Extracting prog: 6m22.52293696s Minimizing prog: 36m26.067784123s Simplifying prog options: 0s Extracting C: 2m3.867465174s Simplifying C: 18m1.066637223s 1 programs, 3 VMs, timeouts [15s 6m0s] extracting reproducer from 1 programs single: executing 1 programs separately with timeout 15s testing program (duration=15s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE detailed listing: executing program 0: syz_mount_image$hfsplus(&(0x7f0000000600), &(0x7f0000000180)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x201409c, &(0x7f0000000280)=ANY=[], 0x1, 0x644, &(0x7f0000000cc0)="$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") r0 = syz_open_dev$loop(&(0x7f00000001c0), 0x0, 0x0) ioctl$LOOP_SET_BLOCK_SIZE(r0, 0x4c09, 0x800) program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE detailed listing: executing program 0: syz_mount_image$hfsplus(&(0x7f0000000600), &(0x7f0000000180)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x201409c, &(0x7f0000000280)=ANY=[], 0x1, 0x644, &(0x7f0000000cc0)="$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") r0 = syz_open_dev$loop(&(0x7f00000001c0), 0x0, 0x0) ioctl$LOOP_SET_BLOCK_SIZE(r0, 0x4c09, 0x800) program crashed: KMSAN: kernel-infoleak-after-free in filemap_read single: successfully extracted reproducer found reproducer with 3 syscalls minimizing guilty program testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop detailed listing: executing program 0: syz_mount_image$hfsplus(&(0x7f0000000600), &(0x7f0000000180)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x201409c, &(0x7f0000000280)=ANY=[], 0x1, 0x644, &(0x7f0000000cc0)="$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") syz_open_dev$loop(&(0x7f00000001c0), 0x0, 0x0) program did not crash testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-ioctl$LOOP_SET_BLOCK_SIZE detailed listing: executing program 0: syz_mount_image$hfsplus(&(0x7f0000000600), &(0x7f0000000180)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x201409c, &(0x7f0000000280)=ANY=[], 0x1, 0x644, &(0x7f0000000cc0)="$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") ioctl$LOOP_SET_BLOCK_SIZE(0xffffffffffffffff, 0x4c09, 0x800) program did not crash testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE detailed listing: executing program 0: r0 = syz_open_dev$loop(&(0x7f00000001c0), 0x0, 0x0) ioctl$LOOP_SET_BLOCK_SIZE(r0, 0x4c09, 0x800) program did not crash testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE detailed listing: executing program 0: syz_mount_image$hfsplus(&(0x7f0000000600), &(0x7f0000000180)='./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\x00', 0x201409c, &(0x7f0000000280)=ANY=[], 0x1, 0x644, &(0x7f0000000cc0)="$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") r0 = syz_open_dev$loop(0x0, 0x0, 0x0) ioctl$LOOP_SET_BLOCK_SIZE(r0, 0x4c09, 0x800) program did not crash extracting C reproducer testing compiled C program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE program crashed: general protection fault in refill_obj_stock simplifying C reproducer testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE program crashed: BUG: unable to handle kernel NULL pointer dereference in hfsplus_sync_fs testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE program crashed: KMSAN: kernel-infoleak-after-free in filemap_read testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE program crashed: KMSAN: kernel-infoleak-after-free in filemap_read testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE program crashed: KMSAN: kernel-infoleak-after-free in filemap_read testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE program did not crash testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE program crashed: KMSAN: kernel-infoleak-after-free in filemap_read testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$hfsplus-syz_open_dev$loop-ioctl$LOOP_SET_BLOCK_SIZE program crashed: KMSAN: kernel-infoleak-after-free in filemap_read reproducing took 1h2m53.524889826s repro crashed as (corrupted=false): ===================================================== BUG: KMSAN: kernel-infoleak-after-free in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak-after-free in copy_to_user_iter