Kernel panic - not syncing: corrupted stack end detected inside scheduler CPU: 0 PID: 3265 Comm: syz-fuzzer Not tainted 5.12.0-rc3-syzkaller #0 Hardware name: ARM-Versatile Express Backtrace: [<81802550>] (dump_backtrace) from [<818027c4>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:252) r7:00000080 r6:60000093 r5:00000000 r4:82b58344 [<818027ac>] (show_stack) from [<81809e98>] (__dump_stack lib/dump_stack.c:79 [inline]) [<818027ac>] (show_stack) from [<81809e98>] (dump_stack+0xb8/0xe8 lib/dump_stack.c:120) [<81809de0>] (dump_stack) from [<81803358>] (panic+0x130/0x378 kernel/panic.c:231) r7:81f4bca4 r6:82a390a4 r5:00000000 r4:82c6b0d0 [<81803228>] (panic) from [<818200c0>] (schedule_debug kernel/sched/core.c:4822 [inline]) [<81803228>] (panic) from [<818200c0>] (__schedule+0xcb8/0xcc8 kernel/sched/core.c:4967) r3:57ac6e9d r2:864e222c r1:81f5a420 r0:81f4bca4 r7:00000001 [<8181f408>] (__schedule) from [<818203c4>] (preempt_schedule_notrace+0x60/0xcc kernel/sched/core.c:5312) r10:80612b6c r9:82a22498 r8:00000001 r7:802b9198 r6:00000001 r5:802b9198 r4:864e2000 [<81820364>] (preempt_schedule_notrace) from [<802b9198>] (rcu_read_unlock_sched_notrace include/linux/rcupdate.h:794 [inline]) [<81820364>] (preempt_schedule_notrace) from [<802b9198>] (trace_lock_acquire+0x1dc/0x278 include/trace/events/lock.h:13) r7:00000000 r6:00000000 r5:8602c11c r4:82bfd3d6 [<802b8fbc>] (trace_lock_acquire) from [<802bfef8>] (lock_acquire+0x3c/0x74 kernel/locking/lockdep.c:5481) r10:80612b6c r9:00000000 r8:00000001 r7:00000001 r6:00000000 r5:00000000 r4:8602c11c [<802bfebc>] (lock_acquire) from [<81825008>] (down_read+0x48/0x5c kernel/locking/rwsem.c:1353) r10:8602c0e0 r9:8602c180 r8:00000000 r7:00000000 r6:8602c180 r5:80612b6c r4:8602c0e0 [<81824fc0>] (down_read) from [<80612b6c>] (ext4_map_blocks+0xe4/0x618 fs/ext4/inode.c:561) r5:000000d6 r4:864e3470 [<80612a88>] (ext4_map_blocks) from [<8063f410>] (ext4_mpage_readpages+0x630/0xbd8 fs/ext4/readpage.c:304) r10:00000000 r9:8602c180 r8:00000000 r7:00000001 r6:00000000 r5:000000d6 r4:00000000 [<8063ede0>] (ext4_mpage_readpages) from [<8060ea74>] (ext4_readahead+0x3c/0x40 fs/ext4/inode.c:3262) r10:8602c2fc r9:8602c2f8 r8:81a203f4 r7:00000000 r6:864e356c r5:864e3688 r4:8060ea38 [<8060ea38>] (ext4_readahead) from [<8042ec90>] (read_pages+0x8c/0x1f0 mm/readahead.c:130) [<8042ec04>] (read_pages) from [<8042ef48>] (page_cache_ra_unbounded+0x154/0x294 mm/readahead.c:238) r9:8602c2f8 r8:864e356c r7:00000020 r6:000000dc r5:864e3688 r4:df403120 [<8042edf4>] (page_cache_ra_unbounded) from [<8042f184>] (do_page_cache_ra+0xfc/0x150 mm/readahead.c:267) r10:8602c224 r9:00000001 r8:00000020 r7:80000013 r6:8042f3e4 r5:864e3688 r4:8602c180 [<8042f088>] (do_page_cache_ra) from [<8042f3e4>] (ondemand_readahead+0x20c/0x47c mm/readahead.c:549) r10:00000001 r9:000000bc r8:00000020 r7:0000009c r6:864e3688 r5:00000000 r4:85ab7360 [<8042f1d8>] (ondemand_readahead) from [<8042f718>] (page_cache_async_ra mm/readahead.c:607 [inline]) [<8042f1d8>] (ondemand_readahead) from [<8042f718>] (page_cache_async_ra+0xc4/0x110 mm/readahead.c:581) r10:864e3818 r9:df402550 r8:8602c2f8 r7:864e3714 r6:00000000 r5:864e3688 r4:85ab7360 [<8042f654>] (page_cache_async_ra) from [<80420adc>] (page_cache_async_readahead include/linux/pagemap.h:863 [inline]) [<8042f654>] (page_cache_async_ra) from [<80420adc>] (filemap_readahead mm/filemap.c:2350 [inline]) [<8042f654>] (page_cache_async_ra) from [<80420adc>] (filemap_get_pages+0x254/0x648 mm/filemap.c:2391) r7:864e3714 r6:0000009b r5:864e3830 r4:0000009c [<80420888>] (filemap_get_pages) from [<80420f98>] (filemap_read+0xc8/0x4e0 mm/filemap.c:2458) r10:864e3818 r9:8602c180 r8:805ff25c r7:864e3830 r6:00000000 r5:864e3818 r4:864e3830 [<80420ed0>] (filemap_read) from [<80421548>] (generic_file_read_iter+0x198/0x234 mm/filemap.c:2609) r10:00001000 r9:00000000 r8:805ff25c r7:00001000 r6:00000000 r5:864e3818 r4:864e3830 [<804213b0>] (generic_file_read_iter) from [<805ff25c>] (ext4_file_read_iter fs/ext4/file.c:130 [inline]) [<804213b0>] (generic_file_read_iter) from [<805ff25c>] (ext4_file_read_iter+0x54/0x118 fs/ext4/file.c:113) r10:00001000 r9:00000000 r8:00001000 r7:864e3888 r6:8602c180 r5:864e3830 r4:864e3818 [<805ff208>] (ext4_file_read_iter) from [<804da2bc>] (__kernel_read+0x130/0x314 fs/read_write.c:454) r7:864e3888 r6:00000000 r5:00000000 r4:85ab7280 [<804da18c>] (__kernel_read) from [<8073759c>] (integrity_kernel_read+0x20/0x28 security/integrity/iint.c:191) r9:00000000 r8:00400000 r7:865dc000 r6:00000000 r5:85ab7280 r4:0009b000 [<8073757c>] (integrity_kernel_read) from [<8073a754>] (ima_calc_file_hash_tfm+0x178/0x228 security/integrity/ima/ima_crypto.c:484) [<8073a5dc>] (ima_calc_file_hash_tfm) from [<8073ac7c>] (ima_calc_file_shash security/integrity/ima/ima_crypto.c:515 [inline]) [<8073a5dc>] (ima_calc_file_hash_tfm) from [<8073ac7c>] (ima_calc_file_hash+0x124/0x8b8 security/integrity/ima/ima_crypto.c:572) r10:8602c224 r9:00000000 r8:00000001 r7:00000013 r6:832fab90 r5:85703780 r4:85ab7280 [<8073ab58>] (ima_calc_file_hash) from [<8073bff8>] (ima_collect_measurement+0x224/0x260 security/integrity/ima/ima_api.c:252) r10:86013284 r9:8602c23c r8:86764198 r7:00000003 r6:00000000 r5:86764198 r4:85ab7280 [<8073bdd4>] (ima_collect_measurement) from [<807392a8>] (process_measurement+0x46c/0x7b0 security/integrity/ima/ima_main.c:330) r10:00000000 r9:8602c23c r8:86764198 r7:00000001 r6:00000001 r5:00000000 r4:85ab7280 [<80738e3c>] (process_measurement) from [<80739664>] (ima_file_check+0x78/0xa0 security/integrity/ima/ima_main.c:499) r10:00000000 r9:00000000 r8:85ab7280 r7:00000000 r6:00000000 r5:864e3d48 r4:00000006 [<807395ec>] (ima_file_check) from [<804ec638>] (do_open fs/namei.c:3367 [inline]) [<807395ec>] (ima_file_check) from [<804ec638>] (path_openat+0x20c/0x10f8 fs/namei.c:3498) r7:864e3e58 r6:82a3c39c r5:864e3f20 r4:00020002 [<804ec42c>] (path_openat) from [<804ef4ac>] (do_filp_open+0x7c/0x12c fs/namei.c:3525) r10:00000142 r9:864e2000 r8:80200224 r7:00000001 r6:864e3f20 r5:864e3e58 r4:864e3f58 [<804ef430>] (do_filp_open) from [<804d782c>] (do_sys_openat2+0xa8/0x160 fs/open.c:1187) r7:ffffff9c r6:00000009 r5:83588000 r4:864e3f58 [<804d7784>] (do_sys_openat2) from [<804d7cd0>] (do_sys_open fs/open.c:1203 [inline]) [<804d7784>] (do_sys_openat2) from [<804d7cd0>] (__do_sys_openat fs/open.c:1219 [inline]) [<804d7784>] (do_sys_openat2) from [<804d7cd0>] (sys_openat+0xa4/0xcc fs/open.c:1214) r7:00000142 r6:00000000 r5:057622a0 r4:ffffff9c [<804d7c2c>] (sys_openat) from [<80200060>] (ret_fast_syscall+0x0/0x2c arch/arm/mm/proc-v7.S:64) Exception stack(0x864e3fa8 to 0x864e3ff0) 3fa0: 00000000 00000000 ffffff9c 057622a0 000a0002 000001a4 3fc0: 00000000 00000000 00000000 00000142 00000005 54d737fb 024000e0 00a1f768 3fe0: 057622a3 02665b5c 00012368 000b7738 r5:00000000 r4:00000000 Rebooting in 86400 seconds..