Warning: Permanently added '10.128.0.127' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.826205][ T3962] loop0: detected capacity change from 0 to 512 [ 43.830729][ T3962] EXT4-fs (loop0): Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 43.839453][ T3962] EXT4-fs (loop0): 1 truncate cleaned up [ 43.840860][ T3962] EXT4-fs (loop0): mounted filesystem without journal. Opts: inode_readahead_blks=0x0000000000000000,errors=continue,debug_want_extra_isize=0x0000000000000040,dioread_nolock,max_batch_time=0x0000000000000008,nombcache,,errors=continue. Quota mode: writeback. [ 43.852701][ T3962] page:00000000ad07f79d refcount:3 mapcount:0 mapping:0000000014e0aaaf index:0x1 pfn:0x11daa5 [ 43.854791][ T3962] memcg:ffff0000c0894000 [ 43.855696][ T3962] aops:def_blk_aops ino:700000 [ 43.856691][ T3962] flags: 0x5ffc0000000202a(referenced|dirty|active|private|node=0|zone=2|lastcpupid=0x7ff) [ 43.858787][ T3962] raw: 05ffc0000000202a 0000000000000000 dead000000000122 ffff0000c0494f48 [ 43.861145][ T3962] raw: 0000000000000001 ffff0000dc5c7bc8 00000003ffffffff ffff0000c0894000 [ 43.862975][ T3962] page dumped because: VM_BUG_ON_PAGE(!PageCompound(page)) [ 43.864759][ T3962] ------------[ cut here ]------------ [ 43.866011][ T3962] kernel BUG at mm/slub.c:3532! [ 43.867139][ T3962] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 43.868509][ T3962] Modules linked in: [ 43.869412][ T3962] CPU: 1 PID: 3962 Comm: syz-executor400 Not tainted 5.15.111-syzkaller #0 [ 43.871336][ T3962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 [ 43.873567][ T3962] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 43.875142][ T3962] pc : free_nonslab_page+0x1cc/0x1dc [ 43.876450][ T3962] lr : free_nonslab_page+0x1cc/0x1dc [ 43.877590][ T3962] sp : ffff80001c9174f0 [ 43.878531][ T3962] x29: ffff80001c917500 x28: ffff0000c2845100 x27: dfff800000000000 [ 43.880381][ T3962] x26: 0000000000000020 x25: ffff0000ddaa55a4 x24: 0000000000000020 [ 43.882008][ T3962] x23: ffff800016ebf000 x22: 0000000000000000 x21: ffff80000875e5c8 [ 43.883792][ T3962] x20: 0000000000000000 x19: fffffc000376a940 x18: 0000000000000001 [ 43.885533][ T3962] x17: ff808000083359dc x16: ffff800011948074 x15: ffff8000083359dc [ 43.887302][ T3962] x14: 00000000ffffffff x13: ffffffffffffffff x12: 0000000000000000 [ 43.889090][ T3962] x11: ff808000087a5c40 x10: 0000000000000000 x9 : 9183383888344400 [ 43.890744][ T3962] x8 : 9183383888344400 x7 : 0000000000000001 x6 : 0000000000000001 [ 43.892519][ T3962] x5 : ffff80001c916958 x4 : ffff8000149afce0 x3 : ffff80000854d4e0 [ 43.894280][ T3962] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000038 [ 43.896024][ T3962] Call trace: [ 43.896836][ T3962] free_nonslab_page+0x1cc/0x1dc [ 43.897865][ T3962] kfree+0x2ac/0x410 [ 43.898704][ T3962] kvfree+0x40/0x50 [ 43.899655][ T3962] ext4_expand_extra_isize_ea+0xcbc/0x1688 [ 43.900861][ T3962] __ext4_expand_extra_isize+0x290/0x348 [ 43.902025][ T3962] __ext4_mark_inode_dirty+0x4e8/0x924 [ 43.903150][ T3962] __ext4_unlink+0x6d8/0x90c [ 43.904130][ T3962] ext4_unlink+0x1b4/0x6a0 [ 43.905095][ T3962] vfs_unlink+0x2f0/0x508 [ 43.905993][ T3962] do_unlinkat+0x4c8/0x82c [ 43.906895][ T3962] __arm64_sys_unlinkat+0xcc/0xfc [ 43.907903][ T3962] invoke_syscall+0x98/0x2b8 [ 43.908911][ T3962] el0_svc_common+0x138/0x258 [ 43.910101][ T3962] do_el0_svc+0x58/0x14c [ 43.911006][ T3962] el0_svc+0x7c/0x1f0 [ 43.911811][ T3962] el0t_64_sync_handler+0x84/0xe4 [ 43.912957][ T3962] el0t_64_sync+0x1a0/0x1a4 [ 43.913943][ T3962] Code: d005ba81 912d3421 aa1303e0 97fba8b1 (d4210000) [ 43.915497][ T3962] ---[ end trace 193b93c1595d97b2 ]--- [ 44.243035][ T3962] Kernel panic - not syncing: Oops - BUG: Fatal exception [ 44.244683][ T3962] SMP: stopping secondary CPUs [ 44.245819][ T3962] Kernel Offset: disabled [ 44.246663][ T3962] CPU features: 0x000081c1,21302e40 [ 44.247748][ T3962] Memory Limit: none [ 44.575487][ T3962] Rebooting in 86400 seconds..