lib/iov_iter.c:24 [inline] BUG: KMSAN: kernel-infoleak-after-free in iterate_ubuf include/linux/iov_iter.h:29 [inline] BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance2 include/linux/iov_iter.h:245 [inline] BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance include/linux/iov_iter.h:271 [inline] BUG: KMSAN: kernel-infoleak-after-free in _copy_to_iter+0x366/0x24b0 lib/iov_iter.c:185 instrument_copy_to_user include/linux/instrumented.h:114 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:29 [inline] iterate_and_advance2 include/linux/iov_iter.h:245 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x366/0x24b0 lib/iov_iter.c:185 copy_page_to_iter+0x419/0x880 lib/iov_iter.c:362 copy_folio_to_iter include/linux/uio.h:180 [inline] filemap_read+0xc16/0x1500 mm/filemap.c:2652 blkdev_read_iter+0x6c0/0x8e0 block/fops.c:749 call_read_iter include/linux/fs.h:2114 [inline] new_sync_read fs/read_write.c:395 [inline] vfs_read+0xda3/0xef0 fs/read_write.c:476 ksys_read+0x20f/0x4c0 fs/read_write.c:619 __do_sys_read fs/read_write.c:629 [inline] __se_sys_read fs/read_write.c:627 [inline] __x64_sys_read+0x93/0xe0 fs/read_write.c:627 x64_sys_call+0x304d/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:1 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: memcpy_to_iter lib/iov_iter.c:65 [inline] iterate_bvec include/linux/iov_iter.h:122 [inline] iterate_and_advance2 include/linux/iov_iter.h:249 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0xe45/0x24b0 lib/iov_iter.c:185 copy_page_to_iter+0x419/0x880 lib/iov_iter.c:362 shmem_file_read_iter+0xa0a/0x12b0 mm/shmem.c:2866 do_iter_readv_writev+0x7e6/0x960 vfs_iter_read+0x279/0x700 fs/read_write.c:830 lo_read_simple drivers/block/loop.c:286 [inline] do_req_filebacked drivers/block/loop.c:496 [inline] loop_handle_cmd drivers/block/loop.c:1907 [inline] loop_process_work+0x2053/0x3440 drivers/block/loop.c:1942 loop_rootcg_workfn+0x2b/0x40 drivers/block/loop.c:1973 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3348 worker_thread+0xea5/0x1560 kernel/workqueue.c:3429 kthread+0x3e2/0x540 kernel/kthread.c:389 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was stored to memory at: memcpy_from_iter lib/iov_iter.c:73 [inline] iterate_bvec include/linux/iov_iter.h:122 [inline] iterate_and_advance2 include/linux/iov_iter.h:249 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] __copy_from_iter lib/iov_iter.c:249 [inline] copy_page_from_iter_atomic+0x12b7/0x2ae0 lib/iov_iter.c:481 generic_perform_write+0x4c1/0xc60 mm/filemap.c:3982 shmem_file_write_iter+0x2bd/0x2f0 mm/shmem.c:2920 do_iter_readv_writev+0x7e6/0x960 vfs_iter_write+0x459/0xd00 fs/read_write.c:895 lo_write_bvec drivers/block/loop.c:246 [inline] lo_write_simple drivers/block/loop.c:267 [inline] do_req_filebacked drivers/block/loop.c:491 [inline] loop_handle_cmd drivers/block/loop.c:1907 [inline] loop_process_work+0x1502/0x3440 drivers/block/loop.c:1942 loop_rootcg_workfn+0x2b/0x40 drivers/block/loop.c:1973 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3348 worker_thread+0xea5/0x1560 kernel/workqueue.c:3429 kthread+0x3e2/0x540 kernel/kthread.c:389 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was created at: slab_free_hook mm/slub.c:2083 [inline] slab_free mm/slub.c:4353 [inline] kfree+0x20f/0xa60 mm/slub.c:4463 tomoyo_check_open_permission+0xaa5/0xc50 security/tomoyo/file.c:786 tomoyo_file_open+0x271/0x360 security/tomoyo/tomoyo.c:334 security_file_open+0x9a/0x970 security/security.c:2961 do_dentry_open+0x4fd/0x2120 fs/open.c:942 vfs_open+0x7e/0xa0 fs/open.c:1089 do_open fs/namei.c:3650 [inline] path_openat+0x4a3c/0x5b00 fs/namei.c:3807 do_filp_open+0x20e/0x590 fs/namei.c:3834 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x2a1/0x310 fs/open.c:1432 x64_sys_call+0x3a64/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Bytes 0-255 of 1024 are uninitialized Memory access of size 1024 starts at ffff88811e5dc400 Data copied to user address 00005627ebb6d4a8 CPU: 0 PID: 5069 Comm: udevd Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 ===================================================== final repro crashed as (corrupted=false): ===================================================== BUG: KMSAN: kernel-infoleak-after-free in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak-after-free in copy_to_user_iter lib/iov_iter.c:24 [inline] BUG: KMSAN: kernel-infoleak-after-free in iterate_ubuf include/linux/iov_iter.h:29 [inline] BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance2 include/linux/iov_iter.h:245 [inline] BUG: KMSAN: kernel-infoleak-after-free in iterate_and_advance include/linux/iov_iter.h:271 [inline] BUG: KMSAN: kernel-infoleak-after-free in _copy_to_iter+0x366/0x24b0 lib/iov_iter.c:185 instrument_copy_to_user include/linux/instrumented.h:114 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:29 [inline] iterate_and_advance2 include/linux/iov_iter.h:245 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x366/0x24b0 lib/iov_iter.c:185 copy_page_to_iter+0x419/0x880 lib/iov_iter.c:362 copy_folio_to_iter include/linux/uio.h:180 [inline] filemap_read+0xc16/0x1500 mm/filemap.c:2652 blkdev_read_iter+0x6c0/0x8e0 block/fops.c:749 call_read_iter include/linux/fs.h:2114 [inline] new_sync_read fs/read_write.c:395 [inline] vfs_read+0xda3/0xef0 fs/read_write.c:476 ksys_read+0x20f/0x4c0 fs/read_write.c:619 __do_sys_read fs/read_write.c:629 [inline] __se_sys_read fs/read_write.c:627 [inline] __x64_sys_read+0x93/0xe0 fs/read_write.c:627 x64_sys_call+0x304d/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:1 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: memcpy_to_iter lib/iov_iter.c:65 [inline] iterate_bvec include/linux/iov_iter.h:122 [inline] iterate_and_advance2 include/linux/iov_iter.h:249 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0xe45/0x24b0 lib/iov_iter.c:185 copy_page_to_iter+0x419/0x880 lib/iov_iter.c:362 shmem_file_read_iter+0xa0a/0x12b0 mm/shmem.c:2866 do_iter_readv_writev+0x7e6/0x960 vfs_iter_read+0x279/0x700 fs/read_write.c:830 lo_read_simple drivers/block/loop.c:286 [inline] do_req_filebacked drivers/block/loop.c:496 [inline] loop_handle_cmd drivers/block/loop.c:1907 [inline] loop_process_work+0x2053/0x3440 drivers/block/loop.c:1942 loop_rootcg_workfn+0x2b/0x40 drivers/block/loop.c:1973 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3348 worker_thread+0xea5/0x1560 kernel/workqueue.c:3429 kthread+0x3e2/0x540 kernel/kthread.c:389 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was stored to memory at: memcpy_from_iter lib/iov_iter.c:73 [inline] iterate_bvec include/linux/iov_iter.h:122 [inline] iterate_and_advance2 include/linux/iov_iter.h:249 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] __copy_from_iter lib/iov_iter.c:249 [inline] copy_page_from_iter_atomic+0x12b7/0x2ae0 lib/iov_iter.c:481 generic_perform_write+0x4c1/0xc60 mm/filemap.c:3982 shmem_file_write_iter+0x2bd/0x2f0 mm/shmem.c:2920 do_iter_readv_writev+0x7e6/0x960 vfs_iter_write+0x459/0xd00 fs/read_write.c:895 lo_write_bvec drivers/block/loop.c:246 [inline] lo_write_simple drivers/block/loop.c:267 [inline] do_req_filebacked drivers/block/loop.c:491 [inline] loop_handle_cmd drivers/block/loop.c:1907 [inline] loop_process_work+0x1502/0x3440 drivers/block/loop.c:1942 loop_rootcg_workfn+0x2b/0x40 drivers/block/loop.c:1973 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3348 worker_thread+0xea5/0x1560 kernel/workqueue.c:3429 kthread+0x3e2/0x540 kernel/kthread.c:389 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Uninit was created at: slab_free_hook mm/slub.c:2083 [inline] slab_free mm/slub.c:4353 [inline] kfree+0x20f/0xa60 mm/slub.c:4463 tomoyo_check_open_permission+0xaa5/0xc50 security/tomoyo/file.c:786 tomoyo_file_open+0x271/0x360 security/tomoyo/tomoyo.c:334 security_file_open+0x9a/0x970 security/security.c:2961 do_dentry_open+0x4fd/0x2120 fs/open.c:942 vfs_open+0x7e/0xa0 fs/open.c:1089 do_open fs/namei.c:3650 [inline] path_openat+0x4a3c/0x5b00 fs/namei.c:3807 do_filp_open+0x20e/0x590 fs/namei.c:3834 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x2a1/0x310 fs/open.c:1432 x64_sys_call+0x3a64/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Bytes 0-255 of 1024 are uninitialized Memory access of size 1024 starts at ffff88811e5dc400 Data copied to user address 00005627ebb6d4a8 CPU: 0 PID: 5069 Comm: udevd Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 =====================================================