program: r0 = socket$nl_xfrm(0x10, 0x3, 0x6) r1 = dup(r0) syz_fuse_handle_req(0xffffffffffffffff, &(0x7f00000003c0)="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7b3912687b3b740fef68b9c7a1f2595f891ba22443ded8e04d5e411403c69f82506c332ddc7a50d04fe2362436fccee441b9f8e78ed32bcbcfde7183714729c1c3b0eb6f1e4d923fed92c385b0853f7f34bdeb4246634a3b2db6262cdfadc294c490740d74baa87552ed9d1fb6021f7d8eb1caa2a2983bb1b49588fa6c0472e26461d8be4a401c4ec9f7905201a1b0e7cb3367c84419fd5de4978c3ead7a62673fe0ca49a6cd202e1764f7ac1252e097ea293373f6c42793db84937f69dbfc80fe6bcd21ba4094ede2e8854e42a477ddef7378e59574abf4fd64ef3d53ff2b5de6fd9e142b39432bb0d7b376cf05a01bf5c94df5db897fc888fe1c8e9a9b57dcaa92359e6f537d8bf1d340af848164a6c0864be833c1c731ec7314abd5431cea57bd57c3ea57cd1d0a2a1cec6544c8b6d4efc3548dfa91de13089ae15a19bdf6d622f08ce9faac5daf828a1a7ecee81efc5959fbbce05532f602cfa7e604be35f7f558e8f920266355ca17fd740b2bbbe5958b348911b9589ca3e77b9450b2482caab4128ed2eadeac69b1736fbe5208fbaf6728d46a554287d9a7590f2fb1177f0fbc5a5d540489f58031c824969a30ba66dabb33f0362b2dfac6ef5b4d92d69da0f7b494a442325eeb4ce2e09bfd4df370155a1cf53e802f2d85a260fe3ada02470b9183507bdd2c84c49d9c9218e7d1401082dd14db526c21bade2ec81644dc23a2088188c652dcdfed963f650a7aee8cb2f974b49a341283f15280b473e58a9004ecf72b5215a6758a64a17e59fc9a39ead2c03ae8526bb906d51b5cffc0f7bf9aa5accf3e247da6e0fcaa8853db35bad899de5cd66f2cca16c35f1b6063581ec1d52730e0449bbfda619a3f544751aa299cb7c20073c196ee2bc4138d7c2828b357bee9e2093ac2d82e686344f402259232f5aaaebaad1ded32ba997025c9d70e7566769a32d54b6f67ee4eaef5d56a5202cda78f22402bad0175f", 0x2000, 0x0) open$dir(&(0x7f0000000080)='./file0\x00', 0x0, 0x0) perf_event_open(&(0x7f00000001c0)={0x8, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={&(0x7f0000000080)}, 0x0, 0x0, 0x0, 0x0, 0x7, 0x0, 0x5, 0x0, 0x0, 0x0, 0x7}, 0x0, 0x0, 0xffffffffffffffff, 0x0) syz_mount_image$ext4(&(0x7f0000000040)='ext4\x00', &(0x7f0000000000)='./file1\x00', 0x446, &(0x7f0000000080)={[{@stripe={'stripe', 0x3d, 0x2}}, {@journal_dev={'journal_dev', 0x3d, 0x1045}}, {@oldalloc}, {@noquota}, {@minixdf}, {@barrier_val={'barrier', 0x3d, 0x2}}, {@delalloc}, {@nojournal_checksum}, {@orlov}, {@user_xattr}, {@quota}, {@delalloc}]}, 0x1, 0x553, &(0x7f0000001080)="$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") r2 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0) pwrite64(r2, &(0x7f0000000140)='2', 0x1, 0x8000c61) r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x35) pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xfecc) setxattr$trusted_overlay_upper(&(0x7f0000000000)='./file1\x00', &(0x7f00000001c0), &(0x7f0000001040)=ANY=[], 0x841, 0x0) truncate(&(0x7f0000000180)='./file1\x00', 0x6) r4 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x42, 0x0) read$FUSE(r4, &(0x7f00000023c0)={0x2020}, 0x2020) r5 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00') mount$9p_fd(0x0, &(0x7f00000006c0)='./file1\x00', &(0x7f0000000100), 