program: sendto$inet(0xffffffffffffffff, &(0x7f00000000c0)="8689d46205a34100ff2bbe11a5ce7879edaf02afe39ead95913e9c4f8cf31440006769ebdf12cfacae8e8c03f5db079da7d9", 0x32, 0x0, 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000240)='./file0\x00', 0x40042, 0x1) pipe2$9p(&(0x7f00000001c0)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000280)=ANY=[@ANYBLOB="1500000065ffff048000000800395032303030"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_NOTIFY_RETRIEVE(r2, &(0x7f00000000c0)={0x14c}, 0x137) mount$9p_fd(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040), 0x0, &(0x7f00000003c0)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2, @ANYBLOB=',cache=mmap']) chmod(&(0x7f0000000140)='./file0\x00', 0x0) r3 = creat(&(0x7f0000000300)='./file0\x00', 0x0) open$dir(&(0x7f0000000080)='./file0\x00', 0x2000, 0x4) pwritev2(r3, &(0x7f0000000200)=[{&(0x7f0000000340)="01", 0x1}], 0x1, 0x8, 0x6, 0x0) write$FUSE_POLL(r3, &(0x7f0000000380)={0x18, 0xfffffffffffffff5, 0x0, {0x1}}, 0x18) [ 75.075961][ T5334] Bluetooth: hci0: command tx timeout [ 75.205567][ T5355] 9pnet: bogus RWRITE count (2 > 1) [ 75.211345][ T5355] page: refcount:2 mapcount:0 mapping:ffff8880524f8220 index:0x0 pfn:0x4c902 [ 75.217853][ T5355] memcg:ffff888030ad8d00 [ 75.219653][ T5355] aops:v9fs_addr_operations ino:2 dentry name(?):"/" [ 75.222611][ T5355] flags: 0x4fff20000000020(lru|node=1|zone=1|lastcpupid=0x7ff) [ 75.227079][ T5355] raw: 04fff20000000020 ffff888030ae89e0 ffff888030ae89e0 ffff8880524f8220 [ 75.230616][ T5355] raw: 0000000000000000 0000000000000000 00000002ffffffff ffff888030ad8d00 [ 75.235418][ T5355] page dumped because: VM_BUG_ON_FOLIO(!folio_test_locked(folio)) [ 75.238631][ T5355] page_owner tracks the page as allocated [ 75.241193][ T5355] page last allocated via order 0, migratetype Movable, gfp_mask 0x141cca(GFP_HIGHUSER_MOVABLE|__GFP_WRITE|__GFP_COMP), pid 5355, tgid 5354 (syz.0.0), ts 75199769916, free_ts 75189024164 [ 75.250410][ T5355] post_alloc_hook+0x240/0x2a0 [ 75.252600][ T5355] get_page_from_freelist+0x21e4/0x22c0 [ 75.255488][ T5355] __alloc_frozen_pages_noprof+0x181/0x370 [ 75.257918][ T5355] alloc_pages_mpol+0x232/0x4a0 [ 75.260620][ T5355] alloc_pages_noprof+0xa9/0x190 [ 75.262690][ T5355] folio_alloc_noprof+0x1e/0x30 [ 75.265255][ T5355] filemap_alloc_folio_noprof+0xdf/0x470 [ 75.267797][ T5355] __filemap_get_folio+0x3f2/0xaf0 [ 75.270125][ T5355] netfs_perform_write+0x43d/0x1ae0 [ 75.272377][ T5355] netfs_file_write_iter+0x17d/0x4a0 [ 75.276356][ T5355] do_iter_readv_writev+0x619/0x8b0 [ 75.278634][ T5355] vfs_writev+0x31a/0x960 [ 75.280593][ T5355] __se_sys_pwritev2+0x179/0x290 [ 75.282841][ T5355] do_syscall_64+0xfa/0x3b0 [ 75.285561][ T5355] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.288135][ T5355] page last free pid 5358 tgid 5358 stack trace: [ 75.290605][ T5355] free_unref_folios+0xdbd/0x1520 [ 75.292686][ T5355] folios_put_refs+0x559/0x640 [ 75.295828][ T5355] free_pages_and_swap_cache+0x4be/0x520 [ 75.298502][ T5355] tlb_flush_mmu+0x3a0/0x680 [ 75.300612][ T5355] tlb_finish_mmu+0xc3/0x1d0 [ 75.302640][ T5355] exit_mmap+0x44c/0xb50 [ 75.305372][ T5355] __mmput+0x118/0x430 [ 75.307671][ T5355] exit_mm+0x1da/0x2c0 [ 75.309601][ T5355] do_exit+0x648/0x2300 [ 75.311531][ T5355] do_group_exit+0x21c/0x2d0 [ 75.313493][ T5355] __x64_sys_exit_group+0x3f/0x40 [ 75.316743][ T5355] x64_sys_call+0x21f7/0x2200 [ 75.318749][ T5355] do_syscall_64+0xfa/0x3b0 [ 75.320705][ T5355] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.324886][ T5355] ------------[ cut here ]------------ [ 75.327359][ T5355] kernel BUG at mm/filemap.c:1498! [ 75.329711][ T5355] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI [ 75.332479][ T5355] CPU: 0 UID: 0 PID: 5355 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 75.336270][ T5355] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 75.340662][ T5355] RIP: 0010:folio_unlock+0x13d/0x160 [ 75.342964][ T5355] Code: aa c7 ff 48 89 df 48 c7 c6 00 50 b4 