ensuring issue is reproducible on original commit af7a056891899fd3942afec79fb219f58271e319 testing commit af7a056891899fd3942afec79fb219f58271e319 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 18a3c1982416c9a3cf571b8fe1e1cc40c7a84f07a5606d7969ee6e56a7b195c6 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #10: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #11: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #12: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #13: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #14: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #15: OK run #16: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #17: OK run #18: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #19: OK testing current HEAD 3ac88fa4605ec98e545fb3ad0154f575fda2de5f testing commit 3ac88fa4605ec98e545fb3ad0154f575fda2de5f gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f44e4bdb69c8f0ee2cfd2a047b404873ad30198fb95d0cc28cec565b235ccdcf run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #5: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #6: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #7: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #8: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas run #9: crashed: KASAN: slab-out-of-bounds Read in ext4_enable_quotas revisions tested: 2, total time: 59m36.468857108s (build: 34m22.17920202s, test: 22m29.42962857s) the crash still happens on HEAD commit msg: Merge tag 'net-6.2-final' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net crash: KASAN: slab-out-of-bounds Read in ext4_enable_quotas ================================================================== BUG: KASAN: slab-out-of-bounds in ext4_enable_quotas+0x5b7/0xd40 Read of size 8 at addr ffff888065455938 by task syz-executor677/32432 CPU: 1 PID: 32432 Comm: syz-executor677 Not tainted 6.2.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: dump_stack_lvl+0x12e/0x1d0 print_report+0x163/0x4c0 kasan_report+0xce/0x100 ext4_enable_quotas+0x5b7/0xd40 ext4_fill_super+0x6e85/0x75e0 get_tree_bdev+0x3d7/0x620 vfs_get_tree+0x7f/0x220 do_new_mount+0x1e5/0x940 __se_sys_mount+0x20d/0x2a0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc53274101a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc5326ea138 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc53274101a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc5326ea180 RBP: 0000000000000004 R08: 00007fc5326ea1c0 R09: 00007fc5326ea1f0 R10: 0000000000000000 R11: 0000000000000202 R12: 00007fc5326ea1c0 R13: 0000000000000029 R14: 00007fc5326ea180 R15: 00000000200005d8 Allocated by task 24460: kasan_set_track+0x40/0x70 __kasan_slab_alloc+0x69/0x80 slab_post_alloc_hook+0x68/0x390 kmem_cache_alloc_lru+0x127/0x270 f2fs_alloc_inode+0x107/0x4b0 iget_locked+0x1a3/0x720 f2fs_iget+0x50/0x4370 f2fs_fill_super+0x586c/0x6d00 mount_bdev+0x27f/0x370 legacy_get_tree+0xe9/0x170 vfs_get_tree+0x7f/0x220 do_new_mount+0x1e5/0x940 __se_sys_mount+0x20d/0x2a0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Last potentially related work creation: kasan_save_stack+0x2f/0x50 __kasan_record_aux_stack+0xb0/0xc0 call_rcu+0x167/0xa70 f2fs_fill_super+0x4b74/0x6d00 mount_bdev+0x27f/0x370 legacy_get_tree+0xe9/0x170 vfs_get_tree+0x7f/0x220 do_new_mount+0x1e5/0x940 __se_sys_mount+0x20d/0x2a0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x2f/0x50 __kasan_record_aux_stack+0xb0/0xc0 call_rcu+0x167/0xa70 f2fs_fill_super+0x4b74/0x6d00 mount_bdev+0x27f/0x370 legacy_get_tree+0xe9/0x170 vfs_get_tree+0x7f/0x220 do_new_mount+0x1e5/0x940 __se_sys_mount+0x20d/0x2a0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888065455070 which belongs to the cache f2fs_inode_cache of size 2160 The buggy address is located 88 bytes to the right of 2160-byte region [ffff888065455070, ffff8880654558e0) The buggy address belongs to the physical page: page:ffffea0001951400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x65450 head:ffffea0001951400 order:3 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 memcg:ffff8880227c2601 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff888019f04a00 ffffea0001ad4200 dead000000000004 raw: 0000000000000000 00000000000e000e 00000001ffffffff ffff8880227c2601 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 23188, tgid 23185 (syz-executor677), ts 438908329586, free_ts 11305361120 get_page_from_freelist+0x3403/0x3580 __alloc_pages+0x291/0x7e0 alloc_slab_page+0x6a/0x160 new_slab+0x84/0x2f0 ___slab_alloc+0xa07/0x1000 kmem_cache_alloc_lru+0x1ad/0x270 f2fs_alloc_inode+0x107/0x4b0 iget_locked+0x1a3/0x720 f2fs_iget+0x50/0x4370 f2fs_fill_super+0x586c/0x6d00 mount_bdev+0x27f/0x370 legacy_get_tree+0xe9/0x170 vfs_get_tree+0x7f/0x220 do_new_mount+0x1e5/0x940 __se_sys_mount+0x20d/0x2a0 do_syscall_64+0x41/0xc0 page last free stack trace: free_unref_page_prepare+0xf3a/0x1040 free_unref_page+0x37/0x3f0 free_contig_range+0x9e/0x150 destroy_args+0xe2/0x760 debug_vm_pgtable+0x3fa/0x450 do_one_initcall+0x1d8/0x730 do_initcall_level+0x125/0x1b0 do_initcalls+0x3e/0x70 kernel_init_freeable+0x37f/0x500 kernel_init+0x18/0x1a0 ret_from_fork+0x1f/0x30 Memory state around the buggy address: ffff888065455800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888065455880: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc >ffff888065455900: fc fc fc fc fc fc fc fc fc fc fc fc 00 00 00 00 ^ ffff888065455980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888065455a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================