0x0, &(0x7f0000000200)={'trans=fd,', {'rfdno', 0x3d, r5}, 0x2c, {'wfdno', 0x3d, r5}}) read$FUSE(r3, &(0x7f0000004400)={0x2020, 0x0, 0x0}, 0x2020) write$FUSE_WRITE(r5, &(0x7f0000000240)={0x18, 0x0, r6, {0x2}}, 0x18) sendmsg$nl_xfrm(r1, &(0x7f0000000440)={0x0, 0x0, &(0x7f00000001c0)={&(0x7f0000000480)=@newpolicy={0xb8, 0x13, 0x1, 0x0, 0x0, {{@in=@multicast1, @in=@initdev={0xac, 0x1e, 0x0, 0x0}, 0x0, 0x0, 0x0, 0x0, 0xa, 0x60, 0x0, 0x0, 0x0, 0xee00}, {}, {0x0, 0x0, 0x0, 0xfffffffffffffffd}, 0x0, 0x0, 0x0, 0x1}}, 0xb8}}, 0x0) r7 = socket$nl_xfrm(0x10, 0x3, 0x6) sendmsg$IPCTNL_MSG_TIMEOUT_NEW(0xffffffffffffffff, &(0x7f0000000480)={0x0, 0x0, 0x0}, 0x0) sendmsg$nl_xfrm(r7, &(0x7f0000000440)={0x0, 0x0, &(0x7f00000001c0)={&(0x7f0000000480)=@newpolicy={0xb8, 0x13, 0x1, 0x0, 0x0, {{@in=@multicast2, @in6=@local={0xfe, 0x0}, 0x0, 0x0, 0x0, 0x0, 0xa, 0x30, 0x0, 0x0, 0x0, 0xee00}}}, 0xb8}}, 0x0) [ 84.567043][ T5298] Bluetooth: hci0: command tx timeout [ 84.733524][ T5318] loop0: detected capacity change from 0 to 1024 [ 84.747953][ T5318] ======================================================= [ 84.747953][ T5318] WARNING: The mand mount option has been deprecated and [ 84.747953][ T5318] and is ignored by this kernel. Remove the mand [ 84.747953][ T5318] option from the mount to silence this warning. [ 84.747953][ T5318] ======================================================= [ 84.785588][ T5318] EXT4-fs: Ignoring removed oldalloc option [ 84.816298][ T5318] EXT4-fs: Ignoring removed orlov option [ 84.847836][ T5318] EXT4-fs (loop0): stripe (2) is not aligned with cluster size (16), stripe is disabled [ 84.877382][ T5318] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. [ 84.927671][ T5318] ================================================================== [ 84.931962][ T5318] BUG: KASAN: use-after-free in ext4_ext_remove_space+0x3170/0x4280 [ 84.935913][ T5318] Read of size 4 at addr ffff888050e4f908 by task syz.0.0/5318 [ 84.939373][ T5318] [ 84.940555][ T5318] CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 84.940572][ T5318] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 84.940581][ T5318] Call Trace: [ 84.940590][ T5318] [ 84.940596][ T5318] dump_stack_lvl+0xe8/0x150 [ 84.940677][ T5318] print_report+0xba/0x230 [ 84.940700][ T5318] ? ext4_ext_remove_space+0x3170/0x4280 [ 84.940713][ T5318] kasan_report+0x117/0x150 [ 84.940752][ T5318] ? ext4_ext_remove_space+0x3170/0x4280 [ 84.940769][ T5318] ext4_ext_remove_space+0x3170/0x4280 [ 84.940786][ T5318] ? __es_remove_extent+0x13d3/0x1da0 [ 84.940811][ T5318] ? __pfx_ext4_ext_remove_space+0x10/0x10 [ 84.940826][ T5318] ? ext4_es_remove_extent+0x2a7/0x4c0 [ 84.940842][ T5318] ext4_ext_truncate+0x17e/0x2f0 [ 84.940858][ T5318] ext4_truncate+0xb63/0x13b0 [ 84.940875][ T5318] ? unmap_mapping_range+0xe6/0x180 [ 84.940892][ T5318] ? __pfx_ext4_truncate+0x10/0x10 [ 