8b e8 5b d9 2f ff 90 0f 0b e8 13 aa c7 ff 48 89 df 48 c7 c6 20 46 b4 8b e8 44 d9 2f ff 90 <0f> 0b e8 fc a9 c7 ff 48 89 df 48 c7 c6 00 50 b4 8b e8 2d d9 2f ff [ 75.349985][ T5355] RSP: 0018:ffffc9000d53f888 EFLAGS: 00010246 [ 75.352326][ T5355] RAX: 96845b7a5695ed00 RBX: ffffea0001324080 RCX: 0000000000000000 [ 75.355465][ T5355] RDX: 0000000000000007 RSI: ffffffff8dbbcf9b RDI: 00000000ffffffff [ 75.358538][ T5355] RBP: ffffc9000d53fc48 R08: ffffffff8fc3c737 R09: 1ffffffff1f878e6 [ 75.361711][ T5355] R10: dffffc0000000000 R11: fffffbfff1f878e7 R12: 1ffffd4000264811 [ 75.364686][ T5355] R13: 04fff20000000020 R14: ffffea0001324088 R15: dffffc0000000000 [ 75.367947][ T5355] FS: 00007f7cd97986c0(0000) GS:ffff88808d00a000(0000) knlGS:0000000000000000 [ 75.371616][ T5355] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.374349][ T5355] CR2: 00007f7cd8ba8558 CR3: 0000000043894000 CR4: 0000000000352ef0 [ 75.377718][ T5355] Call Trace: [ 75.379200][ T5355] [ 75.380429][ T5355] netfs_perform_write+0x14fc/0x1ae0 [ 75.382577][ T5355] ? __lock_acquire+0xab9/0xd20 [ 75.384472][ T5355] ? __pfx_netfs_perform_write+0x10/0x10 [ 75.386578][ T5355] ? file_update_time+0x2da/0x490 [ 75.388678][ T5355] ? netfs_buffered_write_iter_locked+0x126/0x2a0 [ 75.391448][ T5355] ? netfs_file_write_iter+0x167/0x4a0 [ 75.393627][ T5355] netfs_file_write_iter+0x17d/0x4a0 [ 75.395735][ T5355] vfs_write+0x5c9/0xb30 [ 75.397468][ T5355] ? __pfx_v9fs_file_write_iter+0x10/0x10 [ 75.403188][ T5355] ? __pfx_vfs_write+0x10/0x10 [ 75.405061][ T5355] ? __fget_files+0x2a/0x420 [ 75.407103][ T5355] ksys_write+0x145/0x250 [ 75.409189][ T5355] ? __pfx_ksys_write+0x10/0x10 [ 75.411203][ T5355] ? rcu_is_watching+0x15/0xb0 [ 75.412875][ T5355] ? do_syscall_64+0xbe/0x3b0 [ 75.414757][ T5355] do_syscall_64+0xfa/0x3b0 [ 75.416408][ T5355] ? lockdep_hardirqs_on+0x9c/0x150 [ 75.418410][ T5355] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.420724][ T5355] ? clear_bhb_loop+0x60/0xb0 [ 75.422428][ T5355] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.424896][ T5355] RIP: 0033:0x7f7cd898eba9 [ 75.426861][ T5355] 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 [ 75.434506][ T5355] RSP: 002b:00007f7cd9798038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 75.437339][ T5355] RAX: ffffffffffffffda RBX: 00007f7cd8bd5fa0 RCX: 00007f7cd898eba9 [ 75.440320][ T5355] RDX: 0000000000000018 RSI: 0000200000000380 RDI: 0000000000000007 [ 75.443371][ T5355] RBP: 00007f7cd8a11e19 R08: 0000000000000000 R09: 0000000000000000 [ 75.446728][ T5355] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.450196][ T5355] R13: 00007f7cd8bd6038 R14: 00007f7cd8bd5fa0 R15: 00007ffe825bb348 [ 75.453520][ T5355] [ 75.454919][ T5355] Modules linked in: [ 75.457417][ T5355] ---[ end trace 0000000000000000 ]--- [ 75.468314][ T5355] RIP: 0010:folio_unlock+0x13d/0x160 [ 75.470917][ T5355] Code: aa c7 ff 48 89 df 48 c7 c6 00 50 b4 8b e8 5b d9 2f ff 90 0f 0b e8 13 aa c7 ff 48 89 df 48 c7 c6 20 46 b4 8b e8 44 d9 2f ff 90 <0f> 0b e8 fc a9 c7 ff 48 89 df 48 c7 c6 00 50 b4 8b e8 2d d9 2f ff [ 75.480858][ T5355] RSP: 0018:ffffc9000d53f888 EFLAGS: 00010246 [ 75.483471][ T5355] RAX: 96845b7a5695ed00 RBX: ffffea0001324080 RCX: 0000000000000000 [ 75.487468][ T5355] RDX: 0000000000000007 RSI: ffffffff8dbbcf9b RDI: 00000000ffffffff [ 75.491650][ T5355] RBP: ffffc9000d53fc48 R08: ffffffff8fc3c737 R09: 1ffffffff1f878e6 [ 75.495456][ T5355] R10: dffffc0000000000 R11: fffffbfff1f878e7 R12: 1ffffd4000264811 [ 75.498803][ T5355] R13: 04fff20000000020 R14: ffffea0001324088 R15: dffffc0000000000 [ 75.502490][ T5355] FS: 00007f7cd97986c0(0000) GS:ffff88808d00a000(0000) knlGS:0000000000000000 [ 75.506831][ T5355] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.509824][ T5355] CR2: 00007f7cd8ba8558 CR3: 0000000043894000 CR4: 0000000000352ef0 [ 75.513214][ T5355] Kernel panic - not syncing: Fatal exception [ 75.516208][ T5355] Kernel Offset: disabled [ 75.518087][ T5355] Rebooting in 86400 seconds..