84.940911][ T5318] ext4_setattr+0x106e/0x1c60 [ 84.940925][ T5318] ? __pfx_ext4_setattr+0x10/0x10 [ 84.940938][ T5318] notify_change+0xc1a/0xf40 [ 84.940954][ T5318] do_truncate+0x1c2/0x250 [ 84.940968][ T5318] ? __pfx_do_truncate+0x10/0x10 [ 84.940976][ T5318] ? apparmor_path_truncate+0x245/0x2e0 [ 84.941142][ T5318] vfs_truncate+0x4b4/0x540 [ 84.941156][ T5318] ? __pfx_vfs_truncate+0x10/0x10 [ 84.941168][ T5318] ? do_getname+0x151/0x250 [ 84.941182][ T5318] do_sys_truncate+0xf3/0x1c0 [ 84.941193][ T5318] ? __pfx_do_sys_truncate+0x10/0x10 [ 84.941207][ T5318] __x64_sys_truncate+0x5b/0x70 [ 84.941218][ T5318] do_syscall_64+0x14d/0xf80 [ 84.941297][ T5318] ? trace_irq_disable+0x3b/0x150 [ 84.941338][ T5318] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.941373][ T5318] ? clear_bhb_loop+0x40/0x90 [ 84.941387][ T5318] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 84.941402][ T5318] RIP: 0033:0x7f94f299c799 [ 84.941424][ T5318] 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 [ 84.941435][ T5318] RSP: 002b:00007f94f3899fe8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 84.941451][ T5318] RAX: ffffffffffffffda RBX: 00007f94f2c15fa0 RCX: 00007f94f299c799 [ 84.941458][ T5318] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000200000000180 [ 84.941464][ T5318] RBP: 00007f94f2a32c99 R08: 0000000000000000 R09: 0000000000000000 [ 84.941470][ T5318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 84.941476][ T5318] R13: 00007f94f2c16038 R14: 00007f94f2c15fa0 R15: 00007ffeb98fcab8 [ 84.941485][ T5318] [ 84.941489][ T5318] [ 85.070380][ T5318] The buggy address belongs to the physical page: [ 85.074753][ T5318] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x50e4f [ 85.079789][ T5318] flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) [ 85.083626][ T5318] raw: 04fff00000000000 ffffea0001439408 ffffea0001439388 0000000000000000 [ 85.087686][ T5318] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 85.091612][ T5318] page dumped because: kasan: bad access detected [ 85.094538][ T5318] page_owner info is not present (never set?) [ 85.098520][ T5318] [ 85.099961][ T5318] Memory state around the buggy address: [ 85.102385][ T5318] ffff888050e4f800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 85.105890][ T5318] ffff888050e4f880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 85.109674][ T5318] >ffff888050e4f900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 85.113355][ T5318] ^ [ 85.115421][ T5318] ffff888050e4f980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 85.119848][ T5318] ffff888050e4fa00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 85.124737][ T5318] ================================================================== [ 85.176338][ T5318] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 85.179876][ T5318] CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 85.185035][ T5318] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 85.189522][ T5318] Call Trace: [ 85.191108][ T5318] [ 85.192473][ T5318] vpanic+0x56c/0xa60 [ 85.194385][ T5318] ? __pfx_vpanic+0x10/0x10 [ 85.196537][ T5318] panic+0xc5/0xd0 [ 85.198153][ T5318] ? __pfx_panic+0x10/0x10 [ 85.200669][ T5318] ? preempt_schedule_thunk+0x16/0x30 [ 85.203573][ T5318] ? ext4_ext_remove_space+0x3170/0x4280 [ 85.206679][ T5318] ? preempt_schedule_thunk+0x16/0x30 [ 85.209492][ T5318] ? ext4_ext_remove_space+0x3170/0x4280 [ 85.212420][ T5318] check_panic_on_warn+0x89/0xb0 [ 85.214611][ T5318] ? ext4_ext_remove_space+0x3170/0x4280 [ 85.216895][ T5318] end_report+0x73/0x180 [ 85.218887][ T5318] ? ext4_ext_remove_space+0x3170/0x4280 [ 85.221972][ T5318] kasan_report+0x128/0x150 [ 85.224436][ T5318] ? ext4_ext_remove_space+0x3170/0x4280 [ 85.227269][ T5318] ext4_ext_remove_space+0x3170/0x4280 [ 85.229765][ T5318] ? __es_remove_extent+0x13d3/0x1da0 [ 85.232208][ T5318] ? __pfx_ext4_ext_remove_space+0x10/0x10 [ 85.234662][ T5318] ? ext4_es_remove_extent+0x2a7/0x4c0 [ 85.237111][ T5318] ext4_ext_truncate+0x17e/0x2f0 [ 85.239281][ T5318] ext4_truncate+0xb63/0x13b0 [ 85.241413][ T5318] ? unmap_mapping_range+0xe6/0x180 [ 85.243872][ T5318] ? __pfx_ext4_truncate+0x10/0x10 [ 85.246153][ T5318] ext4_setattr+0x106e/0x1c60 [ 85.249239][ T5318] ? __pfx_ext4_setattr+0x10/0x10 [ 85.252358][ T5318] notify_change+0xc1a/0xf40 [ 85.254454][ T5318] do_truncate+0x1c2/0x250 [ 85.256549][ T5318] ? __pfx_do_truncate+0x10/0x10 [ 85.258806][ T5318] ? apparmor_path_truncate+0x245/0x2e0 [ 85.261384][ T5318] vfs_truncate+0x4b4/0x540 [ 85.263416][ T5318] ? __pfx_vfs_truncate+0x10/0x10 [ 85.265765][ T5318] ? do_getname+0x151/0x250 [ 85.268119][ T5318] do_sys_truncate+0xf3/0x1c0 [ 85.270682][ T5318] ? __pfx_do_sys_truncate+0x10/0x10 [ 85.273587][ T5318] __x64_sys_truncate+0x5b/0x70 [ 85.276053][ T5318] do_syscall_64+0x14d/0xf80 [ 85.278149][ T5318] ? trace_irq_disable+0x3b/0x150 [ 85.280471][ T5318] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.283230][ T5318] ? clear_bhb_loop+0x40/0x90 [ 85.285393][ T5318] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.288070][ T5318] RIP: 0033:0x7f94f299c799 [ 85.290733][ T5318] 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 [ 85.300048][ T5318] RSP: 002b:00007f94f3899fe8 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 85.304664][ T5318] RAX: ffffffffffffffda RBX: 00007f94f2c15fa0 RCX: 00007f94f299c799 [ 85.308528][ T5318] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000200000000180 [ 85.311897][ T5318] RBP: 00007f94f2a32c99 R08: 0000000000000000 R09: 0000000000000000 [ 85.315779][ T5318] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 85.319661][ T5318] R13: 00007f94f2c16038 R14: 00007f94f2c15fa0 R15: 00007ffeb98fcab8 [ 85.323719][ T5318] [ 85.325850][ T5318] Kernel Offset: disabled [ 85.327953][ T5318] Rebooting in 86400 seconds..